US Patent: 458,934 - Pipe Wrench


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US Patent: 458,934

Pipe Wrench

Patentee:

John S. Barden (exact or similar names) - East Providence, RI

USPTO Classifications:

81/300, 81/424.5

Tool Categories:

wrenches : pliers type wrenches

Assignees:

Henry F. Jenks - Pawtucket, RI

John S. Barden - East Providence, RI

Manufacturer:

H. F. Jenks - Pawtucket, RI

Frank Mossberg Co. - Attleboro, MA

Witnesses:

Patent Dates:
Applied:	Dec. 10, 1890
Granted:	Sep. 01, 1891

Patent Pictures: [ 1 | 2 | 3 | 4 ]

John S. Barden patent Sept. 1, 1891

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Description:

The jaws hinge at the end of the handle, and are held in alignment by a tongue. Known examples do not have the movement limit stop on the tongue, nor the square nut holding "flats" adjacent the pivot. Some wrenches based on this patent also dispensed with the alignment tongue.

The Frank Mossberg Company "FALCON" and "EAGLE" wrenches were based on this patent (see images 3 & 4).

See also patent no. 1,799,622 for a 1930's slip-jointed version of a similar design.