Method and apparatus for measuring the linear density of a trave

Measuring and testing – Sheet – woven fabric or fiber – Filament

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Details

19239, 28250, 73 377, G01B 1304, D01H 552

Patent

active

043029680

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.

REFERENCES:
patent: 3435673 (1969-04-01), Felix
patent: 3593566 (1971-07-01), Loopuyt
patent: 3710421 (1973-01-01), Tooka
patent: 4045659 (1977-08-01), Akagawa et al.
patent: 4051722 (1977-10-01), Feller
patent: 4074573 (1978-02-01), Nordhofen
patent: 4184361 (1980-01-01), Erben
patent: 4213056 (1980-07-01), Matsumura et al.

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