US Patent: 643,268


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US Patent: 643,268

Wrench

Patentee:

John Hallner (exact or similar names) - Mead, NE

USPTO Classifications:

81/167

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : wrench combination tools

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Apr. 11, 1899
Granted:	Feb. 13, 1900

Patent Pictures:

John Hallner patent February 13, 1900

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Description:

Turning the handle adjusts the jaw opening; a spring provides frictional resistance to help hold the adjustment. The end of the shank has a screwdriver tip which is exposed when the jaws are fully closed.