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US Patent: 306,439
Benjamin F. Stockford - Surgis, MI

USPTO Classifications:

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


B. F. Stockford - Sturgis, MI
Stockford Ratchet Wrench Co. - Elkhart, IN

George Cook
E. J. Nottingham
Talcott C. Carpenter
F. G. Heald

Patent Dates:
Applied: May 31, 1884
Granted: Oct. 14, 1884

Patent Pictures:
Benjamin F. Stockford patent October 14, 1884
USPTO pdf tiff
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Stockford's nut wrench carries over some features from his July 17, 1883 patent (no. 281,318). It has a spring which tends to close the movable jaw. It has a rocking piece within the movable jaw that can release the adjustment. The trigger on the movable jaw also releases or sets the adjustment.

Corresponding Canadian patent (no. CA-19,879) was issued Aug. 1, 1884.

Used in conjunction with Stockford's July 1, 1890 patent (no. 431,081) for a ratchet-action quick-adjusting nut wrench. One known example is marked, "B.F. STOCKFORD - PAT. & M.F.R. - STURGIS, MICH // PAT'D JULY 17, '83 - PAT'D OCT. 14, '84"

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