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US Patent: 1,872,780
Wrench
Patentee:
Joe S. McKibbon (exact or similar names) - Columbia, TN

USPTO Classifications:
81/118

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
McKibbon Universal Wrench Company - Nashville, TN

Witnesses:
none listed

Patent Dates:
Applied: Oct. 01, 1930
Granted: Aug. 23, 1932

Patent Pictures:
Joe S. McKibbon patent August 23, 1932
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Description:
The fourth McKibbon patent -- (the previous ones are 1,423,499, 1,709,589, and 1,730,671 )-- has a modified adjustment screw, and a modified form of the base of the movable jaw. This patent shows a single jaw structure designed for gripping pipe. The "KIBBON KATCH-KWIK" pipe wrench incorporates aspects of this patent as well as the prior ones. The shifting action of the movable jaw tightens the grip.

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