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US Patent: 226,339
Monkey-Wrench
Patentee:
John Moffet - New York, NY

USPTO Classifications:
81/170

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

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Frank H. Duffy
P. C. Dieterich
William H. Elting
Alexander E. Reed

Patent Dates:
Applied: Feb. 26, 1880
Granted: Apr. 06, 1880

Patent Pictures: [ 1 | 2 ]
John Moffet patent April 6, 1880
USPTO pdf tiff
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Description:
The adjusting screw turns freely in the center of the shank. The inside of the movable jaw has partial threads. The surface of the adjusting screw is lightly knurled to provide a gripping surface. Thus the wrench is composed of three pieces.

Known example marked J. MOFFET with the patent date is a pocket wrench with a slide-out screwdriver in the handle.

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