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US Patent: 6,077
Improved Hinged Claw-Wrench
Patentee:
Adam Hay - Newark, NJ

USPTO Classifications:
81/186, 81/98

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. E. Beach
O. D. Munn

Patent Dates:
Applied: Oct. 16, 1848
Granted: Jan. 30, 1849

Patent Pictures:
Adam Hay patent January 30, 1849
USPTO pdf tiff
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Description:
The combination of a hinged claw and protruberance on the side of the shank allow the wrench to hold several sizes of nuts or bolts.

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