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US Patent: 41,995
Improved Screw-Wrench
Hewet Union Wrench
Henry Wheaton Hewet - New York, NY

USPTO Classifications:

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


W. L. Miller - New York, NY
Fowle & Co. - New York, NY

W. B. Chamberlain
A. V.W. Van Vechten
W. T. Dobson
W. R. Mervin

Patent Dates:
Granted: Mar. 22, 1864
Antedated: Jan. 25, 1864

Patent Pictures: [ 1 | 2 | 3 ]
Hewet Union Wrench patent January 25, 1864
USPTO pdf tiff
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Extended externally threaded and fluted tube serves dual function of adjusting the moveable jaw and forming most of the wrench handle. The design structurally is similar to Hewet's June 27, 1840 patent (no. 1,659). Mfr. / agent name taken from Ken Cope's "American Wrench Makers 1830-1930." Martin Donnelly's mjdtools auctions offered one marked "W.L. Miller, 479 1st Ave., New York, New York." Other examples have a Croton Falls, NY marking and local histories of Westchester County NY note a Mr. Miller having a wrench factory at Croton Falls.

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