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US Patent: 163,642
Improvement in Pipe-Tongs
Patentee:
George D. Dean (exact or similar names) - Newark, NJ

USPTO Classifications:
30/266, 81/128, 81/406, 81/409.5

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Geo. W. Francis
Amzi J. Dean
Oliver Drake

Patent Dates:
Applied: Apr. 05, 1875
Granted: May 25, 1875

Patent Pictures: [ 1 | 2 ]
George H. Dean Pat. May 25, 1875
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Description:
Two eccentric discs with a common center and a pawl provide size adjustment for this tongs.

A patent model for this patent passed through a nationally advertised auction in the fall of 2009.

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