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US Patent: 340,516
Pipe Wrench
Improvement In Pipe-Tongs
Patentee:
Willard Moston - Wevertown, NY

USPTO Classifications:
81/141, 81/356, 81/361, 81/409

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John H. Siggers
H. J. Bernhard
George Tiffany
George R. Hodgson

Patent Dates:
Applied: Feb. 27, 1886
Granted: Apr. 20, 1886

Patent Pictures:
Willard Moston patent April 20, 1886
USPTO pdf tiff
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Description:
A toothed tongue attached to the handle provides the movable pivot for the size adjustment. A cam lever attached to the tongue holds that adjustment.

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