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US Patent: 42,062
Improved Sliding Nut for Wrenches and Other Tools
James S. Arthur - Cordaville, MA

USPTO Classifications:
81/128, 81/129.5, 81/143

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
woodworking tools : planes : plane adjustment mechanisms


Not known to have been produced

Charles Du Bois
James H. Gridley

Patent Dates:
Applied: Feb. 11, 1864
Granted: Mar. 29, 1864

Patent Pictures:
James S. Arthur Pat. Mar. 29, 1864
USPTO pdf tiff
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A rotating nut with an internal threads and cavity throws teeth into and out of engagement with a rack. The adjusting device is shown in use on a movable wrench jaw The description also notes how it could be used to adjust a plow plane.

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