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US Patent: 63,356
Improved Wrench and Tongs
Patentee:
John N. Arvin - Valparaiso, IN

USPTO Classifications:
81/355, 81/427

Tool Categories:
wrenches : pliers type wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. S. Skinner
R. Bell, Jr.

Patent Dates:
Granted: Apr. 02, 1867

Patent Pictures:
John N. Arvin Pat. April 2, 1867
USPTO pdf tiff
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Description:
The positioning of the movable jaw segment and handle and the slot in the extension of the movable jaw enable the jaws to remain parallel while opening and closing.

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