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US Patent: 1,386,149
Allen C. Allan - Chicago, IL

USPTO Classifications:

Tool Categories:
wrenches : pliers type wrenches


A. D. Wrench and Tool Co. - Baraboo, WI

A. J. Sauser

Patent Dates:
Applied: Apr. 26, 1920
Granted: Aug. 02, 1921

Patent Pictures: [ 1 | 2 ]
Allen C. Allan patent August 2, 1921
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Introduces a pivot-bolt as an alternate to the "pass through" connection in the sliding pivot tongs / wrench patented by Allan in April, 1920 (pat. no. 1,337,986). The shape of the tongs halves and location of the slot for the pivot is such that the jaws remain parallel through their range of adjustment. A plier wrench conforming to this patent was produced, marked "Patent Pending."

This is the middle of three patents cited on the KANT-SLIP plier wrench. This patent together with the April 1920 patent was used in the KANT SLIP A.D. WRENCH & TOOL CO BARABOO WIS tongs wrench (see patent no. 1,490,902, 2nd image).

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