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US Patent: 575,592
Philip B. Canfield - Cortland, NY

USPTO Classifications:
81/165, 81/170, 81/177.1, 81/178

Tool Categories:
wrenches : pipe and nut combination wrenches
wrenches : wrench components


Not known to have been produced

H. F. Riley
Milton O'Connell
J.  W. Daniels
Geo. S. Edwards

Patent Dates:
Applied: Mar. 18, 1896
Granted: Jan. 19, 1897

Patent Pictures:
Philip B. Canfield patent January 19, 1897
USPTO pdf tiff
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Screw-adjust, with a notch cut through the adjusting screw to allow the reversible adjustable jaw to quickly adjust for size, or be slid out and reversed to switch between use as a pipe or nut wrench. The handle and fixed jaw portion are formed of a pair of stampings.

The reversible movable jaw that works with nut or pipe jaw surfaces on the fixed jaw is similar to the May, 1913 CARLL patent (no. 1,060,891).

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