US Patent: 367,596 - Pipe Wrench


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US Patent: 367,596

Pipe Wrench

Patentee:

John Clark (exact or similar names) - Brooklyn, NY

USPTO Classifications:

81/68

Tool Categories:

wrenches : pipe wrenches : chain and strap wrenches

Assignees:

John Clark - Brooklyn, NY

Michael Gilmartin - Brooklyn, NY

Manufacturer:

Not known to have been produced

Witnesses:

W. C. Hauff

A. Faber du Faur, Jr.

Willam Miller

Eduard Wolff

Patent Dates:
Applied:	Apr. 21, 1887
Granted:	Aug. 02, 1887

Patent Pictures:

John Clark patent August 2, 1887

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Description:

Chain pipe wrench with the chain passing through a forked bearing surface, and onto posts on a pivoted jaw. A sliding wedge between the pivoted jaw and gripping jaw tightens the grip.