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US Patent: 215,479
Carriage-Wheel Wrench
Patentee:
Nelson R. Pratt (exact or similar names) - Dover South Mills, ME

USPTO Classifications:
81/75

Tool Categories:
wrenches : axle nut wrenches : axle nut wrenches that lock nut to wheel hub

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Perry A. Davis
Elmer E. Hill
John Birkenhead
S. N. Piper

Patent Dates:
Applied: Nov. 11, 1878
Granted: May 20, 1879

Patent Pictures:
Nelson E. Pratt patent May 20, 1879
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Description:
The wrench locks the axle nut to the wheel. The inner set of jaws clamps to the axle nut. The outer set of jaws clamps to the outside of the hub, and has cushioned jaw surfaces so as to not damage the hub's finish.

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