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US Patent: 529,982
Pipe-Wrench
Improvement in Jaws for Finished Pipe
Patentee:
John E. Wakefield - Worcester, MA

USPTO Classifications:
269/254R, 269/273, 269/278, 81/185.1

Tool Categories:
wrenches : wrench components : pipe jaw attachments for wrenches

Assignees:
None

Manufacturer:
John E. Wakefield - Worcester, MA

Witnesses:
Rufus B. Fowler
Emma Kester

Patent Dates:
Applied: Apr. 21, 1892
Granted: Nov. 27, 1894

Patent Pictures: [ 1 | 2 ]
John E. Wakefield Patent November 27, 1894
USPTO pdf tiff
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Description:
The patent comprises a pair of spring-loaded hinged jaws with relatively soft interior faces to act as "no-mar" pipe jaw inserts to be used with a pipe or nut wrench. A linking bar limits their motion so they won't crush pipe.

These were advertised as the WAKEFIELD WRENCH CLAMP in sizes to fit pipe 1/8" through 1".

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