US Patent: 14,249


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US Patent: 14,249

Wrench

Patentee:

Elisha P. Newton (exact or similar names) - Green Island, NY

USPTO Classifications:

81/162

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

wrenches : nut wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

A. A. Lee

J. J. Savage

Patent Dates:
Granted:	Feb. 12, 1856

Patent Pictures:

Elisha P. Newton patent February 12, 1856

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Description:

Concave threads cut in the back of the wrench shank are engaed by a threaded half-cylinder in the movable jaw to hold an adjustment. The half-cylinder has a small thumb-piece to flip in in or out of engagement; when the threads are disengaged, the movable jaw slides freely.