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US Patent: 7,254X
Wrench
Improvement in the Rack Wrench
Patentee:
Henry King - Springfield, MA

USPTO Classifications:
81/140

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

Assignees:
None

Manufacturer:
Homer Foot - Springfield, MA

Witnesses:
William Bliss
Patrick Lathrop

Patent Dates:
Granted: Oct. 25, 1832

Patent Pictures: [ 1 | 2 ]
Henry King patent October 25, 1832
USPTO pdf tiff
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Description:
Considered the first U.S. adjustable wrench patent.

A slide adjust nut wrench with the adjustment held by a spring-loaded "click" engaging teeth in a rack on the shank. According to Ken Cope's "American Wrench Makers 1830-1930", King lived at Springfield, Massachusetts and the wrench was manufactured there by King or by Bemis & Call.

One known example marked H. FOOT; another marked only PATENTED.

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