Control device for machining webs

Details Control device for machining webs Control device for machining webs

1977-01-21

1978-03-21

Ruggiero, Joseph F.

Boots, shoes, and leggings

162262, 364105, 364116, 364474, D21F 706, G06F 1546

Patent

active

040806561

ABSTRACT:
In apparatus having at least two roll pairs and/or stretch rolls each having a driving means with an amplifier for speed control, the speed control reference for each drive is developed by summing signals developed in adjacent control circuits such as to obtain a relationship in which, for example, for the second drive the signal is V.sub.0 (1 + S.sub.1) (1 + S.sub.2) where V.sub.0 is a basic speed reference signal and S.sub.1 and S.sub.2 desired relative speed differences for first and second drives to thereby permit speed adjustments.

REFERENCES:
patent: 2922475 (1960-01-01), Alexander
patent: 3552162 (1971-01-01), Gingher, Jr. et al.
patent: 3574280 (1971-04-01), Smith, Jr.
patent: 3592031 (1971-07-01), Sutton et al.
patent: 3989935 (1976-11-01), Fay

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