K&E Early Import
REF |
K&E Early Import
Made in France for K&E by Tavernier-Gravet
Front Scale:
20cm // A [ B, C ] D || 20cm
Back Scale: [ S, L, T ]
Back: Equivalents (conversion factors)
Note: Medaillis d'Or 1878 et 1889 - This means a gold medal for excellence
Archive: Herman van Herwijnen SRC |
K&E 1744 - Wm.Cox Patent 1891
REF |
K&E 1744 - Wm.Cox Patent
Note: This was the predecessor to model 4070
Patent US 460930, Issued Oct 6, 1891
Made in Germany for K&E by Dennert & Pape. 1900
Front Scale:
A [ B, C ] D
Back Scale:
A [ BI, CI ] D
Archive: Herman van Herwijnen SRC |
K&E 1744B - Wm.Cox Patent 1891
ISRM 27.07.04.52.X |
K&E 1744 - Wm.Cox Patent
Note: This was the predecessor to model 4070
Patent US 460930, Issued Oct 6, 1891
Made in Germany for K&E by Dennert & Pape. 1900
Front Scale:
A [ B, C ] D
Back Scale:
A [ BI, CI ] D
Tom Dilatush Collection. |
K&E 1744 1/2 - Wm.Cox Patent
REF |
K&E 1744 1/2 - Wm.Cox Patent
Predecessor to model 4060
Patent US 460930, Issued Oct 6, 1891
Made in Germany for K&E by Dennert & Pape. 1900
Front Scale:
A [ B, C ] D
Back Scale:
A [ BI, CI ] D
Archive: Herman van Herwijnen SRC |
REF K&E 1746 (D&P) |
K&E 1746 (D&P) RR track scales
Made in Germany by Dennert & Pape - circa 1888
Front Scale:
20cm // A [ B, C ] D \\ 26cm
Well: 26-51 cm
Back Scale:
Equivalents [ S, L, T]
Archive - Clay Castleberry Collection |
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K&E 4012/4013 Thacher's Calculating Instrument (Cylindrical)
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See Cylindrical Slide Rule gallery
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K&E 4031 Mannheim
REF |
K&E 4031 Mannheim c.1909
Made in U.S.A. - Pat June 5, 1900
Front Scale:
5inch // A [ B, C ] D || 13.5cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Scan donated by Paul Tarantolo, Houston, Texas.
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K&E 4031 5-inch (Finely Divided)
ISRM 24.07.04.45 |
K&E 4031 5-inch (Finely Divided) Lot105
Made in U.S.A. - Pat June 5, 1900
Front Scale:
5inch // A [ B, C ] D || 13.7cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gift of Debbie Dilitush of Paradise, Utah, Tom Dilatush Collection.
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K&E 4031 5-inch Mannheim 1924 Version 1
ISRM 22.09.13.35
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K&E 4031 5-inch Mannheim sn92226 1924 Version 1
Made in U.S.A. by Keuffel & Esser. All-Glass cursor(Indicator)
Front Scale:
5inch // A [ B, C ] D || 12cm
Back Scale:
[ S, L, T ]
Back: Early Equivalents label;
Gift Of JoAnn Lynn of Washington D.C., Husband Joel L. Lynn's Collection
 W.L.E.Keuffel Patent drawingJune 5, 1900 US 0651142 (PDF)
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K&E 4031 5-inch Mannheim 1924 Version 2
ISRM 22.05.06.23
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K&E 4031 5-inch Mannheim sn95153 1924 Version 1
Made in U.S.A. by Keuffel & Esser. All-Glass cursor(Indicator)
Front Scale:
5inch // A [ B, C ] D || 12cm
Back Scale:
[ S, L, T ]
Back: U.S. Bureau of Standards Circular No. 47 Equivalents label;
Gift Of Nancy (nee Allison) Ulrich of Denver, Colorado.. Husband Ted Ulrich's Collection
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K&E 4032
P109 |
K&E 4032
Made in U.S.A. - Pat June 5, 1900
Front Scale:
5inch // A [ B, C ] D \\ 13cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Original Owner: W.B. Ross (on case and SR)
Scan donated by Clay Castleberry, California
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K&E American
| K&E American
Made in U.S.A. Est. date prior to1900 - Boxwood
Front Scale:
10In // A [ B, C ] D || 25Cm
Back Scale:
[ S, L, T ]
Channel: 25 to 52Cm scale |
K&E 4035 8 inch Mannheim
ISRM 18.07.11.05 |
K&E 4035 Mannheim c.1913-1914 Lot 34
Made in U.S.A. - Pat June 5, 1900
Metal framed glass cursor
Front Scale:
8inch // A [ B, C ] D || 21.2cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gifted by Phil Stanley of Worcster, Massachussettes
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Philip Stanley retired from engineering to become a full-time dealer in and appraiser of antique scientific instruments and tools as The Analytical Engine. He has written two books on antique measuring instruments, and numerous articles on instruments and technology, and has given several talks on these subjects. Phil appeared on the Antiques Road Show on PBS, as an appraiser, in 2012, 2013, 2014.
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K&E 4035 Mannheim Lot 2
ISRM 14.07.02.25 |
K&E 4035 Mannheim Finely Lot 2
Made in U.S.A. - circa 1915
Note: Laminated well. with Patent reference: Pat.June 5, 1900
Frameless glass cursor
Front Scale:
8inch // A [ B, C ] D || 21.2cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gift of Ed Millis, Dallas, Texas.
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K&E 4035 Mannheim Lot 606
ISRM 22.03.01.78 |
K&E 4035 Mannheim Lot 606
Made in U.S.A. - circa 1915
Note: No Lamination in well. Patent reference: "Pat.June 5, 1900" on bottom face of stock. with "Keuffel & Esser Co. NY"
Frameless all-glass cursor
Front Scale:
8inch // A [ B, C ] D || 21.2cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gift of the Philip Stanley Collection.
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K&E 4035 Mannheim Finely Divided Lot 453
ISRM 13.05.05.01 |
K&E 4035 Mannheim Finely Divided Lot 453
Made in U.S.A. - circa 1915
Note: Patent reference on stock: Pat.June 5, 1900
Frameless glass cursor
Front Scale:
8inch // A [ B, C ] D || 21.2cm
Back Scale:
[ S, L, T ]
Back: Equivalents
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REF K&E N4035 Mannheim |
K&E N4035 Mannheim sn308600
Made in U.S.A. c.1931
Frameless glass cursor
Front Scale:
8inch // A [ B, C ] D || 20cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Scan donated by Paul Tarantolo, Houston, Texas.
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REF K&E N4035 Mannheim |
K&E N4035 Mannheim sn308715
Made in U.S.A. c.1931
Improved glass cursor
Front Scale:
8inch // A [ B, C ] D || 21.2cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Scan donated by Paul Tarantolo, Houston, Texas.
Note: The serial number on this K&E N4035 with the improved glass indicator (cursor)
predates the offering of that indicator. The improved glass indicator was introduced
around 1935-1936. This may have been replaced.
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REF K&E 4040 with Chisel Cursor |
K&E 4040 with with Chisel Cursor
Made in U.S.A. circa 1900
Front Scale:
10 Inch // A [ B, C ] D \\ 27 Cm
Back Scale:
Equivalents [ S, L, T ]
Well: 27-52cm
Scan donated by Clay Castleberry, California
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REF K&E 4041 with RR Track Scales |
K&E 4041 with RR Track Scales
Made in U.S.A. circa 1900
Front Scale:
10 Inch // A [ B, C ] D \\ 27 Cm
Back Scale:
Equivalents [ S, L, T ]
Scan donated by Clay Castleberry, California
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REF K&E 4041-3 with Decimal Keeper |
K&E 4041-3 with Decimal Keeper
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
Inch // A [ B, C ] D || Cm
Back Scale:
[ S, L, T ]
Scan donated by Clay Castleberry, California
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K&E 4041 Mannheim c1901
ISRM 15.07.20.02 |
K&E 4041 Mannheim Lot#211 c1901
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale (no scale labels)
10 Inch // A [ B, C ] D || 27 Cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gift Of Nick Krantz, Pasadena, California
Note: The Cursor shown, which is missing the glass lens, is actually for an early Faber-Castell model.
It was put on by the ISRM curator in 2015 to make the slide rule look complete.It has since been
removed from this specimen for historical accuracy we're still in the hunt for a replacement..
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K&E 4041 Mannheim All-Glass Cursor c1915
ISRM 14.07.20.24 |
K&E 4041 Mannheim All-Glass Cursor Lot#36X c1915
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale (no scale labels)
10 Inch // A [ B, C ] D || 27 Cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gift of Ed Millis, Dallas, Texas
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K&E N<4041> Mannheim All-Glass Cursor (1922)
ISRM 22.07.06.86 |
K&E <N4041> Mannheim All-Glass Cursor sn44106 1922
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Begin 5 digit serial numbers. N outside Brackets.
Front Scale (left scale labels)
10 Inch // A [ B, C ] D || 25 Cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Original owner: "S. Windelhurst", "143" & "222" scratched on back.
Gifted by Cindy Tate of Bozeman, Montana. Victor B. tate Collection.
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K&E <N4041> Mannheim All-Glass Cursor (1925)
ISRM 14.07.20.24 |
K&E <N4041> Mannheim All-Glass Cursor sn122676 1925
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Begin 6 digit serial numbers
Front Scale (no scale labels)
10 Inch // A [ B, C ] D || 27 Cm
Back Scale:
[ S, L, T ]
Back: Equivalents
Gifted by Philip E. Stanley of Worcester, Massachusetts
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K&E N4041 Mannheim c1941
ISRM 13.06.25.08 |
K&E N4041 Mannheim sn637284 c1941
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
10 Inch // A [ B, C ] D || 27 Cm
Back Scale:
[ S, L, T ]
Gifted by Norma Tanner of Libertyville, Illinois
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K&E Mystery Mannheim (4053-3 stock) c1937
ISRM 22.05.22.13 |
K&E Mystery Mannheim (4053-3 stock) sn552914 c1937,
Made in U.S.A. - Modern K&E logo on right.11 scales. Has 4097C "Ever-There" scale set.
Front Scale (scale labels on left)
10in // A, DF [ CF, CI, C ] D, K || 25cm
Back Scale: [ S, B, L, T ]
Gift Of Judy Johnson of Mayland. Father. Franklin G. Fink's Collection.
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K&E 4053-2 Polyphase 8in Aluminum Cursor
ISRM 22.03.01.09 |
K&E 4053-2 Polyphase 8 inch Lot314 Aluminum Framed Cursor 1906-1912,
Made in U.S.A. - Pat June 8, 1900
Front Scale (scale labels on right)
8in // A [ B, CI, C ] D || K
Back Scale: [ S, L, T ]
GiftOf Philip E. Stanley Collection
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K&E 4053-2 Polyphase 8in AGC cursor
ISRM 22.09.13.43
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K&E 4053-2 Polyphase 8 inch AGC Lot46 c1915
Made in U.S.A. - Pat June 8, 1900
Note: All-Glass Cursor with side hairline
Front Scale (scale labels on right)
8in // A [ B, CI, C ] D || K
Back Scale: [ S, L, T ]
Original Owner H.D. Gump (scratched on back). An H.D. Gump is listed in the 1940 census as born in 1867 and was 73 Y.O., Johnson County, Tennesssee
Gifted by JoAnn Lynn of Washington, D.C. Joel L. Lynn Collection.
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K&E N4053-2 Polyphase 1925
ISRM 21.09.23.01
Sleeve with C.H. Koch, District Manager and Colorado Central Power Co.
The Digger - Colorado School of Mines. Ads showing C.H. Koch, District manager and photos of signs showing Colorado Central Power Co., Courtesy of Golden History Museum.
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K&E N4053-2 Polyphase 8 inch s/n175450
Made in U.S.A. - All-Glass cursor - Finely-Divided Scales
Front Scale (scale labels on left):
8in // A [ B, CI, C ] D, K || 20cm
Back Scale:
[ S, L, T ]
Clarence H. Koch (1904-1989) was a Golden, Colorado native who worked for many years as an electrical engineer and utility executive. He was employed by the Colorado Central Power Company from 1924 to 1945. After resigning from the power company, he organized the Davison-Koch Furniture Store in Golden, which operated between 1945 and 1950. He was thr District 3 Commissioner (Republican) 1951 to 1959.
Koch also raised cattle on his ranch in Mount Vernon Canyon after 1941, and until 1965 when he moved with his family to a ranch at Livermore, north of Fort Collins. He lived there and in Fort Collins until his death.
Central Colorado Power Company (1906-1959) was founded in 1906 by Myron T. Herrick. A pioneer in hydroelectric power, Herrick had diverted the Colorado River in 1909, sending it through two and one-third miles of granite to turbines in his company's Shoshone plant. From there he sent transmission lines 150 miles through several forbidding mountain passes to Denver. He also built Barker Dam in Boulder Canyon, a project that took more than 18 months to complete and for which his company had to devise new methods of acetylene welding. It was renamed Colorado Power Company, then was merged with the Public Service Company of Colorado on September 3, 1924,Colorado Power Company and in 1923 served the coal mines of northern Colorado and the towns of Lafayette, Boulder, Longmont, Loveland, Berthoud, Fort Collins, Greeley, Fort Lupton, Brighton, and Cheyenne, Wyoming.
1926 Several regional power companies, including Jeffco Power & Light were consolidated to form Colorado Central Power Company. The new company covered Golden, Morrison, Englewood, Littleton, Fort Lupton, Plattevill, Johnstown, Milliken, Hudson, and Keenesburg. The new company's main offices were in Golden, on Washington Avenue. Sometime in the 1960's Colorado Central Power Company was absorb by the Public Service Company of Colorado. Ref: Golden History Moment
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K&E 4053 Polyphase
REF |
K&E 4053 Polyphase No Model No.
Made in U.S.A. - c.1909
Front Scale (scale labels on right)
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Scan donated by Paul Tarantolo, Houston, Texas.
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K&E 4053 Polyphase Lot#687 (1909)
ISRM 22.03.01.24 |
K&E 4053 Polyphase Lot#687 1909 (No -3 dash number)
Made in U.S.A. - Early Pat June 8, 1900, this 4053 design first appeared in 1909 catalog.
Front Scale (scale labels on right)
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Back: Early Table of Equivalents label.
Gift Of Philip E. Stanley, Worcvhester, Mass.
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K&E 4053-3 Polyphase (1913)
ISRM 10.03.01.04 |
K&E 4053-3 Polyphase Lot#741, 1913
Made in U.S.A. - with the metal framed cursor
Front Scale (scale labels on left)
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Original Owner: E.G. Dary '13
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
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K&E 4053-3 Mannheim Polyphase (1914)
ISRM 10.03.01.11
 Joseph L. Soper
 Cursor Back
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K&E 4053-3 Mannheim Polyphase, Lot #317, 1914
Made in U.S.A. (the only year with the metal cursor bars)
Front Scale (scale labels on left)
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
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According to Joseph L. Soper, who worked at the K&E Salibury plant, K&E made the 4053 from around 1909 to the end of production of slide rules in 1976. The 4053 went through dozens of changes during its lifetime. The rarest of the variants is this 1914 Model 4053-3. In 1913, the 4053-3 had a framed indicator window, which blocked the view of portions of the slide rule when making calculations. K&E fixed this problem by making the "Frameless" indicator. K&E went through the patent process to protect their investment into this innovation. In 1914, K&E produced the "Frameless indicator with metal indicator bars". The metal indicator is marked, "Pat. Appl'd For", as seen in the image. This was followed very shortly after with a "Frameless indicator with plastic indicator bars". The plastic bars were marked, "K&E CO. N.Y. Pat. 8.17.15".
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K&E 4053-3 Mannheim Polyphase (1915)
ISRM 15.06.03.01
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K&E 4053-3 Mannheim Polyphase Lot No 17 (1915)
Made in U.S.A. - 1916. Labels on right side of stock
Note: Frameless indicator with plastic indicator bars, marked, "K&E CO. N.Y. Pat. 8.17.15".
Note: K Scale on edge uses hairline on bottom of cursor.
Front Scale:
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Original Owner: Henry Stuart Morton
Donated by Ann Morton of Lakewood, Colorado, Daughter of Henry Stuart Morton
Henry Stuart Morton (1908-1964) used this slide rule when he was at Georgia Tech, graduated in Civil Engineering in 1929.
He worked for Southern Bell and Telegraph for 33 years.
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K&E 4053-3 Polyphase Lot No.847
ISRM 22.04.08.01
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K&E 4053-3 Polyphase Lot No.847
Made in U.S.A. All Glass Cursor (chipped) Cursor
Front Scale:
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Cursor Patent 8-17-15
Back: Table of Equivalents
Belonged to Milo Higgs Weston (1882-1964) Oakland, California.
Penelope Anne Martell of San Jose, CA,Grand Daughter of Milo Higgs Weston
Milo Higgs Weston, Born in 2 Oct 1882 and died in 19 Nov 1964 Oakland, California. Milo worked as a Mechanical Engineer for
the Southern Pacific Company, Penelope included some old photos from the 1920's with the bio, showing his wife Clara Isabella
Fuller Weston. The San Francisco_Public Library has a collection of color slide by Milo and his daughter Clara M. Weston Martell (b.1918 d.2001,
Penelope's Mother, Father:Gerald Martell) from 1939-1940.the Weston family lived on Ashby Avenue in Berkeley, Alameda, California.
Son William H Weston (b1921) other Daughter Charlotte E Weston (c1923). California are shown in one of the family photos.
https://oac.cdlib.org/findaid/ark:/13030/c8x06cn7/
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K&E 4053-3 Polyphase (pre-1922 with 1936 cursor)
ISRM 10.03.01.10 |
K&E 4053-3 Polyphase Lot #44 pre-1922
Made in U.S.A. Note: 1936 Improved Cursor
Front Scale:
10in // A [ B, CI, C ] D || K
Back Scale:
[ S, L, T ]
Cursor Patent 8-17-15
Back: Table of Equivalents
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
Note: The 1936 K&E Catalog offered their new Improved Cursor Designs that had a hairline
on the plastic block as a replacement for older slide rules with scales on the edge. These hairline blocks
were not needed or found on 1936-1955 N4053's with the K scale on the face below the D scale.
The K scale was moved to face in 1922. The edge became a 25cm linear scale and did not need the extended hairline.
 ;
 ;
1936 K&E Catalog pages 329, 330 & 331 showing Replacement Cursors
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K&E N<4053-3> Polyphase (1922)
ISRM 22.05.22.05
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K&E N<4053-3> Polyphase sn5291 with Lot45 stamp. 1922.
Made in U.S.A. by Keuffel & Esser Co., New York
Note: This 100-year-old slide rule has both a serial number on the slide and a lot number stamped into the ends of the wood.
It's a transitional model where the "K" scale was moved to the face and K&E was still playing with their numbering schemes.
Notice that the "N" is outside the brackets. Times Roman font is used for the scale labels.
Patent markings: Stock Pat.June 5, 1900, All Glass Cursor: Pat. 8-17-15
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Gifted by Judy F. Johnson of Maryland. Her father Franklin G. Fink's collection.
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K&E N<4053-3F> Finely Divided Polyphase (1922)
ISRM 22.07.06.02
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K&E N<4053-3F> Finely Divided Polyphase sn16364 w/Lot96 stamp. 1922.
Made in U.S.A. by Keuffel & Esser Co., New York
Note: This 100-year-old slide rule with finely divided scales (count the number of divisions at each end) has both a serial number on the slide and a lot number stamped into the ends of the wood.
It's a transitional model where the "K" scale was moved to the face and K&E was still playing with their numbering schemes.
Notice that the "N" is outside the brackets. Times Roman font is used for the scale labels.
Patent markings: Stock Pat.June 5, 1900, All Glass Cursor: Pat. 8-17-15
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Gifted by Cindy Tate of Bozeman, Montana.
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K&E N<4053-3F> Finely Divided Polyphase (1923) w/Magnifer
ISRM 24.07.04.30
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K&E N<4053-3F> Finely Divided Polyphase sn60883 1923 w/Magnifer.
Made in U.S.A. by Keuffel & Esser Co., New York
Note: This 100-year-old slide rule is finely divided scales (count the number of divisions at each end)
Notice that the "N" is outside the brackets. Times Roman font is used for the scale labels.
Patent markings: Stock Pat.June 5, 1900, All Glass Cursor: Pat. 8-17-15 with clip-on magifyer
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Gifted by Tom Dilatush Collection.
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K&E <N4053-3> Polyphase (1925)
ISRM 22.05.22.25
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K&E <N4053-3> Polyphase sn145841. 1925.
Made in U.S.A. by Keuffel & Esser Co., New York
Note:
This is another transitional model where the 6-digit serial number is introduced. "K" scale is on the face. Times Roman font is used for the scale labels.
Notice that the "N" is moved inside the brackets.
Patent markings: Stock Pat.June 5, 1900, (on upper left of stock). All Glass Cursor: Pat. 8-17-15
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Original owner (inside sleeve flap): "Louis C. Schoenherr, 12-25-26". Written with the precision of a draftsman. According to census data,
Louis lived from 1876-1954 and was buried in California. His parents were from Württemberg, Germany. Louis married Magdlene Maude Schoenherr (born Wagmann) .
They had one daughter: Rose Dorine Hoag (born Schanmer). His purchase date of the slide rule is one year after its manufacture.
Gifted by Philip E. Stanley collection, of Worcester, Massachusettes.
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K&E N4053-3 Polyphase (c1942)
ISRM 10.03.01.13
 John Prince
 Martha H. Prince
Martha continued John's interest in slide rules by being activily involved in the
Oughtred Society and being a supporter of ISRM.
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K&E N4053-3 Polyphase sn920438 c1942 but with pre-1936 AGC
Made in U.S.A. by Keuffel & Esser Co., New York
Note: the serial number dates the stock around 1942, but it has an All Glass Cursor with Plastic Blocks which was made from 1916-1933.
(appears to have a plastic replacement for the glass). It should have the improved metal framed cursor. Unfortunately, those had KERCS, so using an older design was a better idea.
Patents: Stock 1,934, 232; Cursor: Pat. 8-17-15
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Back: Table of Equivalents
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
John Prince III (1941-2005) John
graduated from Southern Methodist University Magna Cum Laude with a B.S.E.E., and he earned an
M.S.E.E. and Ph.D. from North Carolina State University. Worked at Texas Instruments,
then as a professor at Clemson University. In 1983
became a Professor of Electrical & Computer Engineering at University of Arizona.
John specialized in collecting K&E rules, with a strong interest in Pickett. In 2002, John
described how he started with slide rules back in 1960: "I used a K&E 4181-3. We were mandated
to use either a 4081-3 or 4181-3 in our freshman slide rule class.
I chose the cheaper (very important to a married 18 year old) rule and never
regretted it despite the dire predictions from some faculty about dimensional stability and
durability." Among John's awards were the 1988 Inventor Award by Semiconductor Research Corp.,
the 1988 Semiconductor International Technology Achievement Award and the 1991 Arizona Innovator
of the Year.
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K&E N4053-3 Polyphase (c1936 w/magnifier)
ISRM 21.07.09.01
|
K&E N4053-3 Polyphase sn178642 w/magnifier c1936
Made in U.S.A. by Keuffel & Esser Co., New York
Note: The serial number dates the stock around 1927.Model number on right of slide
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Patent 8-17-15, 1,934,232
Back: Table of Equivalents
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K&E N4053-3 Polyphase (c1927 with 1933 cursor)
ISRM 10.03.01.14 |
K&E N4053-3 Polyphase sn178042 c1933-1935
Made in U.S.A. by Keuffel & Esser Co., New York
Note: The serial number dates the stock around 1927. The Lens Protection on Cursor block was produced from 1933-1935, so this was a replacement to one broken or lost.
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Cursor Patent 8-17-15
Back: Table of Equivalents
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
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K&E N4053-3 Polyphase All Glass Cursor (c1927)
ISRM 14.07.02.38 |
K&E N4053-3 Polyphase All Glass Cursor sn61784
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Scale labels use Times Romans" font.
Front Scale
A [ B, CI ] D, K || 25cm
Back Scale
[ S, L, T ]
Back: Table of Equivalents
Original owner, initials in well: RJW
Gift of Ed Millis, Dallas, Texas
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K&E N4053-3 Polyphase c1930
ISRM 19.12.05.01
|
K&E N4053-3 Polyphase sn356497
Made in U.S.A. by Keuffel & Esser Co., New York
Patents: Stock: June 5, 1900. Cursor: 2.086,502.
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Gift Of A. Joseph Killian; Belonged to father Col. Joseph Oschenschlager Killian
Joseph Oschenschlager Killian (1912-?) Grew up on Apple & Cherry farm in Manson, Washington. He requested and received an appointment to west point and graduated in 1934, with an MS in civil engineering, and entered the U.S. Army Engineer Corps. Married Jeanellen O'Conner, daughter of General James A. O'Conner and had eight children. He serve during WWII in North Africa then led an engineering force building roads and bridges for allied troops .He built flood control projects in the Louisiana Basin. Joe was assigned to work with NATO in th e50s. Retired as a Full Colonel from Presido San Francisco, then supervised construction of the new Sonoma State Campus College in the 60s, remaining as Plant Manager until hi second retirement.
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K&E N4053-3 Polyphase with Magnifying Cusor
ISRM 11.12.14.01 |
K&E N4053-3 Polyphase with Magnifying Cusor - sn802716 c1941
Made in U.S.A. by Keuffel & Esser Co., New York - U.S.Military Issue
Patents: Stock: 1,934,232. Cursor: 2.086,502.
Front Scale:
10in (Broken Off) // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Sleeve Marked U.S. on flap.
|
K&E N4053-3 Polyphase c1941
ISRM 22.10.15.09
|
K&E N4053-3 Polyphase sn859655 c1941
Made in U.S.A. by Keuffel & Esser Co., New York
Note: The Model # was moved to the left end of slide and the modern K&E Logo added to the right end of the slide
Patents: Stock: 1,934,232 (inn center of upper stock between "Keufel & Esser" and "Made in USA". Cursor: 2.086,502.
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Original owner: Roland (Marked on sleeve)
Gifted by David Zoumaras of San Diego, California. Collection given to him by father-in-law.
David Zoumaras is the La Jolla City Director for Engineering and Capital Projects. His father-in-law gave him a small collection
of slide rules, but as a younger civil engineer, he was past the time when they were needed.
|
K&E N4053-3 Polyphase
ISRM 21.06.10.06 |
K&E N4053-3 Polyphase sn473568
Made in U.S.A. by Keuffel & Esser Co., New York
Note: The Model # was moved to the left end of slide and the modern K&E Logo added to the right end of the slide
Patents: Stock: 1,934,232. Cursor: 2.086,502.
Front Scale:
10in // A [ B, CI, C ] D, K || 25cm
Back Scale:
[ S, L, T ]
Original owner: Roland (Marked on sleeve)
Gifted by the Bob Dehn Collection
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K&E 4053-3 Polyphase (c1956)
ISRM 13.06.25.07 |
K&E 4053-3 Polyphase c1956 sn866766
Made in U.S.A.- Plastic and wood construction
Front Scale:
10in // A [ B, CI, C ] D, K \\ 25cm
Back Scale:
[ S, L, T ]
Back: Conversion Factors
Gifted by Norma Tanner of Libertyville, Illinois
|
K&E 4054 Favorite Mannheim (1901-1914)
ISRM 22.03.01.22 |
K&E 4054 Favorite Mannheim Lot#421 1901-1914
Made in U.S.A. - No laminate on edge rulers, Aluminum framed cursor. Boxwood stock.
Front Scale:
10in // A [ B, C ] D || 26cm
Back Scale:
[ S, L, T ]
Back: Early Conversion Factors
Gift Of Philip E. Stanley, Worcester, Mass.
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K&E 4054 10" Polyphase Mannheim c1947
ISRM 22.05.22.06
(Replaced 11.11.04.01 sn291745) |
K&E 4054 10" Polyphase Mannheim sn240279
Made in U.S.A. by Keuffel & Esser Co., New York
Note: New Improved Cursor - added CI and K scales. no linear scales on edges.
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
[ S, L, T ]
Gifted by Judy F. Johnson. Her father, Franklin G. Fink's Collection
|
K&E 4055 10" Favorite Mannheim 1928
ISRM 22.05.22.01
|
K&E 4055 10" Favorite Mannheim sn240483
Made in U.S.A. by Keuffel & Esser Co., New York
Note: All Glass cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Belonged to Franklin G. Fink (1938-2017)
Gifted by Judy F. Johnson,.daughter of Franklin G. Fink
Franklin G. Fink (1938-2017) Franklin G. Fink (1938-2017) was the son of two schoolteachers and had a propensity for taking things apart at an early age.
He went to High School at Brooklyn Technical High School in Brooklyn, NY, where he was president of
the Slide Rule Club. He attended college at The Polytechnic Institute of Brooklyn (now The NYU Tandon School
of Engineering), graduating with a Physics Degree. He worked as an Electrical Engineer for many years, then decided he wanted
to work for himself, and following his passion, began buying and selling technology treasures such as government surplus, antique
instruments, and random electronics to fellow enthusiasts. He would have used this 1928 slide rule in High School around 1953-1955.
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K&E 4055 10" Favorite Mannheim c1935
ISRM 22.05.22.04 |
K&E 4055 10" Favorite Mannheim sn437389
Made in U.S.A. by Keuffel & Esser Co., New York
Note: All Glass cursor with flanged cursor blocks
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Gift Of Judy F. Johnson,Franklin G. Fink collection.
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K&E 4055 10" Favorite Mannheim c1941
ISRM 18.04.06.32 |
K&E 4055 10" Favorite Mannheim sn833111
Made in U.S.A. by Keuffel & Esser Co., New York
Note: All Glass cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Gift of the Leroy Hausler Collection
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K&E 4055 10" Favorite Mannheim c1943
ISRM 14.01.10.16 |
K&E 4055 10" Favorite Mannheim sn948951
Made in U.S.A. by Keuffel & Esser Co., New York
Note: New Improved Cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Donated by Bill Wehrend Collection, Palo Alto, California.
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K&E 4056 Favorite Trademark Slide Rule
ISRM 17.05.22.09 |
K&E 4056 sn563371
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Gift of Pam Eaton of Dennis, Massachusettes.
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K&E 4056 Favorite Trademark Slide Rule
ISRM 14.07.02.41 |
K&E 4056 sn944322
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Gift Of Ed Millis Dallas, Texas
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K&E 4058 Beginner's Slide Rule (1915-1922)
ISRM 21.06.10.38 |
K&E 4058 Beginner's Slide Rule
Made in U.S.A. - Note: Thin film celluloid cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Original owner: Davies (written on back of stock)
Gift of Bob Dehn Collection.
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K&E 4058 Student's Slide Rule (c1924)
ISRM 13.06.25.12 |
K&E 4058 Student's Slide Rule
Made in U.S.A. - Note: Missing all wood framed cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Gift of Norma Tanner.
 S396 Reference for cursor
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K&E Beginner's Slide Rule (1924)
ISRM 22.07.06.07 |
K&E Beginner's Slide Rule 1924 (pre 4058)
Made in U.S.A. - Note: all wood framed cursor. no model number
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back : Equivalents. Note: slight differences in table - The Circular 47 notice is on bottom of table.
Gift of Cindy Tate, Bozeman, Montana.
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K&E (4058) Beginner's Slide Rule (1924)
REF S239 |
K&E (4058) Beginner's Slide Rule
Made in U.S.A. - Note: all wood framed cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back : Equivalents. Note: slight differences in table - The Circular 47 notice is on left of table.
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K&E 4058C Beginners Slide Rule Version 1 (1925-1941)
ISRM 14.07.02.37 |
K&E 4058C Beginners Slide Rule Version 1
Made in U.S.A. - Note: all wood framed cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back : Equivalents (variant printing of equivalents tables)
original owner written in well: Walter Sussman, CL21, Room407
Gift of Ed Millis, Dallas, Texas
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K&E 4058C Beginners Slide Rule Version 2 (1925-1941)
ISRM 14.07.02.40 |
K&E 4058C Beginners Slide Rule Version 2
Made in U.S.A. - Note: all-glass wood framed cursor
Note: Perfect condition, like new!
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back : Equivalents (variant printing of equivalents tables)
Gift of Ed Millis, Dallas, Texas
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K&E 4058W Beginner's Slide Rule (1930-1934)
ISRM 21.05.08.01 |
K&E 4058W Beginner's Slide Rule
Made in U.S.A. - Note: all-glass wood framed cursor. Painted stock
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back : Equivalents
Gift Of Jonah Berman of New York, NY
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K&E 4058W Beginner's Slide Rule (1936-1943)
ISRM 09.01.12.50 |
K&E 4058W Beginner's Slide Rule
Made in U.S.A. - Painted white before adding scales. Black Metal framed cursor
Front Scale:
A [ B, C ] D
Back Scale:
Equivalents [ S, L, T ]
Donated by David Hecht, Alexandria, Virginia
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K&E 4058W Beginner's Slide Rule (1936-1943)
ISRM 13.06.25.03
|
K&E 4058W Beginner's Slide Rule
Made in U.S.A. - Note difference in Cursor frame: Bright Metal framed cursor
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Previous owner: A loaner from a school's Textbook Department. This may very well be during WWII when
limited resources made it difficult for individuals to buy slide rule
Gifted by Norma Tanner of Libertyville, Illinois
Norma has been a participant of the ISRM Slide Rule Loaner Program. In addition, she had her own collection that she loaned out to students. This one is part of the collection sent to ISRM. Norma writes: "After teaching math and/or science for 24 years, I am now enjoying retired life.
Having been educated at MIchigan State University during a time when using a slide rule was the only technology available for advanced calculations, I decided to create a unit of study for my students that would introduce them to the slide rule. My goals were for students to strengthen their ability to estimate and use scientific notation, as well as to discover the historic significance of the slide rule. While it was hard for them to put aside their electronic calculators, they were fascinated, engaged, and thrilled when they could multiply 2 x 3 and actually get 6 instead of 5.9.
In the end my students were happy to be reunited with their calculators, but had a new appreciation for the value of estimating, scientific notation, and accuracy in measurement. Goals met! "
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K&E N4058W Beginner's Slide Rule Version 1 (1944-1953)
ISRM 22.07.06.10
|
K&E N4058W Beginner's Slide Rule Version 1
Made in U.S.A. - Note: Painted scales on boxwood, metal framed Cursor.
Front Scale: A [ B, CI, C ] D, K
Back Scale: Equivalents [ S, L, T ]
Gift Of Cindy Tate, Bozeman, Montana
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K&E N4058W Beginner's Slide Rule (1954-1959)
ISRM 12.05.02.03
See other slide rules from this talented family in the Circular, K&E, Pickett, Relay/Ricoh, and Post Galleries.
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K&E N4058W Beginner's Slide Rule
Made in U.S.A. - Note: One piece molded clear Plastic Cursor introduced 1954
Front Scale: A [ B, CI, C ] D, K
Back Scale: Equivalents [ S, L, T ]
Owned and donated by Ann Kilby, Kingston, Washington.
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K&E 8858 Beginners (WWII Wartime Loaner)
REF |
K&E 8858 Beginners (WWII Wartime Loaner)
Made in U.S.A. - 1942
Front Scale:
A [ B, C ] D
Back Scale:
[ S, L, T ]
Back: Model number and description of loan terms
Note: Issued for deposit of $1 as a loaner to meet war shortage
Scan donated by Paul Tarantolo, Houston, Texas.
|
K&E 4061-T Column Cursor - 5 inch
REF |
K&E 4061-T - patent Dec 22, 1908
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, T, CI ] D, L
Scan donated by Clay Castleberry, California |
K&E 4061-T All Glass Cursor 5 inch
REF |
K&E 4061-T - patents: June 5, 1900 and Dec 22, 1908
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, T, CI ] D, L
Scan donated by Clay Castleberry, California |
K&E 4061 Clamshell Cursor - 5 inch
REF |
K&E 4061 c.1909
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, CI ] D
Scan donated by Paul Tarantolo, Houston, Texas. |
K&E 4061-T (Trig) Clamshell Cursor - 5 inch
REF |
K&E 4061-T c.1909
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:>
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, T, CI ] D || L
Scan donated by Paul Tarantolo, Houston, Texas. |
K&E 4065-T Duplex Trig
REF |
K&E 4065-T Duplex Trig - 8 inch Scales
Made in U.S.A. by Keuffel & Esser Co., New York 1891 patent
Front Scale:
A [ B, S, C ] D
Back Scale:
A [ B, T, C ] D
Scan donated by Clay Castleberry, California |
K&E 4065 Clamshell Cursor
REF |
K&E 4065 c.1909 - 8 inch
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, CI ] D
Scan donated by Paul Tarantolo, Houston, Texas. |
K&E 4065 Frameless Glass
REF |
K&E 4065 c.1915 - 8 inch scales
Frameless glass cursor with metal guides
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale: Note Scales on this side are all red, before the change to only inverse scales being red
A [ BI, CI ] D
Scan donated by Paul Tarantolo, Houston, Texas.
|
K&E 4065-T Trig AGC (1916)
ISRM 24.07.04.54 |
K&E 4065-T Trig 8-inch AGC Lot#178 1916
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale:
A [ BI, T, CI ] D, L
Note all Scales on the back (Tangent) side are inked in red, before the change to only inverse scales being inked red
Gift Of the Tom Dilatush Collection
|
K&E 4065-T Trig AGC w/Magnifier (1916)
ISRM 22.03.01.04 |
K&E 4065-T Trig 8-inch AGC w/Magnifier Lot#8 1916
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale:
A [ BI, T, CI ] D, L
Note all Scales on the back (Tangent) side are inked in red, before the change to only inverse scales being inked red
Gift Of Philip E. Stanley, Worcester, Massachusetts
|
K&E 4070 Brass Chisel Cursor
ISRM 24.07.04.11.X |
K&E 4070 Brass Chisel Cursor
Made in Germany for K&E by Dennert & Pape. W. Cox patent Oct 6, 1891. Shown in 1901 catalog
Note: If this slide rule had Railroad Track scales it would be model 1744.
Front Scale:
A [ B, C ] D
Back Scale:
A [ BI, CI ] D
Tom Dilatush Collection
|
K&E 4070-3 Polyphase Duplex Trig 1941
ISRM 22.03.01.20 |
K&E 4070-3 Polyphase Duplex Trig 1941 sn829784
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Standard trig scales (6,12 divisions/degree)
Front Scale:
K, A [ B, T, ST, S ] D, DI
Back Scale:
DF [ CF, CIF, CI, C ] D, L
Belonged to Alfred W. Ravenings (name engraved on stock) of West Springfield, Mass. U.S. Patent 2,001,398 May 14, 1935 "Air Deflector and Water Circulator".
He founded the Alfred W. Ravenings Company, 190 Chestnut St. E. Longmeadow, Mass.
Gift Of Philip E. Stanley Collection of Worcester, Massachusetts
|
K&E 4070-3 Polyphase Duplex Trig 1949
ISRM 21.08.07.09 |
K&E 4070-3 Polyphase Duplex Trig sn407962 1949
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Fully laminated edges and has the new K&E logo, introduced in 1947 but no. © symbol.
Front Scale: Note: Standard trig scales (6,12 divisions/degree):
K, A [ B, T Cot, ST, S Cos] D, DI
Back Scale:
DF [ CF, CIF, CI, C ] D, L
original Owner(s): Inside flap: R.J. Kaplan
Gift of William Lisowski Collection.
|
K&E 4070-3 Polyphase Duplex Trig 1958
ISRM 18.04.06.42 |
K&E 4070-3 Polyphase Duplex Trig sn251113 1958
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Laminated edges with exposed mahagony. and the © symbol was above the K&E logo.
Front Scale: Note: Standard trig scales (6,12 divisions/degree):
K, A [ B, T Cot, ST, S Cos] D, DI
Back Scale:
DF [ CF, CIF, CI, C ] D, L
original Owner(s): Inside flap: P. Lanik. On Sleeve: B. Buziuk
Gift of Leroy Hausler Collection.
|
K&E 4071 Clamshell Cursor - 'U' Brackets
ISRM 24.07.04.50.X |
K&E 4071 c.1906
Clamshell style metal framed glass indicator with 'U' shaped brackets
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale: Note Scales on this side are all red, but has darkened to almost black.
A [ BI, CI ] D, L
Gift of Tom Dilatush Collection
|
K&E 4071 Duplex AGC (1915)
ISRM 22.03.01.18 |
K&E 4071 Duplex AGC Lot#62 1915
Frameless glass indicator
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, C ] D
Back Scale:
A [ BI, CI ] D, L
Note All the cales on the back side are inked in red.
Gift Of Philip E. Stanley. Worcester, Mass.
|
K&E 4071-T (Trig) Clamshell Cursor
REF |
K&E 4071 (Trig) c.1911
Clamshell style metal framed glass indicator, L scale on edge.
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red.:
A [ BI, T, CI ] D || L
Scan donated by Paul Tarantolo, Houston, Texas.
|
K&E 4071-T Column Cursor
REF |
K&E 4071-T c.1913
Column framed cursor, moved L scale on face
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red.
A [ BI, T, CI ] D, L
Scan donated by Paul Tarantolo, Houston, Texas. |
K&E 4071-T All Glass Cursor
REF |
K&E 4071-T c.1915
Frameless all-glass cursor, moved L scale on face
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, S, C ] D
Back Scale: Note Scales on this side are all red.
A [ BI, T, CI ] D, L
Scan donated by Paul Tarantolo, Houston, Texas. |
K&E 4071-T
ISRM 23.03.07.01 |
K&E 4071-T
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: Note: Decimal trig scales (5, 10 divisions/degree)
A [ BI, T,
CI ] D
Back Scale:
A [ B, S, C ] D
Edge Scale: L
|
K&E 4071-3 Polyphase Duplex DeciTrig (1938)
ISRM 14.07.02.45 |
K&E 4071-3 Polyphase Duplex DeciTrig 661715 1938
Made in U.S.A. by Keuffel & Esser Co., New York
Patent Markings: Pats. 1,930,852 Pat.Pend.
Front Scale: Note: Decimal trig scales (5, 10 divisions/degree)
K, A [ B, T Cot, ST, S Cos
] D, DI
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
Gift of Cindy Tate of Bozeman, Montana. Victor B. Tate Collection..
|
K&E 4071-3 Polyphase Duplex DeciTrig
ISRM 14.07.02.45 |
K&E 4071-3 Polyphase Duplex DeciTrig sn596150
Made in U.S.A. by Keuffel & Esser Co., New York
Patent Markings: Pats. 1,930,852 2,168,056 2,170,144 Pat.Pend.
Note: K&E Logo on both side of slide on right end.
Front Scale: Note: Decimal trig scales (5, 10 divisions/degree)
K, A [ B, T Cot, ST, S Cos
] D, DI
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
Gift of Ed Millis, Dallas, Texas.
|
K&E 4071-3 Polyphase Duplex DeciTrig
ISRM 18.04.06.30 |
K&E 4071-3 Polyphase Duplex DeciTrig sn 841357
Made in U.S.A. by Keuffel & Esser Co., New York
Patent Markings: Pats. 2,500,460 2,168,056 2,170,144 Pat. Pend.
Note: Inlaid mahagony edge, Decimal trig scales (5, 10 divisions/degree)
Front Scale;
K, A [ B, T Cot, ST, S Cos
] D, DI
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
Gift of Leroy Hausler Collection.
|
K&E 4076 Duplex Trig c1903 Column Curso (1913)
ISRM 15.09.27.05.X
This 1911 4071T shows the correct Indicator
|
K&E 4076 c1903 Column Curso (1913)
Model 4075 had the brass indicator (Chisel Cursor) and Model 4076 has a metal framed (clamshell) glass cursor.
Made in U.S.A. by Keuffel & Esser Co., New York
Patent Markings: Oct. 6, 1891
Front Scale: Note: Decimal trig scales (5, 10 divisions/degree):
A [ B, S, C ] D
Back Scale:
A [ CF, BI, T, CI ] D
Edge Scale: L
Note: The L scale is called the equal parts scale in the catalog
Gift of Robert Otnes, California. K&E GL Cursor gift from Philip Stanley, Massachusettes.
|
Technical Note: In order for ISRM to determine the manufacturing dates of the 4080 and 4081 slide rules, it is convienient to refer to the catalog pages provided on Clark McCoy's website. These are Clark's descriptions:
The 4081-3 family of slide rules are duplex type of slide rules. Of the catalogs available, the first release was shown in the 1937 catalog and price
list. From 1937 through 1947 the laminate covered the entire surface of the rules except for the ends and all printing was on the front and rear surfaces. From 1947 through 1952 the model numbers and other logo type information was engraved on the top edge of the rule. From 1952 through 1972 the top and bottom surfaces of the rules showed some wood with laminate inlayed in it.
This is the second series of slide rules called "Log Log Duplex Trig" (4080-3) and "Log Log Duplex
Decitrig" (4081-3). This group was evolved from the 4091-3 family in 1937
and the earlier 4092-3 family of slide rules. The 4081-3 family of slide rules
became the main stay for the K&E line of slide rules in the 1940s, 50s, and 60s,
On the right are the scale sets, modified to ISRM convention, where the Front is determined by the A scale. If there is a known date of the slide rules based on an owner's bio, that date is shown.
|
Note: The 4080-3 and 4081-3 are identical except for the scale graduations of the
trig scales. The 4080-3 is divided in degrees and minutes where as the 4081-3 is divided in degrees and decimal
degrees.
1937 (4080-3 & 4081-3) Scale sets:
Front: LL00, LL0, A [ B, T, ST, S ] D, DI, K
Back: L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
1939 (4080-3, 4080-5, 4081-3, & 4081-5) Scale sets:
Front: LL0, LL00, A [ B, T, ST, S ] D, DI, K
Back: L, LL1, DF, [ CF, CIF, CI, C ] D, LL3, LL2
1948 (N4080-3, N4080-5, N4081-3, N4081-5, &
N9081-3) Scale sets:
Front: LL01, K, A [ B, T, ST, S ] D, L, LL1
Back: LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
1949 Scale sets:
Front: LL01, L, K, A [ B, T, ST, S ] D, DI, LL1
Back: LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Note: No 1/e label on Right of LL02 and Left end of LL03
1953 (4181-1) Scale sets:
Front: LL01, L, K, A [ B, T, ST, S ] D, DI, LL1
Back: LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Note: All subsequent LL02, LL03 scales end with 1/e label on Right end of LL02 and Left end of LL03
1954 (4080-3, 4080-5, 4081-3, 4081-5, 4181-3, 68 1308, 68
1313, 68 1318, & 68 1323) Scale sets:
Front: LL01, L, K, A [ B, T, ST, S ] D DI, LL1
Back: LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
1955b (4081-3, 4081-5, 4181-1, 4181-1C, E4181J, 4181-3, 68
1200, 68 1205, 68 1210, 68 1215, 68 1220, 68 1251, 68 1256, 68 1261, 68 1282, & 68 1287) Scale sets:
Front: LL01 L K A [ B T SRT S ] D DI LL1
Back: LL02 LL03 DF [ CF CIF CI C ] D LL3 LL2
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K&E 4080-3 Log Log Duplex Trig (1936)
ISRM 22.03.01.26 |
K&E 4080-3 Log Log Duplex Trig sn551696
Made in U.S.A. - Notice BLACK LL00, LL0 scales, no K&E Logo
Note: 1937-1938 Scale set Nautical trig scales in 6,12 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; 2,168,144; Pat.Pend
Front Scale:
LL00, LL0, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: Norman H. Myers (name engraved on upper stock, and stenciled on sleeve). Provence would be appreciated from the Myers family.
Gift Of Philip E. Stanley Collection
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K&E 4080-3 Log Log Duplex Trig (1936)
ISRM 10.03.01.15 |
K&E 4080-3 Log Log Duplex Trig sn558863
Made in U.S.A. - Notice BLACK LL00, LL0 scales, no K&E Logo
Note: 1937-1938 Scale set. Nautical trig scales in 6,12 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; Pat.Pend Not: dropped one patent marking ( 2,168,144)
Front Scale: : :
LL00, LL0, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: Frank Morton (name sctatched on upper stock) Provence would be appreciated from the Morton family.
Gifted by Martha H. Prince in memory of the John Prince Collection, Tuscon, AZ
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K&E 4080-3 Log Log Duplex Trig (1939)
ISRM 23.07.14.01
Toshiyuki Fukushima September 20 1921 - January 1, 2016 Tosh was born and raised in the Japanese community in Seattle and started college at the University of Washington studying Mechanical Engineering. His education was interrupted by Executive Order 9066 and he was sent to the Minedoka Japanese Internment Camp for more than a year and a half. Continued on right
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K&E 4080-3 Log Log Duplex Trig sn712743 1939 (1956 cursor)
Made in U.S.A. - Notice transitiion to RED LL00, LL0 scales, no K&E Logo
Note: 1937-1938 Scale set. Nautical trig scales 6,12 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; 2,168,144; 2,170,144; Pat. Pend. Cursor Patent 2,086,502
Front Scale::
LL00, LL0, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: Toshiyuki Fukushima (sleeve flap) Swarthmore, PA.
Gift of Elizabeth Fukushima of Plainfield, Vermont,
Cont'd Gaining re-admittance to university was challenging for engineering students because Japanese American citizens were banned from any campus that had grants to conduct classified government research. He eventually was admitted to Swarthmore College, a small Quaker liberal arts college with an excellent Engineering Department, graduating in 1951. He continued his studies at MIT, and then went to work in the aerospace industry. Tosh loved helicopters and worked primarily in helicopter rotor design. He worked briefly with Kaig Kurkjian on the HK1 aircraft and worked for Vertol Corporation until it was purchased by Boeing in 1960. He closed out his professional career at Boeing Rotorcraft Systems in Ridley Park, PA. He also had a passion for teaching and taught at Swarthmore College, Drexel University and at Widener University. His daughter, Elizabeth, writes :"I am sure the Pickett was his favorite slide rule. He must have had one at work and one at home because I don't think I ever saw his desk at home with out a yellow slide rule on it." Expanded biography
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K&E 4080-3 Log Log Duplex Trig (1944)
ISRM 22.07.06.81
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K&E 4080-3 Log Log Duplex Trig sn059302 1944
Made in U.S.A. - Notice transitiion to RED LL00, LL0 scales, no K&E Logo
Note: 1937-1938 Scale set. Nautical trig scales 6,12 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; 2,168,144; 2,170,144; Pat. Pend. Cursor Patent 2,086,502
Front Scale::
LL00, LL0, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gifted by Cindy Tate of Bozeman, Montana
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K&E 4080-3 Log Log Duplex Trig (1948)
ISRM 12.04.23.01
Clifford, Sr. studied chemical engineering at Carnegie Tech in the 1920's and later mechanical engineering at the University of Buffalo.
He served in the Army as a Major in the Chemical Warfare Service at Edgewood Arsenal during WWII. During the Korean War, he served
as the Commanding Officer of the Engineering Agency at the Army Chemical Center at Edgewood and was promoted to Brigadier General.
His career in industry included serving as the Director of Central Engineering at FMC. Continued on right
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K&E 4080-3 Log Log Duplex Trig sn352819 1948
Made in U.S.A - 1939-1947 scale set Nautical trig scales in 6,12 div/deg
Front Scale:
LL0, LL00, A [ B, T, ST, S ] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original owner: Cliff L. Sayre Jr.
Donated by Marie Sayre Cole of Wappingers Falls, NY, Daughter of C.L. Sayre Jr. His father's Dietzgen 1759P is also in the gallery
Cont'd He graduated in 1947 with a B.S. in mechanical engineering from Duke University and was commissioned as an ensign in the US Navy. He served on the USS Hobson (DMS-26) until 1949.
He then attended Stevens Institute of Technology completing his M.S. in mechanical engineering, specializing in fluid mechanics. He was recalled to active
duty as Lieutenant JG in the US Navy in 1952 due to the Korean War He joined
the University of Maryland faculty as an assistant professor in 1955 and received his Ph.D. in 1961. He
continued on the faculty at University of Maryland through 1987 as a full professor and served as
associate Dean of Engineering for several years during his tenure. He authored an early book on computer aided design in 1985; "Design and Graphics Using
the Apple Computer, an Engineer's Guide." In 1993, he was
appointed Professor Emeritus of Mechanical Engineering, University of Maryland and in 1998 received
an A. James Clark School of Engineering Outstanding Commitment Award. Full Biography (pdf).
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K&E 4080-3 Log Log Duplex Trig c1948
ISRM 13.05.13.01 |
K&E 4080-3 Log Log Duplex Trig sn352343
Made in U.S.A - 1939-1949 scale set #2 (4th Variation) Trig scales in 6,12 div/deg
Patents: Upper stock face RE.20,984;1,930,852;2,168,056;2,170,144;Pat.Pend. Cursor: 2,086,502
Front Scale:
LL0 ϵ-.001 to ϵ-.1,
LL00 ϵ-1 to ϵ-10,
A [ B, T, ST, S ] D, DI, K
Back Scale:
L, LL1 ϵ.01 to ϵ.1,
DF [ CF, CIF, CI,
C ] D, LL3 ρ to ϵ10, LL2 ϵ.1 to ρ
Note: Only K&E with 1939-1949 scale set #2 (4th variation), and Exponent range marks using Lunate Epsilon symbol (ϵ) on Log Log scales, as a calculation aid. The black LL labels have red Epsilon, the red LL labels have black Epsilon.
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K&E 4080-3 Log Log Duplex Trig (1941)
ISRM 12.08.25.01
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K&E 4080-3 sn838161 1941
Made in U.S.A. by Keuffel & Esser Co., New York
Patents: Upper stock face RE.20,984;1,930,852;2,168,056;2,170,144;Pat.Pend. Cursor: 2,086,502
Note: 1939-1947 scale set. 6,12 div/deg trig scales used in nautical navigation
Front Scale:
LL0, LL00, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Note: Specimen has been reconstructed to halt deterioration of cursor and to replace broken lens.
Donated by Barbara Campbell of Livermore, CA, daughter of Reed W. Campbell
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This slide rule was issued to Reed W. Campbell (1923-present) by the United States Naval Academy, Annapolis, MD,
when he entered as a plebe in 1942. He scratched his initials in the stock along with aids on the Log scales. Mr. Campbell graduated from the US Naval Academy in June 1945. After his tour
of duty in the Navy, he taught engineering at Grove City College in Pennsylvania and attended graduate school at
the University of Pittsburgh. He became a licensed Professional Engineer. Mr. Campbell went on work for
Air Products & Chemicals in 1960, rose to the head of design engineering department and retired in 1983.
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K&E N4080-3 Log Log Duplex Trig (1949-54)
ISRM 19.03.31.03
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K&E N4080-3 Log Log Duplex Trig sn743809
Made in U.S.A. circa 1949-1954
Note: Laminated Mahagony edge
Front Scale: Note: 6,12 div/deg
LL01, K, A [ B, T Cot, ST, S Cos ] D, L, LL1
Back Scale:
LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Original Owner: John Robert Baumann
Gifted by G. Jeffroy Bauman, G. Jeffery of Royerford, Pensylvania
John.Robert Bauman was an Electrical Engineer at Philidelphia Electric Company from 1950-1962, He then became a manager and finally supervising buyer.Picture is from his wedding in 1947.
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REF K&E 4080-3 Log Log Duplex Trig
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K&E N4080-3 sn798671
Made in U.S.A. circa 1949-1954 Trig scales in 6,12 div/deg
Front Scale:
LL0, LL00, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: John Vincent Atanasoff, (1903-1995) Father of the First Digital Computer.
The Atanasoff-Berry Computer was the world's first electronic digital computer which was built by
John Vincent Atanasoff (Prof. Physics and Mathematics) and Clifford Berry at Iowa State University during 1937-42. It incorporated
several major innovations in computing including the use of binary arithmetic, regenerative memory,
parallel processing, and separation of memory and computing functions. In an interview between Michael Konshak,
the ISRM curator, and John V. Atanasoff II (1927- ), who lives in Boulder, Colorado shared a little known fact. John Junior stated
that his father told him that he received his inspiration for the Digital Computer, after trying to make a more accurate slide
rule. He first built an analog machine, called the "laplaciometer", that used two long lengths of parallel 35mm photographic
film mounted on spools,
with images of [at least] the C and D scales that could be rotated independently to perform calculations.
He became frustrated with the lack of mechanical stability and thermal expansion of the film that created errors. As an
electronic engineer, he then wondered if he could do it electronically. this "Epihany" is the spark (or flash
of genius) that determines the origination of any invention and subsequent U.S. Patents.
On October 19, 1973, US Federal Judge Earl R. Larson signed his decision following a lengthy court
trial which declared the ENIAC patent of Mauchly and Eckert invalid and named Atanasoff the inventor
of the electronic digital computer - the Atanasoff-Berry Computer or the ABC. This scan of one of his
three slide rules at ISRM were provided by the Iowa State University Library,
References: John Vincent Atanasoff Jr. and Atanasoff Archives.
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K&E N4080-3 Log Log Duplex Trig (1948)
ISRM 11.11.22.01 |
K&E N4080-3 sn470704
Made in U.S.A.- (1948 Scale set, DI sale added in 1949).Trig scales in 6,12 div/deg
Note: Model number and patents on edge.
Front Scale:
LL01, K, A [ B, T Cot,
ST, S Cos ] D, L, LL1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: W.R. O'Neill marked on black Cardboard sleeve.
On flap: USN V-5
(the United States Navy V-5 preflight program during WWII)
This exact model, sn468659, was also used by Ted Alt Jr. of Phoenix, AZ. who purchased it in the 1950s.
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K&E 4081-3 Log Log Duplex Decitrig (1937)
S005 |
K&E 4081-3 Log Log Duplex Decitrig sn618580
Made in U.S.A. - Notice BLACK LL00, LL0 scales
Note: 1937-1938 Scale set, Trig scales in decimal degrees: 5,10, 20 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; 2,168,144; Pat.Pend
Front Scale:
LL00, LL0, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
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K&E 4081-3 Log Log Decitrig w/Magnifier (1938)
ISRM 18.10.22.01
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K&E 4081-3 Log Log Decitrig w/Magnifier sn688535 (1938)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1939-1947 Scale set, no logo. Trig scales in 5,10, 20 div/deg
Patent Markings: Pats. 1,488,686; 1,930,852; Pat.Pend. Cursor: 2,086,502
Front Scale:
LL0, LL00, A [ B, T Cot, ST, S Cos ] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Belonged to Donald Capp, Sr. Gifted by his son Keith Capp of San Diego, California
Donald Capp (1922-2004) was a veteran of World War II and served in the U.S. Navy aboard the light cruiser, U.S.S. Pasadena
(CL65) from May 25, 1943 to Feb. 15, 1946. He was present in Tokyo Bay at the signing of Japan's surrender in Sept. 1945.
He attended U.C.L.A. While there, he was an offensive and defensive lineman on U.C.L.A.'s 1946 (undefeated) and 1947 football
teams. He was a member of U.C.L.A.'s 1947 Rose Bowl team and was selected to be a member of the West team in the 1947 Hula Bowl.
He graduated from U.C.L.A. in 1949 with a B.S. degree and a Masters Degree in 1950 from California State University at
Los Angeles and began a long career in secondary education. He taught and coached football and wrestling in Corcoran, Ca.
in 1951-52 and taught in Montebello, Ca. in 1952-53. In 1953, he began a 37 year career with Los Angeles Unified School
District. He was teacher, coach and administrator at four schools in the District Garfield High School, Horace Mann Junior
High School and Southgate and Bell High Schools. |
K&E 4081-3 Log Log Duplex Decitrig w/Logo (1947)
ISRM 10.03.01.03
K&E sleeve Jean Jolkovski W8EGM\A8EGM 1948
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K&E 4081-3 Log Log Duplex Decitrig w/Logo sn365785 (1947)
Made in U.S.A. - Note: start of RED LL00, LL0 scales
Patents listed on top of stock:Pats. R.E. 20,984; 1,930,852; 2,168,056; 2,170,144; Pat.Pend.
Note: 1939-1947 Scale set, and "K&E" logo on slide
Front Scale: Note: 5,10, 20 div/deg
LL0, LL00, A
[ B, T Cot, ST, S Cos
] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original owner: Jean Jolkovski W8EMG\A8EMG (embossed on outside of sleeve). Jean Jolkovski, Ohio Univ. written inside flap Other name on flap: Brodie
Gifted by Martha H. Prince in memory of the John Prince Collection, Tuscon, AZ
Jean Jolkovski (1926- ), was issued this slide rule by the U.S. Government in 1948 after serving in WWII, as part of the G.I. Bill
while attending Ohio University. Unfortunately it was stolen in 1949, and he hadn't seen it since. In 2010 Martha Prince donated the slide rule, which was part of her late husband, John Prince's extensive collection to ISRM. In the process of doing some restoration, the ISRM curator looked at the sleeve and noticed there was an Amateur 'Ham' Radio call sign W8EGM\A8AGM on the sleeve. The curator, also a Ham KI0CC, discovered that a Jean Jolkovski was residing in Phoenix, AZ and is still involved in Ham radio with a call sign of W4CIH. When contacted, Jean affirmed that it was his. After this was stolen, Jean paid $20 out of his pocket for a new one as the G.I. Bill only issued one/veteran going to college. Jean received a BS in Electrical Eengineering and MSA in Information Technology and had a career Federal Government contract law. Over 50 years in Government contracts for technology and services. Small business a specialty. Public speaker; workshops on "Doing Business with the Government" , "How to write a winning proposal" and related subjects. Hands-on counselor. As of 2014, Jean is 87 and is an active SCORE mentor. He is the vice president of the Quarter Century Wireless Association Chapter 16 - Barry M. Goldwater Arizona Chapter.
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K&E 4081-3 Log Log Duplex Decitrig (1939)
ISRM 15.07.07.01 |
K&E 4081-3 Log Log Duplex Decitrig sn830160 (1939)
Made in U.S.A. by Keuffel & Esser Co., New York
Patent Markings: Pats. RE.20,984; 1,930,852; 2,168,144; Pat.Pend
Note: 1939-1947 Scale set, no Logo.
Front Scale: Note: 5,10, 20 div/deg
LL0, LL00, K, A [ B, T Cot, ST, S Cos ] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Original owner: R.L. Stewart (name etched on braces)
Gift of Steve Stewart. Belonged to Father R.L. Stewart
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K&E 4081-3 Log Log Duplex Decitrig (1940)
ISRM 22.07.25.01.X
Gina's second child, Donald Smith (1949-), inherited her interest in math along with her slide rule. Don graduated from the Engineering
Program at Brown University {1967-1971}. Don traveled to West Point while playing tennis for Brown. Since the
West Point curriculum included a strong focus on engineering, it seemed that every cadet he saw on campus had a slide rule attached to their belt.
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K&E 4081-3 Log Log Duplex Decitrig sn804301 (1940)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1939-1947 Scale set, no logo
Patent Markings: Pats. R.E. 20,984; 1,930,852; 2,168,056; 2,170,144; Pat.Pend. Cursor: 2,086,502
Front Scale: Note: 5,10, 20 div/deg
LL0, LL00, A [ B, T Cot, ST, S Cos ] D, DI, K
Back Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Belonged To Mary Regina (nee Clavin) Smith (1922-2009). Gifted by son Donald Smith of Saint Johns, Florida.
Gina Clavin Smith (1922-2009) Born in Providence to Joseph and Catherine (Chamberlain) Clavin, she was the second of seven children. She graduated from \
St. Xavier's High School with honors in 1939 and Rhode Island College in 1943 where she was certified as a math teacher.
Beautiful and smart, she had the distinction of being the homecoming Queen in both High School and College.
She worked as an engineering assistant for American Airlines in New York upon graduation, As part of her training, she
attended the Academy of Aeronautics at LaGuardia Airport.Upon her mother's death she returned to her home town of
Cranston to help care for her siblings. In 1944 she married Edward Ted Smith, who was assigned to ground support for the B-29s that
flew bombing missions over Japan from their base in Guam. They lived for a time in Denver, Colo..
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K&E N4081-3 Log Log Duplex Decitrig (1950)
ISRM 18.04.06.23 |
K&E N4081-3 sn466804 (1950)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1949 Scale Set. No 1/e on LL02 and LL03. No SRT. No DI .Modern logo on right. Patents and model numbers on edge.
Front Scale: Note: 5,10, 20 div/deg
LL01, K, A [ B, T Cot,
ST, S Cos ] D, L, LL1
Back Scale:
LL02, LL03, DF [ CF, CIF, CI,
C ] D, LL3, LL2
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K&E N4081-3 Log Log Duplex Decitrig (1951)
ISRM 23.05.11.01
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K&E N4081-3 sn599366 (1951)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1949 Scale Set. No 1/e on LL02 and LL03. No SRT. No DI .Modern logo on right. Patents and model numbers on edge.
Front Scale: Note: 5,10, 20 div/deg
LL01, K, A [ B, T Cot,
ST, S Cos ] D, L, LL1
Back Scale:
LL02, LL03, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: Walter Charles Miller Ph.D (1918-1989)
Gifted by his daughter, Sara M. Beagan and Peter Beagan.
Walter Charles Miller (1918-1989), originally from South Bend, Indiana, was a nuclear physicist who was a scientist on the Manhatten Project in Los Alamos, New Mexico from 1944-1945..
He was on the team that developed the first nuclear bombs, Big Man and Little Boy.. His daughter Sara M. (Miller) Beagan was born in Los Alamos. He received his B.S.from St. Joseph's College, Philadelphia in 1940; his M.S.from the University of
Notre Dame in 1942. His Physics Dissertation was: A Study of the Continuous X-Ray Spectrum by Means of Nuclear Excitation..
He became a professor of Physics at Notre Dame from 1948-1981 and was the Physics Department Chair beginning in 1975.He helped construct the tandem accelerator.
See his Dietzgen 1776 Redi-Rule in the Dietzgen gallery
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K&E N4081-3 Log Log Duplex Decitrig (1951)
REF S536 |
K&E N4081-3 sn602728 (1951)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1948-1953 Scale Set
Front Scale: Note: 5,10, 20 div/deg
LL01, K, A [ B, T Cot,
ST, S Cos ] D, L, LL1
Back Scale:
LL02 ends with 1/e, LL03 begins with 1/e, DF [ CF, CIF, CI,
C ] D, LL3, LL2
 |
Mr. Glen Williams was born November 4, 1918 in Adelaide, South
Australia. Graduated from University of Detroit, BME, 1952.
Lt in the U.S. Army. Registered Professional Engineer. Board of
Governors 1960-61 of Michigan Chapter of American Society of
Heating, Refrigerating and Air-Conditioning Engineers (ASHVE).
Employed by Carrier Corporation since 1952 in engineering and
sales capacities. Died September 13, 2004 in Americus, Georgia.
Click
for More Pictures |
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K&E N4081-3 Log Log Duplex Decitrig (1952)
ISRM 13.08.27.01 |
K&E N4081-3 sn717411 (1952)
Made in U.S.A. Note ST (not SRT) scale and lack of DI scale, The inlaid laminate edges were introduced in 1952-1953.
Patents on lower stock edge: US 2,168,056;2,170,144;2,422,649;2,500,460;2,285,722
Front Scale: Note: 5,10, 20 div/deg
LL01, K, A [ B, T Cot,
ST, S Cos ] D, L, LL1. (Note: ' and " gauge marks on ST scale)
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: Anderson, marked on inside of sleeve flap
Gift of Arthur Anderson, Boulder, Colorado
Art bought this slide rule as a freshman at Rensselaer Polytechnic Institute in Troy, New York in 1952. RPI is the United State's oldest technological university.
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K&E 4081-3 Log Log Duplex Decitrig (1954)
ISRM 13.08.27.01
Gregory J. Patterson (1935-2014), of Towson, Maryland, obtained this slide rule soon after high school and used it in his career. Greg went to Marquette University in Wisconsin and graduated with a BS in Mechanical Engineering. He worked at Allis-Chalmers out of college, then Boeing where he worked on the Saturn 5 rockets, then Westinghouse for 32 years where he retired in 2000 as the Manager of Manufacturing Engineers. He worked on Airborne Early Warning and Control Systems (AWACS) while at Westinghouse. His name is marked on inside of sleeve flap. He had 5 children. (More info on right...)
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K&E 4081-3 Log Log Duplex Decitrig sn717411 (1954)
Made in U.S.A. Note the 1954 scale set was only produced for one year, the DI scale was added back again and the L scale move from lower stock to the upper stock. The "N" prefix was dropped from the model number. The inlaid laminate edges were introduced in 1952-1953. ST scale changed to SRT in 1955.
Patents on lower stock edge: US 2,168,056; 2,170,144; 2,422,649; 2,500,460; 2,285,722
Front Scale: ( 5,10, 20 div/deg):
LL01, L, K, A [ B, T Cot,
ST, S Cos ] D, DI, LL1. (Note: ' and " gauge marks on ST scale)
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gifted by son Tim Patterson and family.
(Cont'd) His daughter, Catherine McFeeters of Baltimore, Maryland wrote: "My Dad was really smart. Sometimes it seemed like he was a human Wikipedia. He wasn't one who knew a little bit about a lot of things, he was one of those rare people who knew a lot about a lot of things.
He was a gentle and thoughtful man who analyzed everything in life. He loved projects. Since his death, I've heard many stories about the projects he worked on with the people he cared about. And when you worked on a project with Greg, it may have taken longer than you thought it should, but once it was done, you knew it was always done the best it could be.
His final project was the miniature train route he built around the perimeter of his living room that was suspended 8 feet off the ground. Over a span of about 5 years, he worked on this project sharing his progress with anyone that was willing to take the time to listen. And whether or not you are a train enthusiast, it is easy to see that this a true work of art, just like my Dad's life."
Greg's Trains Movie 1 (MOV), Greg's Trains Movie 2 (MOV)
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K&E 4081-3 Log Log Duplex Decitrig (1954)
ISRM 18.03.20.01
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K&E 4081-3 Log Log Duplex Decitrig sn703557 (1954)
Made in U.S.A. Note the 1954 scale set was only produced for one year, the DI scale was added back again and the L scale move from lower stock to the upper stock. The "N" prefix was dropped from the model number. The inlaid laminate edges were introduced in 1952-1953. ST scale changed to SRT in 1955.
Patents on lower stock edge: US 2,168,056; 2,170,144; 2,422,649; 2,500,460; 2,285,722
Front Scale: ( 5,10, 20 div/deg):
LL01, L, K, A [ B, T Cot,
ST, S Cos ] D, DI, LL1. (Note: ' and " gauge marks on ST scale)
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Belonged to Robert N. Curry. Gifted by his friend Alice Bowling of Louisville, Kentucky.
Robert N. Curry was a 1949 graduate of Western Kentucky University. Bob was the head of Measurement for Texas Gas Transmission Corp and authored a book on Natural Gas processing Fundementals of Natural Gas Conditioning. He was former chairman of the AGA Transmission Measurement Committee. Several of his slide rules are currently in the ISRM galleries.
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K&E 4081-3 Log Log Duplex Decitrig (1955-1962)
ISRM 10.03.01.01 |
K&E 4081-3 Log Log Duplex Decitrig sn2266 (1955-1962)
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Laminated edges
Front Scale: Note: 5,10, 20 div/deg
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
LL1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Note: ST scale changed to SRT in 1955. Note the SRT stamp on the box label,
indicating the change from the ST scale on prior models.
A 1957 K&E Receipt shows $29.95(USD). A later price written on the box shows $25.00(USD).
Donated by Martha H. Prince in memory of John Prince, Tuscon, AZ
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REF K&E 4082-3 Log Log Duplex Decitrig With F Scale |
K&E 4082-3 Log Log Duplex Decitrig With F Scale
Made in U.S.A. - sn 769826
Front Scale:
LL0, LL00, A [ B, T Cot,
ST, S Cos ] D, DI,
F
Back Scale:
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Archive - Scan Donated by BajaRon sliderulecentral.com
Sleeve with Magnifying Cursor.- Related: 1929 (PDF) and 1938 Bell Labs article
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K&E 4083-3S Log Log Duplex Vector 1939
ISRM 16.09.19.01.X
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K&E 4083-3 Log Log Duplex Vector sn395769 1939
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 1st scale set, Full laminated edges..
Front Scale: Note: 5,10, 20 div/deg
L, LL1, DF [ CF, CIF, CI,
C ] D, LL3, LL2
Back Scale:
LL0\, LL00,
A [ B, T Cot, ST, S Cos
] D, Th, Sh2, Sh1
Gift Of Rob Snider. Belonged To Father Homer D. Snider..
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K&E N4083-3S Log Log Duplex Vector 1948
ISRM 09.10.27.01
Vern with a Saturn 1B (1969) and with Mike Konshak(2009)
shown donating his personal slide rule to ISRM.
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K&E N4083-3 Log Log Duplex Vector sn485861 1948
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 2nd scale set, Full laminated edges.
Front Scale: Note: 5,10, 20 div/deg
L, LL01, LL1, A [ B, T Cot, ST, S Cos
] D, Th, Sh2, Sh1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Donated by Vernon Estes, Canyon City, Colorado..
Vern is the founder of Estes Industries who made the first safe black powder rocket motors in
1958 used by members of the newly formed National Association of Rocketry (NAR) . Vern purchased this slide rule
in downtown Denver, Colorado in 1948 when he was in his 3rd year at Westminster Union High School. He used it for advanced math classes in
high school, then later at Central College in McPherson, Kansas. He later founded Estes Industries which began his career
in model rocketry. He says "my trusty slide rule was an indispensible companion". Based on his own experiences, he offered slide rules (see the Pickett 120)
in his sales literature (circa 1964) to help young rocketeers (of which the curator of ISRM was one). Vern engraved his name on the slide rule
so it would not get mixed up with his brother Earl Estes' slide rule, who bought his at the same time and later used it in his engineering career at Hughes Aircraft.
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K&E N4083-3S Log Log Duplex Vector 1948
ISRM 19.05.04.02
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K&E N4083-3 Log Log Duplex Vector sn739244 1948
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 2nd scale set, Inlaid mahogany edges..
Front Scale: Note: 5,10, 20 div/deg
L, LL01, LL1, A [ B, T Cot, ST, S Cos
] D, Th, Sh2, Sh1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gift of Terry Whitsel of Loveland, Colorado.
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K&E 4083-3 Log Log Duplex Vector (1952-1956)
ISRM 14.07.02.44
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K&E 4083-3 Log Log Duplex Vector sn833117
Made in U.S.A. by Keuffel & Esser Co., New York
Note: 3rd scale set. Inlaid mahogany edges.
Front Scale: Note: 5,10, 20 div/deg
Sh1, Sh2, Th, A [ B, T Cot, ST, S Cos
] D, DI, LL01,
LL1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Belonged to Claude Ellis Johnson (1918-2003) NASA Engineer, Huntsville, Alabama.
Gift of the Leroy Hausler Collection.
Claude Ellis Johnson (1918-2003), Born in Senoia, Georgia, was a graduate of Georgia Tech ca1955, and served in the U.S. Navy as an instructor on Corpus Christi, Texas. After WWII, Claude worked on the Allatoona Dam in Cartersville, Georgia and the Jim Woodruff Dam in Chattahoochee, Florida for the Army Corps of Engineers. He was later hired by the Army Missle Command at the Redstone Arsenal in Huntsville, Alabama and subsequently transferred to the new NASA Space Development programs, led by Wernher von Braun. Claude contributed to the development or adaptation of the rockets used in the Apollo moon shots, and worked there until he retired. from a letter to Leroy Hausler from C.E. Johnson's daughter, Claudia dated 10/15/2007 .
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K&E 4083-3 Log Log Duplex Vector sn475632 1961
ISRM 13.05.05.02.X |
K&E 4083-3 Log Log Duplex Vector sn475632 1961
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: Note: 5,10, 20 div/deg
Sh1, Sh2, Th, A [ B, T Cot, SRT, S Cos
] D, DI, LL01,
LL1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Note 1: ST scale label changed to SRT in 1955.
Note 2: the Th, Sh1 and Sh2 scales are back on the upper stock as it was in 1938-1947.
The N4083-3 1948-1954 versions has them on the upper stock
Note 3: notice the rivet position on the cursor tension spring as compared to the N4083-3 1948 version above.
Original Owners (Marked on sleeve flap): David Wells, Jerry Wells, "Fred's Rule"
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Important Dates for the model 4088 Polyphase line of slide Rules
(and other K&E's)
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1913-1915 A "column cursor" was introduced for duplex rules.
1915 All slide rules were fitted with an all glass cursor. The first issue had metal end blocks.
1916 The metal cursor cursor blocks on the all glass cursor were replaced with plastic ones. The 4088-5 20" Polyphase slide rule introduced.
1922 "B" scale added to the slide on 4088's. The 4088-1 was added to the family
1924 Serial numbers were added to slide and stock. Previous slide rules had 1 to 3 production numbers stamped in the end.
1933 The plastic cursor blocks were modified to have flanges to cover the edge of the glass.
1936 The "improved cursor" with a metal rim around the glass was introduced. The font
1938 Last year of 4088's, replaced with models 4070-3 (decimal deg) and 4071-3 (minute/sec deg)
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8/8/2024 4:42:31 PM
K&E 4088-1 Polyphase Pocket Duplex
ISRM 18.07.16.02
Arnold Davidson Straussman (c1908-1983) was an electrical engineer who loved the elegance of math, as well as science and the arts. After graduating from Pratt Institute, NY in 1929, he was employed by the Jersey Central Power and Light Company until 1940. Continued on right,
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K&E 4088-1 sn298504 Polyphase Pocket Duplex 1922
Made in U.S.A.- All Glass Cursor
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Owned by Arnold D. Strausman, gifted by his daughter Judith B. King of Miami Shoes, Florida.
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Cont'd The majority of Arnold's career was spent with Ebasco Services headquartered in NY. Ebasco assigned him to a number of domestic and overseas projects. He won numerous awards in Ebasco's Photography Club competitions. His daughter, Judith King write: "He was an amazing man, and introduced me to astronomy and Scientific American as soon as I could read. He loved math in its pure forms, but also the practicalities of what you could design and build with it. We designed and built a simple radio together before I was out of grade school. " Note: He is listed in Amatuer Radio Stations of the United States June 30, 1920: Call sign: 2AUH (18 watts), located at 601 Asbury Ave, Asbury Park, NJ. Evidently Arnold was building radios while still in high school. This was before W and K prefixes were to call signs in the USA.
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K&E 4088-1 Polyphase Pocket Duplex
ISRM 13.11.22.01 |
K&E 4088-1 sn540371 Polyphase Pocket Duplex 1923
Made in U.S.A.- All Glass Cursor
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner: Snodgrass, given as a Christmas gift in 1923. Later owned by O. Rittmaster, R.E 4296
Sleeve stamped: 'XMAS 1923' a gift from the 'McKINNEYS', for a young Mr. SNODGRASS.
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K&E 4088-2 (Column Cursor) c1913
ISRM 22.03.01.03 |
K&E 4088-2 (Column Cursor) c1913
Made in U.S.A. by Keuffel & Esser Co., New York patent Dec 22, 1908
Front Scale:
K, A [ S, T, CI, ] D, L
Back Scale:
DF [CF, CIF, C ] D
Original owner:H.O. Bishop, Ferguson (marked on sleeve)
Gift Of Philip E. Stanley Collection
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K&E 4088-2 8-inch Polyphase Duplex
REF S332 |
K&E 4088-2 Production #63 1913-1921
Made in U.S.A. - 8" scales - All Glass Cursor, no "B" Scale
Front Scale:
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner: Les Moore, MI - Tool and Die Maker
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K&E 4088-2 8-inch Polyphase Duplex
REF S310 |
K&E 4088-2 S/N: none 1913-1921
Made in U.S.A. - 8" scales - All Glass Cursor no "B" Scale
Front Scale:
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner: H.I.W
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K&E 4088-2 Polyphase Duplex sn242068 1928
ISRM 22.03.01.05 |
K&E 4088-2 Polyphase Duplex sn242068 1928
Made in U.S.A. - 8" scales - All Glass Cursor
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gift Of Philip E. Stanley Collection
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K&E 4088-2 Polyphase Duplex sn316259 c1936
ISRM 22.03.01.02 |
K&E 4088-2 Polyphase Duplex sn316259 c1936
Made in U.S.A. - 8" scales - New Improved Cursor
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner (Name on sleeve flap):R.E. McKinsley, Chi Phi House.
Gift Of Philip E. Stanley Collection
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K&E 4088-3 Polyphase Duplex Column Cursor c1913 |
K&E 4088-3 Polyphase Duplex Column Cursor Lot96 c1913
Made in U.S.A. by Keuffel & Esser, NY. - Column Cursor - No B Scale:
Front Scale:
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gift Of Philip E. Stanley Collection
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K&E 4088-3 Polyphase Duplex
ISRM 13.06.25.06
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K&E 4088-3 Polyphase Duplex, Production #38
Made in U.S.A. - All Glass Cursor - c1913-1921
Front Scale:
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gifted by Norma Tanner of Libertyville, Illinois
Norma has been a participant of the ISRM Slide Rule Loaner Program. In addition, she had her own collection that she loaned out to students. This one is part of the collection sent to ISRM. Norma writes: "After teaching math and/or science for 24 years, I am now enjoying retired life.
Having been educated at MIchigan State University during a time when using a slide rule was the only technology available for advanced calculations, I decided to create a unit of study for my students that would introduce them to the slide rule. My goals were for students to strengthen their ability to estimate and use scientific notation, as well as to discover the historic significance of the slide rule. While it was hard for them to put aside their electronic calculators, they were fascinated, engaged, and thrilled when they could multiply 2 x 3 and actually get 6 instead of 5.9.
In the end my students were happy to be reunited with their calculators, but had a new appreciation for the value of estimating, scientific notation, and accuracy in measurement. Goals met! "
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K&E 4088-3
REF
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K&E 4088-3 No snc1915 (Replacement Cursor c1935)
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
This slide rule belonged to Linus Carl Pauling [1901-1994], one of the most influential
chemists in history as well as one of the most important scientists of the 20th century. One of
only 4 individuals ever to have won solo Nobel Prizes in separate and unrelated fields - for chemistry
in 1954, and the Nobel Peace Prize for his tireless campaign against atmospheric nuclear bomb testing
in 1962. He found this slide rule when he was 17 while still in high school. When the rightful owner
was not found, he carried this with him to Oregon State College and used it until he graduated. See his
diary page on the left, dated September 23, 1917. The cursor must have been replaced later as that type
was not available until 1935. Images courtesy of
Oregon State University Library Special Collections
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K&E 4088-3 All-Glass Cursor Lot#843 c1916
ISRM 14.11.07.01
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K&E 4088-3 Lot#843 c1916 All Glass Cursor
Made in U.S.A. by Keuffel & Esser Co., New York
Patents Stock: Pat. June 5, '00, Dec 22, '08. Cursor: Pat. 8.17.15
Note: Patents on top of scales and Keuffel & Esser below the scales on the left end of stock.
Front Scale: K, A [ S, T, CI ] D, L
Back Scale: DF [ CF, CIF, C ] D
Gifted by Janet Walker DuBane in memory of her father Merle H. Walker (1911-2013)
This slide rule belonged to Merle H. (Mike) Walker. was one of the most important gun and cartridge designers of the 20th Century, and a leading proponent of benchrest shooting. He graduated from Iowa State University in 1934 with a degree in Mechanical Engineering.
Mike worked for Remington Arms Company for 37 years, as a lead designer and engineer. While at Remington, he created many of Remington's most popular bolt action rifles. For many years, Mike served as Director of Research and head of the Custom Shop at Remington's, Ilion, NY facility.
Mike led the development of many important Remington rifle designs, including the Rem m700, Rem 40X, Rem m721, and Rem m722. Walker held 12 patents from 1945-1972, mostly for trigger designs, and the Remington Stud Driving tool. The History of Remington Firearms by Roy C. Marcot states:
"Without a doubt, the Remington Model 700 is the most popular commercial, high-power, bolt-action rifle in the world. The Model 700 is actually a product-improved Model 721 and Model 722 bolt-action rifle, the brain-child of Merle 'Mike' Walker and his Remington design team in the 1940s."
Mike is largely credited with the development of the .222 Rem (aka "Triple Deuce") which dominated short-range Benchrest competitions. The B&W photo is from Field and Stream magazine.
Mike was one of the "founding fathers" of the International Benchest Shooters (IBS). Mike shot in the 2010 IBS Nationals at age 99 and worked in his shop even at the age of 101. He was a lifelong member of the National Rifle Association and the Campfire Club of America, and was credited in Cambridge Whos Who in December 2012. His daughter, Janet Walker DuBane, is a graduate of Cornell University.
Patents: US002383356 1945, US002514981 1950, US002585195 1952, US002645772 1953, US002719300 1955, US002809391 1957, US002912779 1959, US002935595 1960, US003054110 1962, US003075312 1963, US003612646 1971, US003631622 1972.
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K&E 4088-3 (1915-1921 with 1936 Cursor)
ISRM 11.11.05.01 |
K&E 4088-3 No snc 1915 Replacement Cursor c1936
Made in U.S.A. - Improved Cursor, no B Scale:
Note: Patents on top of scales and Keuffel & Esser below the scales on the left end of stock.
Front Scale :
K, A [ S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Previous Owner: Sheldon Hart
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K&E 4088-3 (1921 AGC) w/ B Scale
ISRM 22.05.22.23.X |
K&E 4088-3 Lot92 1921 All-Glass Cursor w/ B Scale
Made in U.S.A. - with B Scale added
Note: "Keuffel & Esser Co. N.Y." below the scales on the left end of stock, "Pat. June 5, '00 Dec.22, '08" followed by "Made in U.S.A."
Note: Glass lens replaced with ISRM acrylic reproduction.
Note: Pat.8.17.15 on cursor block. Times Romans"
Front Scale :
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gift of Judy Fink, Franklin G. Fink collection
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K&E 4088-3 Polyphase Duplex (1924)
ISRM 14.07.02.42
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K&E 4088-3 Polyphase Duplex sn70104 (1927)
Made in U.S.A. - All Glass Cursor.
Note: Patent Marking: Keuffel & Esser Co. NY, followed by: Pat.June 5, '00 Dec. 22, '08, Made In USA
Note: Scale labels use Times Romans" font.
Front Scale
K, A [ B, S, T, CI ] D, L
Back Scale
DF [ CF, CIF, C ] D
Original Owners - On SR: J.E. Jennings '27, Sleeve: J. Ed. Jennings
Gift of Ed Millis, Dallas, Texas
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K&E 4088-3 Polyphase Duplex (1927)
ISRM 15.06.17.02
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K&E 4088-3 Polyphase Duplex sn137431 (1927)
Made in U.S.A. - All Glass Cursor. (Restored with plastic lens with red hairline.
Note: Patent Marking: Pat.June 5, '00 Dec. 22, '08, followed by Keuffel & Esser Co. NY, Made In USA
Note: Scale labels use Times Romans" font.
Note: K&E Logo and patent dates relocated on stock
Front Scale :
K, A [ B, S, T, CI ] D, L
Back Scale :
DF [ CF, CIF, C ] D
Original Owners - On sleeve: HATHAWAY - AX
Gift of Ellen hathaway, Indian Head park, Illinois
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K&E 4088-3 Polyphase Duplex (1927)
ISRM 19.06.18.01
 This K&E 68-2273 green leather sleeve was ordered as a replacement for the one that came with the slide rule.
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K&E 4088-3 Polyphase Duplex sn162428 (1927)
Made in U.S.A. - New Improved Cursor (originally All Glass Cursor).
Note: Patent Marking: Pat.June 5, '00 Dec. 22, '08, followed by Keuffel & Esser Co. NY, Made In USA
Note: Scale labels use Times Romans" font.
Note: K&E Logo and patent dates relocated on stock
Front Scale :
K, A [ B, S, T, CI ] D, L
Back Scale :
DF [ CF, CIF, C ] D
Gift of Shirley Brooks of Jacksonvill, FL, Peter's widow.
Original Owner: Peter Brooks Morton (c.1938-2017). Peter graduated from the University of Akron with a BSEE in Electric Engineering, Medical Electronics. He received his Masters in Electrical Engineering, Computer Science from Polytechnic Institute of New York. He was Assistant Professor, Engineering Director of Rockland Community College from 1964-1984. and was Adjunct Professor at SUNY College at New Paltz, Mathematics and Computer Science Department 1984-1985. He also was Adjunct Professor at FIT's Manufacturing Management, Science/Math Dept.
He retired in October 2006 from the Fashion Institute of Technology where from 1985 to June 2006 he worked as the Micro Computer System Specialist and late as Campuswide Network Manager. Hee had his own business, Dearniac Computer Services. He published several books including "Electronic Technicians Handbook: Power Supplies; Batteries" Theory & Problems in Electrical Technology, Schaum's College Outlines"; Technical and Instructional Manuals, E-Com Corporation.
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K&E 4088-3 Polyphase Duplex (1922-1934)
ISRM 13.07.03.28 |
K&E 4088-3 Polyphase Duplex sn357810
Made in U.S.A. - All Glass Cursor
Note: Scale fonts changed. see previous 4088-3's
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner: Gold stamped Lawrence Haner leather sleeve.
Donated by Daniel Swerdlow, Bethesda, Maryland
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K&E 4088-3 Polyphase Duplex (1933-1935)
ISRM 11.10.30.01 |
K&E 4088-3 Polyphase Duplex - sn406555
Made in U.S.A. - All Glass Cursor, Flanged Plastic Blocks - 1933-1935
Front Scale (added B scale in 1922)
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Original Owner: A.C. Funk
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K&E 4088-3 Polyphase Duplex (1934)
ISRM 22.02.15.01 (Replaced 13.07.03.13)
 Expanded Biography hand-written by Stephen Kozerowitz
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K&E 4088-3 Polyphase Duplex sn450985 1934
Made in U.S.A. - Has 1936+ New Improved cursor
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gift Of Stephen Kozerowitz Belonged To Father, Max Kozerowitz. Used by both men.
Max Kozerowitz, PE, purchased this slide rule in 1934 when he enrolled at City College of New York City, and later The Cooper Union in NYC.He also used it
later as a weight and balance engineer for Martin Aircraft Company during WWII. He joined the NYC Board of Water and was listed in the city record as a
NYC Engineering Inspector on August of 1938. The city record of
March 21, 1942 shows Max being promoted from Archetectural daftsman to Assistant Architect with an annual salary of $4500. He worked on
dams and tunnels that supply drinking water to the city. The K&E Polyphase was in constant use for construction projects and it was used to pass his
Professional Engineer exam in 1949. After he transferred to the NYC planning Commision in 1955, the slide rule came home. Max retired as the
Deputy Chief Engineer in 1973.Max gave it to his son, when Stephen Kozerowitz left for college in the fall of 1955. Stephen used the K&E after
graduating as an engineer and worlked on the second deck of the George Washington Bridge, the World Trade Center in 1965. By 1970 Stephen went
from engineering roles to project and program managemeny and the duplex slide rule was replaced by electronics by 1979.
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K&E 4088-3 Polyphase Duplex (c1935)
ISRM 22.09.20.01
"Ken Ervin" written in sleeve flap. Kenneth Edward Ervin working at the B-24 Project, Oklahoma City plant, Jan. 1944 (above, back row 2nd from left).
Photos on right from WWII in the Navy and at Koppers Co.
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K&E 4088-3 Polyphase Duplex sn417709 c1935
Made in USA by Keuffel & Esser
Patent markings: June 5, '00; DEC 12, '08 (on lower stock). Patent Pending (on Cursor block)
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Donated by Andrienne Ervin of Tustin, California. daughter of Kenneth Edward Ervin
Kenneth Edwar Irvin, Sr. (1920-2002) was born in San Diego, California while his father was serving in the armed forces.
He was sent as a child to exclusive boarding schools and spent summers on his grandmother's farm in Media, Pennsylvania.
He graduated from St. Andrew's School in Middleton , Deleware in 1939. He meet his wife. Alice Richard, while working summers at Ashley park, New Jersey.
and were married in 1940. He attended Roosevelt Aviation School on Long Island and became a certified A&P aircraft mechanic and pilot and took a job
with Pan American Airlines in Florida.He attended the University of Michigan, majoring in Aeronautical engineering and worked at the B-24 bomber plant in Willow Run.
He was drafted into the U.S. Navy in 1944. He sustained back injuries on a Navy supply ship,.After his recovery he reloacated his family in 1951
to accept a job with the Flying Tingers in California, He later worked for the Southport Engineering Co, part of Koppers, and eventually retired in 1984
and opened his own business "Ervinair" offering flight instruction, instrument ratings, FAA inspections and mechanical services at Brackett Airfield in San Dimas.
He flew a Cessna 182 into his 70's.flying airplanes a total of sixty years. He was married for sixty two years and raised four children..
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K&E 4088-3 Polyphase Duplex 1961
ISRM 19.05.04.03
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K&E 4088-3 Polyphase Duplex sn612818
Made in U.S.A. 1936-1939
Front Scale:
K, A [ B, S, T, CI ] D, L
Back Scale:
DF [ CF, CIF, C ] D
Gifted by Terry Whitsel of Loveland, Colorado
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K&E 4090 Prototype
REF |
K&E 4090 Prototype - 1890
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: A [ B, C ] D [ C, S ]
Back Scale: A [ BI, CI ] D [ CI, L, T ] D
Archive - Herman van Herwijnen SRC
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K&E 4090 Universal EdgeCursor Lot79
REF |
K&E 4090 Universal EdgeCursor Lot79 - c1891 Patent
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: A [ B, C ] D [ C, S ]
Back Scale: A [ BI, CI ] D [ CI, L, T ] D
Archive - Case Antiques Photo
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K&E 4090 Universal Clamshell Cursor
REF |
K&E 4090 Universal Clamshell Cursor - c1899
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: A [ B, C ] D [ C, S ]
Back Scale: A [ BI, CI ] D [ CI, L, T ] D
Archive - Herman van Herwijnen SRC
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K&E 4090 Universal (attached slides)
REF |
K&E 4090 Universal- 1901/1903
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale: A [ B, C ] D [ C, S ]
Back Scale: A [ BI, CI ] D [ CI, L, T ] D
Archive - Herman van Herwijnen SRC
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K&E 4090-3 Log Log Duplex Trig 1936
ISRM 22.08.27.02
1943 and 1944 USNA Yearbook photos
USS Boston CA-69 (c1969), R.W. King 2014 (age 90) w/ Ian Ross, author of Such Is Life In The Navy
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K&E 4090-3 Log Log Duplex Trig 1934 sn468224
Made in U.S.A. - has 1936 Improved Metal Cursor
Note: Divided in degrees and minutes (Nautical). 1934 scale set w/CI scale.
Front Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back Scale:
LL0, A [ B, K, CI ] T Cot , S2 Cos2, S1 Cos1
Original owner: Belonged to Radm.Randolph Winchester King (1923-2017).
Gifted by Tove King of Carlsbad, California.
RADM Randolph Winchester King (1923-2017).
Randy was born in Wilmington, Delaware son of the late Captain Thomas Starr King, U.S. Navy (Ret), and Mrs. Anne Gordon
(Winchester) King. He attended Annapolis and Coronado High Schools and after a year at Stanford University, he entered the United States
Naval Academy in July 1940. He graduated and was commissioned Ensign on June 9, 1943, and married hisMargaret Blackburn Corn, the day after.
He received the degree of Naval Engineer from
Massachusetts Institute of Technology in June 1949, and advanced to the rank of Rear Admiral on October 1, 1972. Randy served during
World War II in the Pacific on U.S.S. Eaton (DD-510) and U.S.S. Boston (CA-69). He spent the rest of his career as an Engineering Duty
Officer serving at Mare Island and Pearl Harbor Naval Shipyards, in Fleet maintenance jobs, at the Bureau of Ships, the Naval Radiological
Defense Lab, San Francisco Naval Shipyard, as Head of the Engineering Department at the Naval Academy, Commander Naval Ship Research and
Development Center, and Commander of Norfolk Naval Shipyard and Supervisor of Shipbuilding, Conversion and Repair. His last duty station
was as Deputy Commander, Research and Technology at Naval Sea Systems Command. His awards include the Meritorious Service Medal and the
Legion of Merit. After retiring from the Navy in 1975, Randy served as Executive Director of the Maritime Transportation Safety Board,
and as Executive Officer of the National Academy of Engineering.
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K&E 4090-3 Log Log Duplex Trig 1936
ISRM 14.10.15.02
|
K&E 4090-3 Log Log Duplex Trig 1936 sn492569
Made in U.S.A. - 1936 Improved Metal Cursor with Magnifier
Note: Divided in degrees and minutes. 1934 scale set with CI scale.
Front Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back Scale:
LL0, A [ B, K, CI ] T Cot , S2 Cos2, S1 Cos1
Original owner: (Name written on case): Victor H. Hodge. "Vic", C.J.C. "34" on flap.
Read Mendell Penco Weinbach and the K&E Log Log Vector Slide Rules By William K. Robinson on the development of the Vector slide rule.
Note the serial number "477983" shown in the slide rule image of the 1936 catalog. It occurs prior to the serial number "492569" of this specimen, so helps establish the date.Courtesy of McCoy's K&E Catalogs
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K&E 4090-3 Log Log Duplex Trig 1936
ISRM 12.10.07.01 |
K&E 4090-3 Log Log Duplex Trig 1936 sn502283
Made in U.S.A. - Improved Cursor (suffering from KERCS)
Front Scale:
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back Scale:
LL0, A [ B, K, CI ] T Cot , S2 Cos2, S1 Cos1
Note: The CI scale and Improved Metal Framed cursor was introduced on this model in 1936
Original owner: (Name written on case, Initials on stock): Henry S. Craumer (1917-2006) of New Jersey.
He was a member of the faculty of Polytechnic University in Brooklyn,
New York. Mr. Craumer retired to Raleigh, North Carolina where he died in 2006.
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KE 4091-3 Log Log Duplex Decitrig sn455651 1934
ISRM 22.10.13.13 |
KE 4091-3 Log Log Duplex Decitrig sn455651 1934
Made in U.S.A. by Keuffel & Esser Co., New York
Note: Has 1933 scale set,with a Reinforced frameless glass cursors.
Front Scale:
LL0, A [ B, K, CI
] T, S2, S1
Back Scale:
L, LL1, DF [ CF, CIF, C ] D, LL3, LL2
Gifted by Leslie Dormamen.of Wheaton, Illinois.
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KE 4091-3 Log Log Duplex Decitrig sn460643 1934
ISRM 13.04.23.01 |
KE 4091-3 Log Log Duplex Decitrig sn460643 1934
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
LL0, A [ B, K, CI
] T, S2, S1
Back Scale:
L, LL1, DF [ CF, CIF , C ] D, LL3, LL2
Note: Has 1933 scale set, but a 1936 Improved metal framed cursor.
In 1933-1935 the catalogs show the 4091-3 as having a Reinforced frameless glass cursors.
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K&E 4091-3 Log Log Duplex Decitrig 1934
REF S011 |
K&E 4091-3 Log Log Duplex Decitrig sn487456 1934
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
LL0, A [ B, K, CI ] T, S2, S1
Back Scale:
L, LL1, DF [ CF, CIF, CI , C ] D, LL3, LL2
Note: Has 1934 scale set, but a 1936 Improved metal framed cursor.
In 1933-1935 the catalogs show the 4091-3 as having a Reinforced frameless glass cursors.
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K&E 4092 Log Log Duplex ClamShell Cursor (1909)
ISRM 24.07.04.13.X |
K&E 4092 Log Log Duplex ClamShell Cursor (1909)
Made in U.S.A. Clamshell style metal framed glass indicator with 'U' shaped brackets
Patents: June 5, 1900, Dec 22, 1908
Front Scale:
A [ B, S, C ] D
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Note: the CI scale's RED ink has darkened overtime and appears BLACK.
Gift of Tom Dilatush Collection
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K&E 4092 Log Log Duplex Column Cursor (1913)
ISRM 24.07.04.46.X |
K&E 4092 Log Log Duplex Column Cursor (1913)
Made in U.S.A.
Patents: June 5, 1900, Dec 22, 1908
Front Scale:
A [ B, S, C ] D
Back Scale:
LL1, LL2, LL3 [ B, T, CI ] D, L
Gift of Tom Dilatush Collection
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K&E 4092 Log Log Duplex Lot 16 (1915)
ISRM 22.05.22.02 |
K&E 4092 Log Log Duplex Lot 16 (1915)
Made in U.S.A. - All-Glass Cursor with steel Bars
Patents - Upper Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Front Scale:
A [ B, S, C ] D:
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Gifted by Judy F. Johnson. Franklin G. Fink collection
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K&E 4092 Log Log Duplex Lot 114 (1915)
ISRM 22.07.06.05 |
K&E 4092 Log Log Duplex Lot 114 (1915)
Made in U.S.A. - All-Glass Cursor with steel Bars.
Patents - Upper Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Front Scale:
A [ B, S, C ] D:
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Note location of "CI" scale label, and addition of "Product -1" on lower stock.
Gifted by Cindy Tate of Bozeman, Montana
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K&E 4092 Log Log Duplex Lot 3 (1915)
ISRM 15.07.20.03
Sleeve
R.W Kratz Sr. with Nick Kratz's father R.W. Kratz Jr.
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K&E 4092 Log Log Duplex Lot 3 (1915)
Made in U.S.A. - All Glass Cursor with Celluloid Bars
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Front Scale:
A [ B, S, C ] D
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Original owner: R.W. Kratz, Sr, grandfather of donor Nick Kratz.
Gift of Nick Kratz, California
Nick Kratz writes" This is [part of - see Halden Calculex] the combined surviving collection of my father, R.W. Kratz Jr,( - 2008) and father, R.W. Kratz, Sr.( - 1942)
My grandfather (Sr.) who, amongst other things, was an electrical and HVAC engineer
. My father was in International Licensing, and as i recall worked with a company in the UK (unfortunately i don't remember which company, and my father died in 2008) which licensed the Hughes-developed IC and did bring a product to market (4-function, not scientific, so not directly threatening slide rules. This would have been 1972 or thereabouts). I was 16 years old in 1975. I remember my father showing me, maybe a few years prior, how to use a slide rule. This was of course happening as the affordable scientific calculators were rolling out, bringing with them disruptive change. I never did have enough interest to learn the slide rule, with simple battery-operated greater precision at my fingertips. My loss if i survive the end of the world where there is a slide rule but no functioning calculator, though given that I'm having trouble surviving in this world as it is, I'm not particularly concerned about that. ;-) I was amongst the first engineering generation (electrical, in my case) who started out with calculators and never used slide rules."
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K&E 4092 Log Log Duplex Lot 74 With Magnifier (1915)
ISRM 13.10.07.10 |
K&E 4092 Log Log Duplex Lot 74 (1915)
Made in U.S.A. - All Glass Cursor with Celluloid Bars
Patent Dates, as written - Upper Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15. Magnifier: 6-20-11
Front Scale:
A [ B, S, C ] D
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Note that one lens was severely broken and was replaced with one fabricated from a plastic lens used on Scientific Instruments slide rules. It has a red hairline.
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KE 4092 Log Log Duplex lot86 (or 98) 1916-1921
ISRM 13.04.12.01 |
K&E 4092 Log Log Duplex lot86 (or 98) 1916-1921
Made in U.S.A. - All Glass Cursor with celluloid bars
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Front Scale:
A [ B, S, C ] D
Back Scale:
LL1, LL2, LL3 [ C, T, CI ] D, L
Note variance in scales to later models, which also had 'Made In USA' stamped on lower stock
Original owners (marked on stock and sleeve flap: Eli A. Anderson
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S068 K&E 4092-3 (1922) |
K&E 4092-3 sn5983
Made in U.S.A. - All Glass Cursor (1922) with serial number and "Made In U.S.A." stamp
Patents - Upper Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
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K&E 4092-3 (1923)
ISRM 22.05.22.07 |
K&E 4092-3 sn64718
Made in U.S.A. - All Glass cursor
Patents - Upper Stock: Pat. June 5 '00; Dec 22, '08. Cursor: Pat. 8.17.15
Note: Scale label text is in Times Roman Font as shown:
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
DF [ CF, CIF, CI, C ] D, L
Gift Of Judy Johnson of Maryland. Her father Franklin G. Fink's Collection.
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K&E 4092-3 (1924 w/ 1937 Cursor)
ISRM 11.11.11.05 |
K&E 4092-3 sn443623
Made in U.S.A. - Improved 1936 Replacement cursor with serial number and "Made In U.S.A." stamp
Patents - Lower Stock: Pat. April 1, '24; Other Pat. Pending; Cursor: 2,086,502 (July 6,1937)
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
Previous Owner(s): On sleeve: G. Higgings, Ewing.
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K&E 4092-3 (1926)
ISRM 14.01.07.01 |
K&E 4092-3 sn149442
Made in U.S.A. - All Glass cursor
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08; April 1, '24; Cursor: Pat. 8.17.15
Note: Scale label text is in Times Roman Font as shown:
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
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K&E 4092-3 Log Log Duplex
ISRM 18.07.16.01
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K&E 4092-3 Log Log Duplex sn100651 (1926)
Made in U.S.A. - All Glass cursor
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08; April 1, '24; Cursor: Pat. 8.17.15
Note: This model came with the all-glass cursor, but because of heavy use, it was replaced with the New-Improved Cursor of 1936
Note: Scale label text is in Times Roman Font as shown:
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Owned by Arnold D. Strausman, gifted by his daughter Judith B. King of Miami Shoes, Florida.
Arnold Davidson Straussman (c1908-1983) was an electrical engineer who loved the elegance of math, as well as science and the arts. After graduating from Pratt Institute, NY in 1929, he was employed by the Jersey Central Power and Light Company until 1940. Then later with Ebasco Services headquartered in NY.
His daughter, Judith King write: "He was an amazing man, and introduced me to astronomy and Scientific American as soon as I could read. He loved math in its pure forms, but also the practicalities of what you could design and build with it. We designed and built a simple radio together before I was out of grade school. " Note: He is listed in Amatuer Radio Stations of the United States June 30, 1920: Call sign: 2AUH (18 watts), located at 601 Asbury Ave, Asbury Park, NJ. Evidently Arnold was building radios while still in high school.
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S535 K&E 4092-3 (1926) |
K&E 4092-3 sn187247
Made in U.S.A. - All Glass cursor - Used 1926-1930
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08; April 1, '24; Cursor: Pat. 8.17.15
Note: Scale label text is in Times Roman Font as shown:
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Parker D. Shepperd (1909-1963) used this slide rule between 1926-1930 at the
University of Colorado in Boulder. Graduated 1930 with a
mechanical engineering degree. Case has student's address at
1221 University, Boulder, CO, a fraternity house near the
campus. Mr Shepperd worked in various firms designing commercial
HVAC systems, such as General Electric in Schenectady, NY, and
Johnson Service Company in Detroit, Cleveland, and Boston. One
of his big projects was the John Hancock Building in Boston.
Slide rule donated by his daughter, Marnie Shepperd of Arizona, and has now been
permanantly transferred, with other items, to the University of
Colorado Heritage Center.
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K&E 4092-3 LogLog Duplex (1928)
ISRM 18.07.25.01
|
K&E 4092-3 sn371243 LogLog Duplex
Made in U.S.A. - All Glass Cursor with Magnifier
Patents - Lower Stock: Pat JUNE 5, '00, DEC. 22, '08, APRIL 1, '24; Cursor: PAT 8.17.15
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Original Owner, Marked inside sleeve: W.B.Wood Jr. B-38 Dunster, Cambridge, Mass.
William Barry Wood, Jr. (1910-1971) was an American football player and medical educator. Wood played quarterback for Harvard during the 1929-1931 seasons and was one of the most prominent football players of his time. He was elected to the College Football Hall of Fame in 1980. An accomplished student as well as a gifted athlete, Wood went on to a highly successful academic career in medicine and microbiology at Washington University in St. Louis and Johns Hopkins University. Wood earned his medical degree in 1936. He was a National Research Council Fellow in bacteriology at Harvard, then returned to Hopkins in 1940 as a faculty member. In 1942, at the age of 32, he became head of the Department of Medicine at Washington University in St. Louis and physician-in-charge at Barnes Hospital. He remained in St. Louis for 13 years, then returned to Hopkins in 1955 as vice president of the university and hospital, and as a professor of microbiology. In 1959, he became director of the department of microbiology, and remained in that post until his death in 1971. The Wood Basic Science Building at Hopkins is named in his honor. Courtesy of Wikipedia See this YouTube Video Interview Great Men of Science (1971)
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K&E 4092-3 (1924)
ISRM 04.04.23.02 |
K&E 4092-3 sn256159
Made in U.S.A. - All Glass Cursor
Patents - Lower Stock: Pat. June 5 '00; Dec 22, '08; April 1, '24; Cursor: Pat. 8.17.15
Front Scale:
LL01, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Note: Retrofit one cursor glass with plastic lens from S.I.C. cursor which has a red hairline.
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K&E 4092-3S (1929)
ISRM 18.07.26.02
|
K&E 4092-3S sn282613
Made in U.S.A. - New Improved Cursor (should be all-glass cursor
Patents - Lower Stock: Pat. June 5, '00 - Dec. 22, '08 - April 1, 1924
Note: 1925-1937 scale set.
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Original Owner, Marked inside sleeve: Wiley, O.E. - K.S.A.C.
Donated by Bill Boas, Wray, CO.
William (Bill) Augustus Boas, is an independent journalist and writer. Bill grew up in the Bronx, New York and served in the U.S. Navy from 1962 to 1966, on ships with the 2nd and 6th Fleets, and under Commander, Fleet
Air Mediterranean at Naples, Italy. He worked as the Business Administrator of the American Academy of Dramatics
Arts in 1968, and a press aide for a W. Averell Harriman political cause in 1969. He has been a correspondent for The Wall Street Journal, Business Week magazine, and United Press International as well as numerous regional general interest and trade
periodicals.
For his writing, he received an Honorary Citizenship of the State of Texas from Governor Price Daniel in 1961; a
George Washington Honor Medal from the Freedom's Foundation at Valley Forge in 1964; and the 1982
Morton Margolin Prize for Distinguished Business Reporting from the Morton Margolin Trust administered by the
College of Business Administration of the University of Denver. One of his interests was collecting slide rules, .
He now lives in Wray, Colorado engaged in other writing and photography projects
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K&E 4092-3 Log Log Duplex sn405403 (1932-1933)
ISRM 22.08.27.01
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K&E 4092-3 Log Log Duplex sn405403 (1932-1933)
Made in U.S.A. - Flanged All Glass Cursor (produced from 1933-1935). Slide rule made in 1932
Note: 1925-1937 scale set.
Patents - Lower Stock: Pat. June 5.'00, Dec 22.'08, April 1,'24; Other Pat. Pending; Cursor: Pat. Aug.17.15
Front Scale:
K, DF [ CF, CIF, CI, C ] D, L
Back Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Original owner: RAdm Rudolph Winchester King (1923-2017)
Gifted by Tove King of Carlsbad, California.
See expanded bio on RAdm R.W. King on the K&E 4090-3 sn468224.
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K&E 4092-3 Log Log Duplex sn422878 (1933)
ISRM 14.01.01.01 |
K&E 4092-3 Log Log Duplex sn422878
Made in U.S.A. - Flanged All Glass Cursor (produced from 1933-1935)
Note: 1925-1937 scale set.
Patents - Lower Stock: Pat. April 1, '24; Other Pat. Pending; Cursor: Pat. 8.17.15
Front Scale:
K, DF [ CF, CIF, CI, C ] D, L
Back Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Originaal Owner: Robert J.Olson (1913-2006)
Robert J.Olson (1913-2006) was employed as a Sales Representative for West Virginia Pulp
and Paper from the 40's through the 1970's. He used this slide rule in calculations of thousands of huge rems of paper in his
dealings with printing companies. In 1969 the company was renamed Westvaco Corporation. In 2000 it was merged with Mead Corporation
(an earlier distributor of slide rules). Olson photo and biography provided by Ana E. Olson, Robert Olson's daughter-in-law
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K&E 4092-3 (1937)
ISRM 11.11.07.01 |
K&E 4092-3 sn515790 (1935)
Made in U.S.A.
Patents - Lower Stock: Pat. 1,488,686 (April 1, 1924) - 1.930,852 (Oct 17, 1933); Cursor: 2,086,502 (July 6,1937)
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Previous Owner(s): Names on sleeve: David L. Fort, Russ Hignite, Wm. Hignite
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K&E 4092-3S (1936)
ISRM 10.03.02.01 |
K&E 4092-3S sn526892
Made in U.S.A. - New Improved Cursor (older celluloid compound with KERCS)
Patents - Lower Stock: Pat. 1,488,686 (April 1, 1924) - 1.930,852 (Oct 17, 1933); Cursor: 2,086,502 (July 6,1937)
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Original Owner, Marked inside sleeve: J.Stonich Jr., Aluminum Co. of America, no 6 Michigan Ave, Chicago, Illinois
Donated by Robert C. Eaton, Boulder, CO.
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K&E 4092-3 Duplex Log Log (1937)
ISRM 23.09.30.01
|
K&E 4092-3 Duplex Log Log sn630599 1937
Made in U.S.A. - New Improved Cursor (older celluloid compound with KERCS)
Patents - Lower Stock: Pat. 1,488,686 (April 1, 1924) - 1.930,852 (Oct 17, 1933); 1956 Cursor.
Front Scale:
LL0, A [ B, S, T, C ] LL3, LL2, LL1
Back Scale:
K, DF [ CF, CIF, CI,
C ] D, L
Original Owner, Belonged To Daniel Pridham Morse, Jr.1917-1988
Gift Of Julie Morse of Westport, MA daughter of Daniel Morse.
Daniel Pridham Morse, Jr.1917-1988 was born in New York City. He joined the U.S. Navy and served on a ship in the Pacific during WWII. Returning from the war he married and had three children.He worked in the manufacturing sector and eventually started his own company making high-temperature thermocouples. He enjoyed wood carving and the outdoors.
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K&E 4093-3 Log Log Duplex Vector (1930)
13.07.03.31 |
K&E 4093-3 Log Log Duplex Vector sn322624
Made in U.S.A. - with reinforced all glass Cursor - 1916-1933
Front Scale:
L, LL0, DF [ CF, B, CI,
C ] D, LL3, LL2
Back Scale:
Sh1, Sh2, Th [ SI1, SI2,
TI TI ] D, S, T
Gift of Dan Swerdlow, Bethesda, Maryland.
This slide rule was originally manufactured in 1930 with an all-glass cursor, which was very fragile. When the new
improved metal framed cursor came out in 1936, it was replaced. Unfortunately, the first celluloid blocks suffered KERCS and 50 years later they crumbled. ISRM restored this slide rule using a Ricoh 'look-a-like' OEM cursor made in Japan in 1960. See the comparison. This cursor may be seen on SIC 153, Lafayette F686, Mocronta 150/157 and many others. It is a compatible swap for all the K&E and Dietzgen 10inch Duplex slide rules including the 20inch duplexes, like the 4081-5. You just have to decide if the Relay/Ricoh bamboo slide rule is more valuable to you than your old mahogany K&E.
|
K&E 4093-3 Log Log Duplex Vector (1936)
ISRM 14.07.02.39 |
K&E 4093-3 Log Log Duplex Vector sn520441 (1936)
Made in U.S.A. - Improved Cursor. Round Trademark
Front Scale:
L, LL0, DF [ CF, B, CI, C ] D, LL3, LL2
Back Scale:
Sh1, Sh2, Th [ SI1, SI2,
TI TI ] D, S, T
Original owner, scratched on sleeve: Bill Nisrsl
Gift of Ed Millis, Dallas Texas.
|
K&E 4093-3 Log Log Duplex Vector 1936
ISRM 13.07.03.26
1933 Insert with owner's notes on vector scale ranges
Note of interest: Read Clark McCoy's Review of Bill Robinson's article Mendell Penco Weinbach and the K&E Log Log Vector Slide Rules on the development of the 4093, which migrated to the popular designs, like the 4081, that led K&E through the 1970's.
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K&E 4093-3 Log Log Duplex Vector sn549118
Made in U.S.A. by Keuffel & Esser Co., New York
Note: New Improved Cursor replaced the all-glass cursor 1936.
Front Scale:
L, LL0, DF [ CF, B, CI, C ] D, LL3, LL2
Back Scale:
Sh1, Sh2, Th [ SI1 (5.74°-0.575°), (84.28°-89.425°),
SI2 (90°-5.74°), (455.72°-84.28°),
TI (45°-84.28°)TI (45°-5.72°)] D, S (5.72°-90°), T (5.72°-45°)
Has brown leather sleeve with missing flap
Donated by Daniel Swerdlow, Bethesda, Maryland
Note: The Sh1, Sh2 and Th scales are in Radians
|
Daniel Swerdlow is a second-generation engineer from New York City and has degrees in electrical engineering from New York University and Michigan State University. He has done telecommunications engineering for major corporations and currently lives in the Washington, DC area and works at the United States Patent and Trademark Office. Dan has gifted most of his collection to ISRM to support the museum. Many specimens may be found in the various ISRM galleries.
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K&E 4094 Merchant's Slide Rule
|
See K&E Specialty Slide Rule gallery
|
REF K&E 4095 Triangular Metal |
K&E 4095 Triangular Metal
Made in U.S.A. by Keuffel & Esser Co., New York
Scale 1:
Scale 2:
Scale 3:
Archive - Herman van Herwijnen SRC
|
K&E 4095-1 Merchant Rule
ISRM 21.11.02.01
|
See K&E Specialty Slide Rule gallery
|
K&E 4095-3 Merchant Rule
ISRM 11.11.10.02
|
See K&E Specialty Slide Rule gallery
|
K&E 4097 Ever-There
P241 |
K&E 4097 Ever-There sn11765
Made in U.S.A. - Note: metal billet cursor spacers
Front Scale:
DF [ CF, CI, C ] D
Back Scale:
5in [ blank ] 13cm
Original Owner: B. B. Haenxl (on case)
|
K&E 4097B
ISRM 22.07.06.66 |
K&E 4097B sn35481
Made in U.S.A. - note: Flat lens. metal cursor blocks. No K&E Logo
Branding marks: "Keuffel & Esser; Pat, 1,875,927; Made in USA" on bottom front face of stock
Front Scale:
DF [ CF, CI, C ] D
Back Scale:
5in [ blank ] 13cm
Gift of Cindy Tate, Bozeman, Montana. Victor B. Tate collection..
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K&E 4097B
ISRM 14.01.10.05 |
K&E 4097B sn92902
Made in U.S.A. - note: Improved framed cursor. celluloid cursor blocks. No K&E Logo
Branding marks: "Keuffel & Esser; Pat, 1,875,927; Made in USA" on bottom front face of stock
Front Scale:
DF [ CF, CI, C ] D
Back Scale:
5in [ blank ] 13cm
Donated by Bill Wehrend Collection, Palo Alto, California.
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K&E 4097B V2
ISRM 22.03.01.76 |
K&E 4097B sn144512 V2
Made in U.S.A. - note: Improved framed cursor. Model number on left of slide. New K&E Logo on right.
Branding marks: " Pat, 1,875,927; Keuffel & Esser; Made in USA" on back of stock
Front Scale:
DF [ CF, CI, C ] D
Back Scale:
5in [ blank ] 13cm
Donated by Bill Wehrend Collection, Palo Alto, California.
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K&E 4097C Ever-There
P112 |
K&E 4097C Ever-There sn40001
Made in U.S.A. - Note: metal billet cursor spacers
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
5in [ S, L, T ] 13cm
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K&E 4097C Ever-There (Version 2 Cursor)
ISRM 22.03.01.75 |
K&E 4097C Ever-There sn32887 (Version 2 Cursor)
Made in U.S.A. - note: Improved framed cursor.No K&E Logo
Branding marks: "Keuffel & Esser; Pat, 1,875,927; Made in USA" on top front face of stock
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
5in [ S, L, T ] 13cm
Gift Of Philip Stanley Collection
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K&E 4097C Ever-There
ISRM 21.08.07.10 |
K&E 4097C Ever-There sn133607
Made in U.S.A. - note: Improved framed cursor. Model number on left of slide. New K&E Logo on right.
Branding marks: " Pat, 1,875,927; Keuffel & Esser; Made in USA" on back of stock
Front Scale:
A [ B, CI, C ] D, K
Back Scale:
5in [ S, L, T ] 13cm
Original Owner: R.J. Kaplan (written on inside of sleeve). He also owned the 4070-3 shown earlier.
Gift Of William Lisowski Collection
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K&E 4097D Ever-There c1930
P111 |
K&E 4097D Ever-There sn 85986
Made in U.S.A. by Keuffel & Esser Co., New York. Note: early round K&E logo.
Front Scale:
A, DF [ CF, CI, C ] D, K
Back Scale:
5in [ S, B, L, T ] 13cm
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K&E 4097-D Ever-There pre1936
P222 |
K&E 4097-D Ever-There sn142116
Made in U.S.A. - new Improved cursor. Pre 1936. No logo.
Front Scale:
A, DF [ CF, CI, C ] D, K
Back Scale:
5in [ S, B, L, T ] 13cm
Original Owner: Mrs. D.W. Morris, Dayton, Ohio
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K&E 4098
ISRM 12.06.24.28 |
K&E 4098 sn27319
Made in U.S.A. - Metal cursor blocks
Patents: 1,875,927
Front Scale: A [ B, CI, C ] D, K
Back Scale: 5in [ S, L, T ] 13cm
Donated by the Huang Collection.
The collector, who prefers to remain anonymous, obtained a B.S. degree in Physics from Taiwan's National Tsing Hua University in 1971. His love for computation has encouraged him to build a collection of slide rules, HP and TI calculators, as well as abaci, many displayed at ISRM.
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K&E 4098 Ever-There
ISRM 14.07.02.96 |
K&E 4098 Ever-There sn34544
Made in U.S.A. - Metal cursor blocks
Patents: 1,875,927
Front Scale: A [ B, CI, C ] D, K
Back Scale: 5in [ S, L, T ] 13cm
Note: Stock is cracked along its length. Repaired with transparant tape.
Gift od ed Millis, Dallas, Texas..
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K&E 4098A Ever-There
ISRM 21.06.10.39 |
K&E 4098A Ever-There sn52073
Note: Red K&E, Made in USA and model number text.
Made in U.S.A. - Metal cursor blocks
Front Scale: A [ B, C ] D
Back Scale: 5in [ S, L, T ] 13cm
Original owner intials: CEJ (engraved on slide)
Gift of Bob Dehn Collection
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K&E 4098A Ever-There sn91068
ISRM 22.03.01.86 |
K&E 4098A Ever-There sn91068
Note: Black "Keuffel & Esser Co.; Made in USA" and model number text.
Made in U.S.A. - Celluloid cursor blocks
Front Scale: A [ B, C ] D
Back Scale: 5in [ S, L, T ] 13cm
Gift of Philip Stanley Collection
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K&E TimeSlide by Albert Smith
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See K&E Specialty Slide Rule gallery
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K&E 4100 Stadia Rule
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See K&E Specialty Slide Rule gallery
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K&E 4105 Webb's Stadia Rule
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See Cylindrical Slide Rule gallery
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K&E 4108 Military Slide Rule
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See K&E Specialty Slide Rule gallery
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K&E 4110 Power Trig Mannheim
ISRM 24.07.04.14.X
The stated objectives of the inventors in the patent application was to provide a simple looking slide rule with tangent and sine scales of increased range and a new arrangement of the log log scales. The C and D scales have two log cycles while the A and B scales have four log cycles. All scales are on the front of the rule. The Log Log scales are not segmented and related to the A and B scales. Having the Log Log scales unsegmented makes the rule very easy to use. With the rule being longer than standard 10 inch rules the two cycle C and D scales have the resolution of a standard 8" slide rule.description by Clark McCoy
US Patent 2.283,473 and Preface to manual.
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K&E 4110 Power Trig Mannheim 1942 sn8801308
Made in U.S.A. - 14.5-inch Long (same stock as 4096 Merchants SR)
Designed and patented in 1942 by John Tyler, Lyman M. Kells, Willis F. Kern and James R. Bland, all professors at the US Naval Academy.
Front Scale: P, F, A [ B, T, Cot,
S Cos, CI, C ] D
Gift of Tom Dilatush Collection
 Original owner (info on back of stock): "Nick J. Fotos", "1942", "AXA", "D.of M"., "Munroe Ct. "(Court), "Annapolis, MD." Also "W.M. Huey". Nicholas James Fotos (1924-1970) family was part of a Greek Community in Annapolis. Additional research revealed that Nick J. Fotos was born August 27, 1924 and had graduated from Annapolis High School in 1941. In 1942 he enlisted in the Army Air Corp. After training in Tennessee, Alabama, and Florida, Nick was sent to Foggia, Italy in 1944 and served as a tail gunner on B17 bombers. Nick Fotos returned from the war and re-matriculated at the University of Maryland to complete his degree. He majored in Physics and Minored in Mathematics and was awarded a Bachelor of Science Degree. During that time, he met Christine Contos and were married in 1949. Following the war and upon completion of his undergraduate studies at U. of Maryland, Nick became employed as an Engineer-inspector of the sub-structure of the Chesapeake Bay Bridge; later as a physicist with the United States Engineering Experiment Station; then as a vibration engineer with the Bomarc Project of the Westinghouse Air Arm Division. But he decided he wanted a career change and applied and was accepted at the University of Baltimore Law School. He opened his law practice in the late 50s and practiced law through the 1980s and had a solo practice.
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K&E 4132 Crane's Sewer Rule
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See K&E Specialty Slide Rule gallery
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K&E 4133 Roy Lance Electrical
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See K&E Specialty Slide Rule gallery
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K&E 4135 Engine Power Computing
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See K&E Specialty Slide Rule gallery
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K&E 4139 Cooke Radio Rule
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See K&E Specialty Slide Rule gallery
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K&E 4143 Kissam Stadia
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See K&E Specialty Slide Rule gallery
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K&E 4160 Chemists Rule
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See K&E Specialty Slide Rule gallery |
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K&E 4150-1 Doric sn2930 (Old 9050-1)
ISRM 14.07.02.85 |
K&E 4150-1 Doric sn2930 (Old 9050-1)
Made in U.S.A. by Keuffel & Esser Co., New York
Brand markings: "DORIC K&E CO" on right of slide. "Pat. Pend; Made in USA" on top face of stock.
Front Scale:
DF [ CF, CI, C ] D, L
Back: Blank
Gift of Ed Millis, Dallas, Texas
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K&E 4150-1 sn159793 (See 68-1648 below)
ISRM 22.03.01.77 |
K&E 4150-1 sn159793 (See 68-1648 below)
Made in U.S.A. by Keuffel & Esser Co., New York.
Brand markings: "Keuffell & Esser Co.; Made in USA": on top face of stock. K&E logo on slide.
Front Scale:
DF [ CF, CI, C ] D, L
Back: Blank
Gift of the Philip Stanley Collection, Worchester, Mass.
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K&E 4153-1 (New 68-1648) sn029897
ISRM 18.04.06.22 |
K&E 4153-1 (New 68-1648) sn029897
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, CI, C ] D, K
Back Slide: [S, L, T]
Gift of Leroy Hausler Family
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K&E 4158 K12 Prep
ISRM 15.05.11.02 |
K&E 4158 K12 Prep c1964-1975
Made in U.S.A. - New number 68-1892
Front Scale:
K, A [ B, S, CI T, C ] D, L
Back Blank
Gift of Richard Vigil, Damascus, Maryland.
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K&E 4161-1
P038 |
K&E 4161-1 sn468310
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
K, DF [ CF, L, CI, C ] D, A
Back Slide
[ T, ST, S, C]
Back: blank |
K&E 4161-3 Mannheim Type Ivorite Slide Rule
ISRM 14.01.10.41.X |
K&E 4161-3 Mannheim Type Ivorite Slide Rule sn220819
Made in U.S.A.- all plastic stock
Front Scale:
10inch // K, DF [ CF, L, CI, C ] D, A \\ 25cm
Back Slide
[ T, ST, S, C]
Back: Conversion Factors
Donated by Bill Wehrend Collection, Palo Alto, California.
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K&E 4175 Kurtz Pyschrometric Rule
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See K&E Specialty Slide Rule gallery
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K&E 4181-1 Log Log Duplex Decitrig sn003925
Made in U.S.A. - all plastic stock, all black scales
Note; Has model number. Black K&E © logo . Multiple patents listed on slide
Front Scale (B2.. Artwork)
LL01, L, K, A [ B, T, ST, S ] D, DI, LL1
Back Scale (A1.. Artwork)
LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Donated by David Hecht Collection, Alexandria, Virginia
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K&E 4181-1 Log Log Duplex Decitrig sn133465
Made in U.S.A. - all plastic stock,
Note: No model number. Red and Black Scales. Red K&E logo
Front Scale (D1::.. Artwork)
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
LL1
Back Scale (C1:::. Artwork)
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Donated by Carlee Heit in memory of her husband, Ray Heit Collection
Raymond Anthony Heit (1957-2003) earned a Civil Engineering degree from the University of Cincinnati, and was a
Registered Civil Engineer in Ohio and Texas and a Licensed Surveyor in Ohio. Raymond had a creative and
productive career at Factory Mutual, Inc., Union Carbide, Inc, and Kellog-Brown & Root, Inc. He also collected
slide rules and slide charts, which now reside in the ISRM archives.
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K&E 4181-1 Log Log Duplex Decitrig sn324460
ISRM 18.03.01.02
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K&E 4181-1 Log Log Duplex Decitrig sn324460
Made in U.S.A. - all plastic stock, Red and Black Scales
Front Scale (D2. Artwork):
LL01, L, K, A [ B, T Cot,
ST, S Cos ] D, DI,
LL1
Back Scale (C2. Artwork):
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Donated by Robert Edmonds of Broomfield, Colorado in memory of his father.
Dean Keith Edmonds (1924-2011) was born in Loveland, Colorado. and raised in multiple communities around the state. Dean worked on the road crew for the National Park Service and for several years as an auto mechanic before putting himself through school by owning and operating his own sheet metal business. He earned his Bachelors (1960 Mechanical Engineering) and Masters (1966 Chemical Engineering) Degrees from the University of Colorado and became a Certified Professional Engineer. He worked as a Civil Engineer at the National Bureau of Standards in Boulder and later for the Department of Defense at Fort Carson in Colorado Springs, Wiesbaden Army Base (West Germany), Fort Dix (New Jersey) and Fort Belvoir (Virginia). He used this slide rule and his Post Versalog in his career. He loved to tinker with his 1972 MGB and wrote a two volume book Adam's Holy Mountain and the Four Rivers of Eden 1998 by Dean K. Edmonds, available on Amazon.
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K&E 4181-3 Log Log Duplex Decitrig
ISRM 15.05.11.03 |
K&E 4181-3 Log Log Duplex Decitrig sn024987
Note: Image from sn 004408
Made in U.S.A. - all plastic (trade name 'Ivorite') stock, plastic cursor lens.
Patents on slide: US 2,168,056;2,170,144;2,285,722
Front Scale (Artwork C:):>
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
LL1
Back Scale (Artwork A:::.):
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Note: Green leather sleeve, no markings in Retail box
Gift of Richard Vigil, Damascus, Maryland
 Box end
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K&E 4181-3 Log Log Duplex Decitrig
ISRM 23.08.02.01
Robert Churchill Cowen (1927-2022). Bob, was born in New Hampshire, grew up in Boston, and spent most of his adult life in Concord, MA, with short stints in California and England. He graduated from the Massachusetts Institute of Technology in 1949, where he earned a Bachelor of Science Degree in Meteorology and a Master of Science Degree in General Science. Continued on right
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K&E 4181-3 Log Log Duplex Decitrig sn407483
Made in U.S.A. - all plastic (trade name 'Ivorite') stock, plastic cursor lens.
Patents on slide: US 2,168,056;2,170,144;2,285,722
Front Scale (Artwork C:):
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
LL1
Back Scale (Artwork A:::.):
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original owner: Robert Churchill Cowan 1927-2022 of Concord, MA
Gift of Debbie Slade Pierce, whos father was a friend of Robert Cowan.
Cont'd He had planned to get his PhD from MIT, but was offered a job as science writer for The Christian Science Monitor, and in deciding to become a journalist, he was one of the first full-time science writers in the country. He wrote for over 50 years. He specialized in stories about the universe and space exploration, and he mentored generations of writers in the science field. Although he retired in 1995, he continued to contribute to the paper until 2010. During his tenure, Cowen earned many awards, including the Stack-Grady medal given by the American Chemical Society for sustained achievement in science communication to the public. He also won an award that is now named after him, the AGU 2001 Robert C. Cowen Award for Sustained Achievement in Science Journalism from American Geophysical Union, of which he was a lifetime member. He was also a member of the Sigma Xi Honor Society - an international honor society for science and engineering, a contributor to MIT's Technology Review and an active supporter of natural science students at MIT.
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K&E 68-1100 Decilon 10 (Version 1)
ISRM 17.08.24.06
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K&E 68-1100 Deci-Lon 10 (Version 1)
Made in U.S.A. - sn263644 - no model number, ridges on slide or braces
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Gift Of Nancy Morris of Tempe, Arizona. Dustin E. Morris Collection
Dustin E. Morris (1939-2017) Dustin, shown in this photo, holdin his father's slide rule next to a Navy ship model. His father was a Naval engineer, so he started out young using a slide rule. He enlisted in the Coast Guard after high school where he started his career in electronics. Dusty worked for Motorola in the Phoenix area for 33 years. He went to ASU in the evenings until he earned his engineering degree. Dusty was a ham radio operator W7ITM who enjoyed building his own equipment. He was an active member of the Motorola Amateur Radio Club of Arizona (MARCA) He presented "Home Brew SWR Bridge" during his last year at age 78. Of the mmany slide rules donated to ISRM, by his wife, Nancy, this is one he used quite often in his Amatuer radio hobby. You can see other slide rules from his personal collection in the ISRM galleries.
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K&E 68-1100 Decilon 10 with Magnifier
ISRM 22.07.06.51
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K&E 68-1100 Deci-Lon 10 with clip-on Magnifier
Made in U.S.A. - sn032078 (1967)
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Original owner (and collector) Victor B. Tate II (1932? - 2021), a Montana Rancher/Engineer/Pilot.
Gifted by wife, Cindy Tate of Bozeman, Montana
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K&E 68-1100 Decilon 10 sn192556
ISRM 24.08.01.01
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K&E 68-1100 Deci-Lon 10
Made in U.S.A. - sn192556 (1970)
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Original owner: Tom Dilatush (name written inside flap)
Gifted by Debra Dilatush of Paradise, Utah. In memory of husband.
Tom Dilatush (1952-2024) Previously of San Diego, CA. Paradise, Utah. After graduating high school and attending college at Clemson University, Tom joined the US Navy in 1972 and
served on the USS Long Beach, the first nuclear ship, until 1977. Practicing software engineer ex-executive. Tom was an active member of the Oughtred
Society. Since 2006, he contributed scans of slide rules to ISRM to help fill the galleries. Tom
enjoyed collecting computing devices and documenting them on his
website hosted by ISRM.
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K&E 68-1100 Decilon 10
ISRM 13.09.03.01
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K&E 68-1100 Deci-Lon 10
Made in U.S.A. - sn318318 (1972)
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Donated By Richard Plastino, Lakewood, Colorado.
Richard Plastino originally used a Post slide rule for his engineering education at the University of Idaho from 1963 to 1967. The Post slide rule came to an unfortunate end after Richard received a grade of "20" on a statics exam and used the slide rule to strike a traffic sign a short distance outside the engineering building. This K&E was the replacement and both it and Richard made it the rest of the way through school with no smashing events. Dick retired in 2008 after serving as Public CWorks Director for the City of Lakewood, Colorado for 28 years.
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K&E 68-1100 Decilon 10
REF - not in collection.
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Note: Models like this one was issued to U.S. Air Force Academy
Cadets in Colorado Springs, CO. from 1966-1967. They started with Post Versalogs in 1958 and then went back to them in 1968.
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K&E 68-1100 Deci-Lon 10
Made in U.S.A. - SN 225540 (1971)
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Donated by Jeff Ilseman, Longmont, CO,
Jeff Ilseman was issued this slide rule in 1971 at the
U.S. Military Academy at West Point. Jeff graduated
with the class of '75, motto Courage and Drive,
and has worked a Program Manager in the computer mass storage industry. Jeff is a generous supporter of ISRM with additional donations of
'Slide Rule Calculator's which he acquired while working at Texas Instruments, which can be seen in the Calculator Gallery
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REF K&E 68-1100 Decilon 10 Late Variant |
K&E 68-1100 Deci-Lon 10 Late Variant
Made in U.S.A. - sn206132 (1972 and later)
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Archive - Ron Knapp Collection
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K&E 68-1130 Decilon 5
ISRM 13.02.20.05.X
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K&E 68-1130 Deci-Lon 5 sn043773 c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
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K&E 68-1130 Decilon 5
ISRM 17.12.17.06.X
This was one of James J. Pennell's personal slide rules used in his career. His family writes: "Our father used and collected slide rules consistently throughout his life acquiring them from friends and at yard sales. It is an honor to donate his collection to the International Slide Rule Museum." Look for more specimens of his collection in the other ISRM galleries.
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K&E 68-1130 Deci-Lon 5 sn012785 c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York
Note: serrated grips on slide colored red and black
Front Scale:
Ln-3, Ln-2, Ln-1,
Ln-0, A [ B, T Cot,
SRT, S Cos, C ] D, DI,
K
Back Scale:
Sq1, Sq2, DF [ CF, CIF, L, CI,
C ] D, Ln0, Ln1, Ln2, Ln3
Original owner: James J. Pennell. Gifted by his daughter, Brenda Barnes, and son, Barry Pennell
of Apex, North Carolina.
Jim was born in Wilkes County North Carolina, on June 9, 1927. His parents were Charles and Maggie Ellis Pennell,
and he was the youngest of three sons. He was drafted twice serving in the Navy for eleven months during WWII and
in the Air Force during the Korean War. While in the Air Force he was stationed in Japan for two years and
developed a deep appreciation of that country and its culture.
After leaving the military he went to work for the Federal Aviation Administration as an electronics technician
caring for the navigation aids at Raleigh-Durham Airport for 25 years. He was a long-time committed member of
Greenwood Forest Baptist Church where he proudly served on the properties committee for many years. He was an
avid bowler and enjoyed golf and working on the home in Cary he lived in for 55 years.
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K&E 68-1210 Log Log Duplex Decitrig
ISRM 14.10.09.08
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K&E 68-1210 Log Log Duplex Decitrig sn930120 c1962-1975
Made in U.S.A.- Note like the early 4081-3 but re-labeled model#
Front Scale:
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
L1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gift of Edward T. Wright of Odenton, Maryland.
Edward Wright (on left) received his B.A. with Honors in Mathematics from Rhodes College (formerly Southwestern at Memphis) in 1968, followed by his
Ph.D. in Mathematics from the University of Notre Dame in 1973. Ed's thesis was on compact Kahler manifolds that admit Killing vector fields.
After graduate school Dr. Wright was a visiting assistant professor at Notre Dame for one school year,then worked as an (applied) mathematician for the Department of Defense for 39 years. Ed retired 2014. Ed writes: "The only time I ever used a slide rule was in high school physics (1963/64). I started collecting them off of Ebay in the 2004/5 time period. I continue to marvel at how much was accomplished with these instruments. I am in the process of down sizing the modest collection that I have, and wanted them to go some place that will preserve this part of the technology."
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K&E 68-1210 Log Log Duplex Decitrig in Box
REF
Included orange leather sleeve, belt clip, Jetlog and Decitrig hardcover Manual |
K&E 68-1215 Log Log Duplex Decitrig in Box
REF
The only difference between the two products is that the 68-215 did not come with a belt clip.
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K&E 68-1251 Log Log Duplex Decitrig
ISRM 17.08.24.07 |
K&E 68-1251 Log Log Duplex Decitrig sn132850 c1962-1975
Made in U.S.A. - Note like the early 4081-3 and later 68-1210;
but all-plastic with a thinner stock.
Front Scale:
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
L1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gift of Nancy Morris of Tempe, Arizona. Dustin E. Morris Collection.
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K&E 68-1261 Jetlog Jr. Log Log Duplex Decitrig
ISRM 22.09.13.29.X
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K&E 68-1261 Jetlog Jr. Log Log Duplex Decitrig sn137788 c1969
Made in U.S.A.- Note: No model number on stock. like the early 4181-1
Front Scale:
LL01, L, K, A [ B, T Cot,
SRT, S Cos ] D, DI,
L1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Gift of JoAnn Lynn of Washington, D.C. Joel L. Lynn Collection
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K&E 68-1318 Log Log Duplex Trig (1962-1970)
ISRM 11.11.22.04 |
K&E 68-1318 Log Log Duplex Trig sn360416
Made in U.S.A. - Note like the early 4080-3 with degree in minutes and seconds
Patents on lower stock: US 2,168,056;2,170,144;2,422,649;2,500,460;2,285,722
Front Scale:
LL01, L, K, A [ B, T Cot,
ST, S Cos ] D, DI,
L1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Note: Tan leather sleeve with belt clip, no markings
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K&E 68-1400 Analon 68-1400 Science Analysis
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See K&E Specialty Slide Rule gallery
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K&E 68-1434 Log Log Duplex Vector
ISRM 09.01.12.52 |
K&E 68-1434 sn131170
Made in U.S.A. 1962-1975
Front Scale: Note: 5,10, 20 div/deg
Sh1, Sh2, Th, A [ B, T Cot, ST, S Cos
] D, DI, LL01,
LL1
Back Scale:
LL02, LL03,
DF [ CF, CIF, CI,
C ] D, LL3, LL2
Original Owner: D.W. Millham
Donated by David Hecht, New York
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K&E 68-1497
ISRM 14.01.10.40 |
K&E 68-1497 Doric sn920128 - c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
K, A [ B, T Cot, SRT, S Cos
] D, DI
Back Scale:
DF [ CF, CIF, CI,
C ] D, L
Donated by Bill Wehrend Collection, Palo Alto, California.
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K&E 68-1555 Doric (Old 4168)
ISRM 18.07.23.01
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K&E 68-1555 Doric sn046449 - c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York. Made on Ivorite Plastic.
Front Scale:
K, A [ B, ST, S ] D, T
Back Scale:
DF [ CF, CI, C ] D, L
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K&E 68-1555 Doric - Celanese Celcon
ISRM 24.07.04.38 |
K&E 68-1555 Doric- Celanese Celcon sn006455 (Image is sn007039)
Made in U.S.A.- Green Celcon Plastic produced especially for Celanese Corporation in the
period 1962-1971. This was the only time K&E manufactured a slide rule that was not white.
Front Scale:
K, A [ B, ST, S ] D, T
Back Scale:
DF [ CF, CI, C ] D, L
Tom Dilatush Collection
According to Alfred E. Brown, the corporate research director at Celanese Corporation before he retired in December 1981, The Celcon rule is the first use of Celcon thermoplastic resin in a slide rule. This durable material, trademarked Celcon, was an American invention made in the laboratories of the Celanese Corporation. The 1962 Keuffel & Esser Catalog lists a 5" slide rule with model number 68-1555 made of Ivorite.
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K&E 68-1565 GP12 (1967)
ISRM 22.03.01.46.X
Replace 09.01.12.53 |
K&E 68-1565 GP12- Simplex sn002937 1967
Made in U.S.A. - ©1964. Ivorite stock. Synthetic sleeve.
Front Scale:
Sq1, Sq2, DF [ CF, T Cot, SRT, S Cos,
, CI, C ] D, A, K
Back Scale:
cm (number) [ number, Conversions, logarithm ] inch (logarithm)
Note (per Clark McCoy): The GP-12 was intended for routine mathematics and targeted toward the business man and business student.
The scale set seems to be a single sided Deci-Lon without log log scales.
Gifts by David Hecht, VA., Philip E. Stanley, MA. Catalog by Clark McCoy, CA
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K&E 68-1581 Jet-Math Modern Polyphase 1968
ISRM 22.09.13.30
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K&E 68-1581 Jet-Math Modern Polyphase sn030576 1968
Made in U.S.A.- Note: Model number on stock is 4161-1. ©1973 manual.
Note: All plastic stock, all black scales
Note; Has model number. Black K&E © logo.
Front Scale:
LL01, L, K, A [ B, T, ST, S ] D, DI, LL1
Back Scale (C2.. Artwork)
LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2
Gift of JoAnn Lynn of Washington, D.C. Joel L. Lynn Collection
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K&E 68-1617
ISRM 12.02.19.03 |
K&E 68-1617 sn750904 c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
10inch // A [ B, CI, C ] D, K \\ 25cm
Back Scale: [ T, L, S]
Back: Conversion Factors
Donated by Nancy Day, Kansas City, Missouri
William Bruce Day
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Bruce was given this slide rule when he was in high school while his father, William M. Day, was stationed
at Vandenburg AFB. It was given to him by an engineer working on the early phases of the Atlas Missile Project
for Martin Marrieta. Bruce later became a career military officer who flew B-52 missions in Vietnam and later C130s
as a member of the reserves, retiring as a Lt. Col. His civilian life was spent as a Patent and Trademark Attorny
in Kansas City, where he still resides.
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K&E 68-1648 (Old 4153-1) sn029897
ISRM 18.04.06.22 |
K&E 68-1648 on box (4153-1 on slide) sn029897
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
A [ B, CI, C ] D, K
Back Slide: [S, L, T]
Gift of Leroy Hausler Family
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S504 K&E 68-1775 |
K&E 68-1775 sn860393 c1962-1975
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
10inch // DF [ CF, CI, C ] D \\ 25cm
Back Slide: Blank
Back: Conversion Factors |
K&E 68-1892 K12 Prep
ISRM 12.05.04.01 |
K&E 68-1892 K12 Prep c1964-1975 (Old 4158)
Made in U.S.A. - same as 4158
Front Scale:
K, A [ B, S, CI T, C ] D, L
Back Blank
Note: Had a price written on Manual of $3.10
Donated By Scott Reynolds, (Vintage Calculators, Inc), Helmut, California
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K&E 68-1892 K12 Prep Desk Stand
ISRM 12.05.04.01 |
K&E 68-1892 K12 Prep c1964-1975 Desk Stand
Made in U.S.A.
Note: Can be manipulated with only one hand by disabled users.
Note: Slide Rule is glued to stand.
Front Scale:
K, A [ B, S, CI T, C ] D, L
Back Blank
Original Owner: Mark Wolf (written on box).
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K&E 9061-1 Doric Pocket Duplex - c1949-1952 sn5761
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale:
K, DF [ CF, L, CI, C ] D, A
Back Slide: [ T, Cot, ST, S, Cos, C ]
Original owner: George W. Ulrich (1938 - 2015)
Gift of Marylyn (Stobbs) Ulrich, O'Fallon, Missouri
George was one of the first to attend Marquette High School and Alton High School simultaneously. He took his skills in design and construction to McDonnell Aircraft's spacecraft and defense programs while attending Washington University night school. He retired from Boeing in 2003. During those years he served in the Army.
In 1964, he married Alton resident Marilyn Stobbs and moved to Florissant, Mo., but retained his Knights of Columbus #460 membership.
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Stephen Joseph Rosty (1921-2012).was born in Passaic, NJ to Stephen and Rose (Mikulski) Rosty. During WWII Stephen served in the US Navy aboard the USS Martin. In 1955 Stephen married Frances M. Wozniak, they were married for 56 years until her death on Oct 31, 2011. Stephen received his Masters Degree in Electrical Engineering from the Newark College of Engineering, Newark, NJ. He worked for Burroughs and Bendix Aviation Co., and then Singer-Kearfott Corp, Little Falls, NJ. He had two daughters, Rosanne Rosty and Roberta Rosty.
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K&E 9068 Doric Pocket Duplex sn6027 1949-1951
Made in U.S.A. by Keuffel & Esser Co., New York
Patent shown on cursor block:2.086,502; On Stock: Pat. Pend.
Front Scale:
K, A [ B, ST, S ] D, T
Back Scale:
DF [ CF, CI, C ] D, L
Original owner: Stephen Joseph Rosty of Saddle Brook, New Jersey
Gift of Roberta Rosty, Saddle Brook, New Jersey
This slide rule, and another in the Frederick Post Gallery, belonged to Roberta's Father, Stephen Joseph Rosty (see biography on left).
Roberta also worked in a technical field as she has 2 Patents: number 4,410,393 issued October 18, 1983Preparation of steel surfaces for adhesive bonding by etching with H.sub.3 PO.sub.4 -polyhydric alcohol mixture 4,835,016 Mar 28, 1988 Adhesive bonding. Both for The United States of America as represented by the Secretary of the Army.
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K&E 9068 Doric Pocket Duplex sn177885 1949-1951
Made in U.S.A. by Keuffel & Esser Co., New York
Patent shown On Stock: Pat. Pend. No printing on cursor blocks.
Front Scale:
K, A [ B, ST, S ] D, T
Back Scale:
DF [ CF, CI, C ] D, L
Gift of Cindy Tate, Bozeman, Montana. Victor B. Tate Collection.
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K&E N9081-3 Doric Log Log Decitrig
ISRM 21.06.10.09 |
K&E N9081-3 Doric Log Log Decitrig sn65395
Made in U.S.A. by Keuffel & Esser Co., New York
Note: All Labels are Italics. Inverse scales (normally red) lean left, all other lean right.
Front Scale:
LL01, K, A [ B, T Cot, ST, S Cos ] D, L, LL1
Back Scale:
LL02, LL03, DF [ CF, CIF, CI, C ] D, LLL3, LL2
Note: Original owner: Robert W. Kingston. Marked on handmade leather sleeve
Bob Dehn Collection gifted by wife Fran Dehn of Menlo Park, California.
Bob began collecting with his first slide rule while studying at University California Berkeley. During his career as an organic chemist he continued to collect from colleagues, antique shows and swaps.
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REF K&E N9081-3 Doric
Case with Astronaut Cooper's name
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K&E N9081-3 Doric sn11767 - Duplex
Made in U.S.A. by Keuffel & Esser Co., New York
Front Scale (Not Shown)
LL01, K, A [ B, T Cot, ST, S Cos ] D, L, LL1
Back Scale (Shown)
LL02, LL03, DF [ CF, CI, C ] D, LLL3, LL2
This slide rule was owned by American Astronaut Gordon Cooper who purchased this in 1949 to
use in flight school, then continued to use it during his Air Force and NASA career.
Leroy Gordon Cooper, Jr. (1927-2004), also known as Gordon Cooper, was an
American aeronautical engineer, test pilot and one of the seven original astronauts in Project
Mercury, the first manned space program of the United States. Cooper piloted the longest and
final Mercury spaceflight in 1963. The B&W NASA photo is from May 16, 1963, just after the
successful recovery of the Mercury Faith-7 mission. He was the first American to sleep in space
during that 34-hour mission and was the last American to be launched alone to conduct an
entirely solo orbital mission. In 1965, Cooper flew as command pilot of Gemini 5.
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K&E ECCO 10000 Pocket Duplex
ISRM 14.07.02.83
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K&E ECCO 10000 Pocket Duplex (same as K&E 9068 Doric)
Made in U.S.A. by Keuffel & Esser Co., New York. Pat. Pend.on stock.
Note: Original Cursor was breaking apart. Used one from model 9068
Front Scale:
K, A [ B, ST, S ] D, T
Back Scale:
DF [ CF, CI, C ] D, L
Gift of Ed Millis Collection, Dallas, Texas.
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K&E ECCO 10002 Duplex
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Expanded News Article in the Binghamton press January 21, 1913, concerning James J. Graf, Sr (5.72MB)
Cursor Back
S396 Reference for cursor
Expanded Biography hand-written by Stephen Kozerowitz
Box end
Full description
