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US Patent: 378,299
Wrench
Patentee:
John L. Finch - Warwick, NY

USPTO Classifications:
81/57.32

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Alvah W. Edsall
Edwin S. Colwell
T. Walter Fowler
N. H. Patterson

Patent Dates:
Applied: Sep. 21, 1887
Granted: Feb. 21, 1888

Patent Pictures:
John L. Finch patent February 21, 1888
USPTO pdf tiff
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Description:
Paired clamp-jaw wrenches for well pipe, well rods, etc. The ends of the paired handles can be connected by a screw or bolt to generate the force to "start" unscrewing the joints, or finish tightening them.

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