CH369929A

CH369929A - Smoker's item

Info

Publication number: CH369929A
Application number: CH108061A
Authority: CH
Inventors: Senepart Jules-Odon De
Original assignee: Schnyder Adrien
Priority date: 1961-01-30
Filing date: 1961-01-30
Publication date: 1963-06-15

Description

Artiele pour fumeur Le conduit de fum & des articles pour fumeur connus tels que par exemple des fume-cigarette, fume-cigare et pipes s'encrasse rapidement, ce qui oblige le fumeur ä proc6der ä un nettoyage relati- vement fr6quent. Or, ce travail est fort d6sagr6able et salissant. Smoker's article The smoke pipe & known smoker's articles such as, for example, cigarette holders, cigar holders and pipes become clogged quickly, which obliges the smoker ä to proceed ä relatively frequent cleaning. However, this work is very unpleasant and dirty.

La pKsente invention a pour objet un article pour fumeur comprenant un dispositif d'6puration de la fumde dans le conduit de furn#e qui tend ä Mminer cet inconv6nient. 11 est caract#r!s6 par le fait que ce conduit pr6sente un tron#on dont la section transversale est au moins 6gale ä 25 fois la section dudit conduit et constitue une chambre de forme g#n#rale cylindrique dans Iaquelle est dispos6 un tampon en mati#re poreuse de forme correspon- dante dont les, faces d'extr6mit6 sont appliqu6es par Nlasticit# propre de la mati#re poreuse contre les parois d'extr6mit# de la chambre et 6pousent, au moins dans la r#gion sita6c ä proximit# imm6diate de l'entr#e et de la sortie du conduit, la forme des parois d'extr6mit# de ladite chambre. The subject of the pKsente invention is an article for smokers comprising a device for purifying the fumde in the flue of the furn#e which tends ä to Mminer this drawback. 11 is characterized by the fact that this duct has a section whose cross section is at least equal to 25 times the section of said duct and constitutes a chamber of generally cylindrical shape in which is placed a pad of porous material of corresponding shape, the end faces of which are applied by the inherent elasticity of the porous material against the end walls # of the chamber and match, at least in the region located ä immediately near the inlet and the outlet of the duct, the shape of the end walls of the said chamber .

Le dessin annex6 illustreä titre d'exemple trois formes d'exdcution d'un article pour fumeur selon Pinvention. The attached drawing6 illustrates by way of example three embodiments of a smoking article according to the invention.

La fig. 1 est une vue en coupe axiale d'un fume- cigarette selon la premi#re forme d'exkution. fig. 1 is an axial sectional view of a cigarette holder according to the first form of execution.

La fig. 2 en est une variante d'ex#cution. fig. 2 is an execution variant.

La fig. 3 est une vue en coupe axiale de la seconde forme d'ex6cution. fig. 3 is an axial sectional view of the second embodiment.

La fig. 4 est une vue d'un d#tail. fig. 4 is a detail view.

La fig. 5 est une vue en coupe d'une pipe selon la troisi#me forme d'exdcution. fig. 5 is a sectional view of a pipe according to the third form of execution.

Le fume-cigarette reprdsent# par la fig. 1 est compos# d'un support 1 et d'un embout 2 en un matftiau synth#tique ou naturel, fixes l'un ä Fautre de mani#re amovible, au moyen d'un accouplement qui comprend une partie' cylindrique 3 s'engageant ä frottement doux dans un logement cylindrique 4. Le support est muni d'une entr & 5 destinde ä recevoir l'extr6mit6 dlune cigarette et qui se pro- longe par un conduit 6. Ce conduit ddbouche dans une chambre 9 de forme g6n6rale cylindrique, dans Iaquelle est log6 un tampon cylindrique 7 en une mati#re poreuse. Cette chambre est constitu6e par un logement pratiqu6 partiellement dans le support 1 et partiellement dans l'embout 2. Un conduit 8 pra- tiqu6 RTI ID="0001.0273" WI="7" HE="3" LX="1183" LY="1564"> dans cet embout relie la chambre 9 ä l'extr6- mit6 arri#re de l'embout. Comm repr6sent6, les conduits 6 et8, ainsi que la chambre 9, sont co- axiaux. Les seetions de ces conduits sont de l'ordre de grandeur des sections des conduits que com- portent les fume-cigare et fume-cigarette actuelle- ment sur le march6, leur diamUre est g6n6ralement compris entre1,5 et2,5mm. Par contre, la chambre 9 d'une section nettement plus grande pr6sente un diamUre, pouvant varier de7,5 ä 12,5 mm, tandis que sa longueur a est g6n6ralement comprise entre 10 et25 Le diam#tre du tampon cylindrique 7 est Mge- rement plus petit que celui de la chambre, afin que sa mise en place par Fusager, ä l'int6rieur de cette chambre, ne pr6sente aucune diffieult6 et aussi afin qu'il dispose Jun certain espace übre qui lui per- mette de se dilater pendant Pusage. Par contre, la longueur de ce tampon est 16g#rement plus grande que celle de la chambre 9, de mani#re qu'apr#s assemblage du support 1 et de Fembout 2, comme illustr6 par la fig. 1, les deux faces frontales10 de ce tampon soient parfaitement appliqu6es 61astique- ment sur les parois dlextr6mit6 11 de la chambre 9. The cigarette holder represented by fig. 1 is made up of a support 1 and an end cap 2 in a synthetic or natural material, fixed to one ä the other in a removable manner, by means of a coupling which comprises a cylindrical part 3 engaging ä with gentle friction in a cylindrical housing 4. The support is provided an entrance to 5 intended ä to receive the end of a cigarette and which is extended by a conduit 6. This conduit emerges in a chamber 9 of generally cylindrical shape, in which is housed a cylindrical plug 7 made of a porous material. This chamber is made up of a housing made partially in the support 1 and partially in the end piece 2. A conduit 8 made RTI ID="0001.0273" WI=" 7" HE="3" LX="1183" LY="1564"> in this mouthpiece connects chamber 9 ä to the rear end of the mouthpiece. As shown, the ducts 6 and 8, as well as the chamber 9, are coaxial. The cross-sections of these ducts are of the order of magnitude of the cross-sections of the ducts found in cigar holders and cigarette holders currently on the market, their diameter is generally between1.5 and2.5mm. On the other hand, the chamber 9 with a much larger section has a diameter, which can vary from7.5 to 12.5 mm, while its length a is generally between 10 and 25 The diameter of the cylindrical tampon 7 is slightly smaller than that of the chamber, so that its installation by the user, ä inside this chamber, does not present any difficulty and also so that it has some free space to allow it to expand during use. On the other hand, the length of this buffer is slightly greater than that of chamber 9, so that after assembly of the support 1 and End piece 2, as shown in fig. 1, the two end faces10 of this buffer are perfectly elastically applied to the end walls 11 of the chamber 9.

Pour permettre la mise en place et le retrait ais6 du tampon cylindrique, le joint de s6paration entre le support et l'embout est situ6 dans un plan transversal de la chambre 9 plus proche de Fune de ses extr6mit6s que Pautre. Pour retirer un tam- pon usag6, il suffit de d6tacher Perabout 2 du sup- port 1, puis de faire tomber le tampon. Apr#s mise en place d'un tampon neuf, Fusager erubdite les deux parties du fume-cigarette Fune sur Pautre et celui-ci est de nouveau pret ä 8tre utilisd. To allow the easy installation and removal of the cylindrical tampon, the separation joint between the support and the end piece is located in a transverse plane of the chamber 9 closest to One of its extremities than the other. To remove a used pad, simply detach Perabout 2 from support 1, then drop the pad. After inserting a new pad, the user rubs the two parts of the Fune cigarette holder on the other and the latter is again ready ä to be used.

11 a 6t6 constat6 que le conduit 8 reste propre par contre un d6pät consid6rable de mati#re nuisible au fumeur est accumu16 dans la mati#re poreuse. Les analyses effectu6es ont montr# que ces d6p6ts contiennent en grande partie des goudrons et des mati#res nocives produits par la combustion du tab,ac. Ainsi le tampon retient au nünimum 30 % des goudrons contenus dans la fumie d'une eigarette, cette r6tention pouvant atteindre 50 % et plus, selon la nature de la. mati#re poreuse du tampon 7 et les dimensions respectives du conduit 6 et de la cham- bre 9. Cette propri6t6 du fume-cigarette d6crit pr6- sente un tr#s grand int6r8t, car il est bien connu que les goudrons de la fum6e du tabac contlennent les mati#res cane6rig#nes qui sont done retenues dans les pourcentages indiqu6s. 11 has been observed that the conduit 8 remains clean, however a considerable deposit of material harmful to the smoker has accumulated in the porous material. The analyzes carried out have shown that these deposits largely contain tars and harmful materials produced by the combustion of tobacco. Thus the tampon retains at least 30% of the tars contained in the smoke of an eigarette, this retention being able to reach 50% and more, depending on the nature of the. porous material of the buffer 7 and the respective dimensions of the duct 6 and the chamber 9. This property of the cigarette holder describes is of great interest, because it is well known that the tars of tobacco smoke contain carcinogenic substances which are therefore retained in the percentages indicated.

Le fume-eigarette selon la fig. 2, comprend #ga- lement un support 1 et un embout 2, toutefois le canal 6 est r6duit ä une tr#s faible longueur (inM- rieure ä 1 mm) 6tant constitu6 par un pergage pra- tiqu6 dans le fond 13 d'une cupule 14 fixde dans l'entrde 5. Ainsi, la chambre 9 est situde ä proxi- mit# imm6diate de l'entrde 5, de sorte que pratique- ment tout le conduit reste propre et qu'un nettoyage 6ventuel du fume-cigarette est plus ais6 que dans la forme d'ex6cution selon la fig. 1. Les essais effec- tu & ont montr6 que le fume-cigarette retient un m8me pourcentage de goudrons quelle que soit la longueur du conduit 6, pourvu que son diam#tre soit au plus, 6gal ä 2 mm et de pr6f6rence 6gal ä 1,8 mm. Ainsi, dans une variante non repr6sentde de cette forme d'exkution illustrde par la fig. 2, la cham- bre 9 pratiqude dans Fembout 2 pourrait 8tre d'une longueur nettement supe'rieure a celle du tampon 7 et la partie arri#re de la cupule 13 munie de la perforation 6, pr#sienter une section transversale correspondant ä celle de l'extr6mit6 ouverte deRTI ID="0002.0279" WI="7" HE="3" LX="1040" LY="2038"> cette chambre 9, de mani & e ä pouvoir 8tre introduite ä frottement doux dans cette chambre. Dans ce cas le support 1 pourrait 8tre supprim6, la cupule 13 en- gag6e ä frottement doux dans l'extr6mit6 de la chambre 9 formant simultan#ment un support. 11 est clair que la longueur de la chambre 9 doit & re telle que lorsque la cupule est engagde ä l'int6rieur de l'extr6mit6 de la chambre 9, celle-ci comprime le tampon 7 introduit pr#alablement dans cette chambre comme d6crit plus haut. The eigarette smoker according to fig. 2, also includes a support 1 and an end piece 2, however the channel 6 is reduced ä to a very short length ( lower to 1 mm) being constituted by a pergage made in the bottom 13 of a cup 14 fixed in the entrance 5. Thus, bedroom 9 is located ä immediately adjacent to entrance 5, so that practically everyone duct remains clean and that a possible cleaning of the cigarette holder is easier than in the embodiment according to FIG. 1. Tests carried out have shown that the cigarette holder retains the same percentage of tar regardless of the length of the conduit 6, provided that its diameter that is to say at most, 6equal ä 2 mm and preferably 6equal ä 1.8 mm. Thus, in a variant not represented by this form of execution illustrated in FIG. 2, the chamber 9 made in the endpiece 2 could be of a much greater length than that of the plug 7 and the rear part of the cup 13 provided with perforation 6, have a cross section corresponding ä to that of the open end of RTI ID="0002.0279" WI=" 7" HE="3" LX="1040" LY="2038"> this chamber 9, so as to be ä able to be introduced ä gentle friction in this chamber. In this case the support 1 could be removed, the cup 13 engaged ä gently in the end of the chamber 9 simultaneously forming a support. 11 it is clear that the length of the chamber 9 must be such that when the cup is engaged ä inside the end of the chamber 9, this compresses buffer 7 previously introduced into this chamber as described above.

Dans la forme d'ex#cution des fig. 3 et 4, le fume-cigarette comprend le support 1 muni d'une entr & destin6e ä recevoir l'extr6mit6 de la eigarette ä fumer et l'embout 2, muni du conduit 8, est fix6 de mani#re amovible sur le support 1 par des moyens d'accouplement comprenant une partie cylindrique 3 s'embditant dans un logement correspondant 4. In the form of execution of FIGS. 3 and 4, the cigarette holder comprises the support 1 provided with an inlet intended ä to receive the end of the cigarette ä to smoke and the mouthpiece 2, provided with the duct 8, is fixed in a removable manner on the support 1 by coupling means comprising a cylindrical part 3 fitting into a corresponding housing 4.

Une bdite 15, de forme g6n#rale cylindrique et pr#sentant une 6chancrure 16 est fix & rigidement par Fune de ses extr6mit#s dans l'extr6mit6 posti- rieure du support 1. Une cupule 17 est engag & dans l'extr6mit6 intirieure de ladite bdite 15 et pr & sente un fond 18 muni d'un orifice 19 dont le dia- m#tre est compris entre1,5 et2,5 mm. A bdite 15, of generally cylindrical shape and presenting a notch 16 is fixed rigidly by one of its extremities in the posterior extremity of the support 1. A cupule 17 is engaged in the inner extremity of the aforesaid bed 15 and presents a bottom 18 fitted with an orifice 19 whose diameter is between 1.5 and 2.5 mm.

L'embout 2 comporte un logement 20 dans le- quel est log & la partie post6rieure de la boite 15 6mergeant du support 1. Cette boite 15 ouverte ä son extr6mit6 antdrieure pour donner passage ä la cupule 17 Präsente un fond 21 comportant un orifice 22 coulissant le long d'une tige 23 se terminant par une t8te 24. Cette tige est fix6e dans l'embout 2 coaxialement au conduit 8 et pr6sente un conduit axial25 qui traverse de part en part la t8te 24 et la tige 23. Ce conduit relie le conduit 8 ä une chambre 26 form6e ä l'int#rieur de la boite 15 et d61imit6e par le fond 18 de la cupule et la partie frontale27 de la t8te 24. Un ressort 28, dispos6 dans un logement 29 pratiqud dans l'embout 2 coaxiale- ment au conduit 8 et prenant appui d'une part sur le fond 30 de ce logement et d'autre part sur le fond 21 de la bölte 15, tend ä faire #merger cette boite hors du logement 20 en coulissant ä cet effet le long de la tige. The end piece 2 comprises a housing 20 in which is housed at the rear part of the box 15 6 emerging from the support 1. This box 15 open ä at its anterior extremity to allow passage ä the cup 17 has a bottom 21 comprising an orifice 22 sliding along a stem 23 ending in a head 24. This rod is fixed in the end piece 2 coaxially to the duct 8 and has an axial duct 25 which crosses from right through the head 24 and the rod 23. This duct connects the duct 8 ä to a chamber 26 formed ä inside the box 15 and delimited by the bottom 18 of the cup and the front part 27 of the head 24. A spring 28, arranged in a housing 29 formed in the endpiece 2 coaxially with the duct 8 and resting on the one hand on the bottom 30 of this housing and on the other hand on the bottom 21 of the box 15, tends ä to cause this box to #merge out of the housing 20 by sliding ä this effect along the rod.

Un tampon 32 en mati#re poreuse et de forme generale cylindrique est dispos# dans la chambre 26. LaRTI ID="0002.0552" WI="14" HE="4" LX="1221" LY="1496"> longueur b de ce tampon 32 est pr6vue de mani#re qu'en position de service du fume-cigarette (position repr6sent6e par la fig. 3) il soit 16g#rement comprim6 entre le fond 18 de la cupule et la t8te 27 du poussoir dont le diam#tre correspond au dia- mkre interne de la bolte 15. De cette mani#re, ]es deux faces d'extr#mitd 31 de ce tampon prennent appui sur ce fond 18 et cette t8te 27, afin que le courant de fumde engendr6 par une succion du fumeur ne puisse se r6pandre entre le fond 18 et la face d'extr6mit6 ant6rieure du tampon et soit donc oblig#, en sortant de Porifice 19, de p6n6trer direc- tement dans ce tampon en mati & e poreuse. A buffer 32 made of porous material and generally cylindrical in shape is placed in chamber 26. LaRTI ID="0002.0552" WI="14" HE="4 " LX="1221" LY="1496"> length b of this buffer 32 is provided so that in the service position of the cigarette holder (position represented by Fig. 3) it is slightly compressed between the bottom 18 of the cup and the head 27 of the pusher whose diameter #tre corresponds to the internal diameter of the bolt 15. In this way, the two end faces 31 of this buffer rest on this bottom 18 and this head 27, so that the current of smoke generated by the suction of the smoker cannot spread between the bottom 18 and the face of the front end of the pad and is therefore obliged, on leaving the orifice 19, to penetrate directly into this pad made of porous material.

Pour changer un tampon 32 usag# et le rem- placer par un tampon neuf, il suffit de d#boiter les deux parties de Paccouplement 3, 4. Le ressort 28 fait dmerger la bdite 15 hors de son logement. Pen dant ce d6placement, cette bdite 15 est guidde par la tige 23, en coulissant le long de celle-ci et par ses parois cylindriques coulissant sur la t8te 24. Ce d6placement est limit6 par le fond 21 de la boite venant buter sur la t8te 27 de la tige. To change a used pad 32 and replace it with a new pad, simply disengage the two parts of the coupling 3, 4. The spring 28 lift the bed 15 out of its housing. During this displacement, this bed 15 is guided by the rod 23, by sliding along the latter and by its cylindrical walls sliding on the head 24. This displacement is limited by the bottom 21 of the box abutting on the head 27 of the rod.

En tournant le fume-cigarette sur lui-m8me, de mani#re que Nchancrure 16 soit dirig6e vers le bas et en soumettant le fume-cigarette ä quelques chocs successifs, Fusager provoque l'extraction du tampon 32 enerass#, sans risque de se salir les doigts. 11 replace un tampon neuf dans la bdite 15, puis ein- boite Fune sur Fautre les deux parties de Faccou- plement 3, 4 contre l'action du ressolt 28. Les frot- tements entre les parties de cet accouplement sont suffisants pour s'opposer ä un d6boitement intern- pestif sous Faction du ressort 28. Le fume-cigarette est alors ä nouveau prk ä l'emploi. By turning the cigarette holder on itself, so that the indentation 16 is directed downwards and by subjecting the cigarette holder ä to a few successive shocks, the user causes the 32 enerass# buffer to be extracted, without the risk of getting your fingers dirty. 11 replace a new buffer in the said bdite 15, then fit one on the other the two parts of the coupling 3, 4 against the the action of the spring 28. The friction between the parts of this coupling is sufficient to oppose ä an interpestive dislocation under the action of the spring 28 . The cigarette holder is then ä new for use.

La fig. 5 illustre une pipe munie d'un dispositif d'6puration de la fum6e de tabac. Cette pipe pr & sente un support 34 comportant le fourneau 35 dans le fond duquel d6bouche un conduit 36 pra- tiqud dans un bec lat6ral 37. Uembout 38, muni de son conduit 8, comporte ä son extr#mit6 ant6rieure un logement 39 dont une partie 40 des parois cons- titue l'une des parties d'un accouplement dont la seconde partie est cons-titu6e par une jupe 41, d'une pi#ce de raccord 42 viss & dans l'extr6mit6 post & rieure du bec 37. Cette jupe 41 forme, avec la partie post & ieure du logement 39, une chambre dans Iaquelle est dispos6 le tampon 43 en mati#re poreuse. fig. 5 illustrates a pipe equipped with a device for purifying tobacco smoke. This pipe has a support 34 comprising the bowl 35 in the bottom of which emerges a conduit 36 made in a side spout 37. The tip 38, fitted with its duct 8, comprises ä its front end a housing 39 part of which 40 of the walls constitutes one of the parts of a coupling, the second part of which is constituted by a skirt 41, a connecting piece 42 screwed into the rear end of the spout 37. This skirt 41 forms, with the posterior part of the housing 39, a chamber in which is placed the buffer 43 made of porous material.

Le fonctionnement de cette pipe est semblable ä celui des fume-cigarette d & rits plus haut. The operation of this pipe is similar ä to the cigarette holder d & rits above.

Dans une variante, les moyens d'accouplement peuvent pKsenter deux parties se vissant l'une dans l'autre ou etre constitu# par un joint ä baionnette. La t8te de la tige peut pr6senter une rainure dia- m & ale afin de permettre le dbissage de la tige ä l'aide d'un tournevis. La cupule 17 peut pr6senter une collerette ant & ieure prenant appui sur un #pau- lement formant le fond de l'entrde du support 1, ainsi que sur le bord ant6rieur de la boite 15, celle- ei & ant en outre vissde par son extr#mit# ant6rieure dans l'extr#mit6 post & ieure du support 1. De cette mani#re, le fume-cigarette ou fume-cigare est en- ti#rement d6montable. Alternatively, the coupling means may pKsenter two parts screwing into one another or be constituted # by a joint bayonet. The head of the stem may have a diameal groove to allow the stem ä to be unscrewed using a screwdriver. The cup 17 may have an anterior flange resting on a #shoulder forming the bottom of the entrance to the support 1, as well as on the anterior edge of the the box 15, this having also been screwed by its front end into the rear end of the support 1. In this way re, the cigarette holder or cigar holder is completely removable.

A Pusage il a 6t8 constat6 que des d6pöts im- portants de goudrons et autres impuretds se pro- duisent dans la partie post6rieure extr8me du tampon filtrant 7 ä proximit6 imm6diate de l'entrde du con- duit 8 (fig. 1, 2 et5) et respectivement du conduit axial25 (fig. 3). 11 a, en outre, 6t6 constat6 que lorsqu'un espace vide est m#nag6 dans le support 1 entre la face post & ieure de la cigarette support6c et le fond de la cupule, les parois de cette cavit6 sont couvertes d'une couche brunätre assez 6paisse de goudrons et autres produits, ainsi que de goutte- lettes d'eau de condensation. En introduisant dans RTI ID="0003.0278" WI="11" HE="4" LX="259" LY="2152"> Fentrde du support 1 ou dans la cupule 17 une cigarette munie d'un bogt filtrant d'un diam#tre appropri6 jusqu'ä ce que l'extr6mit# post6rieure de ce bout filtrant soit en contact avec le fond de la cupule ou de la cavit#, il a & # constat# que les & päts se produisent dans la partie ant6rieure du bout filtrant, ä proximit6 imm6diate de l'entr#e du conduit 6 ou 19. Enfin, en plagant de la m8me mani#re une cigarette d6pourvue de bout filtrant, on a constat# que les & päts s'effectuent alors dans le tabac de la partie post6rieure de la cigarette. 11 se produit donc dans l'article de fumeur d6crit ä pro- ximit# imm#diate de l'entr6c du conduit ant6rieur et du conduit post6rieur par rapport au tampon fil- trant, des ph6nom#nes particuliers qui contribuent ä augmenter encore le taux d'extraction des impure- t6s contenues dans la fum6e. A In use, it has been observed that significant deposits of tar and other impurities are produced in the extreme posterior part of the filter pad 7 ä in the immediate vicinity of the entrance of conduit 8 (fig. 1, 2 and 5) and respectively of axial conduit 25 ( fig.3). 11 has, moreover, been observed that when an empty space is provided in the support 1 between the posterior face of the supported cigarette and the bottom of the cup, the walls of this cavity are covered with a fairly thick brownish layer of tar and other products, as well as droplets of condensation water. By inserting into RTI ID="0003.0278" WI="11" HE="4" LX="259" LY="2152"> Support slot 1 or cup 17 a cigarette fitted with a filtering tip of an appropriate diameter until the rear end of this filtering tip is in contact with the bottom of the cup or cavity, it has '# finding that the & päts occur in the anterior part of the filter tip, ä immediately near the entrance to conduit 6 or 19. Finally, by placing in the same way a cigarette devoid of a filtering end, it has been observed that the & päts then take place in the tobacco of the posterior part of the cigarette. 11 therefore occurs in the smoker's article described ä in the immediate vicinity of the entrance of the anterior duct and the posterior duct with respect to the filial buffer. However, particular phenomena contribute ä to further increase the rate of extraction of the impurities contained in the smoke.

II West pas n6cessaire que les faces d'extr6mit6 du tampon en mati#re poreuse 6pousent, sous, Fac- tion de l'61asticit6 propre de cette mati#re sur toute leur surface la forme des parois d#extr6mit6 de la chambre, mais il suffit, en r6alit6, que les faces d'ex- tr#mit6 du tampon 6pousent enti#rernent la forme desdites parois d'extr6mit6 dans le voisinage immd- diat de l'entr6e et de la sortie du conduit de fum & . It is not necessary for the end faces of the plug made of porous material to follow, under the elasticity specific to this material over their entire surface, the shape of the end walls of the chamber, but it is sufficient, in reality, for the end faces of the buffer to entirely follow the shape of the said end walls in the immediate vicinity of the inlet and the outlet of the flue.

En vue d'assurer cette 6tanch6it6 au voisinage de l'entrde et de la sortie du conduit de fum6e, il est avantageux dans une variante d'exkution des fig. 3 et 4, de disposer entre la face frontale ant6rieure de la cupule 17 et Npaulernent du support 5 un ressort qui tend ä appliquer cette cupule sur le tampon 32 et donc ä comprimer celui-ci 61astique- ment, ce qui assure automatiquement l'6tanch6it# d6sir#e autour de l'entr6c et de la sortie du conduit de fum6e. In order to ensure this 6tanch6it6 in the vicinity of the entrance and the outlet of the flue, it is advantageous in a variant execution of FIGS. 3 and 4, to arrange between the anterior front face of the cup 17 and the shoulder of the support 5 a spring which tends ä apply this cup to the tampon 32 and therefore ä compress it 61astically, which automatically ensures the desired tightness around the entry and exit of the flue.

Claims

CLAIM Smoker's article, comprising a device for purifying the smoke in the smoke duct, characterized in that this duct has a section whose cross-section is at least equal to 25 times the cross-section of the duct and constitutes a chamber of generally cylindrical shape in which is placed a plug of porous material of corresponding shape, the end faces of which are applied by the inherent elasticity of the porous material against the end walls of the chamber and push at least, in the region located ä in the immediate vicinity of the inlet and the outlet of the duct, the shape of the end walls of said chamber. SUB-CLAIMS 1. A smoker's article according to claim, characterized in that the cigarette holder comprises two parts detachably connected one ä the other .

2. Smoking article according to claim and sub-claim 1, characterized in that each of said two removable parts comprises a wall provided with a hole and which constitutes one of the walls of the end of the chamber. 3. A smoking article according to claim and sub-claims 1 and 2, characterized in that one of the end walls of the chamber is formed through the bottom of a cup inserted into the open end of the cigarette holder intended ä to receive the cigarette. 4. Smoking article according to claim and sub-claims 1 and 2, characterized in that a joint between the two removable parts is located in a transverse plane of the chamber. 5. A smoker's article according to claim and sub-claims 1 and 2, characterized in that the smoke pipe of has a diameter between1.5 and2.5 mm. 6. A smoker's article according to claim and subclaims 1, 2 and 5, characterized by a cigarette holder in which is fixed at one of the ends of a box of generally cylindrical shape, an end piece in which is fixed a hollow rod provided with a head which slides in the part of the said box emerging from the support, and a spring tending ä to separate the support from the tip. 7. Smoking article according to claim and sub,claims 1, 2,5 and6, is characterized by the fact that said bdite has in its peripheral wall a notch giving passage to the pad of porous material and that the relative displacement of the support and the end piece is limited by the head abutting against the bottom of the box.