US Patent: 333,836 - Pipe Wrench


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US Patent: 333,836

Pipe Wrench

Patentee:

James E. Davis (exact or similar names) - Palmyra, OH

USPTO Classifications:

81/98

Tool Categories:

wrenches : wrench adjustment types : self-adjust wrenches

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Unknown

Witnesses:

Patent Dates:
Applied:	Aug. 10, 1885
Granted:	Jan. 05, 1886

Patent Pictures: [ 1 | 2 ]

James E. Davis patent January 5, 1886

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Description:

Swinging hook jaw which forces the pipe against a toothed curved surface. The design matches a hook jaw pipe wrench marked FAIRBANKS, with the patent date.

The specifications note and disclaim any features covered by patent nos. 145,263, 278,264, and 307,830.