William S. Gubelmann

William S. Gubelmann (1863 – September 26, 1959) was an American inventor who held about 5000 patents, invented adding machines, accounting machines and cash registers.[1] Popular Mechanics called Gubelmann “the father of all calculating machines in use today”.[2] The New York Times said that his inventions "formed the basis of the business machine industry".[1]

References
  1. New York Times:W. S. GUBELMANN, 96,1 AN INVENTOR, DIES;September 27, 1959
  2. Eris, Alfred (March 1951). Some Get Rich, Some Don't. pp. 248–250. Retrieved June 22, 2010. {{cite book}}: |work= ignored (help)


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