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US Patent: 464,751
Wrench
Patentee:
Frank S. Cook - Elkhart, IN

USPTO Classifications:
81/141

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Frank R. Packham
Chas. J. Welch
Fred C. Kaiser
Chas. M. Kessler

Patent Dates:
Applied: Mar. 01, 1890
Granted: Dec. 08, 1891

Patent Pictures:
Frank S. Cook patent December 8, 1891
USPTO pdf tiff
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Description:
A spring in the handle pulls the movable jaw closed. The adjustment is held by a cam / locking lever pressing the toothed shank of the movable jaw against a serrated portion in the handle. There is enough "flex" in the connection to allow the jaws to spread apart on "reverse" motion of the handle, and thereby grip & release a workpiece in a form of ratchet action.

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