US Patent: 453,820


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US Patent: 453,820

Wrench

Patentee:

Charles E. Pickens (exact or similar names) - Grand Ledge, MI

USPTO Classifications:

81/162, 81/94

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

N. L. Lindop

P. M. Hulbert

M. B. O'Dogherty

Patent Dates:
Applied:	Feb. 26, 1891
Granted:	Jun. 09, 1891

Patent Pictures:

Charles E. Pickens patent June 9, 1891

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Description:

The frame consists of parallel rods clamped by tapered threads on the handle. The inner faces of the rods have threads. The adjusting nut in the movable jaw has threads on opposite edges, with the intervening sides cut away, and a short lever handle to swing it in and out of engagement with the threaded rods. The movable jaw has a rocking jaw piece suitable for gripping pipe.