Patent Publication Number: US-2003234023-A1

Title: Filter feed on a filter tipping machine

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001] The present application claims priority under 35 U.S.C. §119 of German Patent Application No. 102 27 933.0, filed on Jun. 21, 2002, the disclosure of which is expressly incorporated by reference herein in its entirety.  
       BACKGROUND OF THE INVENTION  
       [0002] 1. Field of the Invention  
       [0003] The present invention relates to a feed device of filter rods in a machine of the tobacco processing industry, in particular a filter tipping machine, with at least two magazines for filter rods and a machine of the tobacco processing industry, in particular a filter tipping machine. The present invention further relates to a process for feeding filter rods from at least two magazines in a machine of the tobacco processing industry, in particular a filter tipping machine.  
       [0004] 2. Discussion of Background Information  
       [0005] In Great Britain Application No. GB-A-2 267 021, a filter tipping machine is described in which filter rods are removed respectively from two magazines. After the removal of a first filter rod, this filter rod is cut in the middle and pushed apart in an axially crosswise manner. Subsequently a second filter rod from the other magazine is placed in the middle between the sections of the first filter rod. This filter rod arrangement is subsequently cut, staggered and shuffled respectively on drums. This process—cutting, staggering, and shuffling of the filter pieces—is repeated and thus carried out twice in total. The resulting combination filter from the two different filter rods is subsequently transferred to an assembly drum with cigarette rods.  
       [0006] A filter feed in a filter tipping machine is likewise described in U.S. Pat. No. 5,984,851, in which the filters or filter pieces are also cut, staggered and shuffled several times in succession on the drums. Single or dual filters can be fed to cigarette groups by the disclosed feed device.  
       SUMMARY OF THE INVENTION  
       [0007] The present invention provides a simple and variable feed of filter rods from at least two magazines, whereby the filter rods from the respective magazine can be guided separately for as long as possible on their respective conveyor path to the cigarette groups.  
       [0008] In particular, a feed device of the type mentioned at the outset includes magazines arranged such that the conveyor planes of the filter rods are staggered in a parallel manner. The term “conveyor plane” means in particular a plane in which filter rods are removed from a magazine and in which the filter rods are transported in the conveyor direction. From a geometric point of view, the filter rods are respectively arranged perpendicular to the conveyor plane. Several drums can be arranged in the conveyor plane itself so that the filter rods can be transferred from one drum to another.  
       [0009] The invention is based on the idea of utilizing the structural depth of a machine by a spatial staggering of the magazines for the filter rods, so that filter rods are removed from the magazines at the same time. In this manner, the removal points are spatially shifted, i.e., do not lie in one conveyor plane. According to the invention, the conveyor planes of the filter rods are then arranged in a parallel staggered manner to one another.  
       [0010] Several conveyor sections of the filter rods are preferably provided.  
       [0011] In a first conveyor section, relative to the conveyor direction of the filter rods, advantageously at least one removal drum is provided for the filter rods from the magazines and at least one first staggering drum is provided.  
       [0012] In a second conveyor section preferably at least one first shuffling drum is provided.  
       [0013] Furthermore, in particular in the second conveyor section at least one staggering drum and/or at least one second shuffling drum are provided.  
       [0014] In a third conveyor section advantageously at least one accelerating drum or staggering drum is provided.  
       [0015] The invention is based on the further idea that filter rods from the magazines are guided respectively side by side up to the last or penultimate drum of the filter feed parallel and side by side, i.e., staggered axially lengthwise. In order to make this possible, the width of the feed device or the filter tipping machine is important for the arrangement of the drums. Within the scope of the invention it is provided that the drums of the second conveyor section transport the filter rods parallel and side by side respectively at the same time. This means that the filter rods are shuffled at the same time and side by side at least on a first shuffling drum.  
       [0016] In further possible following and variable process flows of the second conveyor section, the filter rods can be staggered at the same time and side by side on the common drum and shuffled onto the likewise common shuffling drum or assembled to produce a filter. The drums of the first conveyor section can be embodied jointly for the filter rods from the different magazines. Moreover, depending on the spatial arrangement of the magazines, the respective drums can be embodied individually for each conveyor path of the filter rods. In the latter case it is necessary for the removal drums and possibly also the staggering drums to be arranged spatially staggered relative to one another for each magazine.  
       [0017] Via the feed device according to the invention, a high variability is achieved since both combination filters and a higher production capacity can be achieved. Utilizing the structural spatial conditions of a machine, the filter rods from different magazines are transported in respectively different planes or on different conveyor paths. According to the invention, the number of pivoted shafts is thereby kept as low as possible, so that the machine drive can be constructed in a simpler manner.  
       [0018] According to an advantageous further development of the invention it is proposed that at least one second staggering drum is arranged in the first conveyor section. After a first staggering in the first conveyor section, at least one second staggering of the filter rods takes place. The distance between two filter rods is thus enlarged in the conveyor direction.  
       [0019] Furthermore, the drums of the first conveyor section advantageously feature essentially the same width.  
       [0020] A reliable guidance of the filter rods in the second conveyor section is ensured if the drums of the second conveyor section essentially feature the same width.  
       [0021] The drums of the first conveyor section and the drums of the second conveyor section preferably feature the same width. In this case the filter rods from all the drums can be guided in the filter tipping machine at the same time, parallel and staggered side by side. To this end the drums are equipped with elongated axes.  
       [0022] In an advantageous further development the removal drums for the first magazine and the removal drum for the second magazine are arranged staggered parallel to one another.  
       [0023] Moreover, according to an alternative embodiment a common removal drum is provided for the first magazine and for the second magazine.  
       [0024] Furthermore according to an advantageous further development of the invention, the staggering drums of the first conveyor section are arranged staggered parallel to one another.  
       [0025] Furthermore, at least one cutting device is provided in the first conveyor section, preferably on at least one removal drum.  
       [0026] In order to produce combination filters, preferably at least one cutting device is provided in the second conveyor section, preferably on the first shuffling drum.  
       [0027] Moreover, the machine of the instant invention for the tobacco processing industry, in particular a filter tipping machine, is equipped with a feed device according to the invention, as described above.  
       [0028] With the process of the type described at the outset, the present invention includes guiding the filter rods in conveyor planes staggered parallel to one another.  
       [0029] The filter rods are advantageously removed respectively from the magazines by a removal drum in the conveying direction in a first conveyor section and staggered by at least one first staggering drum.  
       [0030] The filter rods are preferably shuffled on a first shuffling drum in a second conveyor section.  
       [0031] In a further development of the invention in the second conveyor section the filter rods are staggered by a staggering drum and/or at least partially shuffled by a second shuffling drum.  
       [0032] Furthermore, it is proposed in a further development that the filter rods are fed to cigarette groups in a third conveyor section by an accelerating drum or a staggering drum.  
       [0033] In order to achieve still greater variability in the filter feed in a machine, in the first conveyor section the filter rods are staggered at least one more time by at least one second staggering drum.  
       [0034] Moreover, the filter rods in the first conveyor section, preferably on the removal drum, are preferably cut so that several smaller filter pieces are produced from one removed filter rod.  
       [0035] Combination filters can be easily produced in particular if in the second conveyor section at least part of the filter rods are cut, in particular on the staggering drum.  
       [0036] Before the filter rods or filter pieces are guided further to the accelerating drum and thus to the cigarette groups, according to the invention the filter rods are assembled in the second conveyor section to produce filter groups so that the different filter pieces from several, in particular two, magazines produce one combination filter.  
       [0037] The present invention is directed to a feed device of filter rods in a machine of the tobacco processing industry that includes at least two magazines for filter rods arranged such that conveyor planes of the filter rods from the at least two magazines are parallel each other and staggered.  
       [0038] According to a feature of the invention, the at least two magazines can be staggered in a conveyor direction of the filter rods.  
       [0039] In accordance with another feature of the present invention, the machine can include a filter tipping machine.  
       [0040] The feed device can also include a plurality of conveyor sections for processing the filter rods.  
       [0041] Further, the feed device can include at least one removal drum arranged in a first conveyor section to receive the filter rods from the at least two magazines, and at least one first staggering drum structured and arranged to stagger the filter rods relative to the conveyor direction. Further, the feed device may include at least one second staggering drum arranged in the first conveyor section. The drums of the first conveyor section can have essentially a same width. Still further, the removal drum for a first of the at least two magazines and a removal drum for a second of the at least two magazines can be arranged parallel one another and staggered. At least one cutting device may be located in the first conveyor section, and the at least one cutting device can be located on the at least one removal drum. Moreover, a common removal drum may be provided for the first magazine and for the second magazine. At least one cutting device can be located in the first conveyor section, and the at least one cutting device may be located on the at least one removal drum. Further still, at least one cutting device may be located in the first conveyor section, and the at least one cutting device can be located on the at least one removal drum. The staggering drums of the first conveyor section can be arranged parallel each other and staggered.  
       [0042] According to still another feature of the invention, at least one first shuffling drum can be located in a second conveyor section.  
       [0043] Further, at least one staggering drum can be included, such that at least one of the at least one staggering drum and the at least one second shuffling drum are located in the second conveyor section. The drums of the second conveyor section can have essentially a same width. Moreover, the drums of the first conveyor section and the drums of the second conveyor section have a same width. At least one cutting device may be located in the second conveyor section, and the at least one cutting device can be located on the first shuffling drum.  
       [0044] In accordance with a further feature of the invention, one of at least one accelerating drum or a staggering drum may be located in a third conveyor section.  
       [0045] According to still another feature of the instant invention, a machine of the tobacco processing industry can include the above-described feed device. Further, the machine can include a filter tipping machine.  
       [0046] The present invention is directed to a process for feeding filter rods from at least two magazines. The process includes guiding the filter rods in at least two conveyor planes that are parallel to one another and staggered.  
       [0047] According to a feature of the instant invention, the at least two conveyor planes can be staggered in a conveyor direction.  
       [0048] According to another feature of the invention, the filter rods may be guided in a machine of the tobacco processing industry. Further, the filter rods can be guided in a filter tipping machine.  
       [0049] In accordance with another feature of the present invention, the process can also include removing the filter rods in the at least two magazines by at least one removal drum, and staggering the removed filter rods with at least one first staggering drum. The process can also include shuffling the filter rods in a second conveyor section, downstream of the first conveyor section, on a first shuffling drum. Further, the process can include assembling the filter rods into filter groups in the second conveyor section. Still further, the process may include staggering the filter rods at least one additional time in the first conveyor section by at least one second staggering drum. Moreover, the process can include cutting the filter rods in the first conveyor section. The filter rods can be cut on the removal drum.  
       [0050] Further, the process can also include at least one of staggering the filter rods in the second conveyor section by at least one staggering drum, and shuffling the filter rods at least in part by a second shuffling drum. Moreover, the process can include feeding the filter rods to cigarette groups located in a third conveyor section, downstream of the second conveyor section, by one of an accelerating drum or staggering drum. The process may also include cutting at least a part of the filter rods on the staggering drum in the second conveyor section.  
       [0051] According to another feature of the invention, the process can include feeding the filter rods to cigarette groups by one of an accelerating drum or staggering drum.  
       [0052] In accordance with still another feature, the invention is directed to a machine for performing the above-described process.  
       [0053] The present invention is directed to a feed device that includes a first magazine and a second magazine. The first and second magazines is structured to supply first and second cylindrical elements for conveyance in parallel conveyance directions, and the first and second magazines are structured and arranged to orient axes of the first and second cylindrical elements crosswise to the conveyance direction. Further, the first and second magazines are arranged so that the first cylindrical rods are supplied to be axially offset with respect to the second cylindrical rods.  
       [0054] In accordance with a feature of the invention, at least one removal device may be structured to receive the first and second cylindrical rods from the first and second magazines. The at least one removal device may be common to the first and second magazines. Moreover, the at least one removal device can include a first removal roll associated with the first magazine and a second removal roll associated with the second magazine, and the first and second removal rolls may be oriented parallel each other but be axially offset from each other.  
       [0055] According to another feature of the invention, the first and second cylindrical elements can be supplied by the first and second magazines are different from each other. The first and second cylindrical elements can be different types of filter rods.  
       [0056] The present invention is directed to a machine for feeding filter rods. The machine includes at least two magazines structured and arranged to supply filter rods along parallel conveyance paths that are spatially offset from each other in a conveyance direction.  
       [0057] The instant invention is directed to a process for feeding cylindrical elements. The process includes supplying first and second cylindrical elements in parallel conveyance directions. The first and second cylindrical elements are supplied so that their respective axes are oriented crosswise to the conveyance direction. The process also includes arranging the first and second cylindrical rods so that the first cylindrical rods are axially offset with respect to the second cylindrical rods.  
       [0058] According to a feature of the invention, the process can also include receiving the first and second cylindrical rods in at least one removal device. The at least one removal device can be common to the first and second magazines. Moreover, the at least one removal device can include a first removal roll associated with the first magazine and a second removal roll associated with the second magazine, and the first and second removal rolls can be oriented parallel each other but be axially offset from each other.  
       [0059] In accordance with still another feature of the invention, the supplied first and second cylindrical elements can be different from each other. The first and second cylindrical elements may be different types of filter rods.  
       [0060] Moreover, an apparatus for forming a filter can include at least two magazines and a first conveyance section having at least one removal drum to receive the cylindrical elements, at least one cutting device to cut the cylindrical elements, and at least one staggering drum to stagger the cut cylindrical elements. The apparatus also includes a second conveyance section having at least one shuffling drum to rearrange the staggered cut cylindrical elements, at least one second staggering drum to second stagger the shuffled and staggered cut cylindrical elements; and at least one second shuffling drum to shuffle the second staggered, shuffled and staggered cut cylindrical elements. The apparatus also includes a third conveyance section comprising an accelerating roll structured and arranged to position the second shuffled, second staggered, shuffled and staggered cut cylindrical elements.  
       [0061] The present invention is directed to a process for feeding filter rods, that includes supplying filter rods along parallel conveyance paths that are spatially offset from each other in a conveyance direction.  
       [0062] In accordance with still yet another feature of the invention, a filter tipping machine includes the above-noted apparatus and also includes a device for joining a cut tobacco rod to each end of each second shuffled, second staggered, shuffled and staggered cut cylindrical elements, and a filter cutting device arranged to divide each second shuffled, second staggered, shuffled and staggered cut cylindrical elements to form two filter tipped cigarettes. Further, the second conveyance section can include at least one second cutting device arranged to second cut at least part of the shuffled and staggered cut cylindrical elements. The accelerating roll positions a shuffled and staggered cut cylindrical element between two second cut, shuffled and staggered cut cylindrical elements.  
       [0063] Other exemplary embodiments and advantages of the present invention may be ascertained by reviewing the present disclosure and the accompanying drawing. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0064] The present invention is further described in the detailed description which follows, in reference to the noted plurality of drawings by way of non-limiting examples of exemplary embodiments of the present invention, in which like reference numerals represent similar parts throughout the several views of the drawings, and wherein:  
     [0065]FIG. 1 illustrates a filter tipping machine with a feed device according to the prior art;  
     [0066]FIG. 2 illustrates a detailed view of a feed device according to the prior art;  
     [0067]FIG. 3 illustrates an exemplary embodiment of a feed device according to the instant invention;  
     [0068]FIG. 4 illustrates a plan view of an arrangement of the two magazines in accordance with the invention;  
     [0069]FIG. 5 illustrates a second exemplary embodiment of a feed device according to the invention;  
     [0070]FIG. 6 diagrammatically illustrates a positioning of the filter segments according to the device depicted in FIG. 3;  
     [0071]FIG. 7 diagrammatically illustrates a positioning of the filter segments according to the device depicted in FIG. 5; and  
     [0072]FIG. 8 illustrates an exemplary embodiment of a feed device in accordance with the instant invention for a double-track filter tipping machine. 
    
    
     DETAILED DESCRIPTION OF THE PRESENT INVENTION  
     [0073] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show structural details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.  
     [0074] In the following description of the figures the same or the same kind of elements are designated by the same reference numbers, so that a new introduction of them is omitted.  
     [0075]FIG. 1 shows the front view of a known filter tipping machine of the MAX type by Hauni Maschinenbau AG, Hamburg, Germany. This machine features the following details: an intake drum  111  transfers the cigarettes produced in a cigarette production machine to two staggering drums  222 , which deliver the cigarettes fed in a staggered manner in staggers and in rows of two each with a gap between the cigarettes to an assembly drum  333 .  
     [0076] The filter rods arrive from a magazine  40  on a removal drum  60 , are there cut into filter plugs of double unit length, staggered on a staggering drum  70 , aligned by a shuffling drum  80  to produce a row of plugs arranged one behind the other and placed by an accelerating drum  90  into the gaps of the cigarette rows on the assembly drum  333 . The cigarette-filter-cigarette groups are pushed together and accepted by a transfer drum  110 .  
     [0077] A coating paper web  120  drawn from a coating paper bobbin  130  is glued by a gluing device  140  and then cut into coating strips in a cutting device  160  on a severing drum  170  by the knives of a knife drum  180 . The severed coating strips are adhered to the cigarette-filter-cigarette groups on the transfer drum  110  and rolled around the cigarette filter groups on a rolling drum  190 .  
     [0078] The finished double filter cigarettes are fed via a drying drum  210  to a severing drum  220  and on this are made into individual filter cigarettes by the filter plugs being cut in the middle. A turnover device  230  turns the filter cigarette row around and at the same time transfers it into the filter cigarette row running through that has not been turned around. The filter cigarettes reach an ejecting drum  260  via a testing drum  240 . A distributing drum  280  interacting with a braking drum  270  places the filter cigarettes on a distributing belt  290 .  
     [0079]FIG. 2 shows an enlarged view of a feed device  50  according to the prior art. The filter rods are removed from a magazine M by removal drum  11  and cut by the cutting device  12  that comprises a knife  12 . 1  and a grinding disk  12 . 2  for regrinding the knife  12 . 1 . Subsequently the cut filter pieces are staggered on the staggering drum  13 , transferred to a shuffling drum  21  on which the filter pieces are arranged in one row one behind the other. The filter rods are subsequently transferred to an accelerating drum  31  and fed to the cigarette groups.  
     [0080]FIG. 3 shows a first exemplary embodiment of a feed device according to the invention. Filter rods are removed from two magazines M 1 , M 2  at the same time by a removal drum  11 . The magazines M 1  and M 2  are arranged staggered relative to one another in the direction perpendicular to the drawing plane (cf. FIG. 4).  
     [0081]FIG. 4 shows the spatial arrangement of the magazines M 1  and M 2  in a diagrammatic plan view. The magazines M 1  and M 2  with their conveyor planes F 1 , F 2  are offset or staggered parallel to one another. The filter rods in the magazines are removed from the magazines M 1 , M 2  by the removal roller  11  at two points arranged one behind the other in the circumferential direction. The removal of the filter rods from the magazines M 1  and M 2  takes place at the same time in the conveyor planes F 1 , F 2  staggered parallel with respect to one another. The filter rods are arranged respectively axially lengthwise and at a predetermined distance from one another. Within the scope of the invention the magazines M 1 , M 2  can also be embodied one behind the other, so that the filter rods can be removed from the magazines M 1 , M 2  at the same point in the circumferential direction of the removal drum.  
     [0082] After the removal, the filter rods are respectively cut at the cutting devices  12 . The cut filter rods are staggered on a staggering drum  13  and subsequently on another second staggering drum  15 . The removal drum  11  and the staggering drums  13 ,  15  form the first conveyor section I of the filter rods. The filter pieces staggered twice are pushed together in the following conveyor section II into respectively one row of filter pieces one behind the other. In other words: two separate rows of filter pieces are formed on a common shuffling drum  21 . In order to produce combination filters, one row of the filter pieces is cut with a cutting device  22 . The cutting device  22  comprises a knife  22 . 1  that is kept continuously sharp with a grinding disk  22 . 2 . The two rows of filter pieces formed on the shuffling drum  21  are staggered by the staggering drum  23  and transferred to the second shuffling drum  25 . The filter pieces are shuffled once again on the shuffling drum  25  so that the staggered shuffled filter pieces are assembled into a filter of double-unit length by the accelerating drum  31 , which is embodied as a staggering drum.  
     [0083] In an alternative embodiment the production capacity can be increased while omitting the cutting device  22  if filter rods of the same type are removed from the magazines M 1  and M 2 .  
     [0084] The acceleration and staggering of the filter pieces taken over by the shuffling drum  25  forms the third conveyor section III of the filter plugs or pieces. Whereas in the conveyor sections I and II the drums feature respectively two rows of filter rods or pieces, only one row of filter pieces or filters is still present on the accelerating drum  31 .  
     [0085]FIG. 5 shows another alternative exemplary embodiment according to the invention in side view. In the first conveyor section I the filter rods from the magazine M 1  are hereby transported separately from the filter rods from the magazine M 2  to the common drums of the conveyor sections II and III. The conveyor section I of the filter rods from the magazine M 1  takes place via the removal drum  11 . 1  and the two staggering drums  13 . 1  and  15 . 1 . The conveyor drums—removal drum  11 . 2 , staggering drum  13 . 2 , staggering drum  15 . 2 —staggered spatially, axially crosswise relative to these drums, convey the filter rods from the magazine M 2  to the common shuffling drum  21  of the second conveyor section II on a conveyor path staggered in a parallel manner.  
     [0086] Analogously to the first exemplary embodiment according to FIG. 3, in this second example the filter rods from the magazines M 1  and M 2  are likewise transported respectively separately and parallel to one another in the respective conveyor section I. The following drums of the conveyor sections II and III correspond to the drums from the first exemplary embodiment (FIG. 3).  
     [0087]FIGS. 6 and 7 show respectively diagrammatic arrangements of filter rods or pieces according to their position in the respective drums from FIG. 3 or FIG. 5. For reasons of clarity the filter rods from the two magazines M 1 , M 2  are graphically represented in a different way. The filter rods  100  not cross-hatched are removed from the magazine M 1  and the cross-hatched filter rods  200  from the magazine M 2 . The filter rods  100 ,  200  are arranged respectively perpendicular to their conveyor plane F 1 , F 2 .  
     [0088] After the removal of the filter rods  100 ,  200  by the common removal drum  11 , these filter rods  100 ,  200  are cut by cutting devices  12  into filter pieces of equal length. The filter pieces from both magazines M 1 , M 2  are subsequently staggered. Depending on requirements, it is necessary to stagger the filter pieces only once or several times, so that the cut filter pieces  100 ,  200  can be arranged in one row on the first shuffling drum of the conveyor section II. The parallel rows of filter pieces  100 ,  200  on the shuffling drum  21  are staggered in an axially crosswise manner by staggering drum  23  so that on a following second shuffling drum  25  of the conveyor section II the filter pieces  100 ,  200  from the two magazines M 1 , M 2  can be arranged in one row. Subsequently a staggering and feed to the cigarette groups occurs by the common accelerating drum or staggering drum  31  in the third conveyor section III.  
     [0089] In the exemplary embodiment according to FIG. 6 the production capacity of the filter tipping machine can be increased since by the double-wide drums of the conveyor sections I and II accordingly twice as many filter pieces can be fed to the cigarette groups.  
     [0090] Filter pieces  100 ,  200  are removed from the magazines M 1  and M 2  by removal drum  11 . The filter rods  100 ,  200 , with 6-fold unit length in the present case, are cut into six filter pieces of equal length by the cutting device  12 . Within the scope of the invention it is possible, depending on the cutting devices, for multiple filter pieces, preferably 4- to 12-fold, to be cut. The cut filter pieces are respectively staggered on the following first staggering drum  13 , whereby respectively two filter pieces per conveyor plane are arranged at a predetermined distance from one another in a flute of the staggering drum  13 . The filter pieces are staggered once again by the second staggering drum  15  so that only one filter piece is arranged per conveyor plane in each flute of the staggering drum. The procedures described above are carried out in a parallel manner both for the filter pieces  100  in the conveyor plane F 1  and for the filter pieces  200  in the conveyor plane F 2 . In the following conveyor plane II the filter pieces are first arranged on a common shuffling drum  21  in one row, staggered by a staggering drum  23 . On the following shuffling drum  25  the filter pieces are formed into one row of filter pieces lying one behind the other in the different conveyor planes F 1 , F 2 . In the following conveyor section III the filter pieces from the different conveyor planes F 2  are accelerated or staggered.  
     [0091] According to the exemplary embodiment in FIG. 7, the filter rods  100 ,  200  from the two magazines M 1 , M 2  are conveyed parallel to one another in the conveyor section I. Conveying the filter rods or pieces  100 ,  200  is carried out by spatially separate drums staggered axially crosswise and staggered parallel to one another (cf. FIG. 5). The filter rods  100 ,  200  are removed from the magazines M 1  and M 2  respectively by the removal drums  11 . 1 ,  11 . 2  and cut. Depending on the use and the filter rod length, the filter rods  100 ,  200  are subsequently staggered respectively in their conveyor planes F 1 , F 2  several times by staggering drums  13 . 1 ,  13 . 2 ,  15 . 1 ,  15 . 2  in the conveyor section I. Subsequently the filter pieces  100 ,  200  from the two magazines are respectively arranged one behind the other in one row on the common shuffling drum  21  of the conveyor section II. In order to produce combination filters, the filter pieces  200  of one row are cut in the middle by a cutting device  22 . Subsequently a staggering occurs on the staggering drum  23  and a shuffling of the filter pieces on the shuffling drum  25 . The assembly of the double-length and symmetrical combination filter occurs on the staggering or accelerating drum  31  of the conveyor section III.  
     [0092] In order to make it possible to guide the filter rods  100 ,  200  from at least two magazines M 1 , M 2  parallel next to one another in the conveyor planes F 1 , F 2  up to the last or penultimate drum of the filter feed, it is provided according to the invention to carry out the filter feed on widened drums utilizing the spatial depth of a filter tipping machine. The filter rods are hereby guided in different conveyor planes.  
     [0093]FIG. 8 shows in diagrammatic form another example of a feed device for a double-track filter tipping machine. The filter rods  100  or  200  are removed by removal drums  11 . 1 ,  11 . 2  from the magazines M 1 , M 2  staggered parallel to one another and cut several times with the aid of the cutting devices  12  arranged on the removal drums  11 . 1 ,  11 . 2 , so that during transfer of the cut filter pieces from the removal drums  11 . 1 ,  11 . 2  to the staggering drums  13 . 1 ,  13 . 2 , filter pieces or filter plugs of double unit length are prepared that are placed in the gaps of cigarette rows or cut tobacco rods on an assembly drum  41 .  
     [0094] After a first staggering of the filter pieces of double unit length on the first staggering drums  13 . 1  or  13 . 2 , the filter pieces are staggered a second time on the staggering drums  15 . 1  or  15 . 2  in the first conveyor section I. In the following second conveyor section II the filter pieces are arranged in the conveyor planes F 1  or F 2  in one row on the shuffling drum  21 . Afterwards the parallel rows of filter pieces are transferred to an accelerating drum  31  of the third conveyor section III and staggered on this accelerating drum  31  or staggering drum, so that the filter pieces are arranged parallel and staggered relative to one another in the conveyor planes F 1  or F 2 .  
     [0095] After the staggering of the filter pieces in the third conveyor section III, the filter pieces are fed to the double-wide assembly drum  41  of the double-track filter tipping machine and placed in the gaps between two cut tobacco rods  400  arranged axially crosswise relative to one another, so that cigarette-filter piece-cigarette groups are formed. With a double-track filter tipping machine two filter pieces of double unit length are placed parallel or parallel in a staggered manner between two cut tobacco rods respectively.  
     [0096] In an alternative of a double-track filter tipping machine (not shown here) the installation of the accelerating drum or staggering drum  31  in the third conveyor section is omitted, so that the filter rods of the shuffling drum  21  arranged side by side in parallel rows are transferred directly to an assembly drum in the second conveyor section. On this assembly drum in total four cut tobacco rods are arranged in two parallel rows in the axially crosswise direction of the drum.  
     [0097] For a double-track filter tipping machine, the shuffling drum  21  of the second conveyor section II and/or the accelerating drum  31  of the third conveyor section III feature the double width. In a further exemplary embodiment not shown here the drums of the first conveyor section III are likewise embodied with the double width.  
     [0098] With a double-track filter tipping machine the filter rods are conveyed respectively parallel and side by side in two parallel conveyor planes up to the double-width assembly drum, so that the production capacity of a double-track filter tipping machine is increased by the feed device according to the invention. Moreover, the number of pivoted shafts of the transport drums is kept low, so that the drive of the machine is simple in construction.  
     [0099] It is noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention. While the present invention has been described with reference to an exemplary embodiment, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.  
     List of Reference Numbers  
     [0100]                                                       11, 11.1, 11.2   Removal drum            12   Cutting device            12.1   Knife            12.2   Grinding disk            13, 13.1, 13.2   Staggering drums            15, 15.1, 15.2   Staggering drums            21   Shuffling drum            22   Cutting device            22.1   Knife            22.2   Grinding disk            23   Staggering drum            25   Shuffling drum            31   Accelerating drum            40   Magazine            41   Assembly drum            50   Feed device            60   Removal drum            70   Staggering drum            80   Shuffling drum            90   Accelerating drum           100   Filter rods           110   Transfer drum           111   Intake drum           120   Coating paper web           130   Coating paper bobbin           140   Gluing device           160   Cutting device           170   Severing drum           180   Knife drum           190   Rolling drum           200   Filter rods           210   Drying drum           220   Severing drum           222   Staggering drum           230   Turnover device           240   Testing drum           260   Ejecting drum           270   Braking drum           280   Distributing drum           290   Distributing belt           333   Assembly drum           400   Cut tobacco rods           F1   Conveyor plane 1           F2   Conveyor plane 2           M   Magazine           M1   Magazine 1           M2   Magazine 2           I   Conveyor section I           II   Conveyor section II           III   Conveyor section III