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US Patent: 254,460
Pipe Wrench
Patentee:
Matthew Thos. Chapman - Aurora, IL

USPTO Classifications:
81/70

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Albert H. Adams
B. A. Price
E. A. West
O. W. Bond

Patent Dates:
Applied: Dec. 08, 1880
Granted: Mar. 07, 1882

Patent Pictures:
Matthew Thos. Chapman patent March 7, 1882
USPTO pdf tiff
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Description:
This chain wrench has two chains; one on each side. They can be wrapped around a pipe in parallel, or used in conjunction with leather or soft metal pads to prevent marring pipe. The specifications disclaim any features covered by E. H. Robbins' May 2, 1871 patent (no. 114,348).

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