US Patent: 324,378 - Pipe Wrench


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US Patent: 324,378

Pipe Wrench

Patentee:

James T. Hayden - Boston, MA

USPTO Classifications:

81/64, 81/90.4

Tool Categories:

wrenches : pipe wrenches : chain and strap wrenches

Assignees:

None

Manufacturer:

Belden Machine Company - New Haven, CT

Witnesses:

Patent Dates:
Applied:	Jan. 16, 1885
Granted:	Aug. 18, 1885

Patent Pictures: [ 1 | 2 ]

James T. Hayden patent August 18, 1885

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Description:

The jaws are hinged clamps held to the handle by a loop and closed by a cam on the handle. One handle would be used with several sizes of clamps. This non-marring wrench was designed for brass pipe or other pipe with a bright finish.