Textiles: spinning – twisting – and twining – Apparatus and processes – Alternate twist
Patent
1977-10-21
1978-12-05
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Alternate twist
57293, H01B 1304, D07B 300
Patent
active
041279824
ABSTRACT:
A plurality of elongated elements is maintained at a distance from one another by a spacing element, joined together at an inlet nipple, and twisted in the same twisting direction at a constant twisting speed by a twisting head located downstream of the inlet nipple, to emerge from the twisting head through an outlet nipple. The distance of the spacing element from the inlet nipple is cyclically varied by displacing the spacing element at a displacement speed which is lower than the advancement speed of the elements. The displacement speed is increased to the advancement speed during the displacement of the spacing element from a terminal position of a trajectory of displacement of the separating element which is more remote from the twisting head than the other terminal position, in a section of the trajectory having a length which is a predetermined fraction of the length of the trajectory. When a plurality of SZ-twisted strands is to be united into a single braid downstream of the outlet nipples from which the individual strands emerge, the spacing elements associated with the individual strands are all displaced in the same displacement cycles, but the cycles of the respective spacing elements are time-shifted relative to one another so that the transmission from the S-twist to the Z-twist will occur at a different location of the braid for each of the strands.
REFERENCES:
patent: 3052079 (1962-09-01), Henning
patent: 3797217 (1974-03-01), Braun
patent: 3884024 (1975-05-01), Oestreich
patent: 3884025 (1975-05-01), Oberender et al.
Braun Dieter
Cramer Hugo
Felten & Guilleaume Kabelwerke GmbH
Striker Michael J.
Watkins Donald
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