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US Patent: 132,516
Improvement in Socket Wrenches
Patentees:
John T. Arnold - Warwick, RI
Wilson D. Wilcox - Warwick, RI

USPTO Classifications:
81/116

Tool Categories:
wrenches : brace wrenches
wrenches : socket wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Walter B. Vincent
Nathaniel L. Morgan
John D. W. Taylor

Patent Dates:
Granted: Oct. 29, 1872

Patent Pictures:
J.T. Arnold and W.D. Wilcox Pat. Oct. 29, 1872
USPTO pdf tiff
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Description:
The specifications describe two alternate methods of forming an adjustable square socket "bit brace wrench." The patent drawing includes a third "two-jawed" variant which is not mentioned in the specifications, and has been omitted from the image shown here.

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