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US Patent: 172,365
Pipe-Wrench
Patentees:
Eliphalet H. Adams - St. Joseph, MI
Asher F. Gates - St. Joseph, MI

USPTO Classifications:
269/254R, 81/90.9, 81/94, 81/99

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches
wrenches : pipe wrenches

Assignees:
Alexander H. Scott, Jr. - St. Joseph, MI
Eliphalet H. Adams - St. Joseph, MI
Asher F. Gates - St. Joseph, MI

Manufacturer:
Not known to have been produced

Witnesses:
Hiram Brown
C. M. Lawler

Patent Dates:
Applied: Oct. 26, 1874
Granted: Jan. 18, 1876

Patent Pictures:
Eliphalet Adams and Asher Gates Pat. January 18, 1876
USPTO pdf tiff
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Description:
A rotating head with several size toothed indentations provides the size assortment for this self-adjusting pipe wrench. The swinging hook jaw is held in contact with the work by an exterior spring.

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