Auto leveler

Textiles: fiber preparation – Working – Drafting

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

73 32R, 73160, D01H 538

Patent

active

039382230

ABSTRACT:
An apparatus for maintaining sliver thickness uniform whereby the web from a carding machine is gathered by a trumpet and passed between a grooved driven roller and a sensor roller riding in the groove so that the movements of the sensor roller vary as a function of sliver density. The sensor roller is mechanically connected to a magnetic core so that movement of the sensor roller varies the coupling between a primary transformer winding and a pair of secondary windings. The voltages induced in the secondary windings are applied, after a delay, to a first differential amplifier whose output in turn is connected to a second differential amplifier which is periodically rendered operative by a pulse generator and to which is also connected a potentiometer for adjusting desired density. The output of the second amplifier is connected to a pair of relay coils, one responsive to positive excursions and the other to negative. Each relay controls a switch connecting a power source to a motor coil for rotating the motor which in turn controls a variable speed drive for controlling, for example, the feed roll of a conventional card.

REFERENCES:
patent: 3363459 (1968-01-01), Brown
patent: 3827106 (1974-08-01), Varga
patent: 3862473 (1975-01-01), Felix et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Auto leveler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Auto leveler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auto leveler will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1739061

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.