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US Patent: 251,141
Machine for grinding pulleys
Patentee:
Frank Morell Simmons - Detroit, MI

USPTO Classifications:
451/142, 451/385

Tool Categories:
metalworking machines : grinding machines

Assignees:
None

Manufacturer:
Detroit Emery Wheel Co. - Detroit, MI

Witnesses:
Samuel E. Thomas
J. Edward Warren

Patent Dates:
Applied: Aug. 23, 1881
Granted: Dec. 20, 1881

Patent Pictures:
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"Vintage Machinery" entry for Detroit Emery Wheel Co.
Description:
This machine was seen in an 1887 catalog as "The Simmons' Pulley Grinder". The catalog was from the Hart Emery Wheel Co. of Hamilton, Ontario, but the machine in the drawing is labeled with the name of the Detroit Emery Wheel Co.

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