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US Patent: 104,913
Pipe Wrench
Improvement In Pipe-Wrench
Patentee:
James A. Wilcox (exact or similar names) - Rocky Hill, CT

USPTO Classifications:
81/106, 81/166

Tool Categories:
wrenches : pipe wrenches

Assignees:
James A. Wilcox - Rocky Hill, CT
Walter S. Wilcox - Hartford, CT

Manufacturer:
Colt's Patent Fire-Arms Manufacturing Co. - Hartford, CT

Witnesses:
C. B. Richards
Lewis Sheldon
A. J. Tibbits
J. H. Shumway

Patent Dates:
Granted: Jun. 28, 1870

Patent Pictures: [ 1 | 2 ]
James A. Wilcox Pat. June 28, 1870
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Description:
This wrench is an improvement on Wilcox's Sept. 3, 1861 patent (no. 33,223). The bottom adjusting screw is modified, and the spring rides on a fixed rod and bears on a bolster which pushes the adjustable jaw against the work piece.

A known example has the patent information hand stamped. It looks very similar to an example marked with Wilcox's Sept. 12, 1871 patent (no. 118,891).

Ken Cope's "American Wrench Makers 1830-1930" attributes the wrench to J.A. Wilcox of Rocky Hill, CT based on the assignment. A known example is marked as "Colt."

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