Device for controlling composite cigarette filter rods

Details Device for controlling composite cigarette filter rods Device for controlling composite cigarette filter rods

1975-03-10

1977-01-04

Gilden, Leon

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

93 1C, 250227, 250572, G01D 2104

Patent

active

040015793

ABSTRACT:
Faults in a composite filter rod being supplied to a sectioning device are detected optically by traversing the rod with a beam of light supplied along a first fiber bundle and taken up and delivered to photo-detector by a second fiber bundle. The ends of the cylindrical fiber bundles are held in the configuration of narrow homothetic rectangles transverse to the direction of feed of the rod, the width of the first bundle being approximately double that of the second bundle. The photo-detector controls elimination of faulty tips after sectioning; additional pairs of fiber bundles can be used to control synchronization of cutting with feed of the rod, and the correct succession of filter elements in the rod.

REFERENCES:
patent: 2896636 (1959-07-01), Powell et al.
patent: 3334240 (1967-08-01), Black
patent: 3854587 (1974-12-01), McLoughlin

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