US Patent: 2,486,947 - Surface finishing device


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US Patent: 2,486,947

Surface finishing device

Patentee:

William P. Hilger (exact or similar names) - St. Cloud, MN

USPTO Classifications:

451/488, 451/511

Tool Categories:

woodworking machines : sanding machines : floor sanders

Assignees:

None

Manufacturer:

Hilger Co. - St. Cloud, MN

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 02, 1946
Granted:	Nov. 01, 1949

Patent Pictures:

USPTO (New site tip)
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Vintage Machinery entry for Hilger Co.

Description:

Improvements to patent 2,483,904 to improve heat dissipation, by providing a felt pad between the rubber pad and the sandpaper. The felt permits some air circulation which helps reduce the temperature of the paper and also avoids the heat from friction between rubber and paper.