Method of piecing yarns in a spinning machine utilizing an air s

Details Method of piecing yarns in a spinning machine utilizing an air s Method of piecing yarns in a spinning machine utilizing an air s

1983-08-08

1984-12-25

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57263, 57264, D01H 1502

Patent

active

044895445

ABSTRACT:
Yarns are pieced in a spinning machine utilizing an air stream, such as an open-end spinning machine or an air-jet spinning machine. For yarn piecing, an end of a yarn unwound from a bobbin is inserted into a twisting mechanism, and a sliver is newly supplied as a fleece so as to intertwine with the yarn end forming a pieced yarn portion. The thickness of the unwound yarn is detected by a detector and stored in a memory prior to insertion into the twisting mechanism. After the yarn and the sliver have been joined, the thickness of the pieced yarn portion is detected by the detector, and the detected thickness is compared with the stored thickness of the unwound yarn. If the thickness of the pieced yarn portion exceeds an allowable value as a result of such comparison, then the yarn is severed by a cutter, and thereafter a cut end of the yarn is pieced again with the fleece. Preferably, the sliver starts being supplied into the twisting mechanism at a timing advanced or delayed with respect to the previous timing of starting of the supply of the sliver when the yarn is to be pieced again with the fleece.

REFERENCES:
patent: 4031691 (1977-06-01), Roehrich
patent: 4083171 (1978-04-01), Konig et al.
patent: 4098066 (1978-07-01), Stahlecker
patent: 4223517 (1980-09-01), Husges et al.
patent: 4248037 (1981-02-01), Martin et al.
patent: 4295330 (1981-10-01), Pfeifer
patent: 4356692 (1982-11-01), Karl et al.
patent: 4364224 (1982-12-01), Dennings et al.
patent: 4369620 (1983-01-01), Burysek et al.

Affiliated with

Also associated with

Rating

Method of piecing yarns in a spinning machine utilizing an air s 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 of piecing yarns in a spinning machine utilizing an air s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of piecing yarns in a spinning machine utilizing an air s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1146683