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US Patent: 14,243
Nut-Wrench
Improvement in the Construction and Manufacturing of Adjustable Wrenches for Machinery and Carriages and other Purposes
Patentee:
Ferdinand Keehnold - Bridgeport, CT

USPTO Classifications:
81/356, 81/360, 81/408

Tool Categories:
wrenches : pliers type wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
I. W. Briggs
John C. Luyster

Patent Dates:
Granted: Feb. 12, 1856

Patent Pictures:
Ferdinand Keehnold patent Febr. 12, 1856
USPTO pdf tiff
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Description:
The adjusting mechanism is a sliding jaw with a cam-action lever handle sliding on a short shaft positioned at right angles to the fixed jaw and handle. There are fine teeth or grooves on the shaft and the corresponding face of the cam-action lever.

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