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US Patent: 879,305
Wrench or Nut Jack
Patentee:
William H. Oliver - Chicago, IL

USPTO Classifications:
81/128

Tool Categories:
wrenches : axle nut wrenches

Assignees:
None

Manufacturer:
Oliver Mfg. Co. - Chicago, IL

Witnesses:
Robert H. Weir
J. H. Jochum, Jr.
Frances A. Hopkins

Patent Dates:
Applied: Sep. 22, 1906
Granted: Feb. 18, 1908

Patent Pictures:
William H. Oliver Patent February 18, 1908
USPTO pdf tiff
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Description:
Most of the parts are malleable iron castings. The swinging adjustment lever in the movable jaw structure engages a rack for the adjustment.

The lever in this patent replaces the adjusting wheel in Oliver's Sept. 10, 1907 patent (no. 865,519).

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