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US Patent: 769,054
Chain Wrench
George William Bufford - Brooklyn, NY

USPTO Classifications:

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

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

Not known to have been produced

Mortimer J. Travis
James H. San Jule
H. S. Austin
Lawrence A. Janney

Patent Dates:
Applied: Jul. 16, 1904
Granted: Aug. 30, 1904

Patent Pictures:
George W. Bufford patent August 30, 1894
USPTO pdf tiff
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Bufford's "single jaw" design in the progression leading up to Williams' AGRIPPA pipe and fittings wrench. The major focus is the "hook" for the free end of the chain, couched in terms of deficiencies in patent nos. 499,508 and 743,058 in that aspect of the overall design.

Arthur S. Browne - patent attorney

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