Pneumatic conveyor for rod-shaped articles of the tobacco proces

Details Pneumatic conveyor for rod-shaped articles of the tobacco proces Pneumatic conveyor for rod-shaped articles of the tobacco proces

1990-08-15

1991-07-16

Millin, V.

Tobacco

Cigar or cigarette making

Tip or mouthpiece applying or forming

1984711, 1984731, B65G 2900, B65G 3700

Patent

active

050316435

ABSTRACT:
A rotary drum which serves to transport rod-shaped articles of the tobacco processing industry or sheet-like components of such articles has a peripheral surface which is formed with rows of axially parallel suction ports connectable to a suction generating device to attract the articles or their components to the peripheral surface of the drum. If the lengthh of rod-shaped articles is changed, or if the width of web- or strip-shaped components of articles is changed, the effective length of the rows of suction ports is changed accordingly to avoid unnecessary flow of air into non-overlapped suction ports. The effective length of the rows of suction ports is varied in response to turning of apertured tubes which are inwardly adjacent the rows of suction ports and can be jointly turned to connect the suction generating device with a first group of ports in the respective row in first angular positions of the pipes and to connect the suction generating device with second groups of suction ports in second angular positions of the pipes.

REFERENCES:
patent: 3137302 (1964-06-01), Schubert
patent: 3164242 (1965-01-01), Schubert et al.
patent: 3352404 (1967-11-01), Settembrini
patent: 3564902 (1969-02-01), Heitmann
patent: 3665930 (1972-05-01), Giatti
patent: 4154090 (1979-05-01), Heitmann
patent: 4262680 (1981-04-01), Hinzmann
patent: 4596257 (1986-06-01), Garthaffner et al.
patent: 4869274 (1989-09-01), Berger

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