US Patent: 764,619 - Pipe Wrench


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US Patent: 764,619

Pipe Wrench

Patentee:

James C. McQuilkin (exact or similar names) - Industry, PA

USPTO Classifications:

81/173

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

James C. McQuilkin - Beaver Falls, PA

Witnesses:

Patent Dates:
Applied:	Sep. 25, 1903
Granted:	Jul. 12, 1904

Patent Pictures:

James C. McQuilkin patent July 12, 1904

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Description:

The adjusting nut and movable jaw move along a threaded shaft that has pivoting attachment to the frame at the head holding the "fixed jaw." The head includes a spring which holds the movable jaw engaged with the work piece.

Known examples marked "Quick Release / Pat'd 7-12-04 / Beaver Falls, PA" have the entire handle and body formed of bent stamped sheet metal; there is a strengthening core in the handle beyond the adjustment limit of the movable jaw.