US Patent: 521,312 - Wrench For Pipes, Rods, etc.


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US Patent: 521,312

Wrench For Pipes, Rods, etc.

Patentee:

Charles Hall (exact or similar names) - New York, NY

USPTO Classifications:

81/109, 81/175

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : screw adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Dec. 28, 1893
Granted:	Jun. 12, 1894

Patent Pictures:

Charles Hall Pat. June 12, 1894

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Description:

This version of Hall's wrench has the long slot in the "hook jaw," and the movable jaw is on one side of the handle rather than centered. The specifications note Hall's March 13, 1894 patent (no. 516,485).

Hall's other related patents are 523,810 (July 31, 1894), 533,295 (Jan. 29, 1895), and 586,738 (July 20, 1897).