Adder or Differential Gear from the Bush Differential Analyzer
date: label: date made
content: ca 1930
label: date made
content: ca 1930
name: label: maker
content: Bush, Vannevar
notes: label: Description
content: This steel and brass component served as an adder, it connected two shafts, a and b, whose sum c = a + b was to be obtained. The adder consists of a differential gear. The gear ratio was chosen so that the sum of the revolutions of shafts a and b would equal a revolution of shaft c.
label: Description
content: Parts of Bush differential analyzer at NMAH have museum numbers MA.314824 and 1983.3002.01 through 1983.3002.89.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Cambridge
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Mechanical Integrators and Analyzers
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Wayne State University, College of Liberal Arts, Computation Laboratory
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1983.3002.02
label: nonaccession number
content: 1983.3002
label: catalog number
content: 1983.3002.02
objectType: label: Object Name
content: differential analyzer component
physicalDescription: label: Physical Description
content: steel (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 7.8 cm x 8 cm x 8 cm; 3 1/16 in x 3 5/32 in x 3 5/32 in