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US Patent: 483,419
Chain Wrench
Patentee:
William H. Brock - Brooklyn, NY

USPTO Classifications:
81/68

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

Assignees:
None

Manufacturer:
Brock Wrench Mfg. Co. - New York, NY

Witnesses:
C. Neveux
C. Sedgwick
J. L. McAuliffe

Patent Dates:
Applied: Mar. 19, 1892
Granted: Sep. 27, 1892

Patent Pictures: [ 1 | 2 ]
William H. Brock patent September 27, 1892
USPTO pdf tiff
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Description:
The patent covers the shape of the gripping shoe, and the spacing and location of the adjustment claws. These features are noted in advertising Brock's NEW STANDARD chain wrench. The chain shown in the drawings conforms to Brock's Sept. 24, 1889 patent (no. 411,575), and is separate from this patent.

This style of BROCK chain wrench is shown together with with the FLANGE WRENCH based on patent no. 542,922 in a 1909 ad in PLUMBER'S TRADE JOURNAL.

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