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US Patent: 1,490,903
George Burford Anderson - Detroit, MI

USPTO Classifications:
81/165, 81/356, 81/361, 81/388

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches


Claude Sintz Mfr. - Detroit, MI
GESCO - Detroit, MI

G. Murphy
W. G. Hammond

Patent Dates:
Applied: Jan. 21, 1921
Granted: Apr. 22, 1924

Patent Pictures: [ 1 | 2 ]
George B. Anderson Pat. April 22, 1924
USPTO pdf tiff
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Produced as the UNIVERSAL CLAUDE-SINTZ MFR. DETROIT, this patent was the last of three for the UNIVERSAL screw adjust nut wrench with side lever to tighten the grip. The lever moves both the adjusting worm and movable jaw. The jaw movement is sufficient to allow for "ratchet" action on hex nuts sized within the wrench's capacity. This patent also includes the replaceable bearing plate between the lever and adjusting worm.

The patent date shown on the wrench is 4-24-1924. The June 3, 1919 patent referenced is no. 1,305,628.

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