Opening cylinder for open-end spinning machines

Details Opening cylinder for open-end spinning machines Opening cylinder for open-end spinning machines

1986-07-07

1989-01-17

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

19 97, 19105, 19112, D01H 7895, D01G 914, D01G 1520, D01G 1526

Patent

active

047980460

ABSTRACT:
The opening cylinder comprising a cylindrical ring serving as a needle support and being provided with needle-housing bores extending from the inner ring surface to the outer one is designed to carry needles comprising a point section of generally tapered shape and a shaft section, the latter being pressed into and seated with force fit in a radially inner section of a corresponding one of said bores. A radially outer section of the bore surrounds a portion of said needle point section so as to form an annular groove therearound at the orifice of the bore in the outer ring surface. The radially inner section of the bore or at least part thereof has a diameter which is at least as great as the diameter of the outer section of the bore in the range of its orifice in the outer ring surface. This ensures having a simple and inexpensive needle mounting which a precise positioning of the needle tips protruding above the outer ring surface and with a secure holding of the needle shaft sections not only by press fit, but also by form fit connection due to the expansion of the inner bore section receiving the needle shaft section and the correspondingly lesser diameter of the outer bore section. The latter thus forms a bead or shoulder in front of the radially outer end edge of the needle shaft section establishing said form fit connection.

REFERENCES:
patent: 3737951 (1973-06-01), Mackie
patent: 4122656 (1978-10-01), Shaw
patent: 4135355 (1979-01-01), Stewart
patent: 4249286 (1981-02-01), Stalder
patent: 4530133 (1985-07-01), Stewart et al.

Affiliated with

Also associated with

Rating

Opening cylinder for open-end spinning machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Opening cylinder for open-end spinning machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Opening cylinder for open-end spinning machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2409602