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Component from the Bush Differential Analyzer

Component from the Bush Differential Analyzer

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This square brass piece has three shafts going through it. One has a brass spur gear at one end and a smaller gear at the other end. The second shaft has a steel gear at one end and a toothed sixth-circle near the brass piece. The third, shorter ,shaft has a small gear mounted on it. A mark on the spur gear reads: BOSTON (/) D1133.
Parts of the Bush differential analyzer surviving at the Smithsonian have museum numbers MA.314824 and 1983.3002.01 through 1983.3002.89.
Currently not on view
Object Name
Differential Analyzer Component
date made
ca 1930
Bush, Vannevar
place made
United States: Massachusetts, Cambridge
Physical Description
metal (overall material)
overall: 13.1 cm x 34.5 cm x 12.8 cm; 5 5/32 in x 13 19/32 in x 5 1/32 in
ID Number
catalog number
nonaccession number
Credit Line
Gift of Wayne State University, College of Liberal Arts, Computation Laboratory
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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