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US Patent: 505,869
Pipe Wrench
Patentee:
Edward Wright - Worcester, MA

USPTO Classifications:
81/171, 81/185.1, 81/356, 81/361, 81/390, 81/423, 81/427

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench handle components

Assignees:
None

Manufacturer:
Wright Wrench Co. - Worcester, MA

Witnesses:
Ella P. Blenus
Geo. M. Rice, II
Chas. H. Burleigh

Patent Dates:
Applied: Jul. 27, 1893
Granted: Oct. 03, 1893

Patent Pictures: [ 1 | 2 | 3 ]
Edward Wright patent October 3, 1893
USPTO pdf tiff
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WRIGHT PIPE AND NUT WRENCH (FLICKR)
Description:
The movable jaw has a two-part adjustment. An adjusting screw similar to a Coes-style monkey wrench provides most of the adjustment. The lever handle provides the final grip, and allows for "grab and release" action to turn pipe. The hardened pipe gripping faces are keyed into the jaws. There were also smooth face jaw inserts available. A flat spring spreads the lever handle.

Some examples marked "E. WRIGHT PAT OCT. 3 93" Other examples have only the patent date or no visible markings.

Wright's July 30, 1895 patent (no. 543,665) shows jaw enhancements and an alternate grip for smooth finish pipe.

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