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US Patent: 446,324
Combined Nut and Pipe Wrench
Patentee:
Daniel H. Carpenter - Orlando, FL

USPTO Classifications:
81/129.5, 81/97

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. L. Ourand
E. A. Finckel
Wm. H. Finckel

Patent Dates:
Applied: Oct. 07, 1890
Granted: Feb. 10, 1891

Patent Pictures:
Daniel H. Carpenter Pat. February 10, 1891
USPTO pdf tiff
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Description:
The movable jaw has a pivoting member with teeth that engage a rack on the shank. A single example bearing this patent date matches patent no. 467,151's features and appearance.

The basic idea was revised and re-worked in Carpenter's 1892 patent (no. 467,151) and 1894 patent (no. 515,070), which incorporate a "notch" toward the tip of the hook jaw.

The idea of gripping flats adjacent to corners also is incorporated in Carpenter's Nov. 17, 1891 patent (no. 463,137).

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