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US Patent: 201,778
Emery Wheel
Patentee:
Gilbert Hart - Detroit, MI

USPTO Classifications:
211/68, 451/541, 451/544, 451/548

Tool Categories:
metalworking machines : grinders : sharpening machines : grinding wheels

Assignees:
None

Manufacturer:
Hart Emery Wheel Co. - Detroit, MI
Hart Emery Wheel Co., Ltd. - Hamilton, ON Canada

Witnesses:
T. C. Brecht
William Beale Hale
Bradford Smith
Franklin E. Brown

Patent Dates:
Applied: Mar. 05, 1878
Granted: Mar. 26, 1878

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Hart Emery Wheel Co.
Description:
James L.Norris - patent attorney

This grinding wheel was advertised in the 1895 catalog from Charles A. Strelinger of Detroit, MI.

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