Apparatus for synchronizing the speeds of two webs of goods

Details Apparatus for synchronizing the speeds of two webs of goods Apparatus for synchronizing the speeds of two webs of goods

1977-05-19

1980-01-01

Stoner, Jr., Bruce H.

Registers

Platform operated

Platform actuated traffic counters

235 92FQ, 226 30, 226111, 242 583, G06F 738, G06G 700, B65H 1916

Patent

active

041818474

ABSTRACT:
A synchronizing system for synchronizing the speeds of two webs of goods, wherein the first web runs at a constant speed and the second web has an adjustable running speed. First pulses are generated which have a frequency dependent upon the speed of the second web and a first counter is associated with the second web and is triggered by the first pulses. The first counter is also controlled to be started and stopped by at least one pair of timing marks which are running with the second web of goods. As a result of the frequency of the first pulses and the starting and stopping of the first counter, the first counter reaches a constant count upon stopping and each time the first counter is started for the next count this constant count is reached. Second pulses having a constant frequency associated with the speed of the first web are used to trigger a second counter which is started and stopped by the first counter when the constant count is reached. The count that is finally obtained in the second counter is indicative of the amount of over synchronization or under synchronization of the speed of the second web relative to the first web.

REFERENCES:
patent: 3232548 (1966-02-01), Bent et al.
patent: 3298622 (1967-01-01), Raymond et al.
patent: 3768904 (1973-10-01), Rodek
patent: 3780541 (1973-12-01), Haynes

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