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US Patent: 366,451
Chain Wrench
Patentee:
William H. Brock - Brooklyn, NY

USPTO Classifications:
81/68

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Sedgwick
J. D. Garfield
J. L. McAuliffe

Patent Dates:
Applied: Apr. 22, 1887
Granted: Jul. 12, 1887

Patent Pictures:
William H. Brock patent July 12, 1887
USPTO pdf tiff
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Description:
The patent is for the shape of the chain in the area of the "dog," and the shape of the engaging "dog."

An aspect of the chain combined with Brock's Dec. 20, 1887 patent (no. 375,119) was used in the BROCK STANDARD chain wrench produced by the Brock Wrench Company of Brooklyn, N.Y.

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