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US Patent: 573,313
John F. Tiner - Sutherland Springs, TX

USPTO Classifications:
81/186, 81/417, 81/426, 81/426.5

Tool Categories:
wrenches : pliers type wrenches

John F. Tiner - Sutherland Springs, TX
Ella J. Newton - Austin, TX

Wm. Hjorth - Jamestown, NY
America Co. - Jamestown, NY
America Co. - Rockford, IL

C. B. Brown
Gratz Brown
G. M. Anderson
George H. Parmelee

Patent Dates:
Applied: Apr. 14, 1896
Granted: Dec. 15, 1896

Patent Pictures: [ 1 | 2 | 3 ]
John F. Tiner Pat. Dec. 15.1896
USPTO pdf tiff
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The main focus of the patent is the shape of the jaws to hold the opposing corners of a range of sizes of square nuts.

Corresponding June 14, 1897 Canadian patent no. CA-56,258 includes a pipe grip jaw attachment, and gives the full names of both principals.

Some Wm. Hjorth plier wrenches marked with this patent date may be anticipating A. W. Hjorth's Sept. 8, 1903 patent (no. 738,444). The America Co. Rockford, ILL LIGHTNING WRENCH based on this patent was produced in larger sizes than the corresponding tools from other makers. The wire cutter notch on the Hjorth tool is between the jaws; the America Co. tool has the wire cutter on one side.

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