A - Human Necessities – 24 – C
Patent
A - Human Necessities
24
C
131/44
A24C 1/00 (2006.01) A24C 5/18 (2006.01) A24C 5/39 (2006.01)
Patent
CA 1168126
ABSTRACT OF THE DISCLOSURE An apparatus for forming a continous cut tobacco braid in a cigarette making machine, comprises: - a transfer duct (1) for transferring by means of a suitable air stream the cut tobacco from the delivery end of a cut tobacco feeder (2, 3) to an endless belt type braid forming suction tape (5); - a first pneumatic collecting duct (12, 112) which receives the tobacco ribs, from the delivery end of the tobacco feeder, and conveys them into a collecting box (13); - a second pneumatic collecting duct (22, 122) which receives the excess tobacco trimmed from the tobacco braid formed on the underside of the suction tape (5) and conveys it into the feeding hopper (103) of the tobacco feeder (2, 3); - a deflector valve (14) arranged between the first pneumatic duct (12, 112) for the tobacco ribs and the second pneumatic duct (22, 122) for the trimmed excess tobacco. The deflector valve (14) is switchable from a first position in which the tobacco ribs are conveyed through the first pneumatic duct from the delivery end of the tobacco feeder into the collecting box, and the trimmed excess tobacco is conveyed through the second pneumatic duct to the feeding hopper of the cut tobacco feeder, to a second position, in which the cut tobacco delivered by the delivery end of the cut tobacco feeder, including the tobacco ribs, is returned into the feeding hopper (103), while the suction is stopped in the duct (22) receiving the trimmed excess tobacco, and the suction is also stopped in the duct (112) leading to the tobacco ribs collecting box (13); - sensor means (27, 28) arranged at the interior of the tobacco transfer duct (1), sensitive to the formation of tobacco obstructions and operatively associated with a control circuit for switching the deflector valve (14) and for interrupting the air stream at the interior of the transfer duct (1).
390314
Sasib S.p.a.
Swabey Ogilvy Renault
LandOfFree
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