US Patent: 979,805


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US Patent: 979,805

Wrench

Patentee:

Arthur E. Smiley (exact or similar names) - Springfield, MA

USPTO Classifications:

81/186, 81/328, 81/340, 81/383, 81/391

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

A. C. Fairbanks

J. M. Davenport

F. A. Cutter

Patent Dates:
Applied:	Jul. 26, 1910
Granted:	Dec. 27, 1910

Patent Pictures:

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Description:

The lever handle has a rod with compression spring connected to the movable jaw. Squeezing the lever handle tightens the jaws, and as the pivot goes "over center", the grip locks.