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US Patent: 226,066
Emery-wheel
Patentee: Gilbert Hart (exact or similar names) - Detroit, MI USPTO Classifications: 451/546, 51/309 Tool Categories: industrial tools : grinding wheels metalworking machines : grinders : sharpening machines : grinding wheels Assignees: None Manufacturer: Hart Emery Wheel Co. - Hamilton, ON Canada Witnesses: James A. Rutherford James L. Norris	Patent Dates: Applied: Mar. 05, 1880 Granted: Mar. 30, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hart Emery Wheel Co.
Description: The invention consists of a grinding wheel with short lengths of metal wire admixed, which improved the strength of the wheel.

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