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US Patent: 59,852
Improvement in Wrenches
James McLaren - Albany, NY

USPTO Classifications:

Tool Categories:
wrenches : pipe and nut combination wrenches


J. McLaren - Albany, NY

H. S. McCall
Joseph W. Russell

Patent Dates:
Granted: Nov. 20, 1866

Reissue Information:
Reissued as RE8,064 (Jan. 29, 1878)

Patent Pictures: [ 1 | 2 ]
J. McLaren Pat. Nov. 20, 1866
USPTO pdf tiff
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A pivoted spring-jaw forms a pipe gripping jaw for a second jaw to complement the square nut jaws.

A known example is marked, "JAS. McLAREN PATd NOV. 20 1866 ALBANY NY." Ken Cope's "American Wrench Makers 1830-1930" notes an 1872 "Scientific American" ad in which McLaren is offering the patent on a royalty basis. An 1877 hardware wholesaler's catalog listing for "EUREKA COMBINATION WRENCH" shows this design. Late 1880s ads for the Rouse combination nut and pipe wrench note this patent as the basis for the combination nut and pipe movable jaw.

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