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Publication numberUS3032041 A
Publication typeGrant
Publication dateMay 1, 1962
Filing dateDec 16, 1957
Priority dateJan 10, 1957
Also published asDE1109071B
Publication numberUS 3032041 A, US 3032041A, US-A-3032041, US3032041 A, US3032041A
InventorsRaymond Lanore
Original AssigneeDecoufle Usines
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tobacco-manipulating machines
US 3032041 A
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Description  (OCR text may contain errors)

May 1, 1962 Filed Dec. 16, 1957 R. LANORE 3,032,041

TOBACCO-MANIPULATING MACHINES 5 Sheets-Sheet 1 KR N ix /NVE/V OR 5) y l a filow/s A 7' TOP/VEKS May 1, 1962 R. LANORE, 3,032,041

TOBACCO-MANIPULATING MACHINES Filed Dec. 16, 1957 3 Sheets-Sheet 2 May 1, 1962 R. LANORE TOBACCO-MANIPULATING MACHINES 3 Sheets-Sheet 3 Filed Dec. 16, 1957 //VVE/V7'OQ W W B) 7% I ATTO'QIVEY United States Patent U 3,032,041 TOBACCO-MANIPULATING MACHINES Raymond Lanore, Paris, France, assignor to Usines Decoufl S.A., Paris, France, a French company Filed Dec. 16, 1957, Ser. No. 702,905 Claims priority, application France Jan. 10, 1957 13 Claims. (Cl. 131-61) This invention concerns improvements in or relating to tobacco-manipulating machines (for example continuous rod cigarette-making machines) in which a continuous tobacco filler is formed, which filler (for example after being enclosed in a paper Wrapper) is to be cut at intervals to form individual tobacco articles such as cigarettes.

It is sometimes desired to form a tobacco filler in which the tobacco is denser at parts where it is to be out than at other parts along its length, in order that the tobacco articles formed by cutting the filler may be more densely filled with tobacco at their end portions than at other parts.

It is usual to form a tobacco filler from a relatively loose stream of tobacco, which is compressed laterally so as to give it a reduced and uniform cross-sectional size. Thus if there is more tobacco at some parts of the stream than at others, the compressed filler will have corresponding parts of greater and less density, and accordingly, one known way of forming such a filler is to add increments of tobacco at suitable intervals along the stream.

According to the present invention there is provided a method of forming a tobacco filler which has more tobacco at desired portions than at others, which comprises the steps of forming a tobacco stream, and removing tobacco from the stream in such a way as to leave more tobacco at the said desired portions than at others. The stream thereafter may be subjected to lateral compression to form a filler of substantially constant cross-sectional size.

Further according to the invention there is provided a method of forming a tobacco filler which is denser at desired portions than at others, which comprises the steps of supplying tobacco to a travelling surface in sufficient quantity to form a stream whose average depth is greater than required, removing tobacco so as to reduce the average depth of the stream to a desired extent, in such a way that the depth at the said desired portions is greater than at other portions, and laterally compressing the stream to substantially constant cross-sectional size. For example, the depth of the stream may be reduced along the whole of its length but by a smaller amount at the said desired portions than elsewhere.

Further according to the invention there is provided, in a tobacco-manipulating machine, means for forming a tobacco filler which has more tobacco at desired portions than at others, comprising means to form a tobacco stream on a travelling surface, and a trimming device arranged to remove surplus tobacco from the stream in such a way as to leave more tobacco at the said desired portions than at others. Means may be provided to compress the stream after such a trimming to substantially constant crosssectional size.

The said trimming device may comprise a pair of rotatable discs to which engage the stream from opposite sides so as to co-operate to determine the depth to which the stream is trimmed, the said discs having recessed parts which co-operate to allow the stream to retain a greater depth of tobacco at the said desired portions than at others.

The said discs may have co-operating edges which closely approach each other to separate surplus tobacco from the stream, the said recessed parts having similarly co-operating edges which are a greater distance from the said travelling surface than are the edges of the other parts of the discs.

The trimming device may further comprise a member verse walls 3, 4 of a discharge hopper.

trimming zone.

(e.g. a rotating brush) arranged to engage and sweep away surplus tobacco separated from the stream by the edges of the discs and of the recessed parts.

Apparatus in accordance with the invention will now be described by way of example with reference to the accompanying drawings, in which:

FIGURE 1 is a diagrammatic longitudinal section showing the upper or feed portion of a cigarette-making machine in which a tobacco filler is formed;

FIGURE 2 is a longitudinal section showing diagrammatically, on a larger scale, a stream of tobacco as orig inally formed;

FIGURE 3 is a plan view of a trimming device, and

FIGURE 4 is a vertical section taken upon the line IVIV of FIG. 3.

Referring to FIGURE 1, tobacco is fed by a distributor 1 on to an endless belt conveyor 2 between the trans- The stream of tobacco travels on the band 2 towards the cigarette-rodfor-ming mechanism.

The stream of tobacco formed on the conveyor 2 is uneven in height, being characterised by alternating troughs and crests, and its longitudinal section is shown diagrammatically in FIGURE 2, in which the unevenness of its height is considerably exaggerated. I

The stream of tobacco contains moretobacco than required for making cigarettes having the desired average weight, and the excess tobacco is trimmed olf at the region indicated by the reference 5. This trimming step consists in separating and moving away from the stream any tobacco above the level 11 (FIG. 2), in those portions of the stream where it is desired to have a normal density of the filler, and above the level hl in the portions where a greater tobacco density is desired. These last-mentioned portions are normally spaced from one another by a distance 1 (FIG. 2) equal to the length of one cigarette, so that in each cigarette the tobacco will be somewhat denser at both ends. However, if it is desired to increase the density of the tobacco at only one end of the cigarette the thicker portions may be spaced apart by a distance equal to two cigarettelengths.

As a rule, the high-density portions have a density 10% higher than the normal density of the other portions of the roll; this result is obtained by simply having h1=l.l h. The length of these thicker portions is usually about In the embodiment described herein this height h is about A" and therefore the height 111 is about or nearly The stream of tobacco is carried along by the travelling band 2 moving in a horizontal channel 6, FIGURES 3 and 4, and having its edges 7 guided and held by side plates 8. The initial portion of this channel is tapered to compress the tobacco therein, and the next portion has its edges parallel and spaced about apart in the The trimming device for separating and discharging the excess tobacco comprises two horizontal rotary discs 9, having chamfered edges, and rotating in opposite directions as shown by the arrows in FIG. 3. The linear velocity of the outer edges of these discs is about 15% higher than the linear velocity of the stream of tobacco. These outer edges, although shown in the drawings as apparently in contact, are separated at their nearest points by a gap which may be between .004" and .008". A cylindrical rotary brush 10, about A" thick, overlies the discs 9 and is mounted in a shaft 11 rotatably driven at high speed and set at an angle with respect to the direction of flow of the tobacco, as shown. brush is positioned in the zone where the discs are nearest to each other and brushes against the upper surfaces of the discs at that zone, thereby engaging and removing surplus tobacco which is above the discs and completing the separation of that tobacco from the tobacco beneath This 3 the discs. The tobacco thus removed is driven by the brush between the walls 12 and 13 Which guide it on to a travelling band (not shown) by which the excess tobacco is returned to the distributor.

The discs 9 rotate at a velocity in revolutions per minute which is equal to one-fourth of the number of cigarettes produced per minute. The outer peripheral parts of the discs are not at a uniform level but are formed with four raised portions 14, whose under-surfaces are recessed as shown in FIG. 4, They are spaced 90 apart and have raised edges situated -.08 above the level of the remaining portions of the discs th'er'ebetween. The two discs are so disposed that as they rotate, successive pairs of raised portions 14 register with one another as shown in FIGURE 3. These raised portions are bounded by straight edges 19 set at suitable angles relative to radii terminating at the outer peripheral edges of the disc. These angles are suitably chosen so that when two raised or recessed portions 14 register with each other, their leading edges 19 are momcntaiily in line with each other as shown in FIGURE 3. l

The raised or recessed portions 14 thus pass over the stream of tobacco at intervals each corresponding to one cigarette-length. Moreover, when two portions 14 register with each other on the line IV-IV of FIGURE 3 they are directed as shown with their leading edges substantially parallel to the plane of the rotary brush 10.

-Since the discs 9, with their recessed portions 14, co-

operate to determine the depth to which the stream is trimmed, and since the edges of the portions 14 are at a greater distance from'the lower part of the band 2 than are the edges of the other parts of the discs, it will be seen that the recessed portions 14 allow the stream to retain a greater depth of tobacco than do the remaining parts of the discs.

This brush 10 is so adjusted as to be substantially flush with the lower portions of the upper faces of the discs 9. When the raised portions 14 move beneath the brush 10 the bristles of the brush are slightly bent, see FIGURE 4, and the excess tobacco is removed from these raised portions without difiiculty.

Thus the stream of tobacco in its subsequent travel on the band 2 has at the desired spaced intervals portions containing a greater quantity of tobacco than the remaining zones located therebetween.

This stream of tobacco is subsequently caused to "pass under a'wheel 15 which compresses it laterally and forms a tobacco filler of uniform cross-sectional size in which the tobacco at the said desired portions is denser than at others.

This rod is then delivered on to a paper web 16 passing over a small roller 17 on to an endless band 18 by which the paper Web supporting the filler of tobacco is carried along through the actual rod-forming mechanism. The cigarette rod so formed is then separated into individual cigarettes by cutting through the denser portions.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a tobacco-manipulating machine, apparatus for forming a tobacco filler having denser portions at predetermined spaced positions than elsewhere, comprising means to form a tobacco stream, trimming means to remove tobacco bodily from the stream and to reduce the total quantity of tobacco in the stream while leaving more tobacco at said spaced positions than therebetween, and compressor-means acting on the stream to subject tobacco in the stream to lateral compression and to effect greater compression on tobacco at said spaced positions than on tobacco therebetween, the said trimming means and the said compressor-means cooperating to reduce the stream to a substantially uniform cross-sectional size while leaving a greater and more compressed quantity 'of tobacco at the said spaced positions than elsewhere.

2. In a tobacco-manipulating machine, apparatus for forming a continuous tobacco filler having denser portions .at predetermined spaced positions along its length than between said positions, comprising means to form a moving stream of tobacco containing more tobacco than is required in the filler to be produced, conveyor-means to convey said stream endwise, a trimming device adjacent the stream and operative thereon to remove bodily excess tobacco therefrom, so as permanently to reduce the total quantity of tobacco contained in the stream to the quantity required in the filler, and compressormeans operative on the tobacco stream to apply lateral pressure to tobacco therein, the said trimming device being arranged to reduce the whole of those portions of the stream Which occur between the said spaced positions, to a smaller quantity of tobacco per unit length than that to which it reduces those portions which occur at the said spaced positions, and the said compressor-means being arranged to eifect a greater lateral compression and densification of tobacco in the said portions occurring at said spaced positions than in portion occurring between said spaced positions, the trimming device and compressor-means thereby cooperating to reduce the stream to a filler of substantially uniform cross-sectional size but having more tobacco at the said spaced positions than elsewhere.

3. Apparatus as claimed in claim 2, wherein the said trimming device comprises tobacco-removing means 0perative at a predetermined distance from the conveyor means to remove, from portions of the stream occurring between the said spaced positions, all tobacco extending beyond said predetermined distance from the conveyor means, and operative at a greater distance from the conveyor means to remove, from portions of the tobacco stream occurring at said spaced positions, only that tobacco which extends beyond said greater distance from the conveyor means.

4. In a tobacco-manipulating machine, apparatus for forming a continuous tobacco filler having denser portions at predetermined intervals alternating with less denseportions, comprising means to form a moving stream of tobacco containing an excess of tobacco along substantially its whole length, and a tobacco-removing device adjacent the path of said stream and arranged to reduce the total quantity of tobacco in the stream by removing tobacco bodily therefrom, the said tobacco-removing device comprising means operative on selected portions of the stream, spaced apart along the length of the stream, to reduce permanently the quantity of tobacco per unit length of said portions substantially to a predetermined uniform quantity, and operative on all other portions of the stream, located between said selected portions, to allow the said other portions to retain a greater quantity of tobacco per unit length than the said predetermined uniform quantity.

5. In a tobacco-manipulating machine, apparatus for forming a continuous tobacco filler having denser portions at predetermined intervals alternating with less dense portions, comprising means to form a moving stream of tobacco containing an excess of tobacco along substantially the whole of its length, a tobacco-removing device adjacent the path of said stream and operative on the stream to reduce permanently the total quantity of tobacco contained therein by removing tobacco bodily from the stream, and compressor-means operative on the stream to apply lateral pressure to tobacco therein, the said tobacco-removing device being operative on selected portions of the stream, spaced apart along the length of the stream, to reduce permanently the quantity of tobacco per unit length of said portions substantially to a predetermined uniform quantity smaller than the quantity of tobacco per unit length of all other portions of the stream occurring between said selected portions, the said compressor-means being operative to efiect a greater lateral compression and densification of tobacco in said other portions than of tobacco in said selected portions,

6. Apparatus as claimed in claim 2, wherein the said trimming device comprises a pair of rotatable discs, said discs having co-operating edge portions which closely approach each other to engage the stream from opposite sides to separate surplus tobacco from the stream, and thereby determine the depth to which the stream is trimmed, said discs having recessed parts having similarly co-operating edge portions which are a greater distance from the said conveyor means than are the edge portions of the other parts of the discs.

7. Apparatus as claimed in claim 6, comprising a rotating brush-like member arranged to engage and sweep away surplus tobacco separated from the stream by the edges of the discs and of the recessed parts, said member having yielding tobacco-engaging elements which yield when passing over the said recessed parts.

8. A continuous rod cigarette making machine having means to feed a cigarette paper web lengthwise, and comprising means to form a stream of tobacco, a tobacco removing device adjacent the path of the stream and arranged to reduce the total quantity of tobacco in the stream by removing tobacco bodily therefrom, the said tobacco removing device comprising means operative on selected portions of the stream, spaced apart along the length of the stream, to reduce the quantity to tobacco per unit length of said portions substantially to a predetermined quantity, and operative on all other portions of the stream, located between said selected portions, to allow the said other portions to retain a greater quantity of tobacco per unit length than the said predetermined quantity, thereby producing a tobacco filler having portions containing greater quantities of tobacco per unit length alternating with portions containing smaller quantities of tobacco per unit length, and means to forward the said filler onto the paper web for enclosure therein.

9. A continuous rod cigarette making machine having means to feed a cigarette paper web lengthwise, and comprising means to form a moving stream of tobacco, a tobacco removing device adjacent the path of said stream and operative on the stream to reduce the total quantity by removing tobacco bodily therefrom, compressor means operative on the stream to apply lateral pressure to tobacco therein, the said tobacco removing device being operative on selected portions of the stream, spaced apart along the length of the stream, to reduce the quantity of tobacco per unit length of said portions substantially to a predetermined quantity smaller than the quantity of tobacco per unit length of all other portions of the stream occurring between said selected portions, and the said compressor means being operative to effect a greater lateral compression and densification of tobacco in said other portions than of tobacco in said selected portions, whereby a tobacco filler is produced containing denser and less dense portions in alternation, and means to deliver said filler containing denser and less dense portions onto the said paper web for enclosure therein.

10. A continuous rod cigarette making machine, comprising means to form a moving tobacco stream, tobacco removing means to reduce selectively the total quantity of tobacco in the stream by removing tobacco bodily therefrom, the said tobacco removing means being operative on the stream to leave a greater quantity of tobacco per unit length of the stream at regularly spaced positions therealong than between said positions, rod forming means, including means to feed a paper web lengthwise, to shape the said stream to cigarette rod shape and crosssectional size and to wrap the shaped stream in said paper web, thereby forming a continuous wrapped cigarette rod containing denser tobacco portions at said spaced positions than therebetween, and cutting means to divide the wrapped rod into lengths, said cutting means being timed to cut the rod through denser tobacco portions.

11. A continuous rrd cigarette making machine, comprising means to form a moving stream of tobacco compressor means acting on the stream to effect lateral compression thereon, and tobacco removing means to reduce the total quantity of tobacco in the stream by bodily removal of tobacco therefrom, said compressor means being operative to make the tobacco denser and more compressed at regularly spaced positions along the stream than between said positions, said trimming means being operative by bodily removal of tobacco to reduce the stream to a smaller quantity of tobacco per unit length of the stream between the said positions than at the said positions, rod forming means, including means to feed a paper web lengthwise, to shape said stream to cigarette rod shape and cross-sectional size and enclose it in said paper web to form a continuous cigarette rod containing denser tobacco portions at said spaced positions than therebetween, and cutting means to divide the wrapped rod into lengths, said cutting means being timed to cut the rod through denser tobacco portions.

12. In a tobacco-manipulating machine, apparatus for forming a tobacco filler having denser portions at predetermined spaced intervals than elsewhere, comprising means to form a tobacco stream containing more tobacco than is required, conveyor means to convey the said stream endwise,'a trimming device arranged to remove excess tobacco from the stream, and compressor means to compress the trimmed stream laterally to substantially uniform cross-section, wherein the said conveyor means and the said trimming device are arranged in cooperation to provide between them a larger space for tobacco in each of these portions of the stream which occur at the said spaced positions, than in those portions of the stream which occur between the said spaced positions, whereby those portions of the stream which occur at the said spaced positions have, immediately after trimming, a greater volume of tobacco per unit length than do those portions occurring between the said spaced positions.

13. In a tobacco-manipulating machine, apparatus for forming a tobacco filler having denser portions at predetermined spaced intervals than elsewhere, comprising means to form a tobacco stream containing more tobacco than is required, conveyor means to convey the said stream endwise, a trimming device arranged to remove excess tobacco from the stream, and compressor means to compress the trimmed stream laterally to substantially uniform cross-section, wherein the said trimming device and the said conveyor means cooperate to determine the volume of tobacco per unit length of the stream immediately after trimming, and wherein one of them is recessed to allow a greater volume of tobacco per unit length to be retained in those portions of the stream which occur at the said spaced positions, than in portions which occur between the said spaced positions.

References Cited in the file of this patent UNITED STATES PATENTS 969,992 Smith Sept. 3, 1910 1,721,117 Hopkins July 16, 1929 1,796,522 Hopkins Mar. 17, 1931 2,111,672 Molins Mar. 22, 1938 2,432,938 Ruau Dec. 16, 1947 2,660,177 Rault Nov. 24, 1953 2,660,178 Rault Nov. 24, 1953 2,766,758 Molins Oct. 16, 1956

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US969992 *Jan 5, 1910Sep 13, 1910James Edward SmithMethod of making cigar-bunches.
US1721117 *Mar 24, 1925Jul 16, 1929Monroe Hopkins NevilCigarette-manufacturing machinery
US1796522 *Mar 14, 1925Mar 17, 1931Honroe Hopkins NevilMethod of manufacturing cigarettes
US2111672 *Jun 29, 1936Mar 22, 1938Molins Machine Co LtdManufacture of cigarettes
US2432938 *Aug 4, 1942Dec 16, 1947Molins Machine Co LtdRod forming mechanism
US2660177 *Feb 20, 1952Nov 24, 1953Usines Deeoufle SaAutomatic tobacco feeding cigarette machine
US2660178 *Feb 14, 1949Nov 24, 1953Usines Decoufle SaFormation of the roll of tobacco in cigarette-making machines
US2766758 *Sep 29, 1955Oct 16, 1956Molins Machine Co LtdApparatus for making a continuous tobacco filler
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3170180 *Jan 14, 1963Feb 23, 1965Marengo Inv S IncSwimming pool cleaning aid
US3880171 *Dec 4, 1972Apr 29, 1975Brown & Williamson TobaccoProduction of smoking articles
US3999559 *May 23, 1974Dec 28, 1976Molins LimitedManufacture of filter-tipped cigarettes
US4210159 *Jul 20, 1978Jul 1, 1980Cir - S.P.A. - Divisione SasibTobacco trimming device
US4485826 *Apr 28, 1980Dec 4, 1984Hauni-Werke Korber & Co. KgApparatus for making fillers for rod-shaped smokers' products having dense ends
US4567902 *Aug 11, 1983Feb 4, 1986Philip Morris IncorporatedTobacco trimmer device
US4844100 *Sep 10, 1987Jul 4, 1989Korber AgMethod of and apparatus for making rod-shaped smokers' articles with dense ends
USRE30865 *Nov 16, 1978Feb 16, 1982Molins LimitedManufacture of filter-tipped cigarettes
DE3631227A1 *Sep 13, 1986Mar 24, 1988Hauni Werke Koerber & Co KgVerfahren und vorrichtung zum herstellen von zigaretten
EP0743020A1 *May 17, 1996Nov 20, 1996G.D. S.p.A.A method and a unit for the formation of a continuous cigarette rod in a cigarette manufacturing machine
WO2000054611A1 *Mar 13, 2000Sep 21, 2000Brudar MikeTrimming device
Classifications
U.S. Classification131/61.1, 131/108
International ClassificationA24C5/18, A24C5/00
Cooperative ClassificationA24C5/1814
European ClassificationA24C5/18C