Molins Plc

Norman L Sharp

John Dawson

Derek H Dyett

James R Stembridge

Michael J Cahill

Robert E Williams

Paul Davis

Alan M Aindow

Philip Gordon Haddow

A cigarette making machine comprises means for showering tobacco onto two suction bands 610,612 to form tobacco sub-streams of similar width on the respective bands which are then merged to form a cigarette filler stream, and includes rod-forming means for enclosing the cigarette filler stream in a continuous wrapper to form a continuous cigarette rod, and means for forming or feeding onto at least one of the sub-streams, or between the sub-streams as or just before they merge, a layer 628 of core-forming material which is narrower than each of the sub-streams and is centrally located in relation thereto, whereby the core-forming material is surrounded by tobacco in the finished cigarette rod. This invention also encompasses the feeding of additional dense-ending quantities of tobacco instead of a core-forming layer.

Cigarette making machine

Apparatus for conveying a paper web or other sheet material pneumatically along a predetermined path comprises two guide plates 20, 22 having outer surfaces defining successive parts of the path and having adjacent edges which are inclined to the outer surfaces and are spaced apart so as to form a slot 28 inclined to the outer surfaces of the plates, and including an air pressure manifold 26 which is secured to both guide plates and from which an air stream is arranged to be emitted through the slot to produce an air stream which will move along one of the plates 22 which is downstream of the other plate with respect to the intended direction of conveyance of the web or other sheet material. When applied to a cigarette making machine, apparatus of this general type may be used at various positions for feeding the paper web through the printer, and also to feed the web automatically all the way into the garniture 12.

Pneumatic web feeding

In a cigarette making machine, tobacco is arranged to be showered towards two suction bands to form tobacco sub-streams on the respective bands which are then merged to form a single cigarette filler stream which (possibly after trimming) is enclosed in a wrapper web to form a continuous cigarette rod, and the machine includes means for disturbing at least part of the tobacco of at least one of the tobacco sub-streams before the two sub-streams are merged. This disturbance of the sub-streams preferably causes or permits a degree of reorientation of the disturbed tobacco and a degree of interengagement between tobacco particles of the two sub-streams. In one example at least part of this disturbance is caused during the transfer of both sub-streams to a further suction band which carries the merged stream to the wrapper web.

In cigarette conveying apparatus cigarettes are conveyed along a path so that they are intercepted in sequence by beams directed at different portions of the path to produce a complete circumferential row of perforations on each cigarette after it has traversed the path. An incident laser beam (14) is time-shared to produce pulses for making perforations by mutually inclined rotatable discs (20, 28). A temperature sensor (150) is provided to detect build-up of contaminants on a lens or mirror (146) for a laser beam (32B). A stream of air containing small quantities of water is supplied by tubes (380,388) terminating in the region in which the cigarettes are perforated so as to assist removal of contaminants resulting from laser perforation.

Growing community of inventors

High Wycombe, United Kingdom

Norman L Sharp