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US Patent: 107,539
Wrench
Improvement in Wrenches
Patentee:
Franklin P. Rand - Pawtucket, RI

USPTO Classifications:
81/177.9, 81/180.1, 81/61

Tool Categories:
wrenches : wrench adjustment types : angle adjustable wrenches
wrenches : wrench components : wrench sockets

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Royal Lee
James A. Brown

Patent Dates:
Granted: Sep. 20, 1870

Patent Pictures:
F. P. Rand Pat. Sept. 20, 1870
USPTO pdf tiff
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Description:
This unusual patent has two distinct features. The first is the interchangeable wrench jaws that fit into a socket. The second is the ratchet and pawl action which changes the angle of the jaws in relation to the handle.

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