Textiles: fiber preparation – Working – Drafting
Patent
1978-04-25
1980-04-29
Hix, L. T.
Textiles: fiber preparation
Working
Drafting
57 81, D01H 542
Patent
active
041998448
ABSTRACT:
The draft imparted to sliver during regular operation of a sliver drafting apparatus is correctively varied in proportion to uniformity variations then detected in the sliver. During at least part of each period of start-up of the apparatus, the sliver is subjected to a prescribed correction draft approximately equal to an average of the draft corrections applied to the sliver over a relatively long time interval during the last-ensuing regular operation of the apparatus. During that initial part of each start-up period required for the apparatus to accelerate to substantially full operating speed, the prescribed correction draft is either not applied or, alternatively, is scaled in proportion to the speed of the apparatus. Preferably the correction draft applied to the sliver during transition from start-up to regular operation of the apparatus is approximately equal to the sum of the prescribed correction draft applied during the start-up period, and any additional correction draft resulting from uniformity variations then detected in the sliver.
REFERENCES:
patent: 2812553 (1957-11-01), Coulliette
patent: 3435673 (1969-04-01), Felix
patent: 3673591 (1972-01-01), Schwartz
patent: 3723991 (1973-03-01), Schwartz
patent: 3744093 (1973-07-01), Felix
patent: 3822590 (1974-07-01), Tharpe
patent: 3829751 (1974-08-01), Bottone
patent: 3869759 (1975-03-01), Savageau
patent: 3992865 (1976-11-01), Tuchida
patent: 4109450 (1978-08-01), Yoshida
Platt Saco Lowell Instruction Manual, 1st Edition, Versamatic Model DF Type 746, 7-77.
Heard Joseph H.
Hix L. T,.
Platt Saco Lowell Limited
Schneyer S. D.
LandOfFree
Method and means for regulating sliver draft uniformity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and means for regulating sliver draft uniformity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for regulating sliver draft uniformity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1678350