Tool for forming a scroll

Metal deforming – By deflecting successively-presented portions of work during... – To form spiral coil

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B21C 4700

Patent

active

046088474

ABSTRACT:
A tool and method for forming a scrolled end of a metallic bar or strip. The tool comprises a pair of horizontal plates having a scroll forming bent end, an eccentric having a vertical pivot extending through said plates, and an upper bolt head with a socket to enable insertion of a tool or wrench for turning or holding the eccentric. A depending sleeve with internal serrations is provided for driving said tool by a motor. A guide roll extending upwardly from a work table on which said tool is mounted is in spaced relationship to serve as a stop as the tool is rotated by said motor in a counterclockwise direction to form the scroll.
The method comprises inserting the end of a metallic bar into the concave opening or slot of said scroll forming bent end and applying a wrench to the socket so as to turn the eccentric sufficiently to grip the inserted end of the strip, and then rotating by a drive motor, a dependent sleeve so that the assembly will rotate in a counterclockwise direction to form a scroll on the end of said bar.

REFERENCES:
patent: 533513 (1895-02-01), Weed
patent: 797287 (1905-08-01), Jewett
patent: 823765 (1906-06-01), Conklin
patent: 924907 (1909-06-01), Jones
patent: 1731087 (1929-10-01), Zatti
patent: 2822023 (1958-02-01), Ahern
patent: 3020949 (1962-02-01), Garcia

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