Textiles: spinning – twisting – and twining – Apparatus and processes – Alternate twist
Patent
1978-09-20
1980-09-02
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Alternate twist
57328, 57333, 57350, D02G 326, D02G 328, D01H 528, D02G 104
Patent
active
042199980
ABSTRACT:
An apparatus for twisting a fibre strand to have repeated along its length alternating zones of opposite twist comprises a fluid vortex device having two fluid inlets and a valve controlling fluid flow to the inlets. The valve comprises a hollow cylindrical rotatable valve member and a sleeve having a number of outlet ports surrounding the member. Fluid supplied to the hollow member is distributed to the outlet ports by rotation of the member. Plastics dry bearings between the member and the sleeve act to prevent improper flow of air along the abutting surfaces. The vortex device comprises a member formed with a bore, the bore having a wide port into which the fluid is injected through the inlets and a restricted port forming a venturi of diameter of the order twice that of the yarn. A plug through which the yarn passes at the end of the bore remote from the venturi inhibits escape of air from that end.
REFERENCES:
patent: 2884756 (1959-05-01), Head
patent: 3490219 (1970-01-01), Ozawa et al.
patent: 3702055 (1972-11-01), Kosaka et al.
patent: 3742692 (1973-07-01), Bense
patent: 4055039 (1977-10-01), Movshovich et al.
patent: 4058960 (1977-11-01), Movshovich et al.
patent: 4083172 (1978-04-01), Norris et al.
patent: 4123893 (1978-11-01), Chambley et al.
patent: 4124972 (1978-11-01), Arai et al.
Feldman Donald H.
Petrakes John
Platt Saco Lowell Limited
LandOfFree
Apparatus for twisting a strand does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for twisting a strand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for twisting a strand will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1703430