US Patent: 260,771 - Monkey Wrench


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US Patent: 260,771

Monkey Wrench

Patentee:

Charles H. Miller - Erie, PA

USPTO Classifications:

81/166

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : wrench components : wrench handle components

Assignees:

None

Manufacturer:

Girard Wrench Mfg. Co. - Girard, PA

Witnesses:

Patent Dates:
Applied:	Dec. 21, 1881
Granted:	Jul. 11, 1882

Patent Pictures:

Charles H. Miller patent July 11, 1882

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Description:

The parts are to be made of malleable iron castings. The slide for the head is cast "spread" and is closed around the head after the head and adjusting worm are installed.

Known examples do not have legible markings.