Drums for Frontlash Units from the Bush Differential Analyzer

Drums for Frontlash Units from the Bush Differential Analyzer

Usage conditions apply
These two flat round brass discs both have a hole down the middle for a shaft; a circle of smaller holes near the edge; and an indentation around the rim to hold a friction band (no friction band). Each has a small gear on one end. These are drums from frontlash units (compare to 1983.3002.04).
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 Components
date made
ca 1930
Bush, Vannevar
place made
United States: Massachusetts, Cambridge
Physical Description
brass (overall material)
overall: 1.5 cm x 6.4 cm x 6.4 cm; 19/32 in x 2 17/32 in x 2 17/32 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
Mechanical Integrators and Analyzers
Data Source
National Museum of American History
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