Burroughs Mechanical Desk Top Calculator
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In 1886 the American Arithmometer Company was founded in St. Louis to manufacture the mechanical add-listing machine invented by William Seward Burroughs. These precision machines were very successful, and in 1904 the company moved to larger premises in Detroit. The following year the name was changed to Burroughs Adding Machine Company. Other manufacturing plants included those at Nottingham, England (1898); Strathleven, Scotland (1953); and Villiers-Ecalles, Normandy, France (1959). In 1986 Burroughs Corporation and Sperry Corporation merged to form Unisys Corporation.
Mechanical desktop calculator, direct key, Burroughs Class 6. This is a similar model to the Burroughs Class 5 adding machine in a use-worn black painted metal case. It is a hand cranked calculator of about shoe box size having 5 columns of keys and a crank lever on the right side. The results windows for each column are at the front. Made by Burroughs Adding Machine Company, United States of America during the 1930-1940 period
Our machine has the reference number A298093.
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This exhibit has a reference ID of CH28829. Please quote this reference ID in any communication with the Centre for Computing History.