Smallwood Calculator

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Description
This small stylus-operated non-printing adding machine has seven brass wheels and a steel frame painted black. Seven windows above the wheels reveal the result. The back is covered with green felt. The machine is marked on the front: -THE- (/) SMALLWOOD (/) CALCULATOR (/) OAKLAND (/) CAL. The front of the case is marked: -THE- (/) SMALLWOOD CALCULATOR (/) OAKLAND, CALIFORNIA (/) Patented Feb. 23rd 1926. The machine fits in a wooden stand, which also has a slot for the stylus. The stand has four rubber feet. The entire instrument fits in a black cardboard cover. The stylus is silver-colored metal, with a blue plastic end piece.
Compare to The Calculator (1986.0542.01).
Reference:
Russell W. Hook, “Adding Machine,” U.S. Patent 1,574,249, February 23, 1926.
Location
Currently not on view
date made
1926
place made
United States: California, Oakland
Physical Description
cardboard (overall material)
steel (overall material)
brass (overal material)
wood (overall material)
felt (overall material)
Measurements
overall: 7 cm x 33.4 cm x 9.4 cm; 2 3/4 in x 13 5/32 in x 3 11/16 in
ID Number
MA.336184
accession number
1977.0688
catalog number
336184
Credit Line
Gift of Naomi Piekarski
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

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