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US Patent: 6,271X
Wrench
Improved Bed Key
Patentees:
Judson Blake - n.a., n.a.
Daniel Cushing - n.a., n.a.

USPTO Classifications:
81/124.4

Tool Categories:
wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
K. ? B. Snow
John A. Nadworth ?

Patent Dates:
Granted: Dec. 14, 1830

Patent Pictures:
Blake & Cushing Dec. 14, 1830 -- Bed Key
USPTO pdf tiff
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Description:
1st wrench patent observed in U.S. Patent files. The patent describes a "cross-shaped" bed key with wrench sockets at the crossing and in the ends of the arms. Not known to have been produced.

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