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US Patent: 85,276
Improvement in Wrenches
Patentee:
John Burt - Fall River, MA

USPTO Classifications:
81/180.1

Tool Categories:
wrenches : wrench components : wrench jaw components
wrenches : axle nut wrenches

Assignees:
John Burt - Fall River, MA
Willet M. Slocum - Fall River, MA

Manufacturer:
Unknown

Witnesses:
Philip S. Burt
Jonathan M. Wood

Patent Dates:
Granted: Dec. 29, 1868

Patent Pictures: [ 1 | 2 ]
John Burt Pat. Dec. 29, 1868
USPTO pdf tiff
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Description:
The patent is for a spring within a wrench jaw for the purpose of holding a nut such as a carriage axle nut.

A malleable iron "box end" carriage wrench with this spring clip, and marked with this patent date is known; the maker is not known.

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