Burroughs Passbook Machine #1

This full-keyboard printing electric adding machine has a steel mechanism, a carriage, a keyboard with red, black and white plastic keys, a handle, and a paper tape holder. It is the model for a machine used to enter dates and numbers into a bank passbook.
There is no outer casing. There are nine columns of round, color-coded black and white keys numbered from 1 up to 9 in each column. Right of the number keys is a column of keys for subtotal, total, number, repeat, and error. Left of the number keys is a column of red keys that indicates the type of transaction. The machine has a wide carriage (12 inches) and 11 type bars in a printing mechanism. Four type wheels which can be set to a month, day, and year. The ribbon is black.
A red paper tag attached to the object reads: PATENT DEPT. (/) #70. A metal tag attached to the object reads: B.A.M.CO. (/) MODEL (/) N0899. The machine was model #70 in the collection of the Patent Division of Burroughs Corporation.
Currently not on view
Object Name
adding machine
date made
ca 1930
Burroughs Adding Machine Company
Physical Description
plastic (overall material)
steel (overall material)
overall: 26.6 cm x 43 cm x 43 cm; 10 15/32 in x 16 15/16 in x 16 15/16 in
place made
United States: Michigan, Detroit
ID Number
accession number
catalog number
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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