Textiles: fiber preparation – Working – Drafting
Patent
1977-12-21
1979-07-17
Newton, Dorsey
Textiles: fiber preparation
Working
Drafting
19105, D01H 538
Patent
active
041610520
ABSTRACT:
An apparatus for making a uniform, continuous sliver has a sliver sensor for continuously sensing the throughput quantity of the sliver and generating a continuous main regulating signal x as a function of the throughput quantity and a first regulator connected to the sliver sensor for receiving the signal x and generating a reference signal w.sub.h as a function of the signal x. The apparatus further has a tuft column sensor connected to a tuft shaft of a card for sensing a variable of the tuft column advancing in the tuft shaft. The tuft column sensor has a signal generator for emitting an auxiliary regulating signal x.sub.h as a function of the sensed variable of the tuft column and a desired value setter which receives the signal w.sub.h and varies the signal x.sub.h as a function of the signal w.sub.h. Further, the apparatus has a tuft column altering arrangement including a second, auxiliary regulator which receives the signal x.sub.h and applies a setting signal y to a card feeder for altering the tuft column as a function of the signal x.sub.h.
REFERENCES:
patent: 3474501 (1969-10-01), Jeanmaire
patent: 3984895 (1976-10-01), Grice, Jr.
Newton Dorsey
Trutzschler GmbH & Co. KG
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