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US Patent: 1,720
Screw-Wrench
Patentees:
Stephen Kane - New York, NY
Thomas Keane - New York, NY
James Keane - New York, NY

USPTO Classifications:
81/176

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

Assignees:
None

Manufacturer:
A. B. Taylor - New York, NY

Witnesses:
H. R. Sewell
John Thorp

Patent Dates:
Applied: Jun. 27, 1840
Granted: Aug. 12, 1840

Patent Pictures: [ 1 | 2 ]
Kane, Keane and Keane patent Aug. 12, 1840, with Herb Page replica of production model
USPTO pdf tiff
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Description:
The patent is a revolving screw whose threads work into worm teeth cut into the edge of the wrench handle. The screw is within the movable jaw.

An example marked "A.B. TAYLOR HAGUE ST. NEW YORK, N.Y. PATENT 1840" appeared as lot no. 625 of the October 14, 2006 mjdtools auction at Indianapolis, IN. An 1847 ad shows Taylor marketing the wrench at that location.

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