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US Patent: 482,109
Pipe Wrench
Patentee:
William J. Walker - St. Louis, MO

USPTO Classifications:
81/103, 81/129.5

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. Jackson
D. Ind. Neudorf
C. F. Keller

Patent Dates:
Applied: Jul. 08, 1892
Granted: Sep. 06, 1892

Patent Pictures:
William J. Walker patent September 6, 1892
USPTO pdf tiff
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Description:
Rack and spur quick adjust pipe wrench jaw. Adjustment held by spring tension.

Improved by November 11, 1892 patent no. 491,255.

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