Tobacco Documents Online

Jan. 20,19'70. /6 43 I Tc. i~u0 1' w" Nw3 e , L& j • ~ 'I J. S. osMALov ET AL 3.490,461 C'IGARETTE YENTiLATPON 2I Sheets-Sh!.et 1

J. S; OSMALOV ET AL CII6ARb7TL VENTILATIION . 3,490,461 2I Sli..ts-lSh.lst 2. FIG. 4 F/G. lo ie'

United States Patent Office l! CICAREiM VF7wTILATIhpN Jeroare & Own.t+sv, Artbtrt; R. E.sq+ttst,Robent li. Sedt, toan, aad Atadrew C. drfdo., Rlcbmoad. Va„aarfttoaa t. lhflip Mornts Incaryorste/, New Ytwk'r,N.Y.. a ear+ romd" RH.d AV 20.1~liT' Srer. No. d3II,1'3f' Iet..Cl. A1{d 1104 U.11: CL 1D1-11.5 ! C1dmg 3,490,4161 Patented J.n. 20,1'9'70 2 t+td:aas and reatllatiaY air tartri.a ot>satra iN t4e lmtobeYa trtotrth ts~ltta~ fi.: 'betttr lasye aad I increased tuvor ea- pgriersos for 16e itlI 71k ptrenotngtroe ig tw kss ap- pamnt as applW to rton-6lter tyfK e>taettcs. The present,inventionachieves the foregoing desirable ends with a tnouthpibce suited for use with both filtertype and tton•blter type cigarette and I which allows delivery of' the smoke stream to the smoker s mouth through a central passage in the: mouthpiece while concurrently, ventilating air streams are introduced 1 into the cigarette in , flow paths complbtely segregated from the smoke stream, Thus In the case of a fi'lter cigarette, only smoke transits the: 6lter section andl the smoke stpeami is first commingled with the venGlatinj, air streams only upon delivery of each to the smoker's mouth, S(UMMiAR'Y OF THE INVENTIO19i' 6 Io Aa6TRACIr OF, THE DLSC[.OSI?RE A cigarette m+rhicb the smoke drawn from the to- , baeeo section is delivered to the•strtoker'i mouth throujh, a: central passage in a mouthpiece arranged in ~ aQgnment' If+ with the tobacco section and in fluid communication there- with, the mouthpiece being, provided' with one or tttore. ventilation passages througlr which ventilating stteattu of' The ' cigarette of'the presettt inverttioo is intended inter air are drawn during smoking, the ventilation patsattes; alia, to provide for maximum smoke filtration of a filter being segregated from the central passage in a manner 20 type cigarette yet embody means to take advantage of which prevents commingling of the smoke qrwm and the effects of cigarette ventilation and also to provide a ventilating streams prior to the deliverlr of eacL to tha novel means for ventilating non.6lter type cigarettes. Ae- smOkery mouth~ eordinr, to the invention, a hlter cigarette is provided with a tubular mouthpiece at the rear end of the filter section, tx dwcrtcd in a manner xgregating ttxm from the anwkc the ribs wili' fimction to sub-drvide the smole pasu;o atream, it is possibk for the filter medium to be utiliie+d' Into t.vo or more separate smoking passaFes. to masimum eflcct for filtration or' smoke eomponentti TO The mouthpiece can he formed from various materials Furuhermort, the proviaiwniof'segregatcd amoke and air includint,thermoplasticag corrugated parer and metal foil. stream+ amerna that the fnt ownsrdngling of the nnohe A funther fraturc ofi the conuructioo of the mouthpiece pro;resscs- On the other handJ if the ventilating streams well as giving it an attractive appearance. In this event. j and ehannci along defined paths in the filter medium to than tti,e tobacco cylinder, and the later inserted partly the exclusion, of the smoke stream. Thus the availabk thorein., flow paths in the filter seetion, for thc smoke stream bc- According to the invention, the mouthpiece can be come lhsenedi and, as a consequence. filt?atton efficKncy Aa provided wiih internal rih+ extending the full kngih there- of the filter section decreases particularly as the smoking; of' and serving to strengtheni the mouthpiece structure as smoke stream is not' used to full adivantage because the: If'the mouthpiece is used w ith a non-filter type eisarette, ventilating ain streams tend to transit the: filter section ap it can be connected with the tobacco cylinder with adjacent the poiot, of entry of the air streams thereto wrapper sheet, or the mouthpiece can be made larger a t e c ed s ea o r ucmg, the quanttty of smoke paruat- thereof the arrangement berng such that the smoke pas• lates and gas phase components delivered to the mouth ~ sage and ventilation i passages extend in the same general in the course of'eaeli pulf taken on the cigarette. Further- dirt:ction. The outlets of' each ventilation nac~taye corn- rnore, the ventilating,streams function to cool the smoke: municate directly with the smoker's mouth so that the stream. Various means of introducing the air stream into 33' ventilating air, stream and! smoke stream ar-_ each de- the cigarette are known as, for e~tample, the tobacco cyl- lnvered', seraratcly to the nauthl the ventilation passages inder wnpper ean be a very porous paper which allows also being provided with inlets in eommunication witb the for aspiration of air, theret~6rough and into Ute tobacco attnosphere. Th- ventilation passates:may be provided inn cylinder where it commingles with the smoke stream or„ a number of way;s. for ezampk, the mouthpiece can be the tobacco cylinder wrapper, may be perforated at loca- 40 forrned' with lonFittdinal grooves in the outer periphery tans along the lengthf thereof which provides radial l ac- thereof„ the grooves having a suitable shape such as being cess potts to the tobacco cylinder through whicb venti arcuate in section; A wrapper sheet,can be employed to tating air streants enter the eigarette. It is also known to enclose the mouthpiece and!conrxct it with the filterr sec- perfonte the filter section wrapper of a filter cigarette tion„orwith the filter and tobaccn sections. Each groove or otherwise provide it with ports eorttmunicating, with 45 thus provides a ventilation passage. The inlet to the : re- the filter tnedium to admit' the ventilating air streams spectixe! grooves can be proaided by perforating the directly to the filter section rather than to the tobacco wrapper sheet to establi.h communication to the atmos- cylinder. phere, or the mouthpiece can be madk slightlyiarger than The foregoing known ventilating means:arc eHectixeto L0 the filter section to allow insertion of'the latter at'leau produce significant dilution of'the smoke uream, but~prr~ partly within the mouthpiece in which case the inlrtcnds vide that, such dilution first occurs w,ithim the cigarette of'the pa.aages communicate direetly, wwith atmosphere. It and not in the srnoker ~ mouth. Allo; when these means, is also possible to form the vemilytion pazwpec in the are empioyrd with 8lter cigarettes, they each suffer from structure of the mouthpiece intermediate the inner and a common shortcoming in~that;~ot thatpoosmoke stream„ as outer surfaces thereofi In this embodiment; the ventila- but' the ventilating air streams are directed through at tion pa~ssages are constituted by a series of lontiudinal least a portion of the filter section. Thus the filter, medium conduits in the body each having a, radially, direeted inlet which~is intended to rentove smoke eomponents from the port which communicates with the atmosphere. !3 the mouthpiece having at least one central passage there. through providing, a flow path for the smoke stream so that the ~ latter pas.es tmimpeded l f rom the Glter seaion to It is known that •eertain advantages accrue from the the smoker's mouth~ The mouthpiece is aNo provided introduction of'ventilating air strearns into a eigarette to withione or more separate ventilation paa.af+oc formed in dilute the smoke stream. The dilution of the smokestream 30 thc body of the nwtttht+icce at or adjacent'the periphery h h R f ' BACKGROUND OF'71FIE IN'VENTJON'

11 8,4'90,461 3 4' is tls.t cisarrtte Savorins substances such as menthol can because a ksser votutne ~ot smoke is actually puffed a1- be iooorponated in one or more of'the ventilation passages though the tota<I polurne pulled' by the snsoku is subsun• acd'smok;e tseatics subst:;aces ua be incorporated in the tiailr 16e same as that be would' puff,, if ventilation sras amiokt paasare. not eaeployed. In otftcr words. (or' a gi ven avcrage puff Tba invention accordingly comprises ehe features of s, volume; the ventilatipg fFesh air stream volume will re+ eoa.tcvction, combination of elerrtenls,, aad arrangement duar the smqke stream volurne.aceorrlintly: In this man• d' p.rts, which will be e>remplified' in the eodferuction ner. less actual smoke is dclivered to the setwker'>< mouth hcwidafter set f«>rth apd the scope of the inventioa will and hetxe less smoke solids. As those ski'lfed' in the art be Infketed in t4e elaimsL will perceive upon reading the present description, a lesser ly i smoke draw during, puRing will be aceompanied by a de- •RIE'P DESCRIPTION OF TIIfE' DRAWING crease in smoke stream velocity»~ providing for a Ionger dwell of' the smoke in the cigarette filtcr unit aith con- A fuller twderstanding of' the nature and objects of wqucnt promotion of, the effectbveness of'sttwk,e 8ltration. the invention will be had from the follo•ning, dctsikd Turning now to a consideration of the tilter type cig- description taken In conjunction with the nc+companying 13 arette 10 illustrated in FIGIJRiE 1, it,inchdes a t.+aeeo drawinj in sbich: senion 12 comprised of a eylicder of tobacco 12 and FIGURE I is a longitudinal sectional view of a ventila- a paper wrapper IS'thcrefor: Aligned with the tobacco eyl- led' cigarette made according to the present invenlion; inder 14 is a filter section 16 which cromprisea a suitable the thickness dimensions being, exaucrate!d for purposes' filter medium in i contact with an end of' the tobacco eyl- o( clarity. !p inder. The filter medium may be of various subatance%. FIGURE la, is an end view of'the cigarette shown in aK for examrle: a tow of'cellulow acetate. a componcqe. FIGURE i' as vicwed' from the left side thereof. structure including a fiber and a granular filtrant such FIGURE 2 is a view similar tb FIK'iURE' I showing a artharaaall or any t,thcr form of filter medium suited for modification wherein the filter section of the cigarette the intended purf,o.e.. Iks is a common practice in filler extends within the motnbpieee. Zy, cigarette making, the ftlter section is formed aR a cylitt- FIGURE 3' is a view similar to FIGURE 2 exeepC that drical body, having substantially the' same diameter as it illustrates a ntm-filler type cigarette which is ventilated the tobacco cylinder. Aligned with the filler .ection is a according to the teaching of the present inveotion. mouthpiece 10. the latter device having an inner passage FIGURE 4 is a view similar to FIGURE 2 e:eept'it 20 extending, thercthrouph and providing a flow path shows a, filter cigarctte wherein both the filter medium 30 for the smoke drawn through the filter section and de- and'tobacco cylinder extend within the full length of the livered to the stnokcr's mouth during puRing: h'f ottth- mouthpiece• pieee IK is eonwenicntly formed as a igenerally cylindfieal FIGURE 3~ ia a view s,milar, to FiGURES l and 2 of' body with the .-alhthicknecs thereof being kept at a mini- a further modified form of the cigarette wheneia, the mum in order to reduce the area th.veof which confronts venttlation ipassages in the mouthpiece are formed radial- w,, the end of the filler medium and thereby kcs,en the area ly inwardly a distance from the mouthpiece outer surface. of the filter medium which ican not be used for filtration, FIGURE 6 n a perspective view of a atoutbpiece which purposes: The outer surface of' the trxxuApiece tg is an be used with toe ttisartttes illustrated in FIGURES formed in such manner thac it will provide structure de- - I' and 2. fining one or more ventilhtion paswges in the month- FIlGl1RE 7 is a transverse sectional view on enlarged iu piece. Thus it may be formed with onc or more longi- scak of a tnouthpitee of'tbe type illustnted' in FIGURE tudinall grnoves 22 as best seen in iFIG'URFS lo and 6. S'showinj an additional modification titeretain the forta The grooves 22' may have the arcuate shape shown in of a central supporting rib. which case the mouthpiece will have a fluteJ appearance. FIGURE g' is a fragmentary perspective view o' a The numbcr, and' dimonNions of' the F*oovecs 22 may be mouthpiece which is fortned from either eonugated papcr varied' depending on the mcaaurr of ventilation dc•ired. ooa [oil of a metal. ei It will be understorodl that the %urface confiFnratiron of FIGURE'9 is a perspective view of'a further embodi- the mrxrthpiece may' include Fronves. channelni emi tnatt of tttouthpirc in which the ventilation passages b,utsed structure or other atuface formatiani whieh are ate formed so as so follow a spiral eourse, suited' to produce one ur more trnoh+.trni palhs along Throughout the description like reference numbers are which aream, of ventiGuinR air can 0ow in trantit ta the used to denote like parta in the drawints 60 .moker's mouth~ the c.%cntiid requirement hcinp that Ihe ventilating air stream Raths he sepreg:ded i frKxn the .mcrke DF.SCRIPTION OF THE PREFERRED stream flow path consNtuted by inner pa%sapc :0. EMBOI3IM!EN'T1S' Mouthpiece 13! is preferably formed .o that its out- sidb diameter is substantiallj~ equalito that,of the filter The cigarette of the pre:~eot invention embodies means 63 section facilitating its joinder to the, filter aeciion by, wlthwhlch separateventilatingaiestreams, can be de- means of ai wrafrper vhceu 2#, thc lauer bieing.commonly liirored to the smok'or's mouth eoncurmtntly with thr referredl to in the ard' as a comhinirg wrap. llhe x-r:rpper smoke stream at which point the first eomminglina, of shcet 24 encloses' the outer surface of the mouthpiece the respective streams occurs. The eoofing, dilutina air and bears tightly against the peaks 17' formed loy the strcams are delivered through the agency of a mouthpiace aD intersecting surifaces of' adjacent grooves 22 effectively reCresentalive eonsttnret'tonal'forms of which will be de- making eaeh, groove 22 a separate ventil3tion pas!cage saibed shortly. The present invention provides that tbe' which is segregated from each of the others and f hpie+rxron tn out outhpie+rx can be used in conjunction wits, a Eltu.- c eijarette or with a cylinder of tobacco alone to noake use, inner passage 20, lhu feature btins, more rcadily a ot the positive effeets ofdlFarettt ventilation. ~ parent by refcrence Io FIKiURE la. The wrapper shei As a preliminary, a brief discussion willl be InaJe of 24 preferably, iis a I+orous p:rpcr which allonx air, to p:rey~ ~ the advantagts and attributes of cigarette ventilation- ln thctethroush'~, qreftrybly being one haninR, a Grciner [~/t+o- <trneral, ventilation involves introducing airintm the smoke rosity of between n!O and 0;1- An outcr wrapper 26 over .tream ultimately, de'livered to the, smokerts mouth. Tbs lies the wrapper shcct 24 and iw nrovi.kd' for tHe piur air aerves. inter alia: as a coioltat and a.4o na a diluent 7o of' joinin6, loltetber the nRS.emhly of the moulhricic. fil- toe d,ltroina the smoke thereby diminishing the amobe ttr section anJ' ,ohaoc.r .oair.n., Tue, ordcr wr.~ppor II6 com{+rrncnu present in the delll.tred amoka,The reduction which is a type armnronly, ndcnrtJ to in Ilie lot+atco art of parti+culaae matter andl gas phase in the smoke which . `,ippins parycr,' i, inrr•crviuus to a;r 11uw bu1 sinve veni k. dliinermd to the mouth is derived from better Ntration tilatinr air muv he JcJivcrcd' throuFh Ihc mouthpioeew (in fiber types) of' the smokr actually pt,6ed aodl dao 76 ventilauoni pavascti the outet wrapper I6 is provided0

3;4'90,4i61 5 6 with perforated openings 28 in the retions thereof ad- of the filter trnit is availablo for filtration and the recessed Jaaent the inlet ends of the ventilation passages. The location ot' the filter medium kssens the likeiibood off perforat.d,openingy 2K may, be arranged as ont or more the smoker contacting same with-bis tongue. A further ekwles of opcttinga extending, around the mouthpiece. important advantage of this eonstruction~is that the ventt- It is in this maooer, that the ventilation passages arc latiag air transits the tull' length of'the'lilter audiura and placsd' itt eonrrnunication with the atmosphere. It, will 6 contributes to a eooling of the filter with consequent' im- 1e understoodlthat wrapper sheet 24 also oouldibe a,type proved smoke condensation in the latter. A wrappershect of paper that is srtbsfantially impervious to the passa8e 52 encloses the outer surface of the mouthpiece and it of aiflth+erethrough: In thistase.,the wrappersheet would can be an sin impervious type since the inkts to the re- also be provided with perftuated' openinp similar to 10 spective ventilation, passages constituted by grooves !0. opetuogs 28; are open to the atmosphere directly as' at 54. As in the The flo« pattetms of the smoke stream and ventilating prxviouslydescrihed'embodimcntof'Fi+GURE 1„the smoke air struams may be noted in FIGURE 1. Tbus, during stream and ventilating, air streams flow paths are shown puQiag thc smoke stream which is depicted by a single in solid heanq, and da%hed lines respectively. heavy line, is drawn from th: tobacco section ~ 12. through 13 The cigarette 100 shown in FIGURE 4 is the same as filar section 14 and unimpededly through the inner pas- that shown in FIGURE 2 except' that the, filter saction sage 20 of'the mouthpiece being deGvcred directly to the 101 therein extends fully within the mouthpiece 102; the smoker's mouth on exiting,trom passage 20. Aceompany- rearmost end of'each being aligned'as at 1'08: Also, the mg the draw of the smoke stream, is the concurrent ntouthpiece extends over a portion~ of' the tobacco sec- iotake to the smoker's mouth of' ventilating air streams E0 tiott 104 as at fOS. As with the cigarette of' FIGURE 2; ia the' pattern as shown in dashed lines Thus, the' ven- the cigarette U00 can include a combining wrap 107' for tilatiog air is drawn from the atmosphere throughopen- joining the tobacco cytinder, with the filter medium, Cool- ings 28 in the outer wrapper 26, through the porous ing of'the filter medium 101 by the ventilating air occurs wrapper shect 24 and into the inlet cods of'each venti- in the same manner and with the advantages desaib'edi fation passage. The ventilation passagps comprised by II ton cigarette 40. the grooves have outlets, coincident with the plane io The mouthpiece structure used in the eigarette, em- which lies the outlet end of inner passage 21 so that the bodiments ofI FIGURES t' andl2' may be made from a ventilating air streams exit from the mouthpiece within variety of materials and formed in a numben of ways. the smokerTs mouth ttot having theretofore eommingkd' For example, the mouthpiece 1I8 shown in FIGURE 6' with, the smoke stream. The ventilating, air streams can i 30 is made by extruding a tubular body of l thormoplastic eater'the mouthpiece ventilation passages only through material of, continuous length and then sectioning same openings 23 as the outer wrapper 26 is air impervious bprovide individual mouthpieces. Suitable mouthpieee'I attd no outside air aspiration to the, 61ter section 16 is materials can include thermosetting resins such as phe- possible. It is to be recogni:ed however that the intake of'air to the ventilation passages by way of openings 28 nolics Foamed polyurethane also could be used prov' may kt some inuancn, depending on the level of dilu- 25 an air' impervious film was applied to the external sur- , tion involved, flow velocity of the ventilaGng, air and taces ttxreof; or the mouthpiece could I be made fNom an , otlter fanons tendl to set up a"venturi effect" at the extrudedibnded fiMr. The dime~t:er.ref the m~ hptst: inkt'onds of the ventilation passages promoting the ia- can of'eourst: be varied with recpect to teng~th. For ex- take of air to the ventilation passages from the filter sec- ample, mouthpieces' with kn~ths between ltt,and 3tt mm: tiot4 This can be obviated by printing, a thin coating of' 40 or more and a circumference of 25 •mm, are, readily a' smoke impervious material on the rear face of ths adapted for u%e on eai,ctinr cigarette m rkinp machincx- fiLer medium avat 31.. It is also pmcsible to male the mouthpiece from pap:r The, pcnforated openings 2gl in the outer wrapper 24 or a foil of a metal such as atuminum prosidecllsumr ix can be fonmed therein various ways. One eonvenicnt sufrrciently rigid to he shapedl inlo and retain the struc- mettiod of effecting this is to needle-pierce the outer 45 turallform of the mouthpiece. Thus„a sheet of corrugated wrapper to form the openings therein before it is wrap- paRer or metal foil can be rolled to form a tubulhr fluted ped on the cigarette. The number andi size of the open- structure 66 such as that shown in FIGURE 8. the tc- ings in the outer wrap can be varied dependiag, upon spective longitudinal margins being eonnectedi together the level of dilution tr ?k provided. In general, the dilu- m abuttmenC or overlapped relation to form a soam as tiort range may vary, between 0'r`.e and 80% ventilating yo at 61, the rolled sheet thereafter being cut into individual air in each i puff, the actual, dilution, employed being de- mouthpieee lengths. The mouthpiece 130 shown in FI ,',- i term-rncd by factors such as end' point of' acceptable URE 9 is formed as a generally cylindrical body. As ~ taste, cigranetto,resistance to draw, etc. Obviously, if the will be noted though, the ventilation paccaees 1Jf,therein dilution is low and the mouthpiece is made with a num- are formed l to trandt a spiral course in the direction i of ber of Fas'sages more than are required to achieve the 0;, the major axis of the mouthpiece. This mouthpiece is necessary dilution, openings 28 will not be provided in intended to be used wherein the filter section e.tcndk tha outer wrapper for each corresponding passage but within the mouthpiece and advantapc can be takcn of' , only for as many as are associated with the particular the longer' passage of air along the paKsaRes 1311 to cool diluUon kvel. the filter medium and thereby dcrive the henetils a9reatly The outer wrappcr, is not neceswry on the form of' al mentionod, in the description of the cigarettes of FIG- I' cigarotte shown in FIGURE 2_ This cigarette 40, has a UR'ES 2 and 4. tobacco section 42, filter section 44 andl a mouthpiece The mouthpiece slructure of the present invcntion not 46' similar to that already di:scribcd in that the latter has only serves as the means by which separauc smnke arurm a eentnl,or innersmokc passage 48'and a group of'longi- and ventilating air streamq delivery can he made to the tu3inal grooves 50 formed circularly spaced around the e.•r smoker`i mouth, but-N, prowidcs a convenient ttte:ms of ~ outer surface of the mouthpiece. The taster grooves'eould incorporating flavoring .uhet,ncot in the cip:rretlca.,Thrn ~ for' example comprise six in number and be arranged aa shown in FIGURE 6', pariiclesSgol'a menthul..prayed at a spacing of' 60 intervali. The mouthpicce, however„ on film of ancthok or other .uitablt lohnccu fl+vorin lWR is providcd' with an inside d+amcter' jcst slightly larger subsunce can be disposed in, the ventilatiron pa-acc+. It thaa the outside diameter of filter section 44 thereb'y 70 is also possible to imprrgn;ttc the mouthpiece with a smlu+ h. altowing the filter section to extend into the mouthpiece tion of the flavoring .ubnunce if the moWtfipioce nwrcriA in the manner shown. For, facili.ting, s%cmbly of the b of a ehairaeter which lends i1,-¢If to that ond, as fo (_Qr eigarcae. the tobacco cylinder 42 is joined to: the filter caamplc. thc paper mnuthpicce,of FIGURIE'tt . aectioo with a papcr'combining wrap 43. IAdwanu{cs of Another form of' mouthpicec is uRedi in the eiparette ~ A this eonsttvetion, are, that the full cross sectional arca 75 : 70 slwwn ia FIGURE 5. The ei`arettc 70 is very similar ~~I t 0&

38490,461 7 8 to the cigarette of FIGURE 1,excopt the mouthpiece 72 *with combining wrappert and tipping paper. The total ltsell Ia of'aomewhat dllferent construction. Moutkpiece R11D of the,cicaretits rne:rsurcd prior to smoking was an 12 is of'=cnerally eylindrkal shape having a central'amoke average of 2.3 ir,4 of water: The dilution as measured pasaag. 74. The ventilation passages howevir, are eot during smoking averaged J5R'. A number of'cipnettes 6ocmed at the, outer surface of' the mouthpicce: lnstead, s also were made in which thr: rnouthpieces bad eigbt, they are formed at a circle of longitudinal conduits 74 ' grooves each approximately 0.050 in: wide and 0411 in. !o tbe atructure of the mouthpiece intermediate its inner deep at the center. The cigarettes prior to smoking bad. and catcr aurtacrs: The conduits 76 can extend ead to an average total RTD of 2.7 in. The dilution as measured end ot the mouthpiece body with each eonduit ~having an during smoking averared I 417%. . The tipping, paper used . inlet port' 7• extending, radially outwardly to, the outer, lu for both types of cigarettes was provided with 49 holes ~; surface of the mouthpiece. A porous wrapper sheet fp approximately 0:030 sQ. mm, in area: When the eigarottes ttnd an outer wrapper g2 can be provided with the outer with~the 24 groove mouthpieces weresmoked onia citarette ~.-srrapper t2 having perforated oprninfrs 04I thercin asso+ testing machine, they delivered an average of 10 mg. of', eiated with oach, ventilatinE passage for the purpose of TpM (total particulate malter,) and~ 3.1 mt. of OGP' placing the inlet of the ventilating passage in cOmmuni- 1;, (organic gas phase ): corresponding un.rntilated (i.e.. not: cation with the atmosphere. The smoke stream and venti- fitled with mouthpieces) cigarettes delivered 20 mg; of'. IaUot air stream flow paths having been illusuated' for TPM and 4.2 mF: of OG'P: It! will be seen then, that the eirarctlc 70 in the same manner as previously described. ventilation aeeounttd for a notable reduction in TPM'and' FAGU)RE 7 shows a modification to the .mouthpiece 72 p(;P delivered to the smoker, of cigarette 70. The modification provides for including _0 Thaprinciples of', cigarette ventilation acoordinlt, to the a stiRening rib 90 in the mouthpiece structure. The rib prexnt invention also can be: applied' to non-filter type 90 preferably is formed integral with the Ittructure as cigarettes as may be seen by reference to F1GUdCE 3.. (i ahownand extends end to end thereof. The rib effeetively which depicts a eigarette 1120!which has aitobaceo seetirtis sub-divides the central! smoke pacsaRe into two separate 121 extending partly into a mouthpkee : 122 of the con- smoke passages 92. 94. While the confrontation of the:rib Yx struction shown in FIGURE 6', the mouthpiece being:en- with the filter media serves to reduce the ares of the latter closed with a non,porous, wrapper sheet 123 which is which is available for filtntionl the rib nevertheless serves employed to join the tobacco section to the mouthpiece: to rigidize the mouthpiece structure where the shell thiek- When the smoker draw<c on the cigarette 1'20, the,smoke ness of the latter is very small. The rib also serves as a is delivered to the mouth by way of mouthpiece central decorative function and is not limited to being a single 30 passage 124 whereas a concurrent flow of ventilating air rib. For esampk, the rib : could be of cruciform section. is delivered to the mouth tl:re_gh th, :'r ::it:.:ic't pas. A number of important advantares result from the ven- sages 135 in i the mouthpiece entering the latter through tilated eiFarett< of tlre present invention, the obviaus prime perforated openings 128 in wrapper sheet 123. the course advantage being, that dilution of the smol'e: thereofl with of the air being shown by meana of dashed'linesd It is also ~~~arl~t?~'s ventilating ai'r streamR reduces the~ tobacco solids and 3+ possible to provide communication,betiween the inltts of smoke orpinic gas phase delivered to the smoktris mouth the respective ventilitting passages 125 and atmosphere by andd this.whether the tigaretlee be a filter, type or, non-fi1ter securing wrappersheot 123 to thee wrapperof'r tobaccoo type. In the case of the filter: type ciearctte the reduction section 121 with a non.continuorn circle of adhc.ive as of'particulate matter delivery is further enhanced by the 40 at 127, the spaces between succeeding adhered segments better fltratipni possible with dilution by reason of a of the wrappcr, cheel oni the circle pro.-iding, breathing longer dwell of the smoke within the filter medium as ports to admit air. The mouthpiece 122 is shown in FiC• will appear from the es[ampk: to be given bebw: An nn- URE 3 as bting slightly greater in! diameter than the expected adrantage to thr: smoker is the provision of in- tobacco cylindtr so ass to receive the latttr, It will he ' ereasedlsmoke flavor and taste possible with the cigarette apparent that the diameter of' these two structules alw of this invention. This is believedattributable to the fact 43 could bcmade:cutntantially tapal.,Zlha follokine esample ` that:U+e first smoke dilution occurs in the smok'er'smouth will serve to illustrate the positive achicvements nf'ven, as a consequence of separate delivery of the smoke stream tilating, non-filter type ciFarettes. 15 mm: plaRtic moulh, and ventilating streams thereto. This first taste "impact' piecer of' Ihe, type shown in FIGiUR'E 6' werc attatchc&to was found to provide more pleasurabk taste response to g3' mmt tobacco cylinders,, being joined toFether w~ith n the smokertbaniventilated cigarettes in which fint dilution "0 ct"nventional tipping paper. The tipping pat+er w;.s per. occurs without the mouth. A further adYantage of' the forated with two circul:r rosvn oCopcnines adjacent' the cigarette of the present,invcntion lies in the faoY that the inlet of the respective ventilating passaRes: Control, cica. ventilating airstream passage and smoke stream passage retles comprising each a,.85 mm: fcnFth,tobacco cylinder are seFregmed from each other and lacking communica- 5,5 joined to a 13 mm. length paper mouthpiece without venb tioniwithieacb other it is impossible for hackup of'srrroke tilating pascages -ere provided. The cigarettes were then to occur throueh the ventilation inlcts. Thus tbe: smoker smokedland the following representative parameters were cxpenences no staining or odorizing of' his fingers' from noted. smoke as can oeeurwith other typcs of ventilaled cigarettess wherein the smoke passage communicates with the ventila- 60 t IOUtM1~I t\Mh~MltHq/bt tion passagc. The c3fecti.cness of the principles of cigarette vontila- tion of th!rprexnt invention.as embodied in a Alter type cigarette will'~ be apparenC from the following,example. A numbcrof cigrrottcs of the,construction shown~In F'110- URIE 1wcre made. The tobacco cylinders wers sitxd to be 63! mm. long and the tobacco cylinden alone had ann ' ' r,trt_ Rrn.tn:,n,/r- -,. _ t.s, aa TPSrJ, rK.k'gt. to ao I..e., i,llte ; t''"'n^.......-,.. .,--. . o ma ...n . Punewnt......-.n rcv tt.r of average resisunc!c-to-draw (aTD)i of 2 :0 in.,water: From Ihe above ii will hc norco ensnthe re,hetnnce to The,Biter srction.,wene made /0:mm- long and were eorn- draw of'ventilated ciRnrcttoq was groally Ic-rnra proving pri+cd' of, colluilo.e acetrtt,, the fllters having, oe an avcr- 70 that the ventilated ciraoctte ia en.iiy amoled. kUnat sip- ate. a RTD!of 2 8 in of water. A number of rnouthpiecxs ninunlly; a rcduetion of total parAiculnec matlcc in excess as .bov<•.n in FIGURE 6 of 1;S mm. knph were formed of 100% wns achieved in the ventilatcd as compnred with wirh 24 Rroovee,theroin, each crorn.e being about 00s0 the nonventilatcd ciparcttee inj w,de and 0.011 in deep at Ihe certter, the, mouthpiece As was prcvionsly menlioned in this des;ription„ the being, joined to the 61ter seciion, andlo tobacco cyUndcr 76 ventiLation passages in the mouthpiece pno.,idt a means

3,490,461 9 for incorporating flavorants iw the cigarette. However. theae Eavorantr also could be incorporated in the smoke paas.ge ar, well. Thua for example as seen in FIGURE 3 particles of' trxthol 125 could be incorporated in the amoke passage 1'241 The smoke passage also provides a r~ convenient place for, incorporating, smoke treating wb . atanoea such as charcoal' which is used to reduce the anwke OGP. In, the lalter instance, the charcoal could be fused to the surfaces of passage 124. It is also possible to utilize the smoke passage 124 as the p/ace where both tu a l;avorant and tobaeeo-treating material can be incord poratrtd in , tbc , eigarette. For example, a charcoal serving as a f3avor transfer agent for a fiavorant sttoh an men- tAot contained in the eharcoalieould be dispaxd'in the passage 124. 16 From the toregoing, descriptan, it wifl' be appreciated that the ventilated!cigarette of the present invention offen important advantages. It is known, that a reduction in, smoke flow through a filter media is accompanied!by an i increase in the efficiency of' particulate filtration of the: 40 media. The introduction of ventilating air streams as pro- vided' by the present inveotion, produces such,a redua tion in smoke: flow and! does it without baving, the fresh a'v, invest the filter media which action would otherwise reduce the available area of the media filtering the smoke. 4:r' Thus, the full' area of' the media serves to filter the smoke and it does so under conditions of reduced smoke Sow with consequent• greater overall removal of smoke particulates. It will thus be seen that' the objecta set forth above, 30 among those made apparent from the preceding descrip- tion, are efficiently attained and, since certain changes may be made in the above construction and differrntt embodiments of' the inventiorr could be madt without, departing from the scope thereof: it is intended,that all' 35 matter contained in the above description or shown in t~- t=co>=;..snyis:, drawie: shalli be: interpreted 1 as il!vs+ trative and'not in a limiting sense. Whal is claimed 'rs•' 100 said filter element and said mouthpiece being joined with said I tobacco cylinder by a wrapping of tipping paper, overlaVing saidlporous wrapping, said lipping: paper, having a circle of pcrforations therein com- municating at least some of said grooves with at- mosphere., 2. The cigarette of', claim I wherein i caid! grooves are uniformly circularly %paced around said' body and arc of art:uate section shape, the intervening portion of the outer surface of,xaidi body, between adjacent grooves being,in the form of pcakK formed in said body outer surface by the intersection, of' the arcuate surfaces of adjaeentt grooves, said porous paper tightly, engaging said peaks. 3. The cigarette of claim 2 wherein said 51ter elementt iaa plug of cellulose acetate:, 41 In a filter, eigarette including:a tobaceo section eom- prisedlof tobacco:enclosed with a paperwrapper, a filter element at one end'of said tobaeco section, and a ventilation mouthpiece connected with said I filter ele- menfi and embodying ventilation passages through which dilution i air is drawn di'rectHy from the atmos- phere to the smoker's mouth without admixture of' the same with smoke drawn from the tobacco sec- tion through said filter element when the cigarette is puHed, the improvement of said mouthpiece com- prising , a thin-walled tubular body of thermoplastic material having a, central passage through,which the smoke drawn during puffing pasces„ said body having a plurality of pascages formed in the outer surface thereof and extending longitudinally, oof said body. and being joined to said! filter element with a: porous wrapping paper pervious to air paRaagc lherelhrough„ said filter ettment and, said! mouthpiecro, being joined with said tobacco cylindtr, by, a wrapping of tipping papcr overlaying said porous wrapping; saiJ tipping paper having a circle of perforations therein eorn- municating ac least some of said' passares through said porous wrapping with atmosphere. 1. In a filter cigarette including a tobacco sectionieom- 401 5. The eigarette of claim:4 wherein said passages eom+ prised of tobacco enclosedlwith a paper wnpper„ prise grooves uniformly circularly spaced around said a filter element at one end' of said tobacco section, body,tho intervening portion oGthe outer surface of r.iJ a c y rnosphere, to rhe smoker's mouth without admix- ture of, the san.e with smoke drawn from the tobacco section through said filter element when the cigarette rn is puffed, the improvement'of said mouthpiece eom- prising' a tbin-walltd tubular body of' extrudedi thermoplastic materiallhaving a central passage of circular section and body betwcen iari/acent grooves barng in the form of pcsks ventilation mouthpiece connected with said'filter e1e- formed in said body outer surface by the interse,tion cf ment andl embodying ventilation passages through 45 the adjacent grooves, said porous paper tightly engaging from the at- Sa'dI peaX.5' h dilution air is drawn directl whi through which the, smoke dtawn during puffing , passes, said body, having a plurality of,groovos formed in tbc outer .urtace thereof and extending longi- tudinally of said body, saidl grooves being circularly spaced aroundlsardlbody,,,said body being joined to said filter'elemenC with a wrapping of porous paper, nU each groove being spaad' from adj$cent groovcs, by an interxening,portion of the outer surface:of,said body which is cngaFed l tightly by said porous paper there- by to isolate each groove from,the grooves adjacent, References Cited U1+lITED STATES PATENTS 3.410.275 1 l/196'8 Tucker ---__----__---, 131-10 1,71g,1'22 6Z'19291 De Shon ------------- 13'I-9 3.323,325 61'1967' Miller ----------- 13 t-198' X 3.324.862 6J'1967' fae Simone -------- 131-10:5' 3.390,684 7Y't1968', H!udnell -------------- 131-9 FOREIK:Mi PATENTS 240.650 9Ji'9621 Auatr.Qia. 668.052 8J1'963' Canada. 1.034,663 4J1953' France. 1.349.992 12/1'963' France. LUCIE H. LAUDENSLAGER, Primary Examiner U.S. Cl. X.R:_ thcrcto, 131-9, 198 ~ ~ ~.