Textiles: spinning – twisting – and twining – Apparatus and processes – Receiving twist type
Patent
1977-04-06
1978-09-26
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Receiving twist type
D02G 108
Patent
active
041159870
ABSTRACT:
Disclosed is a friction false-twisting device comprising three parallel rotatable shafts disposed at vertexes of a regular triangle and a plurality of friction discs having a yarn contacting surface made of ceramic disposed on the rotatable shafts. Each friction disc comprises a pair of parallel end surfaces, having a large distance T(mm) between the end surfaces in a range between 5 and 8 mm, a curved surface disposed at a position between said parallel end surfaces having a large radius of curvature R(mm) in a range between 5 and 8 mm and a pair of connecting surfaces formed between the end surfaces and the curved surface having a small radius of curvature r(mm) in a range between 1/6 R and 1/2 R. The surface roughness of the yarn contacting surface is formed in a range between 1.sup.s and 6.sup.s, defined by Japanese Industrial Standard. The friction discs and the shafts are arranged so that, when utilizing this false-twisting device, yarn can be false-twisted at a speed higher than 400 m/min, yarn breakages and fluffs in the textured yarn are decreased, and the yarn quality of the textured yarn is high and uniform.
REFERENCES:
patent: 3811258 (1974-05-01), Batsch
patent: 3820317 (1974-06-01), Raschle
patent: 3940914 (1976-03-01), Schuster
patent: 3964248 (1976-06-01), Schuster
patent: 3973383 (1976-08-01), Yu
patent: 3973384 (1976-08-01), Yu
patent: 4012896 (1977-03-01), Eischbach
patent: 4018041 (1977-04-01), Weigert et al.
patent: 4051655 (1977-10-01), Lorenz
Kuroda Yoji
Taniguchi Katsutoshi
Teijin Limited
Watkins Donald
LandOfFree
Friction false-twisting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Friction false-twisting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Friction false-twisting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2082017