US Patent: 2,221,173 - Sanding or polishing wheel


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US Patent: 2,221,173

Sanding or polishing wheel

Patentee:

Robert S. Gutsell (exact or similar names) - Phoenix, NY

USPTO Classifications:

451/506, 51/299

Tool Categories:

industrial tools : grinding wheels

woodworking machines : sanding machines : belt sanders

metalworking machines : grinders : sharpening machines : grinding wheels

Assignees:

None

Manufacturer:

Mermac Products, Inc. - Chicago, IL

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 06, 1938
Granted:	Nov. 12, 1940

Patent Pictures:

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Description:

This sander/grinder uses a single wheel and a sanding belt that is just slightly greater in diameter than that of the wheel. When the sponge-rubber wheel is turning rapidly, it expands in diameter which allows it to firmly grip the belt. This patent was subsequently improved in patent 2,377,880, and that patent number was seen on a Craftsman "Multi-Purpose Grinding Wheel" from Sears, Roebuck & Co. We believe the Craftsman product was manufactured by Mermac Products, Inc.