Method and device for starting the operation of a friction-spinning machine unit
US4541233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | May 14, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of starting the operation of a friction spinning unit having friction surfaces displaceable in opposite directions and forming a spinning wedge, the spinning unit further having a fiber infeeding device, a thread take-up device for drawing a thread longitudinally through the spinning wedge, and at least one suction device acting upon the spinning wedge, at least one of the friction surfaces being formed by a sieve drum, the suction device having a suction nozzle acting upon the spinning wedge by sucking air through the wall of the sieve drum includes: PA1 (a) stopping the fiber infeed, and stopping the displacement of the friction surfaces; PA1 (b) stopping the flow of suction air from the spinning wedge through the wall of the sieve drum into the suction nozzle; PA1 (c) introducing into the spinning wedge through the wall of the sieve drum a suction air flow in a direction opposing the direction in which the thread is being drawn, and guiding the air flow out of the suction nozzle through the wall of the sieve drum and in a direction opposing the direction in which the thread is being drawn, along the spinning wedge, and out of the spinning wedge; PA1 (d) after a given ef…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.