J. T. Campbell Adding Machine

Description:

This U.S. Patent Office model for a finger-operated adding machine has four metal wheels set flat into a wooden case with a metal top (the fifth wheel is missing). Around the top edge of each wheel are ten short pins labeled clockwise from 0 to 9. Above each wheel is a round opening in the case. The edge of this opening is also labeled clockwise from 0 to 9. The mechanism linking the wheels is out of order. The patent tag is tied to the machine. It reads: 24.990 (/) J.T. Campbell (/) Adding Mch. (/) Patented August 9, (/) 1859.

John T. Campbell also took out patents for an "Improvement in Portable Fence," U.S. Patent 63,853, April 16, 1867; an “Improvement in Lifting-Tongs,” U.S. Patent 130,194, May 1, 1877; and a 'Revolving Cultivator," U.S. Patent 329137, October 27, 1885.

According to U.S. Census records and a biographical account, Campbell was born in 1833. Raised near a saw mill in Parke County, Indiana, he worked variously as a carpenter, a surveyor and engineer, and a hotelkeeper. During the Civil War, he organized an infantry regiment to fight for the Northern cause. Captain Campbell was disabled by a war wound. On his return, he obtained various local and state offices. By 1880 he had moved to Indianapolis, where he worked briefly as a clerk in the Indiana State Bureau of Statistics. He then retired to Parke County.

References:

U.S. Patent 24990, August 9, 1859.

A. T. Andreas, Atlas Map of Parke County, Indiana, Chicago, Illinois: by the author, 1874, p. 29.

Date Made: 1859

Patentee: Campbell, J. T.Maker: Campbell, J. T.

Location: Currently not on view

Place Made: United States: Indiana, RockvillePlace Patented: United States: Indiana, Rockville

Subject: Mathematics

Subject:

See more items in: Medicine and Science: Mathematics, Adding Machines, Science & Mathematics

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: 1987.0107.01Catalog Number: 1987.0107.01Accession Number: 1987.0107

Object Name: adding machineObject Type: Patent Model

Physical Description: metal (overall material)wood (overall material)paper (overall material)Measurements: overall: 3 cm x 26.2 cm x 10.5 cm; 1 3/16 in x 10 5/16 in x 4 1/8 in

Guid: http://n2t.net/ark:/65665/ng49ca746a5-0fa0-704b-e053-15f76fa0b4fa

Record Id: nmah_690697

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