Production of yarn

Details Production of yarn Production of yarn

1979-07-09

1980-10-21

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57341, D01H 788, D01H 792, D02G 338

Patent

active

042286395

ABSTRACT:
In order to produce core yarn wrapped with at least two separate wrapper yarns of the same or opposite hands, core material is passed in succession through a pair of rotary hollow spindles, each carrying a package of wrapper yarn whereby the core material is wrapped and which are relatively displaced so that the path of the material between a point just before the entrance of the first spindle and a point just after the exit of the second spindle deviates from a straight line so as to cause the core material or the resultant yarn to engage a rotary end of at least one of the spindles so as to apply false twist. The spindles may be supported so that their axes are displaced or displaceable in relation to one another for which purpose each spindle may be carried by a mounting capable of angular displacement about a support shaft and capable of being secured in any one of a range of angular positions. The apparatus may also include a take-up roller or rollers and a pair of intermediate rollers between the exit of the first spindle and the take-up roller or rollers.

REFERENCES:
patent: 3166885 (1965-01-01), Bridgeman et al.
patent: 3527045 (1970-09-01), Wilson
patent: 3570233 (1971-03-01), Nalpas et al.
patent: 3717959 (1973-02-01), Chatin
patent: 3868812 (1975-03-01), Chatin

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