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US Patent: 876,925
Chain Pipe Wrench
Patentee:
George Amborn - New York, NY

USPTO Classifications:
81/70

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

Assignees:
J. H. Williams & Co. - Brooklyn, NY

Manufacturer:
Not known to have been produced

Witnesses:
Eugene V. Myers
Theodore T. Snell
Fred White
René Bruine

Patent Dates:
Applied: Mar. 08, 1907
Granted: Jan. 21, 1908

Patent Pictures:
George Amborn patent January 21, 1908
USPTO pdf tiff
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Description:
Amborn received three interrelated patents on January 21, 1908 -- this patent, 876,926, and 876,927. The focus of this patent is the attachment point for the free end of the chain. The hook point on the inner faces of the jaws is deep enough to retain the chain.

Arthur C. Fraser & Co. - patent attorneys

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