Textiles: fiber preparation – Working – Drafting
Patent
1985-09-16
1987-03-31
Rimrodt, Louis K.
Textiles: fiber preparation
Working
Drafting
19105, 19258, 57 93, D01H 532
Patent
active
046531530
ABSTRACT:
A rapidly reacting measuring element is used at the delivery of the drafting zone on autolevelling drawframes used in the textile industry, which makes it possible to superimpose on the signal thus obtained from the measuring element by means of an electronic system a further measurement signal at the delivery of the drawing passage and thus correct the parameters governing the drafting values in such a way that even short-term variations in cross-section of the textile material are levelled out. The critical factors here are especially the delay time T of the textile material between the correcting element (pair of drafting rollers with variable speed of rotation) and the measuring element and also the overall amplification V of the measurement signal.
REFERENCES:
patent: 3099048 (1963-07-01), Locher
patent: 4336684 (1982-06-01), Hartmannsgruber et al.
patent: 4369550 (1983-01-01), Meile
patent: 4506414 (1985-03-01), Krieger
patent: 4574433 (1986-03-01), Brunnschweiler
patent: 4589168 (1986-05-01), Krieger
Felix Ernst
Feller Peter
Olds J. L.
Rimrodt Louis K.
Zellweger Uster Ltd.
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