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US Patent: 937,917
Chain Wrench.
Patentee:
Clarence E. Bonner - Chrisman, IL

USPTO Classifications:
81/70

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
C. E. Bonner Manufacturing Company - Chrisman, IL

Manufacturer:
C. E. Bonner Manufacturing Company - Chrisman, IL

Witnesses:
E. E. Miller
L. B. Woerner
M. Chambers
James Hoult

Patent Dates:
Applied: Dec. 15, 1908
Granted: Oct. 26, 1909

Patent Pictures:
Clarence E. Bonner patent October 26, 1909
USPTO pdf tiff
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BONNER *VICTOR* chain wrench (FLICKR)
Description:
The chain attaches to the body of the wrench rather than the jaw. The renewable jaws bear against a shoulder on the shank of the wrench.

The wrench was announced to the trade in the April 5, 1906 "IRON AGE" as the VICTOR REVERSIBLE CHAIN WRENCH, well in advance of the patent process.

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