Abstract: A modular apparatus for smoking article assembly comprises a plurality of modules and a plurality of respective interface units, and a controller to control said plurality of modules via said interface units. The modular apparatus is configured to cause received rods of smokable material to undergo a first sequence of operations. The modular apparatus can be reconfigured so as to cause received rods of smokable material to undergo a second sequence of operations, different to the first sequence of operations. The first and second sequences of operations respectively form at least part of first and second processes for assembling smoking articles, each smoking article comprising one of said rods of smokable material, which is smoked in use.

Abstract: There is provided a method and apparatus for manufacturing filters for smoking articles. The method comprises providing hollow tubes (309) of filter material. Each hollow tube has an outer diameter and an inner diameter. The method further comprises providing filter inserts (205). Each filter insert (205) has a first portion having a cross sectional dimension larger than the inner diameter of the hollow tube. The method further comprises inserting each filter insert (205) into a hollow tube (309) of filter material. During inserting, the first portion of the filter insert (205) engages with the hollow tube (309) to retain the filter insert in the hollow tube.

Abstract: The object of the invention is an apparatus for filling transport containers (1) with rod-like articles of the tobacco industry, provided with an area (2) receiving the rod-like articles in the form of a mass flow, a rod-like article storage area (3) comprising at least two sidewalls, a filling unit (4) constituting the bottom wall of the storage area for transferring the rod-like articles from the storage area to the transport container, a lowering conveyor (5) working together with the filling unit (4), adapted to lower the transport container while filling with the rod-like articles. The apparatus is characterised by being further provided with a counting module (6) designed to count the rod-like articles in the transport containers, adapted so that the individual rod-like articles being in the transport container are counted.

Abstract: Embodiments of a water detection apparatus are disclosed that can detect characteristics of food products. The apparatus may include a conveying mechanism configured to move a food product through an aperture in the apparatus, a transmitter coil configured to transmit a signal within the aperture, and a receiver coil configured to receive the signal altered by the food product, and a signal processing unit configured to determine an output value associated with the food product moving through the aperture. The output value can be based, at least in part, on the signal and the altered signal. The output value can corresponds to a characteristic of the food product.

Abstract: A feeder device of products with reduced longitudinal dimensions in machines for the tobacco industry comprises a main feeder roller which rotates continuously and which has a plurality of active peripheral flutes acting to hold a respective product; the main roller is designed to pass the products on to respective flutes on corresponding handling rollers of a main line of feed of the products in the machine the device is associated with; the device comprises means for continuously filling the peripheral flutes of the main roller, the filling means comprising a plurality of feeding and passing-on means, in particular at least first means and second means for feeding and passing on corresponding groups of the products to corresponding groups of flutes located one after the other on the main roller.

Abstract: A valve device for changing over the mass flow of rod-like articles of the tobacco industry, between at least two non-parallel conveying channels feeding the rod-like articles and a conveying channel receiving the rod-like articles or between a conveying channel feeding the rod-like articles and at least two non-parallel conveying channels receiving the rod-like articles, comprising at least one rotatable element changing over the mass flow comprising a through channel for the transfer of the mass flow between the feeding conveying channel and the receiving conveying channel, with the rotatable change-over element having different angular positions relative to its principally horizontal axis of rotation which allow connecting individual feeding and receiving channels, characterized in that in the rotatable change-over element (4) at least one conveying unit (5) situated at the wall (7a, 7b, 7c, 7d) of a through channel (7) of the rotatable change-over element (4) is disposed, with the conveying unit (5) havin

Abstract: After the start of manufacturing, the control system provisionally calculates a cutting moment necessary to obtain a proper length of the filter rod and compares it with the basic static relationship calculated earlier, after which it makes a gradual adjustment of the cutting moment in relation to the calculated basic static relationship and determines an averaged cutting point of a filter roller considering the information about actual dimensions of the segments and their actual positioning in the roller, conveyed by a sensor. During manufacturing, the averaged cutting point is compared by the control system with the cutting moment and, in order to keep the length tolerance of the filter rod, dynamically corrected considering the information about the segments currently conveyed by the sensor.

Abstract: A package coding system for a cigarette manufacturing process is provided. An imprinting device imprints an alphanumeric code on each of a series of cigarette packages. A conveyor device conveys the cigarette packages in a feed direction. An inspection device is operably engaged with the conveyor device and inspects the alphanumeric code imprinted on each cigarette package conveyed by the conveyor device to determine whether any of the cigarette packages includes a defect in the imprinted alphanumeric code, and thus comprises a defective cigarette package. A removal device is operably engaged with the conveyor device and is configured to be in communication with the inspection device. The removal device is configured to remove the defective cigarette package from the series of cigarette packages conveyed by the conveyor device in response to identification thereof by the inspection device. An associated method is also provided.

Abstract: Tobacco products (2), typically cigarettes, are manufactured on a line (1) including a cigarette maker (3) and a filter tip attachment machine (4), both equipped with a number of production devices and units connected to respective master control units (82, 83) and visual display units (84). Key characteristics of sample tobacco products (2) are tested by an auxiliary inspection unit (45) forming part of a monitoring and control system associated with the manufacturing line (1), and connected up to a common interface network (48) so that signals reflecting the monitored characteristics can be fed back to a number of control units (81) associated respectively with the devices and the units of the line (1) on which the characteristics in question depend, and programmed to pilot corrective actions in response to the feedback signal.

Abstract: Apparatus and method for filling under gravity from a hopper (9), a storage device (2) for articles that has the form of a columnar cavity between opposed side walls with a mass flow of mutually parallel rod-shaped articles descending from the hopper, a cavity-filling device (12) that alternates in use between a closed configuration that blocks a downward flow of the said articles through the device and an open configuration that allows flow of the articles through the device, the device being movable in translation, in alternate upward and downward strokes within the cavity, being in the closed configuration on the downward stroke and in the open configuration on the upward stroke.

Abstract: A smoking article provides one or more sheets of material that can be rolled and packaged, at least one sheet including cellulose. In one embodiment, cellulose and tobacco sheet material are separately rolled layers that can optionally be wrapped around a form casing (or pre-rolled inside) and then packaged. In another embodiment, the sheet is a laminated sheet of tobacco and cellulose layers that can be optionally wrapped around (or pre-rolled inside) a form casing. These sheets can be filled with custom tobacco to make one or more new cigars for an end user. In another embodiment, a complete cigar filled with tobacco material can be disassembled by an end user to produce tobacco and cellulose sheets, enabling the end user to form two new cigars using his or her own custom tobacco.

Abstract: The invention provides a system for sensing a cigarette filter, comprising: a plurality of rotary conveyance drums (12) delivering a first cigarette filter and second cigarette filters into which the first cigarette filter is divided by a cutter; two sensors (18) disposed adjacent to the rotary conveyance drum (12) to detect the second cigarette filters; an opto coupler connected to the two sensors (18) and operated by AND logic; a HIP connected to the opto coupler, it controlling a device of supplying cigarette filters to reject a cigarette having defects; and, a PLC connected with the HIP, it controlling the device of supplying cigarette filters, wherein the two sensors (18) detect active charcoal filters located at both ends of the second cigarette filters, the HIP controls the device such that the cigarette having defects are rejected when signals sensed by the sensors (18) are different from signals sensed from the normal active charcoal filter, the PLC controls the operation and stop of the device by pe

Abstract: A feeder system and associated method are provided for feeding rod components of a tobacco product, particularly a rod-shaped, cylindrical, or stick-type tobacco product, wherein such a tobacco product may be intended to be used in a smokeless manner. A hopper is configured to receive a plurality of rod components therein. A separator device is operably engaged with the hopper and is configured to receive one of the plurality of rod components at a time therefrom. An orienting device is operably engaged with the separator device. The orienting device is configured to receive the one of the plurality of rod components in a first orientation and to direct the one of the plurality of rod components into a second orientation, different from the first orientation, and toward a subsequent process.

Abstract: An apparatus for manufacturing rod-shaped smoking articles which includes a forming section (10) for forming a material layer (K) made up of particles of smoking material and delivering the formed material layer (K); a wrapping section (20) disposed downstream of the forming section (10), for forming a rod (KR) by wrapping the material layer (K) in a web (W); a pair of guide blocks (54) disposed in the terminal end portion of the forming section (10), for guiding the material layer (K); a web shield (56) disposed downstream of the guide blocks (54) as viewed in the direction of delivering the material layer (K), for separating the material layer (K) and the web (W) from each other; a tongue (40) disposed in the start end portion of the wrapping section (20); and injection openings (64, 70, 76) provided to the guide blocks (54), the web shield (56) and the tongue (40), for injecting a liquid flavor additive into the material layer (K).

Abstract: A method of making segmented filters including moving substantially identical segments of one type at uniform rate to a transferring element, which places each segment separately on an exit path. Setting of the filter segments in a repeating group on the exit path is accomplished by delay in collecting segments by a transferring element in each module of the apparatus. Uniform positioning is effected using the transferring element which includes uniformly spaced drivers, and non-uniform positioning is effected using the transferring element with non-uniformly spaced drivers. The apparatus includes a guiding element positioned adjacent to a cutting drum and has a wall closing a channel for a set of segments drawn out of a flute on the drum. The filter set is led through the channel with the aid of a dog of a chain and is advanced by a worm surface of a pushing together drum.

Abstract: The present invention relates to a method and apparatus for forming two filters in a two-up configuration. The apparatus includes a feed wheel 18, an assembly wheel 20, a take-off wheel 22, and a flipping wheel 24. According to the method of the invention, tubes 10 are loaded from the feed wheel 18 to the assembly wheel 20 where one hollow end of the tubes is filled. The half-filled tubes 10? are then transferred to take-off wheel 22 and then to a flipping wheel 24 where the tubes are flipped. The half-filled and flipped tubes 10? are returned to vacant positions on the feed wheel and transferred back to the assembly wheel so that the remaining hollow ends can be filled. The filled tube 10?? is transferred to a take-off wheel 22, where it is then removed from the take off wheel 22 using a stripper and/or additional wheels for further processing.

Abstract: A method, system and apparatus for registering different objects in filter rod shaped articles, for example as found in the tobacco processing industry. The method, system and apparatus can include a rod containing cigarette filter components; one or more sensors that determine the constitution of segments of the rod and transmits one or more signals regarding segments of the rod; a processor that receives the one or more signals from the one or more sensors, performs a comparison between the one or more signals and known data and transmits a signal based upon results of the comparison; and an ejector that receives the signal from the processor and removes any segment of the rod that does not conform with the known data.

Abstract: In order to treat cut tobacco so as to loosen and homogenize the same, a tobacco stream (12, 16) passes through a plurality of processing stations (18, 19, 20), in the region of which the tobacco is loosened, during transportation, with the aid of different processing arrangements. The tobacco stream or main stream here is divided up into a plurality of smaller sub-streams during treatment.

Abstract: A method and apparatus of forming portions of tobacco, and of removing the same by an conveyor having at least one path of holders for a respective portion, in which the holders are filled with individual portions of the contents at least two filling lines of one or more filling stations, and, prior to the individual filling operations, individual portions of the contents are weighed and weighed portions that satisfy the predetermined conditions—acceptable portions—are filled cyclically into the holders and weighed portions that do not satisfy the predetermined conditions are detected and ejected as defective portions, characterized by components and steps of (a) following detection of a defective portion, that holder which the filling line originally predetermined for filling this holder would have filled with the contents portion, on which the defective portion is based, had the contents portion satisfied the predetermined conditions—defective-portion holder—is sensed, and a filling line other than that ori

Abstract: A filter component includes a catalyst surrounded by a thermally insulative carbon fiber composite. The catalyst can catalyze the chemical reaction of selected gaseous constituents of a gas stream. During catalysis, the catalyst can reach high temperatures. The carbon fiber composite can contain heat generated during the catalysis within the filter component and thereby reduce heat transfer to the surroundings. The filter component can be used in smoking articles. Methods of making and using the filter-component and methods for treating mainstream tobacco smoke are also provided.

Abstract: An apparatus and method for post-threshing inspection and sorting of tobacco lamina is described and which includes a separation conduit which receives a source of post-threshed tobacco lamina and other contaminants for inspection and sorting, and wherein a source of pressurized air causes the tobacco lamina to move along the separation conduit past an inspection station where it is optically inspected to identify undesirable tobacco lamina or other contaminants; and a downstream reject station is provided which responds to a sorting signal provided by the inspection station and which removes unwanted or undesirable tobacco lamina and other contaminants from an air stream so as to provide a resulting product which is substantially free from contaminants or other defects.

Abstract: A feeder system and associated method are provided for feeding rod components of a tobacco product, particularly a rod-shaped, cylindrical, or stick-type tobacco product, wherein such a tobacco product may be intended to be used in a smokeless manner. A hopper is configured to receive a plurality of rod components therein. A separator device is operably engaged with the hopper and is configured to receive one of the plurality of rod components at a time therefrom. An orienting device is operably engaged with the separator device. The orienting device is configured to receive the one of the plurality of rod components in a first orientation and to direct the one of the plurality of rod components into a second orientation, different from the first orientation, and toward a subsequent process.

Abstract: This invention relates to a smoking article (1) and to a method for manufacturing a smoking article. The smoking article comprises a smoking material rod (2), at least one filtering element (3) and a wrapper (4), said wrapper connects the at least one filtering element and the smoking material rod; the smoking material rod and the at least one filtering element are spaced apart and this space is enclosed by the wrapper to form a chamber (6); and the wrapper comprises at least one ventilation opening (5).

Abstract: Described herein is a method and apparatus for transferring rods, or tubes, comprising feeding a plurality of rods into a hopper, feeding the rods through a hopper using agitation and gravity to align the rods in a single-file stacked configuration, and transferring the rods with pushers on a continuous cable so that that the rods may be transferred for insertion in the tobacco column. This method and apparatus may utilize one or more drums for transferring rods from the hopper to the pushers on the continuous cable.

Abstract: Cigarettes are manufactured using modified automated cigarette making apparatus. Those cigarettes possess smokable rods having paper wrapping materials having additive materials applied thereto as patterns. The additive material can be applied as a coating formulation in an off-line manner to a continuous paper sheet web that is later used for cigarette manufacture. The additive material can be applied as a coating formulation in an on-line manner to continuous paper web moving through an operating cigarette making machine. The coating formulation is applied to the paper web using roll applicator techniques, ink jet printing techniques or electrostatic precipitation techniques. Liquid coating formulation are curable, and are virtually absent of solvent or liquid carrier. Radiation, such as ultraviolet or electron beam radiation, is used to solidify and fix polymerizable liquid components of the coating formulation that have been applied to the paper web.

Abstract: A device and a process for forming and cutting portions of tobacco from a strand of tobacco is provided with an element for feeding the strand of tobacco, such as at least one belt or roll, as well as a cutting element, such as a knife. The device may have additional feeder bands for advancing the strand of tobacco to the position for cutting, and may be under the control of a computerized control system.

Abstract: Cigarette filters are supplied to the infeed portion (1) of a filter tip attachment machine by a unit (2) comprising rollers (11) which divert the filters (3) into an upstream hopper (8), and a channel (9) carrying the filters (3) from the upstream hopper (8) to a downstream hopper (4) where they are released to the infeed portion (1) of the machine. Located between the infeed rollers (11) and the feed channel (9) is a variable volume storage buffer (16) with a movable wall (28) attached to the top branch (23) of a conveyor belt (24); the Belt is driven by a motor (27) interlocked to sensors (31) which monitor and control the level of the mass of filters (3) occupying the upstream hopper (8), so that the size and capacity of the buffer (16) can be adjusted to accommodate fluctuations in the flow of filters through the hopper (8).

Abstract: In a cigarette maker, shredded tobacco passes through a feed and transport section toward a unit by which divided particles of the tobacco are gathered into at least one stream providing the filler for cigarettes. By positioning one or more sensors either along the feed and transport section or at a point upstream, relative to the feed direction of the tobacco, it becomes possible to identify the type of tobacco being handled at any given moment, so that when production schedules include a changeover from one brand to another, supervisors can be certain that the right type of tobacco has been selected, and ensure that different types of tobacco will not mingle.

Abstract: Filter cigarettes are turned out by a combination unit composed of a cigarette maker coinciding with a substantially horizontal first leg, also a filter tip attachment machine coinciding with a second leg, of which the downstream machine is equipped with an infeed roller turning on a horizontal axis lying transverse to the second leg. The first and second legs extend parallel one with another and are linked by a transfer unit rotatable about an essentially vertical center axis and incorporating a plurality of holders, each designed to take up two cigarette sticks from an outfeed end of the upstream machine and direct them through a semi-circular path to an infeed end of the downstream machine.

Abstract: The invention provides a system for sensing a cigarette filter, comprising: a plurality of rotary conveyance drums (12) delivering a first cigarette filter and second cigarette filters into which the first cigarette filter is divided by a cutter; two sensors (18) disposed adjacent to the rotary conveyance drum (12) to detect the second cigarette filters; an opto coupler connected to the two sensors (18) and operated by AND logic; a HIP connected to the opto coupler, it controlling a device of supplying cigarette filters to reject a cigarette having defects; and, a PLC connected with the HIP, it controlling the device of supplying cigarette filters, wherein the two sensors (18) detect active charcoal filters located at both ends of the second cigarette filters, the HIP controls the device such that the cigarette having defects are rejected when signals sensed by the sensors (18) are different from signals sensed from the normal active charcoal filter, the PLC controls the operation and stop of the device by pe

Abstract: The present invention provides a smoke filter material, a filter and cigarettes with the filter, as well as methods for their manufacture. The filter material substantially is of an organic material and comprises covalently bound active thiol groups substantially free of complexing agents.

Abstract: The present invention is directed at various apparatus and methods for forming a sealed hollow core tobacco rod. The methods of the invention at least comprise passing a trimmed tobacco column and paper under a tongue that widens and flattens the column and paper; forming the tobacco and paper into a cylindrical shape; forming an inner hollow core; maintaining the hollow core shape; and outputting the sealed hollow core tobacco rod.

Abstract: A unit for feeding cigarettes to a packer machine is equipped with a hopper containing a mass of cigarettes and a device serving to compensate the depletion of the mass as groups of cigarettes are removed from the hopper and directed into a plurality of boxes carried and transported by a conveyor. The compensating device is located internally of the hopper and comprises an articulated mechanism designed to create a movable wall, also a pair of lateral conveyors converging toward the articulated mechanism, its operation being coordinated with that of a further device by which the groups of cigarettes are removed from the hopper, in such a way as to vary the capacity of the hopper according to the volume of cigarettes removed.

Abstract: Cigarette sticks are transferred from a cigarette maker to a filter tip attachment by a unit that includes a conveying roller made to rotate in a first feed direction and furnished with channels aligned on a second direction transverse to the first direction. Each channel accommodates a single stick, directed onto the conveying roller by way of an impeller device, and presents two longitudinal areas designed to make contact progressively with corresponding longitudinal areas of the stick as it advances into the channel, the effect being to create a chamber between the stick and the part of the channel lying between the two longitudinal areas of contact, which is connected to a source of negative pressure.

Abstract: A transfer apparatus is provided for the transfer of rod-shaped articles, in particular filter rods, from a conveying apparatus for transverse axial conveying of the articles to a conveying apparatus for longitudinal axial conveying of the articles or vice versa. The directions of transport of the conveying apparatuses running transversely to each other. The transfer apparatus includes a rotatably driveable conveyor with at least one receptacle. Each receptacle is adapted to take at least one article off the conveying apparatus for transverse axial conveying of the articles and discharging the or each received article to the conveying apparatus for longitudinal axial conveying or vice versa. Each receptacle traverses a variable running circle. Several receptacles are evenly distributed over the circumference of the conveyor, all the receptacles being radially displaceable synchronously during operation of the apparatus.

Abstract: Conveyor drum for receiving axially aligned articles that are conveyed in a cross-axial direction toward the conveyor drum. Conveyor drum includes a separation device for changing a longitudinal axial spacing of the articles by a predetermined longitudinal axial separation, and an adjustment device structured and arranged to adjust the predetermined longitudinal axial separation. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: During the production of cigarettes, but in particular in the region of a cigarette-packaging machine, a comparatively large amount of tobacco accumulates as waste. This is specifically removed by arranging suction-extraction elements and/or conveying-away elements for tobacco particles (19) in the region of elements and subassemblies of the machines with increased accumulation of tobacco. The air with tobacco particles (19) which has been extracted by suction is led through a tobacco separator (45), which has a separating element (48) for receiving the tobacco particles. From time to time, these are removed from the tobacco separator (45) and recycled into the production process.

Abstract: A supply unit and a user unit employed in the manufacture of tobacco products, typically cigarettes and the like, are linked by a duct along which a mass of the cigarettes is advanced from the outfeed of the supply unit toward the infeed of the user unit. The advancing mass of cigarettes is parted at an intermediate zone of the duct either by rods or by a pair of frames, in such a way as to create a void that will accommodate a trolley directed into the duct from a housing by an elevator; once inside the duct, the trolley proceeds to push the mass of cigarettes from the intermediate zone toward the inlet of a hopper in such a way as to empty the duct completely, for example when changing over from one brand of cigarette to another. To advantage, the trolley is composed of two articulated structures so that its geometry and dimensions can be varied to match the variations in geometry and depth of the duct.

Abstract: A cigarette packer (1) incorporates a station at which cigarettes (2) are formed into groups (12) and from which the groups (12) are advanced by a first conveyor (13) along a first feed path (P) toward a wrapping station (16). A first inspection device (24) located along the first feed path (P) detects initially whether or not there are any defective cigarettes (2) in each group (12), and a second inspection device (45) located along a second conveyor (30) then identifies the single defective cigarettes (2) detected by the first device (24); the second inspection device (45) operates in conjunction with a rejection unit (46) by which defective cigarettes (2) are removed from the second conveyor (30).

Abstract: The invention relates to a device and a method for marking cigarette packets, comprising a transport device for conveying at least one cigarette packet to a marking station for marking cigarette packets, and the following features: the transport device grasps a batch of adjacent, aligned cigarette packets and moves them to the marking station, where the transport device releases the batch; and the released cigarette packets are marked on at least one exposed area.

Abstract: A device for combining groups of at least two different types of filter segments for producing multi-segment filters in the tobacco industry in a continuous process includes a plurality of independent functional units that are each designed as a module.

Abstract: Distributor device and method of distributing that includes an input device for the input of a product stream, a preliminary distributor for distributing, measuring out and loosening the product stream, a store for receiving the product stream, an accumulating shaft, and a sifter for separating fractions of the product stream. The distributor device also includes a conveying element for transporting the product stream from the store to the accumulating shaft, and at least one external delivery device for delivery of at least one additional component. The at least one external delivery device is arranged between the store and the sifter relative to a transport direction of the product stream. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A method is disclosed for treating tobacco products to remove toxins emitted during smoking of tobacco which comprises the steps of:

Abstract: An automatic cigarette processing machine having a control unit and a number of successive work stations, each having a respective number of operating devices; for each work station, the control unit has at least one respective controller directly connected to the work station and for controlling all the operating devices at the work station substantially independently of the other controllers.

Abstract: A cigarette packer (1) incorporates a station at which cigarettes (2) are formed into groups (12) and from which the groups (12) are advanced by a first conveyor (13) along a first feed path (P) toward a wrapping station (16). A first inspection device (24) located along the first feed path (P) detects initially whether or not there are any defective cigarettes (2) in each group (12), and a second inspection device (45) located along a second conveyor (30) then identifies the single defective cigarettes (2) detected by the first device (24); the second inspection device (45) operates in conjunction with a rejection unit (46) by which defective cigarettes (2) are removed from the second conveyor (30).

Abstract: The present invention includes a central control system and method for fine tuning a cigarette manufacturing process. A measurement device captures measurements of particular cigarette properties. The measurement data is sent to and stored in a central database. Once sufficient measurement data has been stored, the data is loaded into an optimization program that outputs optimized controlled parameters that may be used by individual control systems to better control the properties of the cigarettes during manufacture. The central control system and method may be used with both off-line and in-line measurement devices, and can communicate and control such devices regardless of the manufacturer thereof.

Abstract: Double-filter cigarettes are produced by inserting different filter components between two rods of tobacco. This is attained by inserting filter components of different final lengths, obtained from separate supplies and processed along separate feed paths, successively between the tobacco rods.

Abstract: A shower of tobacco particles is fed into the upper end of a downwardly sloping and downwardly tapering funnel-shaped part of a conveyor wherein the particles gather into a flow of interlaced particles. Successive increments of the flow are acted upon by one or more jets of air issuing from at least one nozzle which loosens successive foremost increments of the flow prior to admission into a tobacco filler rod forming unit in a cigarette rod making machine.

Abstract: A cigarette filter assembly machine wherein a rolling unit is defined by a rolling drum and a guide drum coaxial with each other and connected to each other in angularly-fixed, axially-sliding manner; and wherein the rolling drum has a number of suction rollers (54) rotated, with respect to the rolling drum, by respective independent drive units; the guide drum has a number of semicylindrical cavities, each coaxial, and defining a relative rolling channel, with a relative suction roller; the suction rollers receive, with a first spacing, relative groups of component parts of a relative double cigarette; and each drive unit rotates the relative suction roller to roll the relative group inside the relative rolling channel and to extract a relative double cigarette from the relative rolling channel, and reverses the relative suction roller to release the relative double cigarette with a second spacing smaller than the first spacing.

Abstract: A supply unit and a user unit employed in the manufacture of tobacco products, typically cigarettes and the like, are linked by a duct along which a mass of the cigarettes is advanced from the outfeed of the supply unit toward the infeed of the user unit. The advancing mass of cigarettes is parted at an intermediate zone of the duct either by rods or by a pair of frames, in such a way as to create a void that will accommodate a trolley directed into the duct from a housing by an elevator; once inside the duct, the trolley proceeds to push the mass of cigarettes from the intermediate zone toward the inlet of a hopper in such a way as to empty the duct completely, for example when changing over from one brand of cigarette to another. To advantage, the trolley is composed of two articulated structures so that its geometry and dimensions can be varied to match the variations in geometry and depth of the duct.