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US Patent: 81,520
Improved Compositon for Grinding and Polishing Marble
Plane with an Abrasive Medium
Patentee:
J. C. McAfee - West Alexander, PA

USPTO Classifications:
30/478, 30/483, 451/557, 51/300

Tool Categories:
woodworking tools : planes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. C. Keruon
Chas. A. Potter
E. E. Post
A. T. Anderson

Patent Dates:
Granted: Aug. 25, 1868

Patent Pictures:
USPTO pdf tiff
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Description:
A wooden plane has a chamber for holding an abrasive compositon for polishing marble. The composition is pulverized flint and gum-shellac in equal parts.

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