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US Patent: 123,040
Improvement in Wrenches
Patentee:
Philip Nichols - Troy, NY

USPTO Classifications:
81/163, 81/165

Tool Categories:
wrenches : nut wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Samuel Foster
P. H. McCormick
R. C. McCormick

Patent Dates:
Granted: Jan. 23, 1872

Patent Pictures:
Philip Nichols Pat. Jan. 23, 1872
USPTO pdf tiff
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Description:
A right- and left-hand screw moves jaws that slide on a transverse frame member.

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