Yarn tension control apparatus of the ball and funnel type

Details Yarn tension control apparatus of the ball and funnel type Yarn tension control apparatus of the ball and funnel type

1978-07-27

1980-02-05

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Clamp

242147M, 242150M, B65H 5924

Patent

active

041868986

ABSTRACT:
A ball and funnel type yarn tension control apparatus for tensioning a running length of yarn such as textile yarn or the like, wherein a plurality of tensioning devices form a controlled channel and are controlled by an electronic control circuit having a manually adjustable tension setting potentiometer for adjusting a circuit to provide output voltages to the tension devices of the channel adding selecting tension values to the yarn. The tension control devices each comprise an electromagnet coil structure and associated core structure including pole pieces adjacent one or a pair of ball and funnel tensioning stations in each tension device to exert magnetic attractive forces on the ball member and vary tensioning of the yarn leaving the yarn tension device. Degaussing circuit means are also disclosed for applying intermittent negative going pulses to the electromagnet coils during downward adjustment of the tension setting potentiometer to minimize residual magnetic effects.

REFERENCES:
patent: 1167636 (1916-01-01), Eastwood
patent: 1433495 (1922-10-01), Bishop
patent: 2907535 (1959-10-01), Mindheim et al.
patent: 3040549 (1962-06-01), Peel
patent: 3991954 (1976-11-01), Schwartz
patent: 4095757 (1978-06-01), Singer
patent: 4123014 (1978-10-01), McCullough

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