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US Patent: 14,249
Wrench
Patentee:
Elisha P. Newton - 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
USPTO pdf tiff
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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.

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