Burroughs Style P400 Adding Machine

This full keyboard electric printing adding machine has a gray metal case, a steel mechanism, and thirteen columns of white, tan, and brown plastic number keys. In addition, there is a column of five function keys to the right of the number keys and two bars for addition and subtraction to the right of this. A printing mechanism at the top has no paper tape or bar to hold a paper tape. The printing device prints numbers of up to 13 digits. The carriage for the paper tape is four inches wide. Knobs on the left and right can be used to advance it manually and there is a plastic serrated edge for tearing it. The cord is missing. The machine has four rubber feet.
The machine is marked on the front: Burroughs. It is marked on a tag attached to the bottom: AB3555. It is marked on a tag: SERIES P. A metal tag attached to the object reads: DONATED TO (/) The Smithsonian Institution (/) by (/) Burroughs Corporation. This is model #258 from the Patent Division of Burroughs Corporation.
The series P400 was introduced in 1952.
Currently not on view
Object Name
adding machine
date made
ca 1952
Burroughs Adding Machine Company
Physical Description
plastic (overall material)
metal (overall material)
rubber (overall material)
overall: 26 cm x 36.8 cm x 39 cm; 10 1/4 in x 14 1/2 in x 15 11/32 in
place made
United States: Michigan, Detroit
ID Number
catalog number
accession number
Science & Mathematics
Adding Machines
See more items in
Medicine and Science: Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Burroughs Corporation
Additional Media

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