Burroughs Class I / Model 9 Adding Machine, 1908-1914

Burroughs Adding Machine Company1908/1914

The Henry Ford

The Henry Ford
Dearborn, MI, United States

Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.


  • Title: Burroughs Class I / Model 9 Adding Machine, 1908-1914
  • Creator: Burroughs Adding Machine Company
  • Date Created: 1908/1914
  • Location: United States, Michigan, Detroit
  • Subject Keywords: Accounting, Communication, Office equipment and supplies, Adding machines
  • Type: Objects
  • Contributor: The Henry Ford
  • Original Source: Digital Collections
  • Object Name: Adding machine
  • Object ID: 90.203.1
  • Manufacturer: Burroughs Adding Machine Company
  • Image ID: THF172306
  • Field: Mathematics
  • Credit: From the Collections of The Henry Ford.

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