Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,151 pages of information and 233,681 images on early companies, their products and the people who designed and built them.

Potter and Johnston

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October 1912. Semi-automatic Turret Lathe.

of Pawtucket, Rhode Island, USA

Founded in 1898 by James Charles Potter and John Johnston (ex-Pratt & Whitney). The company became a subsidiary of the Pratt & Whitney Co.

For more information, see here[1]

See Also


Sources of Information

  1. [1] - Potter & Johnston Machine Co.