US Patent: 120,641 - Improvement in Pipe Wrenches


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US Patent: 120,641

Improvement in Pipe Wrenches

Patentee:

Ira S. Hamilton (exact or similar names) - Hamilton, OH

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Nov. 07, 1871

Patent Pictures:

Ira S. Hamilton Pat. Nov. 7, 1871

Description:

The shape of the adjustable jaw is designed to grip pipe, with the "claw" on the outer end serving as a limit to prevent collapsing the pipe.