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US Patent: 82,513
Improvement in Wrench
Patentee:
John Goodin - Centralia, IL

USPTO Classifications:
81/128

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

Assignees:
None

Manufacturer:
Unknown

Witnesses:
S. L. Hand
R. H. Scott

Patent Dates:
Applied: Jul. 18, 1868
Granted: Sep. 29, 1868

Patent Pictures: [ 1 | 2 ]
John Goodin patent Sept. 29, 1868
USPTO pdf tiff
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Description:
A cam wheel on the side of the wrench bar adjusts the moveable jaw. A small spring-loaded lever engages notches on the edge of the cam wheel to hold the adjustment. The manufactured wrench did not employ the optional tightening lever shown in the patent drawing, or incorporate any pipe gripping function.

Goodin applied a similar cam wheel adjuster to another nut wrench patented May 4, 1869 (pat. no. 89575).

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