US Patent: 411,872 - Pipe Wrench


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US Patent: 411,872

Pipe Wrench

Patentee:

George F. Newell (exact or similar names) - Newton, MA

USPTO Classifications:

81/165, 81/173, 81/186

Tool Categories:

wrenches : pipe wrenches

Assignees:

Stiles Frost - Newton, MA

F. L. Ferguson - Byfield, MA

Manufacturer:

G. F. Newell - Boston, MA

Witnesses:

Patent Dates:
Applied:	Jan. 21, 1889
Granted:	Oct. 01, 1889

Patent Pictures: [ 1 | 2 ]

George F. Newell patent October 1, 1889

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Description:

The shank of the movable jaw is rectangular, with threads on the two short faces. The adjusting nut is retained on the body of the wrench by lips that fit a groove in the adjusting nut. The jaw on the main shank has a "tooth", and the face of the adjustable jaw is a hardened toothed plate dovetailed into the jaw.

A May, 1890 IRON AGE item announced the wrench to the hardware trade.