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US Patent: 2,727,417
Pliers with Adjustable Toothed Pivot for Engaging Slots
Patentee:
Joseph Eifel - Chicago, IL

USPTO Classifications:
81/411, 81/416, 81/424.5

Tool Categories:
pliers

Assignees:
None

Manufacturer:
American Plierench Corporation - Chicago, IL

Witnesses:
none listed

Patent Dates:
Applied: Oct. 13, 1951
Granted: Dec. 20, 1955

Patent Pictures: [ 1 | 2 ]
Joseph Eifel patent December 20, 1955
USPTO pdf tiff
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Description:
The pivot point can be shifted by partial rotation. Rather than rotating smoothly on this pivot, the motion of the halves of the pliers is sideways travel of the rack gear teeth. The gripping faces of the the jaws are part of the patent.

The specifications cite U.S. patent nos. 528,756, 637,251, 1,122,145, 1,540,745, 1,546,139, 1,772,224, 1,818,869, 1,867,505, and 2,483,380 as references.

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