Stephenson's pocket adder
This early pocket adder with "automatic carry" function was
patented by Archibald Stephenson, of Manteno, Illinois, March
25, 1873 (U.S. Patent No. 137107, Improvement in Adding
Machines). The adders were made by Stephenson, in Joliet, Illinois.
This example is marked on the back, "A.M. Stephenson, Mfr, Joliet, Ill. - Agents Wanted". Only 3 1/2 inches long, the adder is constructed entirely of brass. The two sides of the case are secured with rivets. Fine working condition.
Items reserved by email will be held 10 days and shipped upon receipt of your check.
Contact: Richard Van Vleck - Email: firstname.lastname@example.org
© 2006, American Artifacts, Taneytown, Maryland.