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US Patent: 533,386
Nut Wrench
Patentee:
George B. Upshaw - Abilene, KS

USPTO Classifications:
81/124.6, 81/62

Tool Categories:
wrenches : ratchet wrenches
wrenches : socket wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Francis M. Wright
W. J. Koerth
Paul Hurd
J. W. Miller

Patent Dates:
Applied: Jul. 20, 1894
Granted: Jan. 29, 1895

Patent Pictures:
George B. Upshaw patent January 29, 1895
USPTO pdf tiff
Google Patents
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Description:
Reversible ratchet wrench with replaceable sockets that attach to square extensions of the central ratchet hub. A sliding piece within the handle works to disengage one or other of the ratchet pawls.

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