US Patent: 637,251


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US Patent: 637,251

Wrench

Patentee:

Arthur L. Hamilton (exact or similar names) - Kearney, NE

USPTO Classifications:

81/131, 81/412

Tool Categories:

wrenches : pliers type wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Jun. 29, 1899
Granted:	Nov. 21, 1899

Patent Pictures: [ 1 | 2 ]

Arthur L. Hamilton patent November 21, 1899

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Description:

Slip-joint pliers / tongs type body with jaw extensions on one side that form corners of a "socket." The patent is for the form of the slip joint size adjustment.

An October 1903 AMERICAN BLACKSMITH item shows a sample configured as an axle nut wrench but it is not clear if Hamilton produced them for sale, or only made a prototype.