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US Patent: 1,659
Screw Wrench
Henry Wheaton Hewet - New York, NY

USPTO Classifications:
81/170, 86/20.1

Tool Categories:
wrenches : nut wrenches

Hawley F. Clapp - New York, NY

Edmund F. Dixie - Worcester, MA

F. Whiting
David D. Van Alstyne
G. Sherer
Wm. Heux

Patent Dates:
Granted: Jun. 27, 1840

Patent Pictures: [ 1 | 2 | 3 ]
Henry W. Hewet patent June 27, 1840, with 15 inch HEWET - E..F. DIXIE nut wrench
USPTO pdf tiff
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Collins Company vs. Loring Coes et. al. (1889 Supreme Court decision)
An externally threaded tube on the shank of the monkey wrench adjusts a moveable jaw with internal threads cut in the base.

Produced by E.F. Dixie of Worcester, Mass. in the early 1850s.

Versions of the wrench using a screw-on ferrule or threaded shank and nut to support the ferrule were introduced as evidence and cited as "prior art" in the course of the Collins Company vs. Loring Coes et al. law suit & Loring Coes vs. The Collins Company counter suit which led to the U.S. Supreme Court decision which found the 1865 "Jordan & Smith" patent void for want of novelty.

Hewet's 1864 Union Wrench (patent no. 41,995) is structurally similar.

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