Web former having stop motion control

Details Web former having stop motion control Web former having stop motion control

1978-03-20

1980-08-26

Rowland, James L.

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of load input or output

250231SE, 318480, B65G 5366

Patent

active

042192889

ABSTRACT:
A web former for a textile card or the like in which fibers in an air stream are delivered into a housing divided by a perforated plate into two chambers. The fibers fall to the bottom of one chamber and are formed into a web by three rollers. The plate is shaken by a motor to avoid build-up of fibers at the perforations and ensure that the fibers fall. A disc having sixty radial black bars is mounted for rotation on one roller to periodically interrupt the path between a light source and phototransistor to produce a pulse train which is applied to a counter and a monostable multi-vibrator. A logic flip-flop connects the counter and multivibrator to a relay controlling the shaker motor for delaying turning on the motor until the counter reaches a predetermined count but turning off the motor when the multi-vibrator times out.

REFERENCES:
patent: 3725665 (1973-04-01), Talmo
patent: 3814934 (1974-06-01), Mesh et al.
patent: 3845375 (1974-10-01), Stiebel
patent: 3963919 (1976-06-01), Sells
patent: 4154485 (1979-05-01), Lytton et al.

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