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US Patent: 65,550
Improvement in Wrenches
Patentee:
William P. Dunlap - Maquoketa, IA

USPTO Classifications:
81/124.5

Tool Categories:
wrenches : nut wrenches
wrenches : wrench components : wrench sockets

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James H. Dunlap
David H. Anderson

Patent Dates:
Granted: Jun. 11, 1867

Patent Pictures:
William P. Dunlap Pat. June 11. 1867
USPTO pdf tiff
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Description:
The patent is for a rotating socket head on an extended "T" shank. Half the sockets are "angled." The emphasis is reaching into hard to reach areas such as the interior of threshing machine cylinders. The specifications also note an intention to produce interchangeable heads to accomodate a range of sizes.

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