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US Patent: 302,760
Pipe Wrench
Patentee:
Thomas Mokler - Ludington, MI

USPTO Classifications:
81/138, 81/141, 81/95

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fred. G. Dieterich
Arthur L. Morrell
Enoch W. Marsh
Hiram A. Sutherland

Patent Dates:
Applied: Apr. 03, 1884
Granted: Jul. 29, 1884

Patent Pictures:
Thomas Mokler patent July 29, 1884
USPTO pdf tiff
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Description:
The movable jaw adjusts by a cam lever and rack teeth. The gripping surface on the movable jaw is a roller. A pawl provides a ratchet action which only allows the roller to turn in one direction.

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