Apparatus and method to sense and adjust the relative position o

Details Apparatus and method to sense and adjust the relative position o Apparatus and method to sense and adjust the relative position o

1977-03-29

1978-05-02

Coan, James F.

A24C 550

Patent

active

040868460

ABSTRACT:
The sensing and correcting apparatus is employed in a machine for making cigarette filter rods containing hollow tubes on a continuous in line basis. The apparatus senses the position of the hollow tubes in a stream of tow and corrects the insertion position of subsequent hollow tubes if the position of the inserted tubes does not coincide with the proper cutting position. Sensing is accomplished by measuring the density of the moving stream and generating a position signal in response for comparison with a reference signal generated on cutting of a filter rod. If there is a difference exceeding acceptable tolerance limits, the comparison means generates a correction signal which is delivered to a timing assembly in the transmission for inserting the hollow tubes.

REFERENCES:
patent: 3259029 (1966-07-01), Hall et al.
patent: 3380351 (1968-04-01), Cox et al.
patent: 4037524 (1977-07-01), Hall
patent: 4043454 (1977-08-01), Reuland

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