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US Patent: 380,735
Wrench
Patentee:
William L. Tobey - Boston, MA

USPTO Classifications:
81/157, 81/DIG.6

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fredk. L. Emery
Howard F. Eaton
J. C. Sears
G. W. Gregory

Patent Dates:
Applied: Jan. 03, 1888
Granted: Apr. 10, 1888

Patent Pictures:
William L. Tobey patent October 10, 1888
USPTO pdf tiff
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Description:
Combination screw and quick adjust nut wrench. The shank has threads on one face. A spring holds the adjusting nut in contact with those threads. The interior of the adjusting nut has sufficient space to be disengaged from the threads to allow the movable jaw to slide freely.

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