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US Patent: 1,617,150
Pipe Wrench
James Perry Fisher - Ceredo, WV

USPTO Classifications:
81/179, 81/437, 81/447

Tool Categories:
wrenches : pipe wrenches



H. Woodard

Patent Dates:
Applied: Mar. 22, 1926
Granted: Feb. 08, 1927

Patent Pictures:
James Perry Fisher patent February 8, 1927
USPTO pdf tiff
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The patent describes an internal wrench component for removing pipe nipples or broken pipe ends from fittings. This component is comprised of a wedge-shaped gripping member on the back of the fixed jaw of a pipe wrench, combined with a swiveling cam-shaped toothed gripping member on the back of the movable jaw.

The production wrench citing this patent resembles the main body of the wrench shown in the drawings, but does not include the internal nipple gripping jaws that are the primary focus of the patent.

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