Method and apparatus for controlling a card

Details Method and apparatus for controlling a card Method and apparatus for controlling a card

1975-10-29

1978-02-28

Newton, Dorsey

Textiles: fiber preparation

Working

Drafting

73 377, D01H 532

Patent

active

040757390

ABSTRACT:
A pneumatic measuring means is placed over the main cylinder to measure pressure variations due to changes in fiber layer thickness. The measured pressures are transmitted to a measuring and control means which compares the measured pressures to a pre-set value and produces a difference signal which is then used to control the card. The difference signal can be imposed on the supply means for the card, the doffing means or the drafting means.

REFERENCES:
patent: 3108332 (1963-10-01), Moss et al.
patent: 3239890 (1966-03-01), Caughlin
patent: 3256569 (1966-06-01), Draving
patent: 3754433 (1973-08-01), Hyer

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