|Publication number||US3152595 A|
|Publication date||Oct 13, 1964|
|Filing date||Feb 26, 1963|
|Priority date||Feb 26, 1963|
|Publication number||US 3152595 A, US 3152595A, US-A-3152595, US3152595 A, US3152595A|
|Inventors||Silberman Samuel J|
|Original Assignee||Silberman Samuel J|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (4), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Oct. 13, 1964 s. J. SILBERMAN 3,152,595
APPARATUS FOR FORMING AND WRAPPING CIGARS Filed Feb. 26, 1965 6 Sheets-Sheet l l Z T 1 -1 ENTOR. JZ/rma /'4 8590740 ATTORNEY Oct. 13; 1964 5. J. SILBERMAN APPARATUS FOR FORMING AND WRAPPING CIGARS 6 Sheets-Sheet 2 Filed Feb. 26, 1963 INVENTOR. @071/54 JJhazw/m/v ATTORNEY Oct. 13, 1964 5. J. SILBERMAN 3,152,595
APPARATUS FOR FORMING AND WRAPPING CIGARS Filed Feb. 26, 1963 6 Sheets-Sheet 3 INVENTOR. 634014452 [074 asa /mm ATTORNEY Oct. 13, 1964 s. J. SILBERMAN 3,152,595
APPARATUS FOR FORMING AND WRAPPING CIGARS Filed Feb. 26, 1965 6 Sheets-Sheet 4 1 N VENTOR. SAMUEL J5 SEQ/WAN ATTORNE y Oct. 13, 1964 5. J. SILBERMAN 3,152,595
APPARATUS FOR FORMING AND WRAPPING CIGARS Filed Feb. 26, 1963 6 Sheets-Sheet 5 INVENTOR. 0740x052 JJPLBEQMAN ATTORNEY Oct. 13, 1964 s. J. SILBERMAN APPARATUS FOR FORMING AND WRAPPING CIGARS 6 Sheets-Sheet 6 Filed Feb. 26, 1963 IIIIIIIIII/II/IIII/ I! 70b H70 70 LAM-J INVENTOR 61407052 ff/155mm ATTORNE y United States Patent 3,152,595 AFPARA'IUS FUR FGRMHNG AND WRAPPING CIGARS Samuel J. ilherrnan, 885 Park Ave., New York, N.Y. Filed Feb. 26, 1963, Ser. No. 26%,973 l2 Ciaims. (Cl. 131-59) The present invention relates generally to improvements in the field of tobacco products. It relates in particular to an improved apparatus for the continuous production of cigars and cigar-type products.
In the manufacture of cigars, the tobacco filler is generally spirally or helically wrapped in tobacco leaves or in artificial sheet tobacco. In the commercial production of cigarettes, the tobacco is enclosed by a paper tube formed of a curled band whose edges are joined along a longitudinally extending straight line. The spiral or helical wrapper which typifies cigars, as one point of difference from cigarettes, affords many advantages but has heretofore possessed the drawback of being expensive and diificult to produce requiring considerable hand labor. While machines have ben proposed for the continuous automatic production of cigars provided with helical wrappers, these machines leave much to be desired and have not been commercially accepted.
It is, therefore, a principal object of the present invention to provide an improved apparatus for the production of tobacco products.
Another object of the present invention is to provide an improved apparatus for the production of cigars.
Still another object of the present invention is to provide an improved apparatus for the automatic continuous production of cigars provided with helical wrappers.
A further object of the present invention is to provide an improved tobacco handling, forming and feeding mechanism.
Still a further object of the present invention is to provide an improved mechanism for applying a helical wrapper to a continuously advancing rod of tobacco.
The above and other objects of the present invention will become apparent from a reading of the following description, taken in conjunction with the accompanying drawings, wherein FIGURE 1 is an end, partially diagrammatic, elevational view of a tobacco forming and wrapping mecha nism embodying the present invention;
FIGURE 2 is a sectional view along line 22 in FIG- URE 1;
FIGURE 3 is a developed inside plan view of the tubular guide and the traversing bands;
FIGURE 4 is a sectional view along line 44 in FIGURE 2;
FIGURE 5 is a sectional view along line 55 in FIGURE 2;
FIGURE 6 is a sectional view along line 66 in FIGURE 2;
FIGURE 7 is an exploded perspective view of the endless feed bands;
FIGURE 8 is a perspective view of the tubular guide for the feed bands;
FIGURE 9 is a perspective view of a cigar produced by the above illustrated mechanism;
FIGURE 10 is a fragmentary sectional view similar 3,152,595 Patented Oct. 13, 1964 to FIGURE 2 of a modified form of tobacco filler rodforming mechanism;
FIGURE 11 is an inside developed view thereof;
FIGURE 12 is a sectional view along line 12.12 in FIGURE 10;
FIGURE 13 is an end, partially diagrammatic, e1evational view thereof;
FIGURE 14 is a fragmentary top plan view of a modified, tobacco feed mechanism;
FIGURE 15 is a sectional view along line 1515 in FIGURE 14; and
FIGURE 16 is a sectional view along line 16-16 in FIGURE 14.
In a sense, the present invention contemplates the provision of a feed device comprising an endless flexible band including a helical run, a longitudinally extending guide means engaging the outer face of said band along said helical run for confining said band along said helical run, and means for advancing said band along the length thereof. A plurality of the improved feed devices are employed to great advantage in a continuous cigar producing apparatus and they function to form the filler tobacco into a continuous compact rod, to advance the rod of tobacco while rotating said rod, and continuously to wrap the advancing tobacco rod helically in any desirable web. The feed devices are associated in many arrangements, and although firmly and positively handling, shaping and advancing the tobacco and wrapping the shaped tobacco, these operations can be performed gently without damaging the tobacco or the wrapper web and can uniformly produce an end product of high quality.
In accordance with one form of the present apparatus, the guide is in the form of an elongated tube having three longitudinally spaced pairs of longitudinally spaced band trailing inlet and leading outlet openings. A first endless flexible band enters the first inlet opening, traverses a first helical run of at least one convolution along the inner face of the tube and leaves through the first outlet opening; a second endless flexible resilient band enters the tube through the second inlet opening in sideby-side relationship with the first band, traverses a heli cal run along the tube inner face of less than one convolution and leaves the tube by way of the second outlet opening; and a third endless flexible resilient band enters the tube through the third inlet opening, traverses a third helical run along the tube inner face of at least one convolution and leaves the tube through the third outlet opening. The helical runs delineate a substantially continuous tubular passageway with a mini-mum of openings and are preferably of the same pitch. The first and second bands are advanced at the same speed and the third band is driven so as to be advanced at the same or greater speed than the first and second bands, all the bands advancing in the same direction. Means are provided for feeding tobacco into the end of the tube, for guiding a wrapper web into overlying relationship with the inner face of the first band and the adjacent border of the second band, for applying an adhesive to the border of the wrapper web, and for cutting the wrappd rod of tobacco as it leaves the tube into predetermined lengths. A screw mechanism may be employed for feeding the tobacco into the end of the tube as one form of feed. However, the tobacco may be advantageously fed into the apparatus by depositing it into the inner face of the third band as it approaches the third inlet opening. In order to better handle and shape the tobacco a fourth endless band is provided which enters and leaves the tube through corresponding inlet and outlet openings, and between these openings traverses a fourth helical run of at least one convolution trailing the third helical run along the inner face of the tube. The fourth band is advanced at a faster rate than the third band whereby to effect the compression of the tobacco between these runs and these runs are preferably of opposite pitch.
Referring now to the drawings, and more particularly to FIGURES l to 8 thereof, which illustrate a preferred embodiment of the present invention, reference numeral 10 generally designates an elongated guide tube which is preferably formed of a self-lubricating abrasion-resistant material of any well known type, and of a diameter in accordance with the desired diameter of the end product to be formed. Three pairs of longitudinally spaced band inlet and outlet openings in the shape of longitudinal slots are formed in the wall of tube 10, the respective slots being tangent to the inner face of tube 10. The first pair of openings comprises an outlet slot 1B next adjacent the discharge end D of the tube 10 and communicating from above, with the interior thereof at the front of the tube designated at the 180 position and an inlet slot 1A trailing slot 113, and communicating from below with the interior thereof at the 180 position. The second pair of openings trails the first pair, and comprises a leading outlet slot 213 communicating from below with the rear or position of the tube interior and a trailing inlet slot 2A communicating from below with the tube 180 interior position. The third pair of openings trails the second pair and comprises a leading outlet slot 3B communicating from below with the tube 0 interior position and a trailing inlet slot 3A communicating from the rear with the bottom or 270 position of the tube interior. The inlet slots 1A and 2A are in end-to-end communication as are the slots 2B and 3B. The relative spacings of the slots are a function of the paths of the endless feed bands as well be hereinafter set forth.
Guide tube is suitably mounted in end-to-end relationship with a tobacco tube 11, and is coupled therewith by means of a sleeve 12, tube 11 communcating with a tobacco-containing hopper 13. A feed screw 14 extends along the length of tube llll, into the entrance end E of tube 10, and along the bottom of hopper 13, screw 14 being adjustably driven by a motor 16 through a variable speed coupling unit 17, the drive shaft of which is connected to screw 14.
The wrapper web applying system of the invention includes a pair of first and second endless bands 19 and 20 respectively, and the tobacco rod forming and feeding system includes a third endless band 21. Endless bands 19, 20 and 21 are formed of an easy flexible, resilient material such as a thin steel tape capable of withstanding longitudinal compression and of being easily flexed.
The first endless band 19 travels upwardly through inlet slot 1A into sliding engagement with the inside face of tube 10, traverses a forwardly counter-clockwise first helical run 19a along the inner face of tube 10 and then passes out of tube 10 upwardly through outlet slot 13. Thereafter, band 19 travels around wheels or drums 22, 23, 24 and 26 back to inlet slot 1A. A motor 27 is connected, by way of an adjustable speed coupling unit 28, at least to drums 22 and 26 which are of the same diameter, to drive these drums at the same peripheral speeds so that band 19 smoothly traverses its helical run 19a along the inner face of tube 10. The pitch of the helical run 1% of band 19, the inside diameter of tube 10 and the width of the band 19 are such that the opposite longitudinal edges of the band, at adjacent convolutions along the helical run 19a, are in substantially side-by-side abutment (FIGS. 2 and 3) to delineate a longitudinal tubular passageway. While the helical run 1% is illustrated as a single convolution, it is to be understood that it may include more than one convolution.
The second band 20 is similar to the first band 19, and travels upwardly through entrance slot 2A into the tube 10, traverses a forwardly counter-clockwise helical path 20a of about one half a convolution or about along the inner face of the tube 10 and leaves tube 10 downwardly through outlet slot 2B. Thereafter, band 20 travels about the wheels or drums 29, 30 and 32 back to inlet slot 2A. Drums 30 and 32 are also driven by motor 27 and coupling unit 23 and at the same peripheral speed as drums 26 and 22 so that bands 19 and 2% advance at the same speed. Band 2d, as it leaves drum 32, travels in side-by-side substantially abutting relationship with band 19 toward and through the inlet opening 2A and along the helical run 20a.
The third band 21 is similar in properties to bands 19 and 2t and is preferably provided with a roughened inner face as by sandblasting or the like treatment. Band 21 enters tube 10 horizontally through the inlet slot 3A, traverses a forwardly counter-clockwise helical run 21a of one and three-quarters convolutions or about 630 along and in sliding engagement with the inner face of tube 10 and leaves the tube substantially vertically downwardly through outlet slot 38. Thereafter, band 21 travels around the drums or wheels 33, 34, 36, 37 and 33 and back to inlet slot 3A. A motor 39, by way of an adjustable speed coupling unit 40, drives at least drums 33 and 33 at the same peripheral speeds to advance band 21 along its length at a speed at least equal to and advantageously greater than that of the bands 19 and 20. The leading edge of band 21, along the leading convolution of helical run 21a, preferably substantially abuts or slightly overlaps the trailing edge of band 20 along its helical run 20a (FIG. 2). It should be noted that the number of convolutions along helical run 21a may be different than that illustrated but should be at least one convolution. Furthermore, adjacent edges of band 21 along successive convolutions are preferably in substantial abutment.
A roll 41 of a band or web W of a suitable wrapper material, advantageously an artificial sheet tobacco of any desirable composition including finely divided tobacco and a suitable binder, is rotatably mounted at a point trailing bands 19 and 20 where they enter guide tube 10. The web W is of slightly greater width than band 19 and is directed by a guide 42 into coinciding overlying relationship with band 19 and into overlapping relationship with adjacent band 20, and is carried by and with bands 19 and 20 int and along guide tube 10.
Between tube 10 and guide 42 and adjacent drum 26 there is located means for applying an adhesive, for example, an aqueous solution of a gum, to the inner border of web W remote from the belt 20. The adhesive applying means includes an open topped tank 43 containing the gum solution 44. A rotating transfer wheel 46 has its lower periphery immersed in the gum solution 44 and carries adhesive to a rotating applicator wheel 47 which engages the periphery of the wheel 46. The wheel 47 in turn, engages the outer border as 48 of the web W as it is carried by the band 19 over the drum 26 to apply a continuous strip of adhesive thereto.
Considering now the operation of the apparatus described above, tobacco T is fed from hopper 13 by rotating screw 14 through tube 11 into tube 10 and into the passageway delineated by the third band 21 along helical run 21a. Band 21, traversing a circular forwardly advancing path along the run 21a, engages the tobacco delivered to it by the screw 14 and effects the turning and interlocking of the tobacco into a compact, coherent, integrated continuous rod or cylinder of tobacco C advancing and rotating in synchronism with band 21 along run 21a.
Upon leaving band run 21a, tobacco rod C advances along the passageway delineated by bands 19 and 20 along runs 20a and 19a. Web W is withdrawn from roll 41, led by guide 42 into overlying and overlapping relationship with bands 19 and 20 and wheel 47 applies a strip of adhesive to the outer border 48 thereof. Web W is carried by band 19 helically about the advancing tobacco rod C and is helically wound about the tobacco rod. The outer or leading border 48 of web W which carries the adhesive is brought into overlapping relationship with the trailing border of web W along its next leading convolution around the advancing tobacco rod, the trailing border being delineated by that portion of web W overlapping the band 2t). The overlapping borders of the successive convolutions of the web W are afiixed to each other by the sandwich adhesive strip 48 to form a continuously advancing wrapper tube which tightly ensheaths the concurrently advancing rod of tobacco. As the wrapped rod 49 of tobacco emerges from end D of tube it is cut into cigars S of predetermined lengths by a periodically actuated cutter 50 located along the path of the web wrapped advancing rod 49.
It will be seen that the tobacco and the rod formed therefrom transverses a substantially closed passageway delineated by the bands 19, and 21 along the runs 19a, 26a and 21a and moves concurrently with these bands and is hence not subjected to any rough or abrasive handling. The compactness and density of the tobacco filler or rod and the tightness of the wrapper web may be easily and widely controlled by adjusting the relative speeds of screw 14 and the bands 1%, 20 and 21. A greater compactness and density is generally achieved by higher speeds of the trailing feed elements. Thus an increase in speed of the screw 14 relative to the band 21 or of the band 21 relative to the bands 19 and 20 is accompanied by an increase in the tobacco filler density.
In FIGURES 10 to 13 of the drawings there is illustrated a modified form of tobacco rod producing mechanism which may be used to great advantage, and which differs from that first described primarily in the provision of a fourth endless forming and feed band traversing a helical run trailing that of the third endless band of the previously described modification. Specifically, the mechanism includes a guide tube 51 which is coupled to the hopper outlet tube 52 housing a rotating screw 53 for delivering tobacco from the associated hopper into tube 51. The leading section of the tube 51 has associated therewith the first and second endless wrapper applying bands (as 19, 20, not here shown) which traverse helical runs in the tube 51, as earlier described, as well as a third endless flexible band 54 traversing a helical run in the tube 51 trailing the first and second bands in the manner of the endless band 21. Band 54 enters the lower part of tube 51 through the rear, traverses a helical forwardly counter-clockwise run 54a of 630 along the inner face of the tube 51 and leaves the tube downwardly at the 0 position and travels back to tube 51 by way of suitably driven drums.
Tube 51, in addition to the inlet and outlet openings for the first three endless belts, is provided with a trailing pair of longitudinally spaced inlet and outlet slots including a leading outlet slot 413 directed tangentially downwardly from the front or 180 inside position of tube 51 and a trailing inlet slot 4A extending horizontally rearwardly through the tube lower front wall tangentially to the bottom or 270 inside position of tube 51. It should be noted that in the illustrated embodiment, outlet slot 4B is slightly forward of the inlet slot for the third endless band.
A fourth endless flexible resilient band 56 enters the tube 51 through the entrance slot 4A transverse a forwardly clockwise helical run 56a along the inner face of the tube 51, at a pitch opposite to that of third band 54, and for about two and three-quarters convolutions. The helical runs 54a and 56a have their adjacent borders in overlapping relationship, band 56 at the leading end of run 56:: overlapping the trailing convolution of band 54 shortly forward of inlet slot 3A and band 54 at the trailing end of run 54a overlapping part of the leading convolution of band 56. Thus, bands 54 and 56 along runs 54a and 56a delineate a substantially closed face tubular passageway.
Band 56, after leaving outlet slot 413, travels about successive wheels or drums 57, 58, 59, 60 and 61 and back to inlet slot 4A. A motor 63, by way of a variable speed coupling unit 64, drives at least drums 61 and 57 at the same peripheral speed to advance the belt 56 continuously along its length and along helical run 5601. Bands 54 and 56 advance along runs 54a and 56a forwardly in the same axial direction toward the discharge end of the tube 51 but in opposite peripheral directions, band 54 travelling counter-clockwise and band 56 clockwise. The band 56 is driven at least at the speed of and advantageously at a greater speed than band 54.
In the operation of the apparatus last described, tobacco is fed by screw 53 into the tube 51 and the passageway delineated by run 56a. Belt 56 along run 5611 engages the tobacco and turns and advances it toward the preferably slower moving run 54a of belt 54. Belt 54 then engages the tobacco and turns it in an opposite direction and advances it toward the wrapping section earlier described. As the tobacco transfers from run 56a to the slower moving run 54a it is compacted into an integrated coherent continuous rod of tobacco whose density may be varied by adjusting the relative speeds of the various endless bands and of screw 53. Generally, the greater the reduction in feed speeds approaching the discharge end of the tube 51 the greater the tobacco filler density and compactness.
The embodiment of the present invention illustrated in FIGURES 14 to 16 of the drawings differs from those earlier described in the arrangement for feeding the tobacco to the forming and wrapping mechanism. There is provided an elongated guide tube 65 communicating at its trailing end with a trough 66 forming an obtuse angle with the axis of the tube 65 corresponding to the pitch of the feed band therein as will be hereinafter set forth. The trough 66 includes a flat base 67 and upstanding longitudinally extending side walls 63. Opposite inwardly directed lips 69 are formed on the inner leading face of the side walls 68 a short distance above base 67 to delineate therewith band guide channels, the confront ing longitudinally extending side wall 68. Opposite inproach tube 65. An endless flexible resilient band 76 corresponding to the third or fourth feed bands of the earlier described embodiments travels along the upper face of the trough base 67 between the side Walls 68 and below the lips 69 and into the tube 65 through an enlarged opening 70a therein. Band '76 then traverses a helical run along the inner face of the tube 65 and then leaves the tube 65 through an outlet opening 76b and returns to trough 66, being advanced along its length in the manner earlier described.
A pair of opposite parallel bracket plates 71 project upwardly from side Walls 68 posterior to lips 69 and have journalled thereto a shaft 72 to which is affixed an outer flanged fiat faced drum 73 medially disposed relative to and located above trough 66. Shaft 72 is coupled to a variable speed motor '74 suitably supported on a laterally projecting mount plate 76. A second pair of parallel bracket plates '77 project upwardly from the trough side walls 68 and have journalled therein a transverse shaft 78 carrying a drum 7 9 having a concave peripheral face. Drum 79 is located directly behind the trailing opening into the tube 65 along the bottom of which the band 7% enters and is disposed a short distance above the band 70. A11 endless flexible feed band 80 of any suitable flexible material is supported by and between the drums 73 and 79 and is advanced by the driven drum 73 along a forward bottom run 81 which extends from the bottom of drum 73 in a downwardly forwardly inclined direction to the bottom of drum 79, starting transversely flat as it leaves the drum 73 and becoming increasingly downwardly convex approaching drum 79.
In the operation of the apparatus last described, tobacco T is continuously deposited in any suitable manner and in the desired orientation upon band 79 in trough 66 behind the band 3%. The tobacco T is carried by band 7t? toward the entrance to tube 65 and during such passage is laterally compressed by the confronting converging faces of lips 69 and vertically compressed and shaped by the forwardly converging bands 70 and 8d. The compacted tobacco enters tube 65 with band 70 wherein the latter traverses a helical run, as previously described, to shape the tobacco into an advancing, integrated, coherent rod which is thereafter helically wrapped while continuously advancing. The density and compactness of the final product is not only a function of the relative speeds of the various feed bands but also the rate of tobacco feed advancing. The density and compactness of the final product is not only a function of the relative speeds of the various feed bands but also the rate of tobacco feed to trough 68. Trough 68 is advantageously continuously supplied at a predetermined level of tobacco approaching the feed band 80 to assure a uniform end product.
While there have been described and illustrated preferred embodiments of the present invention, it is apparent that numerous alterations, omissions and additions may be made without departing from the spirit thereof.
Having described the invention, what I claim and desire to secure by Letters Patent is:
l. A feed device comprising a longitudinally extending tubular guide, an endless flexible band including a helical run disposed within and, extending coaxially along said tubular guide for more than one convolution and bearing on the inner face of said tubular guide, one longitudinal edge of said band extending along said helical run being in substantial abutment along a length thereof with the other longitudinal edge of said band along the next successive convolution of said band along said helical run, and means for advancing said band along the length of said tubular guide.
2. A continuous cigar producing apparatus comprising a longitudinally extending tubular guide having longitudinally spaced first trailing and second leading openings formed in the wall thereof, a first endless, flexible, resilient band entering said tubular guide through said first opening and traversing a first coaxial helical run delineating a first tubular passageway along said tubular guide and leaving said tubular guide through said second opening, means for advancing said first band along the length thereof to traverse said helical run from said first opening to said second opening, means for continuously feeding a wrapper web in overlying relationship with the inner face of said first band at said first opening, means for continuously feeding a cylindrical rod of tobacco into said tubular passageway, said tubular guide having formed in the wall thereof longitudinally spaced third trailing and fourth leading openings, said first and third openings being in side-by-side relationship, a second endless flexible resilient band entering said tubular guide through said third opening in side-by-side parallel relationship with said first band as it enters said first opening and traversing a second coaxial helical path of less than one convolution and leaving said tubular guide through said fourth opening, and means for advancing said second band along the length thereof in the same direction as said first band, said wrapper web feeding means directing said web into overlapping relationship with the inner face of said second band,
3. The cigar producing apparatus of claim 2 wherein said first and second bands are of substantially the same width and traverse said respective helical runs in the same sense at substantially the same linear speed.
4. A continuous cigar producing apparatus comprising a longitudinally extending tubular guide having longitudinally spaced first trailing and second leading openings formed in the wall thereof, a first endless, flexible resilient band entering said tubular guide through said first opening and traversing a first coaxial helical run delineating a first tubular passageway along said tubular guide and leaving said tubular guide through said second opening, means for advancing said first band along the length thereof to traverse said helical run from said first opening to said second opening, means for continuously feeding a wrapper web in overlying relationship with the inner face of said first band at said first opening, a third flexible resilient endless band having a third helical run located in said tubular guide and trailing said first helical run and delineating a second tubular passageway in coaxial alignment with said first tubular passageway, and means for advancing said third band along the length thereof and along said third helical run in the same axial direction as the direction of advance of said first band along said first helical run.
5. The cigar producing apparatus of claim 4- wherein said first and third helical runs are of the same sense and substantially the same pitch.
6. The cigar producing apparatus of claim 4 wherein said tubular guide has longitudinally spaced trailing fifth and leading sixth openings formed therein trailing said first and second openings, said third endless band entering said fifth opening and traversing said third helical run aiong said tubular guide and leaving said guide through said sixth opening.
7. The cigar producing apparatus of claim 4 including a fourth flexible, resilient endless band, having a fourth helical run located in said tubular guide and trailing said third helical run and delineating a tubular passageway in coaxial alignment with said first and second tubular passageways, and means for advancing said fourth endless band along the length thereof and along said fourth helical run in the same axial direction as the direction of advance of said third band along said third helical run.
8. The cigar producing apparatus of claim 4 including a fourth flexible, resilient endless band, having a fourth helical run of an opposite sense to said third helical run located in said tubular guide and trailing and in substantially end-to-end relationship with said third helical run and delineating a tubular passageway in coaxial alignment with said first and second tubular passageways, and means for advancing said fourth endless band along the length thereof and along said fourth helical run in the same axial direction as the direction of said third band along said third helical run.
9. The cigar producing apparatus of claim 4 including a second endless flexible resilient band traversing a second helical run of less than one convolution and disposed in said tubular guide between said first and third helical runs and extending along said second helical run in sideby-side relationship with said first band, and means for advancing said second band along the length thereof in the same direction as said first band, said wrapper web feeding means directing said web into overlapping relationship with the inner face of said second band.
10. A tobacco forming device comprising a longitudinally extending tubular guide, a first endless flexible resilient band traversing a first helical run along the inner face of said tubular guide, a second endless flexible resilient band traversing a second helical run along the inner face of said tubular guide and trailing said first helical run, means for advancing said first band along the length thereof and means for advancing said second hand along the length thereof at a greater axial speed than said first band and in the same axial direction along said second helical run as said first band along said first helical run.
11. The tobacco forming device of claim 10 wherein said first and second helical runs are of opposite pitch.
12. A device for continuously forming an elongated cylindrical rod of tobacco comprising a longitudinally extending hollow tubular guide, a plurality of pairs of openings formed in the wall thereof, each pair providing an entrance opening into and an exit opening out from said guide, the openings of each pair being longitudinally spaced along the guide, a plurality of endless flexible resilient bands entering the guide through the entrance openings and leaving the guide through the exit openings and each traversing a helical run between said openings, at least one helical run defining a tubular passageway,
the guide supporting the passageway and limiting the 10 transverse dimensions thereof.
References Cited by the Examiner UNITED STATES PATENTS 545,805 9/95 Maxfield 131-59 1,714,541 5/29 Bergstein 9380 1,919,705 7/33 Petersen 198136 XR FOREIGN PATENTS 176,916 11/ 3 5 Switzerland.
SAMUEL KOREN, Primary Examiner.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US545805 *||Sep 3, 1895||Cigarette-machine|
|US1714541 *||May 31, 1927||May 28, 1929||Samuel Bergstein||Means and method for making paper tubes or the like|
|US1919705 *||Aug 18, 1932||Jul 25, 1933||Petersen Martin J||Weed or quack grass plow|
|CH176916A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3460445 *||Feb 4, 1966||Aug 12, 1969||Karl Ried||Tubemaking apparatus|
|US3515148 *||Jun 4, 1968||Jun 2, 1970||Wallace Bert H||Cigar wrapping machine|
|US4601387 *||Sep 12, 1984||Jul 22, 1986||M.A.N. Roland Druckmaschinen Aktiengesellschaft||Transport path for paper products with speed reduction, particularly for printing machinery in combination with folding apparatus|
|US6553742 *||Jun 18, 2001||Apr 29, 2003||G.D Societa' Per Azioni||Method and machine for wrapping cigars|
|U.S. Classification||131/59, 53/584, 493/299|