Textile machinery yarn supply apparatus
US4673139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1985 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Jul 26, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/319
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A yarn supply apparatus for yarn-using textile machinery has a rotatable yarn supply element (4) supplying yarn under slip free conditions at a predetermined tension, which is driven by a speed-controllable electric drive motor (6), the speed of which is controlled in accordance with the output signal of sensing means (7, 9) monitoring the travel speed of the yarn (11) supplied by the yarn supply element. In order to provide an apparatus which operates independently of external synchronizing means, the arrangement is such that the speed of the drive motor is synchronized with the sensing means output signal (36), which is representative of the yarn supply speed, and the sensing means (7, 9) are located at a distance behind the yarn supply element (4), as viewed in the direction of yarn travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.