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US Patent: 57,506
Wrench
Improvement in Pipe-Tongs
Patentee:
Henry Herbert - Cincinnati, OH

USPTO Classifications:
30/94, 81/181, 81/341, 81/409

Tool Categories:
wrenches : pipe wrenches : pipe tongs
combination tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James H. Layman
George H. Knight

Patent Dates:
Granted: Aug. 28, 1866

Patent Pictures:
Henry Herbert Pat. Aug. 28, 1866
USPTO pdf tiff
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Description:
The patent is a pipe tongs with an adjustable pivot point and several replaceable / adjustable bits providing pipe cutting, threading, and gripping functions.

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