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Incomplete Frontlash Unit from the Bush Differential Analyzer

Incomplete Frontlash Unit from the Bush Differential Analyzer

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Usage conditions apply
This steel shaft carries a steel cylinder next to a thin rotating brass drum. A friction band goes around the drum and a planetary gear train links it to a steel disc. The disc is marked: 4. There is no endpiece.
Compare 1983.3002.04, 1983.3002.09, and 1983.3002.11.
Parts of the Bush differential analyzer at NMAH 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
steel (overall material)
brass (overall material)
overall: 6.8 cm x 28 cm x 10 cm; 2 11/16 in x 11 1/32 in x 3 15/16 in
ID Number
nonaccession number
catalog 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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