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US Patent: 1,060,891
Addison B. Carll - Boothwyn, PA

USPTO Classifications:
81/165, 81/177.8, 81/178

Tool Categories:
wrenches : pipe and nut combination wrenches


M. W. Robinson Co. - Brooklyn, NY
Practical Tools Co. - New York, NY

F. T. Chapman
Jas. K. McLathran
John B. Holt
Orvil W. Smith

Patent Dates:
Applied: Jul. 16, 1912
Granted: May 06, 1913

Patent Pictures: [ 1 | 2 | 3 ]
Addiston B. Carll patent May 6, 1913
USPTO pdf tiff
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The patent presents two alternate head structures; one where the overall angle of the head is adjustable in relation to the handle, and the other with the head fixed to the handle. Both structures have a fixed jaw with one sloping & toothed face for use as a pipe wrench and a flat face at right angle to the movable jaw for nut wrench purposes. Both structures have a movable jaw which can be set to bear either against flat nut wrench face or sloping pipe wrench face. Only the "fixed head" variant shown in figs. 1 & 2 was produced.

Carll wrenches are found with a variety of markings suggesting a succession of production companies. Initially produced in 6" and 10" sizes.

A 1920 write-up for the wrench gives Practical Tools Co. as the manufacturer with M. W. Robinson Co. as sales agent -- both firms having the same address - 296 Broadway, New York City. That write-up notes the maximum "safe" jaw openings for 6", 8" and 10" wrenches.

A similar reversible jaw appears in the January 19, 1897 Canfield patent (no. 575,592).

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