Analog Computing Component - Shock Absorber

Analog Computing Component - Shock Absorber

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This steel shock absorber was manufactured by Ford Instrument Company as “a spring relief device to prevent gearing damage due to sudden starting loads” in its analog computing instruments. It was “generally used on Intermittent Drive.”
A gear, a round disc, and a metal clamp are on a common shaft. The clamp holds a spring. A mark on the side of the clamp reads: A114. A mark on the top of it reads: 170648. A mark on the disc reads: 189262 2. A black mark on the other side of the disc reads: item 13.
A.B. Clymer, "The Mechanical Analog Computers of Hannibal Ford and William Newell," Annals of the History of Computing, 15, #2, 1993, 19-34.
Accession file.
Currently not on view
Object Name
analog computing component
date made
ca 1920-1955
Ford Instrument Company
place made
United States: New York, Queens, Long Island City
Physical Description
steel (overall material)
overall: 3.3 cm x 5.4 cm x 5.4 cm; 1 5/16 in x 2 1/8 in x 2 1/8 in
ID Number
catalog number
accession number
Credit Line
Ford Instrument Company, Division of Sperry Rand Corporation
See more items in
Medicine and Science: Mathematics
Data Source
National Museum of American History
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