Apparatus for forming an elogated tubular element into a helix

Details Apparatus for forming an elogated tubular element into a helix Apparatus for forming an elogated tubular element into a helix

1990-02-08

1991-03-05

Combs, E. Michael

Metal deforming

By deflecting successively-presented portions of work during...

To form helical coil or tube

72145, B21F 304

Patent

active

049968610

ABSTRACT:
The apparatus of the present invention includes an externally threaded spindle to which one end of a thin walled metal tube is detachably secured. The spindle is rotated to wind the tube into the external thread, thereby producing a helix. As the tube is wound onto the spindle, it is pressed into the thread grooves by an auxiliary roller.

REFERENCES:
patent: Re814 (1859-09-01), Perkins et al.
patent: 250528 (1881-12-01), Hayden
patent: 304639 (1884-09-01), Grimmett et al.
patent: 865803 (1907-09-01), Row
patent: 3186820 (1965-06-01), Adkins

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