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US Patent: 430,656
Combination Nut and Pipe Wrench
Erastus Edwin King - Lees Summit, MO

USPTO Classifications:
7/139, 81/138

Tool Categories:
wrenches : pipe and nut combination wrenches


King & Hough - Lees Summit, MO

J. C. Tennison
S. B. Bowin
W. S. Duvall
J. M. Witherow

Patent Dates:
Applied: Dec. 20, 1889
Granted: Jun. 24, 1890

Patent Pictures: [ 1 | 2 ]
Erastus Edwind King patent June 24, 1890
USPTO pdf tiff
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Martin J. Donnelly Antique Tools
The thumb lever releases a spring-tensioned pawl lever that engages rack teeth on the shank of the movable jaw. The movable jaw is moved to close by a compression spring. The operating mechanism is enclosed.

Corresponding British patent 9,792 (GB-189009792) of 1890 is dated June 24, 1890.

"An extremely rare example of KING'S PATENT NUT WRENCH as produced by King & Hough, Lees Summit, Missouri under the terms of patent number 430,656, issued on June 24, 1890. A thumb lever releases the lower jaw mechanism to precisely adjust in place. This is the first example of this rare wrench that we have ever offered for sale." -- Description courtesy and copyrighted by Martin J. Donnelly Antique Tools

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