Method and apparatus for measuring the linear density of a travelling fiber sliver
US4302968A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Oct 15, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H5/42
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The method is used for producing measuring values depending on the linear density of a fiber sliver transported through a measuring funnel. A measuring signal transmitted from the measuring funnel is transformed into a proportional electric voltage signal and is continually integrated. The apparatus comprises a measuring funnel connected pneumatically with a pneumatic/electric transducer which transmits a signal to an integration circuit means. A control logic which cooperates with a gear of the transmission of the spinning preparatory machine is connected with the integrating circuit means via a proximity initiator which transmits an impulse to the control logic at each passage of a tooth. The integrating circuit means supplies measuring values suitable as a control signal for spinning preparatory machines, which signal is independent of the speed of the fiber sliver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.