US Patent: 902,799


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US Patent: 902,799

Wrench

Patentee:

Ralph S. Barrett (exact or similar names) - Indianapolis, IN

USPTO Classifications:

269/242, 81/163, 81/177.1

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : wrench components : wrench handle components

Assignees:

Leo M. Barrett - Indianapolis, IN

Manufacturer:

Leo M. Barrett - Indianapolis, IN

Witnesses:

Patent Dates:
Applied:	Jul. 17, 1908
Granted:	Nov. 03, 1908

Patent Pictures:

Ralph S. Barrett patent Nov. 3, 1908

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Description:

The patent covers multiple details of the construction. Two prominent features are the adjusting screw with right- and left-hand threads, and the side flanges which protect the handle and adjuster from some incidental damage.

Advertised as the Double-Speed Monkey Wrench.