CH340175A

CH340175A - Apparatus for making butt cigarettes

Info

Publication number: CH340175A
Authority: CH
Inventors: Walter Molins Desmond
Original assignee: Molins Machine Co Ltd
Priority date: 1956-03-07
Filing date: 1957-03-05
Publication date: 1959-07-31

Description

Appareil pour la fabrication de cigarettes ä bouts La presente Invention a pour objet un appareil pour la fabrication des cigarettes ä bouts du type obtenu en associant des groupes, dont chacun est compose d'un bout dispose entre deux cigarettes, au moyen dune Bande de liaison enveloppant les parties ä assembler et fixee ä ces dernieres. The subject of the present invention is an apparatus for the manufacture of cigarette ends of the type obtained by associating groups, each of which is composed of a end placed between two cigarettes, by means of a connecting strip. wrapping the parts to be assembled and fixed to them.

Le terme bout employe !ei, doit etre compris comme etant un element ayant la longueur desiree convenant ä la cigarette terminee ou deux fois cette longueur, ce bout pouvant eire en matiere filtrante, en forme de tube creux ou de cylindre, ou en toute matiere appropriee, meme en tabac different du ta- bac contenu dans 1e reste de la cigarette, ou bien encore, etre constitue par une combinaison de tels filtre, tube ou matiere appropriee. Comme exemple bien connu de bouts, an peut mentionner les bouts filtrants destines ä filtrer la fumee. Les bouts sont souvent etablis ä partir d'un tampon en papier plie ou chiffonne dispose ä 1'interieur d'un e1ement d'en- veloppe. The term used tip! ei, must be understood as being an element having the desired length suitable for the finished cigarette or twice this length, this tip being able to be in filtering material, in the shape of a hollow tube or cylinder, or in any material suitable, even in tobacco different from the tobacco contained in the rest of the cigarette, or alternatively, be constituted by a combination of such filter, tube or appropriate material. As a well-known example of tips, one can mention filter tips for filtering smoke. Ends are often made from a folded or crumpled pad of paper placed inside an envelope member.

Les longueurs de boudins de cigarettes roules susceptibles d'etre reunies ä des bouts et presentant chacune une longueur convenable pour former une eigarette independante ä bout seront appe1ees ei-apres cigarettes . The lengths of rods of rolled cigarettes capable of being joined at ends and each having a suitable length to form an independent eigarette with end will be referred to as cigarettes.

L'expression bout de longueur double doit etre comprise comme couvrant un bout dont la longueur est 1e double de celle requise pour une cigarette unique ä bout. The term double-length tip is to be understood as covering a tip whose length is twice that required for a single-ended cigarette.

Conformement ä la presente Invention, 1'appareil qui en fait 1'objet est caracterise par un dispositif pour assurer la venue en contact d'un groupe com- pose d'un bout dispose entre deux cigarettes et pour faire avancer ce groupe dans 1e sens longitudinal, ce dispositif comprenant des moyens pour assembler ce groupe, des moyens pour faire avancer ce groupe dans 1e sens longitudinal, des moyens de poussee venant en prise avec la surface arriere du bout formant partie du groupe, des moyens pour retarder 1'avancement de la cigarette menante du groupe de maniere que les moyens de poussee puissent, en agissant Sur 1e bout, amener ä un emplacement d & termine la cigarette menante ä un moment donne du cycle de fonctionnement des moyens d'assem- blage, des moyens d'avancement fonctionnant apres cette mise en place de la cigarette menante de ma- niere ä faire avancer cette derniere ä une vitesse donnee et des moyens pour repousser la cigarette arriere et 1e bout vers la cigarette menante convena- blement mise en place et pour maintenir ces parties en prise longitudinale l'une avec 1'autre pendant 1'avancement provoque par ces derniers moyens d'avancement. In accordance with the present invention, the apparatus which is the subject of it is characterized by a device for ensuring the coming into contact of a group composed of one end placed between two cigarettes and for causing this group to advance in the opposite direction. longitudinal, this device comprising means for assembling this group, means for advancing this group in the longitudinal direction, pushing means engaging the rear surface of the end forming part of the group, means for delaying the advancement of the leading cigarette of the group so that the pushing means can, by acting on the end, bring the leading cigarette to a location where it ends at a given time in the operating cycle of the assembly means, the means for advancement operating after this placement of the lead cigarette so as to cause the latter to advance at a given speed and means for pushing the rear cigarette and the end towards the suitably placed lead cigarette and for holding these parts in longitudinal engagement with each other during the advancement caused by these latter advancement means.

Le dessin annexe represente, ä titre d'exemple, une forme d'execution de 1'appareil conforme ä 1'in- vention. The appended drawing shows, by way of example, one embodiment of the apparatus according to the invention.

La fig. 1 est une vue en plan de 1'appareil. fig. 1 is a plan view of the apparatus.

Les fig. 2 ä 7 inclusivement sont des vues sche- matiques en plan fäisant apparaitre les Stades suc- cesssifs du fonctionnement de 1'appareil. Figs. 2 to 7 inclusive are schematic plan views showing successive stages in the operation of the apparatus.

La fig. 8 est une vue en elevation par 1'avant avec parties en coupe. fig. 8 is a front elevational view with parts in section.

L'appareil represente au dessin comprend une Bande ou courroie transporteuse 1 destinee ä en- trainer des cigarettes 2 ä des intervalles determines dans 1e sens longitudinal, ce deplacement se faisant dans la direction de la fleche. La courroie trans- porteuse 1 passe Sur un galet 3 (fig. 8) et une plaque fixe 4 ä 1'avant du galet seit ä porter les cigarettes et les bouts provenant de la courroie transporteuse. Un dispositif de Liaison ou d'assemblage comprenant un tambour d'aspiration 5 est utilise pour appliquer des bandes adhesives de Liaison sur les surfaces cy- lindriques des groupes constitues par des cigarettes et par des bouts, de maniere ä permettre leur assem- blage. Le tambour d'aspiration est dispose de fagon ä entrainer les bandes de Liaison ou d'assemblage 1e long de sa peripherie ä intervalles reguliers et ä tourner ä une vitesse constante. Ainsi, il est neces- saire de faire en sorte que chaque groupe, compre- nant un bout et deux cigarettes ä assembler ä ce bout, soit amene par-dessus la plaque 4 sur la surface superieure du tambour d'aspiration 5 ä un moment bien regle par rapport ä 1'alimentation en bandes de Liaison, de teile sorte que ces dernieres puissent etre appliquees dans la position voulue par rapport aux cigarettes et aux bouts. The apparatus shown in the drawing comprises a band or conveyor belt 1 intended to carry cigarettes 2 at determined intervals in the longitudinal direction, this movement taking place in the direction of the arrow. The conveyor belt 1 passes over a roller 3 (Fig. 8) and a fixed plate 4 in front of the roller serves to carry the cigarettes and the ends coming from the conveyor belt. A bonding or assembly device comprising a suction drum 5 is used to apply adhesive bonding strips to the cylindrical surfaces of the groups of cigarettes and stubs so as to enable their assembly. The suction drum is arranged to drive the binding or joining strips along its periphery at regular intervals and to rotate at a constant speed. Thus, it is necessary to arrange that each group, comprising a stub and two cigarettes to be assembled at this stub, be brought over the plate 4 onto the upper surface of the suction drum 5 at a certain time. well regulated with respect to the supply of binding strips, so that the latter can be applied in the desired position with respect to the cigarettes and the ends.

Un disque 6 presentant une jante concave est dispose au-dessus du tambour d'aspiration 5 et peut tourner ä une vitesse peripherique egale ä celle du tambour. A disk 6 with a concave rim is arranged above the suction drum 5 and can rotate at a peripheral speed equal to that of the drum.

Une autre bande ou courroie transporteuse 7 cooperant avec un autre disque 7a est disposee de maniere ä assurer la continuation ä la meme vitesse du mouvement des cigarettes et des bouts auxquels des bandes de Liaison ou d'assemblage ont ete ap- pliquees et ä les faire passer par des dispositifs de pliage et de chauffage servant ä rabattre les bandes de Liaison de part et d'autre des groupes assemb1es et ä les fixer. Another band or conveyor belt 7 cooperating with another disk 7a is arranged so as to ensure the continuation at the same speed of the movement of the cigarettes and of the ends to which binding or assembly bands have been applied and to make them pass through folding and heating devices serving to fold the connecting strips on either side of the assembled groups and to fix them.

Le dispositif d'amenee des bouts comprend un dispositif non represente amenant les bouts doubles S sous 1'action d'un jet d'air, 1e Ion- d'un guidage 8 (fig. 1) permettant ä ces bouts d'etre repousses chacun ä son tour par 1e poussoir 9 qui les fait avancer suivant 1e trajet en arc de cercle 10 et pe- n6trer dans 1'intervalle separant deux cigarettes sur la courroie 1, apres quoi 1e poussoir repousse 1e bout contre 1'extremite arriere de la cigarette me- nante dans 1e groupe ä deux cigarettes. The device for supplying the ropes comprises a device, not shown, bringing the double ropes S under the action of a jet of air, the length of a guide 8 (fig. 1) allowing these ropes to be pushed back each in turn by the pusher 9 which causes them to advance along the arcuate path 10 and enter the gap separating two cigarettes on the belt 1, after which the pusher pushes the tip against the rear end of the leading cigarette in the two-cigarette group.

Comme an 1e voit sur la fig. 1, trois poussoirs 9 sont prevus, chaque poussoir etant monte ä arti- culation sur un bras 11 articule lui-meme en 12 sur un disque tournant 13. Chaque bras 11 porte un galet de came 14 se depla@ant le long du bord dune came fixe 15. Chaque poussoir 9 comprend un ta- Ion 16 portant un RTI ID="0002.0279" WI="8" HE="4"LX="591" LY="2204"> galet 17 repousse par un res- sort 18 au. contact dune came plane 19 fixee au disque 13. La came fixe 15 presente une partie en saillie 19 servant ä faire basculer vers 1'exterieur les bras successifs 11. Ce basculement se produit lorsqu'un poussoir vient de passer au-delä de 1a position de poussoir representee en 9a en fig. 1. L'effet de ce basculement du bras 11 consiste en ce que 1e poussoir est repousse vers 1'exterieur par rapport au centre du disque de maniere ä continuer ä se deplacer sur une trajectoire rectiligne pendant que 1e disque continue ä tourner. Le bras 11 etant projete vers 1'exterieur de la maniere decrite, 1e poussoir et son talon vus sur la fig. 1 tournent dans 1e sens contraire ä celui des aiguilles dune montre parce que 1e deplacement du poussoir oblige 1e galet 17 ä se deplacer 1e long de la came plane 19. Cette derniere est disposee suivant un angle tel que la rotation quelle applique au pous- soir articu1e maintient la partie utile du poussoir dans un plan ä peu pres parallele ä la face arriere du bout avec lequel il est en prise et qu'il repousse. As seen in fig. 1, three tappets 9 are provided, each tappet being pivotally mounted on an arm 11 which is itself articulated at 12 on a rotating disc 13. Each arm 11 carries a cam follower 14 moving along the edge of a fixed cam 15. Each pusher 9 comprises a tab 16 carrying an RTI ID="0002.0279" WI="8" HE="4"LX="591" LY="2204"> roller 17 pushed back by a spring 18 to. contact of a planar cam 19 fixed to the disc 13. The fixed cam 15 has a projecting part 19 serving to tilt the successive arms 11 outwards. pusher shown at 9a in fig. 1. The effect of this tilting of the arm 11 is that the pusher is pushed outward relative to the center of the disc so as to continue to move in a straight path while the disc continues to rotate. The arm 11 being projected outwards in the manner described, the pusher and its heel seen in FIG. 1 rotate counter-clockwise because movement of the tappet forces roller 17 to move along flat cam 19. articulated maintains the useful part of the pusher in a plane approximately parallel to the rear face of the end with which it engages and which it pushes back.

Au-dessus de la plaque 4 se trouve un patin 20 que 1'on n'a pas represente sur la fig. 1 pour plus de clarte et que Fon a represente schematiquement en fig. 2 et 3 et plus completement en fig. B. Le patin est articule en 25 et est repousse legerement par 1e ressort 26 de maniere ä tourner legerement autour de son pivot 25. Le patin 20 est dispose ä une distance appropriee au-dessus de la plaque 4 de teile sorte qu'une cigarette passant entre la plaque et 1e patin est legerement saisie par cette plaque et par ce patin, ce qui retarde son avancement s'il West pas repousse mecaniquement vers 1'avant au-dessus de la plaque 4. C'est pourquoi le deplacement de la cigarette menante d'un groupe est commande et regle par 1e poussoir 9 qui, apres avoir pousse un bout au contact de 1'extremite arriere dune cigarette continue ä se deplacer sur une trajectoire rectiligne comme decrit ci-dessus et cela en repoussant par 1'inter- mediaire du bout la cigarette menante vers 1'avant en surmontant la rAistance de frottement de la pla- que 4 et du patin 20. Above the plate 4 is a pad 20 which 1'on has not shown in FIG. 1 for greater clarity and which Fon represented schematically in fig. 2 and 3 and more completely in fig. B. The slider is articulated at 25 and is slightly pushed back by the spring 26 so as to rotate slightly around its pivot 25. The slider 20 is placed at a suitable distance above the plate 4 so that a cigarette passing between the plate and the pad is slightly gripped by this plate and by this pad, which delays its advancement if it is not pushed mechanically forwards above the plate 4. This is why the displacement of the leading cigarette of a group is controlled and regulated by the pusher 9 which, after having pushed one end into contact with the rear end of a cigarette, continues to move on a rectilinear trajectory as described above and this by pushing back through the intermediate the end of the cigarette leading forwards overcoming the frictional resistance of the plate 4 and the shoe 20.

Le talon 27 du patin 20 est maintenu par 1e res- sort 26 au contact de la came 28. La rotation de la came oblige 1e patin ä se soulever lorsque la cigarette menante d'un groupe a passe sous lui de teile sorte qu'il libere la cigarette suivante avec son bout. Heel 27 of slider 20 is held by spring 26 in contact with cam 28. Rotation of the cam forces the slider to rise when the leading cigarette of group a passes beneath it so that releases the next cigarette with its end.

La vitesse des poussoirs 9RTI ID="0002.0554" WI="5" HE="4" LX="1612" LY="1749"> est inferieure ä celle de la courroie 1, mais est egale ä la vitesse peri- ph6rique du tambour d'aspiration 5 et 1e fonction- nement dans 1e temps des poussoirs est lie ä 1'ecar- tement des bandes de Liaison portees ä la surface du tambour. Ainsi la cigarette menante et 1e bout for- mant partie d'un groupe sont repousses vers 1'avant par 1e poussoir 9 au moment voulu par rapport au fonctionnement du tambour 5, tandis que la plaque 4 et 1e patin 20 retardent le deplacement de la ciga- rette menante de teile maniere que celle-ci puisse eire rnise en place convenablement par 1e poussoir agissant sur eile par 1'intermediaire du bout. The speed of the pushers 9RTI ID="0002.0554" WI="5" HE="4" LX="1612" LY="1749"> is lower than that of the belt 1, but is equal to the peripheral speed of the suction drum 5 and the operation over time of the pushers is linked to the spacing of the connecting strips carried on the surface of the drum. Thus the leading cigarette and the end forming part of a group are pushed forwards by the pusher 9 at the desired time with respect to the operation of the drum 5, while the plate 4 and the first shoe 20 delay the movement of the cigarette. Leading cigarette in such a way that it can be properly positioned by the pusher acting on it via the tip.

Ort a represente aux fig. 2, 3 et 4, 1e deplace- ment vers 1'avant d'un bout et de la cigarette pre- c6dant ce dernier sous 1'action du poussoir 9. Ort has represented in figs. 2, 3 and 4, the forward movement of one end and the cigarette preceding the latter under the action of the pusher 9.

Ces figures font comprendre comment le pous- soir se retire progressivement du contact avec 1e bout tout en demeurant parallele ä la face arriere de ce bout. Les memes figures representent, apres la mise en place d'un bout dans 1'intervalle entre deux cigarettes, 1'avancement de la cigarette ar- riere R entrdnee par la courroie transporteuse 1, cette derniere avan@ant plus vite que 1e poussoir 9 de maniere ä amener la cigarette arriere aussi pres du bout S que 1e permet 1'6paisseur du poussoir 9. These figures show how the plunger progressively withdraws from contact with the tip while remaining parallel to the rear face of this tip. The same figures represent, after the placement of a tip in the gap between two cigarettes, the advancement of the rear cigarette R entered by the conveyor belt 1, the latter advancing faster than the pusher 9 so as to bring the rear cigarette as close to the end S as the thickness of the pusher 9 allows.

Sur la fig. 5, 1e poussoir est represent6 comme completement sorti du trajet des cigarettes et des bouts. A ce moment, la cigarette arriere du groupe peut Ure amenee au contaet du bout. De plus, lorsqu'on arrive ä ce Stade, la cigarette avant est saisie entre 1e tambour d'aspiration 5 et 1e disque associe 6, de telle sorte que cette cigarette avance d6sormais ä la meme vitesse que celle correspondant ä son deplacement ant6rieur sous 1'action du pous- soir 9 agissant par 1'interm6diaire du bout. Ainsi, bien qu'il n'y ait pas eu d'interruption dans 1'avan- cement de la cigarette menante, 1e bout se trouve momentanement libre de toute action provoquant son deplacement vers 1'avant du fait qu'il se trouve ä ce moment au repos Sur la plaque 4 et que son mouvement ult6rieur vers 1'avant ne peut etre assur6 que par la cigarette arriere. In fig. 5, the pusher is represented as completely out of the path of the cigarettes and the tips. At this time, the rear cigarette of the group can be brought into contact with the end. Moreover, when this Stage is reached, the front cigarette is gripped between the suction drum 5 and the associated disk 6, so that this cigarette now advances at the same speed as that corresponding to its previous displacement under 1 the action of pusher 9 acting through the tip. Thus, although there has been no interruption in the advancement of the lead cigarette, the tip is momentarily free from any action causing it to move forward by virtue of being at the this moment at rest On plate 4 and that its subsequent forward movement can only be ensured by the rear cigarette.

Un Segment de cylindre 21 repr6sent6 en fig. 1 en traits mixtes, comme aussi Sur les fig. 6 et 7, est dispos6 au-dessus de la plaque 4 et sa periph6rie utile est recouverie dune maniere appropri6e telle que du caoutchouc mousse qui lui permet de venir en prise avec frottement au contact de la surface cylin- drique de la cigarette arriere en faisant avancer cette derniere plus vite que la vitesse ä laquelle la ciga- rette menante se d6place sous 1'action du tambour d'aspiration 5 et du disque 6 et egalement plus vite que la courroie transporfeuse. Par suite, la cigarette arriere d'un groupe est soumise ä 1'action du Segment de cylindre 21 aussit6t apres que 1e poussoir West plus au contact d'un bout, de telle Sorte qu'il est repouss6 librement vers 1'avant de maniere ä fermer 1'intervalle qui 1e separe du bout en meme temps qu'il repousse ledit bout au contact de 1'extr6mit6 arriere de la cigarette menante en supprimant ainsi tout 1'espace vide qui peut s'etre form6 momenta- n6ment entre la cigarette menante et 1e bout. A cylinder segment 21 represented in fig. 1 in phantom, as also in FIGS. 6 and 7, is arranged above the plate 4 and its useful periphery is covered in a suitable manner such as foam rubber which allows it to come into frictional engagement in contact with the cylindrical surface of the rear cigarette making advancing the latter faster than the speed at which the leading cigarette moves under the action of the suction drum 5 and the disc 6 and also faster than the conveyor belt. As a result, the rear cigarette of a group is subjected to the action of the Cylinder Segment 21 immediately after the plunger is no longer in contact with one end, so that it is pushed freely forwards in a manner to close the gap which separates it from the tip at the same time as it pushes said tip into contact with the rear end of the leading cigarette, thus eliminating any empty space which may have momentarily formed between the cigarette lead and 1st end.

L'avancement de la eigarette arriere sous 1'action du segment de cylindre 21 continue jusqu'au mo- ment oü cette cigarette a penetr6 entre 1e tambour 5 et 1e disque 6. Bien que 1e Segment de cylindre ait une tendance ä faire avancer la cigarette arriere ä une vitesse sup6rieure ä la vitesse requise afin de lui permettre de rattraper d'abord 1e bout et de produire la venue au contact l'une de 1'autre des parties du groupe, cependant, lorsque cette venue au contact a 6t6 assur6e, la vitesse du groupe est determinee par le dispositif d'entrainement constitu6 par 1e tambour 5 et 1e disque 6 et 1e Segment de cylindre 21 glisse Sur la cigarette arriere. The advancement of the rear cigarette under the action of the cylinder segment 21 continues until the moment when this cigarette has penetrated between the drum 5 and the disc 6. Although the cylinder segment has a tendency to advance the cigarette backwards at a speed greater than that required to enable it to first catch the end and cause the group parts to come into contact with one another, however, when such contact has been assured , the speed of the group is determined by the driving device constituted by the first drum 5 and the first disc 6 and the first cylinder segment 21 slides on the rear cigarette.

Les diff6rents Stades dkrits ci-dessus sont re- presentes sch6matiquement Sur les fig. 2 ä 7. Sur la fig. 2, an voit 1e bout S au moment oü le poussoir 9 1'introduit dans 1'intervalle s6parant la cigarette me- nante L de la cigarette arriere R d'un groupe. En fig. 3, an a represente 1e poussoir repoussant 1e bout au contact de 1'extr6mit6 avant L de maniere ä faire passer cette derniere par 1'interm6diaire du bout par-dessus la plaque 4, et au-dessous du pa- tin 20 qui se trouve dans sa position basse, la plaque et 1e patin agissant de maniere ä former un frein retardant par frottement 1e mouvement de la lon- gueur L. En fig. 4, an a represent6 la cigarette I, au moment oix eile vient de p6n6trer entre 1e tambour 5 et 1e disque 6 tandis que 1e poussoir 9 se d6gage progressivement. The different Stages described above are represented schematically in Figs. 2 to 7. In fig. 2, an sees the end S at the moment when the pusher 9 introduces it into the interval separating the leading cigarette L from the rear cigarette R of a group. In fig. 3, an a represents the pusher pushing the tip into contact with the front end L so as to cause the latter to pass through the intermediary of the tip above the plate 4, and below the shoe 20 which is in its low position, the plate and the slider acting so as to form a brake retarding by friction the movement of the length L. In fig. 4, an has represented the cigarette I, at the moment when it has just penetrated between the first drum 5 and the first disc 6 while the first pusher 9 gradually disengages.

En fig. 5, 1e poussoir est represent6 comme d6 gag6 par rapport au groupe tandis que la cigarette menante L est entrain6e vers 1'avant par 1e tam- bour 5 et 1e disque 6 et, ä ce moment, 1e bout S Wavance plus du tout bien que, pour plus de sim- plicit6, an n'a pas repr6sent6 1'intervalle qui 1e s6pare de la cigarette menante L. In fig. 5, the pusher is represented as disengaged with respect to the group while the leading cigarette L is driven forward by the drum 5 and the disc 6 and, at this moment, the end S W no longer advances at all although , for simplicity, an has not represented the interval which separates it from the leading cigarette L.

La fig. 6 repr6sente en traits mixtes 1e secteur cylindrique 21 occupant maintenant sa position de fonctionnement en prise avec la cigarette arriere R pour lui faire subir une acc616ration 1'amenant dans la position repr6sent6e pour laquelle elle est au contact de 1'extremit6 arriere du bout. fig. 6 shows in broken lines the first cylindrical sector 21 now occupying its operating position in engagement with the rear cigarette R to make it undergo an acceleration bringing it into the position represented for which it is in contact with the rear end of the tip.

La fig. 7 correspond au Stade au cours duquel la cigarette arriere R penetre dans 1'intervalle sepa- rant 1e tambour 5 du disque 6 pour etre entrainee par ces organes. fig. 7 corresponds to the Stage during which the rear cigarette R enters the interval separating the drum 5 from the disc 6 to be driven by these members.

Lorsque les cigarettes et 1e bout au contact 1'un de 1'autre quittent la plaque 4, ils viennent pro- gressivement en prise avec une Bande adh6sive ser- vant ä la liaison des diffdrents 616ments et entramee ä la surface du tambour d'aspiration 5 pour que 1e disque 6 applique cette Bande Sur les cigarettes et les bouts en les faisant adh6rer aux surfaces inf6- rieures de ces dernieres. When the cigarettes and the end in contact with each other leave the plate 4, they gradually come into engagement with an adhesive strip serving to bind the various elements and drawn into the surface of the suction drum. 5 so that the disc 6 applies this strip to the cigarettes and the ends by making them adhere to the lower surfaces of the latter.

Un d6placement ult6rieur vers 1'avant du groupe ainsi assemb16 est assur6 par la courroie transpor- teuse 7 et la Bande adh6sive est ensuite enroul6e et fix6e autour du bout et des extr6mit6s en regard > des cigarettes pour former un ensemble unitaire. Ce dernier est alors subdivise par une coupe trans- versale du bout de maniere ä donner naissance ä deux cigarettes ä bout. Further forward movement of the group thus assembled is ensured by the conveyor belt 7 and the adhesive tape is then wound and fixed around the tip and the opposite ends of the cigarettes to form a unitary assembly. The latter is then subdivided by a cross-section of the butt so as to give rise to two butt cigarettes.

0n a constate qu'il 6tait avantageux d'effectuer la progression dans 1e temps de la cigarette menante au moyen (Tun poussoir agissant directement Sur 1e bout plutät que d'utiliser un poussoir agissant direc- tement Sur une cigarette, 6tant donnd que 1e bout est plus difficilement d6form6 que 1'extremite dune cigarette, et de plus la surface terminale du bout en prise avec 1e poussoir 9 ne se voit pas Sur la cigarette termin & et, par suite, toute Mormation ou marquage de cette derniere surface par 1e pous- soir n'a pas d'effet sur 1'aspect de la cigarette. It has been found advantageous to effect the timing of the leading cigarette by means of a pusher acting directly on the tip rather than using a pusher acting directly on a cigarette, since the tip is more difficult to deform than the end of a cigarette, and moreover the end surface of the end in engagement with the pusher 9 is not visible. - evening has no effect on the appearance of the cigarette.

Claims

CLAIM Apparatus for the manufacture of stub cigarettes, characterized by a device for ensuring the coming into contact of a group composed of a stub disposed between two cigarettes and for advancing this group in the longitudinal direction, this device comprising means for assembling this group, means for advancing this group in the longitudinal direction, pushing means engaging the rear surface of the tip forming part of the group, means for retarding the advancement of the leading cigarette of the group, so that the pushing means can, by acting on the end, bring the leading cigarette to a determined location at a given time in the operating cycle of the assembly means, advancement means operating after this positioning of the leading cigarette so as to cause the latter to advance at a given speed and means for pushing the rear cigarette and the end towards the suitably positioned leading cigarette and for maintaining these parts in longitudinal engagement with each other during the advancement caused by the latter advancement means. SUB-CLAIMS 1. Apparatus according to claim, characterized by the fact that the means capable of delaying the advancement of the leading cigarette of the group are constituted by two fixed surfaces between which the leading cigarette advances under the action of the tip.

2. Apparatus according to claim, characterized in that the pushing means are capable of being withdrawn from the operating position in which they act on the tip as soon as the leading cigarette has been brought into place in such a way. allow the rear cigarette to be brought into longitudinal contact with this tip.

3. Apparatus according to claim, characterized in that the advancing means comprises a pair of rotating members capable of gripping and advancing the leading cigarette.

4. Apparatus according to claim and sub-claim 3, characterized in that one of the rotating members is constituted by a member carrying adhesive strips forming part of the assembly means.

5. Apparatus according to claim, characterized by the fact that the means, pushing the rear cigarette and the end towards the location determined by the leading cigarette, comprise a cylindrical sector whose useful surface is in engagement with the cylindrical surface of the rear cigarette, while advancing at a speed greater than the forward speed of the leading cigarette under the action of its advancing means, this useful surface being liable to slip by<RTI ID="0004.0277 " WI="12" HE="4" LX="1499" LY="742"> compared to the rear cigarette.

6. Apparatus according to claim, characterized in that the pushing means are incorporated in the means for advancing a tip in the gap separating the two cigarettes of a group.

7. Apparatus according to claim and sub-claim 6, characterized by the fact that the pushing means comprise a pusher mounted on a rotating member and capable of coming into engagement with an end and causing it to advance along an arcuate path of circle to enter this gap between the two cigarettes. B. Apparatus according to claim, in which the device for advancing the end comprises a rotating member on which is articulated an arm carrying a pusher and a cam capable of tilting this arm and thus causing the pusher to advance towards the outside and towards the inside with respect to the axis of rotation of this rotating member, characterized by the fact that the pusher is articulated on this arm and that a second cam forces the pusher to rotate with respect to this arm when this last rocker, in such a way to maintain parallelism between the plunger and the rear face of the tip moving along a straight path.