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US Patent: 481,230
Nut and Bolt Wrench
Patentee:
John Hoval - Stafford, TX

USPTO Classifications:
81/165, 81/170, 81/437, 81/DIG.5

Tool Categories:
wrenches : nut wrenches
screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
O. W. Johnson
E. C. Wells
Isodor Japhet
G. H. Prudorvis

Patent Dates:
Applied: Feb. 09, 1892
Granted: Aug. 23, 1892

Patent Pictures:
John Hoval patent August 23, 1892
USPTO pdf tiff
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Description:
The rack teeth on the movable jaw do not extend to the end of the base so the movable jaw cannot fall out. The movable jaw includes a socket for a screwdriver bit; the screwdriver is a major facet of the patent.

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