Method and apparatus for stopping a flyer frame
US4095401A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1976 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Jun 2, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H13/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for stopping a flyer frame at the time a roving breakage occurs in an outer layer of any roving package during the spinning operation thereof. When such roving breakage occurs, an abnormal amount of floating flies separated from the broken end portions of the roving scatter in the space between the twisting and winding mechanisms. Such abnormal amount of flies interrupt a light beam emitted from a light emitter, disposed at a position adjacent to and outside one end of the alignment of the twisting and winding flying mechanisms, toward a light receiver, disposed adjacent to and outside, but at the other end, of said alignment. When such interruption occurs the light receiver issues a signal indicating the interruption of the light beam to a power supply relay via a particular control circuit which identifies the abnormal amount of floating flies from the usual amount of floating flies. Therefore, when the control circuit identifies the signal corresponding to the abnormal amount of floating flies, the signal issued from the light receiver actuates the power supply relay so as to stop the flyer frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.