Textiles: spinning – twisting – and twining – Apparatus and processes – Monitor and control
Patent
1993-02-09
1994-12-06
Stodola, Daniel P.
Textiles: spinning, twisting, and twining
Apparatus and processes
Monitor and control
57100, 57332, D01H 792, D02G 106
Patent
active
053699459
ABSTRACT:
A method and apparatus for controlling a false twist texturing machine, which extends the previously known process for controlling operation during the normal operation of the machine, to exceptional operating conditions, such as during yarn thread-up and/or restarting after a temporary stoppage of operation by reason of a power failure. In accordance with the invention, the known method which includes control of the frictional force imparted to the yarn as a function of the yarn tension, is modified in such a manner that during periods other than normal operation, the control of the frictional force as a function of the yarn tension is terminated, and a predetermined frictional force is imparted to the yarn.
REFERENCES:
patent: 3791128 (1974-02-01), Landwehrkamp et al.
patent: 3842578 (1974-10-01), Schippers
patent: 4015414 (1977-04-01), Sholly
patent: 4248038 (1981-02-01), Takai
patent: 4339915 (1982-07-01), Dammann et al.
patent: 4720702 (1988-01-01), Martens
patent: 4896407 (1990-01-01), Haynes
patent: 4961308 (1990-10-01), Braxmeier
patent: 5146739 (1992-09-01), Lorenz
Lorenz Hellmut
Neumann Bernd
Wessolowski Bernd
Barmag AG
Stodola Daniel P.
Strysewski William
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