US Patent: 533,978 - Milling-machine


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US Patent: 533,978

Milling-machine

Patentees:

Amos Whitney (exact or similar names) - Hartford, CT

John Johnston (exact or similar names) - Hartford, CT

USPTO Classifications:

409/163, 409/215, 409/217

Tool Categories:

specialty machines : bicycle machinery

metalworking machines : milling machines

Assignees:

None

Manufacturer:

Pratt & Whitney Co. - Hartford, CT

Witnesses:

M. E. Dayton

Irvine Miller

Patent Dates:
Applied:	Jul. 12, 1894
Granted:	Feb. 12, 1895

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for Potter & Johnston Machine Co.
Vintage Machinery entry for Pratt & Whitney Co.

Description:

Co-inventor Whitney was co-founder of the Pratt & Whitney Co. This invention is a machine for making bicycle sprocket-wheels. Co-inventor Johnston was a machine designer Pratt & Whitney. In 1893 Johnston left to co-found the Potter & Johnson Machine Co.