US Patent: 562,878 - Pipe Wrench


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US Patent: 562,878

Pipe Wrench

Patentee:

Edward Wright - Worcester, MA

USPTO Classifications:

81/93

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Edward Wright - Worcester, MA

Peck, Stow and Wilcox Company - Southington, CT

Witnesses:

Patent Dates:
Applied:	Jan. 10, 1896
Granted:	Jun. 30, 1896

Patent Pictures: [ 1 | 2 ]

Edward Wright patent June 30, 1896

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Description:

The movable jaw has a rocking section with a spring holding the gripping surface out from the shank. The arrangement allows for sufficient movement for the jaws to grip pipe, without proceeding so far as to crush the pipe.