US Patent: 762,420 - Adjustable Wrench


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US Patent: 762,420

Adjustable Wrench

Patentee:

Frank J. Leibman (exact or similar names) - Brooklyn, NY

USPTO Classifications:

81/143

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : wrench adjustment types : wedge adjust wrenches

Assignees:

Frank J. Leibman - Brooklyn, NY

Charles A. Leibman - Brooklyn, NY

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Aug. 07, 1903
Granted:	Jun. 14, 1904

Patent Pictures:

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Description:

The movable jaw has an internal wedge-shaped toothed block that can engage a rack on the shank. The block is keyed to a second wedge-shaped block that is shifted by an adjusting screw.