Burroughs Class 4 Adding Machine Section

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This model of a section of a Burroughs Class 4 adding machine has a metal mechanism with a black metal case and handle, a black wooden knob on the handle, and a dark brown wooden base. The single column of black plastic keys with has keys numbered 1 to 9. There is a white repeat key, part of a carriage, and one spool of a ribbon.The side is of metal. At the front are two black numeral dials, and on the right is a handle. The model fits on two screws in the wooden base, but is not held tightly.
This is model #242 from the Patent Division of Burroughs Corporation. The Burroughs Class 4 was introduced in 1912. A metal tag attached to the object reads: DONATED TO (/) The Smithsonian Institution (/) by (/) Burroughs Corporation.
Currently not on view
date made
ca 1912
Burroughs Adding Machine Company
place made
United States: Michigan, Detroit
Physical Description
plastic (overall material)
metal (overall material)
wood (overall material)
paper (overall material)
glass (overall material)
overall: 37 cm x 50 cm x 22 cm; 14 9/16 in x 19 11/16 in x 8 21/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Burroughs Corporation
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History


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