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US Patent: 1,143,350
Pipe Wrench
Laurance D. Benedict - Chicago, IL

USPTO Classifications:
81/101, 81/177.2

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench handle components


Benedict Wrench Co. - Chicago, IL

Harry S. Gaither
Ruth S. Zettervall
Wm. F. Freudenreich

Patent Dates:
Applied: Dec. 18, 1913
Granted: Jun. 15, 1915

Patent Pictures: [ 1 | 2 ]
Laurance D. Benedict patent June 15, 1915
USPTO pdf tiff
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The handle can easily be extended for extra leverage. The BENEDICT EXTENSION HANDLE PATENT APPLIED FOR pipe wrench has a solid extension handle rather than the hollow tubular piece shown in the patent drawing; the remainder of the wrench matches the drawing. The actual patented feature is the spring and related structure around the movable jaw.

This patent was cited as prior art in patent no. 2,555,395.

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