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US Patent: 650,077
Pipe Wrench
Patentee:
William Thomas Hatten - Canyon City, OR

USPTO Classifications:
81/103, 81/152, 81/186

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. M. Smith
Edwin G. McKee
Geo. Hagny
Z. J. Martin

Patent Dates:
Applied: Feb. 05, 1900
Granted: May 22, 1900

Patent Pictures:
William T. Hatten patent May 22, 1900
USPTO pdf tiff
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Description:
Quick adjustment with the movable jaw sliding through a spring-tensioned "clutch loop." A "guide loop" acts in concert.

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