Burroughs Style P401 Adding Machine

This printing electric adding machine has a metal case painted a grayish tan and a full keyboard of plastic keys in two shades of tan. It has ten columns of keys, with keys numbered from 1 to 9 in each column. A 12” adjustable carriage is across the back, but no cover piece for the back of the carriage and no cord is present.. Adjustable sheet feeders for printing on pieces of paper are in place. The machine prints ten digits and one special character. Two additional plastic pieces were received with the machine.
The machine was model #260 in the Patent Division of Burroughs Corporation. It is marked across the front above the keyboard: Burroughs. It is marked on a metal tag attached to the bottom: 1880-B. It is marked on white paper tag: Burroughs P401 Elec. (/) #1880B (/) A. Williamson 3-3-54 (/) Developing Model (/) A. Williamson.
Currently not on view
Object Name
adding machine
date made
ca 1954
Burroughs Corporation
Physical Description
plastic (overall material)
metal (overall material)
rubber (overall material)
paper (overall material)
overall: 29.5 cm x 49 cm x 40 cm; 11 5/8 in x 19 9/32 in x 15 3/4 in
place made
United States: Michigan, Detroit
ID Number
catalog number
accession number
See more items in
Medicine and Science: Mathematics
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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