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US Patent: 421,297
Adjustable Crank Pin
Patentee:
James Mills - Cincinnati, Hamilton County, OH

USPTO Classifications:
74/571.1, 74/600

Tool Categories:
metalworking machines : metal shapers
metalworking machines : metalworking machine mechanisms : metalworking power transmission

Assignees:
Albert S. Smith - Cincinnati, Hamilton County, OH
Ellen Mills - Cincinnati, Hamilton County, OH

Manufacturer:
Smith & Mills Co. - Cincinnati, Hamilton County, OH

Witnesses:
James H. Layman
Francis M. Biddle
Harry Weruker
Francis B. James

Patent Dates:
Applied: Sep. 11, 1889
Granted: Feb. 11, 1890

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Smith & Mills Co.

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