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US Patent: 15,482
Wrench
Improvement in the Construction of Wrenches
Patentee:
Lorenzo D. Gilman - Troy, NY

USPTO Classifications:
81/63

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John Cantrell
A. Cruikshank

Patent Dates:
Granted: Aug. 05, 1856

Patent Pictures:
Lorenzo D. Gilman Pat. Aug. 5, 1856
USPTO pdf tiff
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Description:
Adjustable jaws mounted in the head of a ratchet wrench. The jaws are adjusted by a center screw with left- and right-hand threads.

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