US2179644A - Tobacco handling and preparing - Google Patents

Tobacco handling and preparing Download PDF

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US2179644A
US2179644A US754496A US75449634A US2179644A US 2179644 A US2179644 A US 2179644A US 754496 A US754496 A US 754496A US 75449634 A US75449634 A US 75449634A US 2179644 A US2179644 A US 2179644A
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leaves
tobacco
stemming
leaf
shredder
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US754496A
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Rupert E Rundell
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AMF Inc
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AMF Inc
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Priority to BE409757D priority Critical patent/BE409757A/xx
Priority to NL45038D priority patent/NL45038C/xx
Priority to NL45036D priority patent/NL45036C/xx
Priority to NL42716D priority patent/NL42716C/xx
Application filed by AMF Inc filed Critical AMF Inc
Priority to US754496A priority patent/US2179644A/en
Priority to DEA75916D priority patent/DE666890C/de
Priority to US271959A priority patent/US2262862A/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B5/00—Stripping tobacco; Treatment of stems or ribs

Definitions

  • This invention relates to tobacco handling and preparing, particularly to various steps in the preparation of shredded tobacco ready for manufacture into cigarettes, from whole 'tobacco leaves,
  • the tobacco leaves have usually been stemmed without spreading or uncurling the laminae of the leaves and the bunched and crumpled leaves, having their lengths extending in various directions have subsequently been fed into a. cutter of the. guillotine type, in which the tobacco is compressed to a more or less solid column or cake from which a thin slice is cut to make the desired shreds.
  • a. cutter of the. guillotine type in which the tobacco is compressed to a more or less solid column or cake from which a thin slice is cut to make the desired shreds.
  • the leaves before being compressed are crumpled up and sometimes doubled on themselves and sometimes tangled or ropy and because their lengths lie at random rather than parallel to the cutter blade, the shreds are relatively short, frequently sharply kinked and are more easily broken. In the finished cigarette this sometimes results in short shreds which may spill out of the end of the cigarette and cause loose ends as well as crumbs in the mouth of the smoker.
  • the tobacco may lose volume and resiliency so that the shreds do not occupy the volume they would otherwise occupy and more tobacco by weight is required to get a cigarette of the same feel or density, than is required of uncompressed tobacco. Also the compressing of the damp leaves often renders them darker in color.
  • the invention however is applicable to the guillotine type of cutter for the purpose of improving the cutting thereby through improved feeding of the leaves thereto, since it has been found that .proper spreading and positioning of the leaves also results in better shreds with the guillotine type of cutter.
  • a principal purpose of the invention is to deliver the leaves to the cutter relatively flat and outspread or open as compared with the crumpled and uniform condition in which domestic tobaccos are ordinarily fed to cutters.
  • One of the principal difliculties in using a cutter of this type lies in feeding the leaves to the cutter at a reasonably uniform rate without bunches which choke the gang disk cutter and without substantial intervals during which few or no leaves are cut, decreasing the efiiciency and output of the cutter, and in feeding the leaves into this cutter in a condition and position which will retain and add to the advantages of this type of cutter.
  • one of the features of the invention is theopening'and/or cleaning of the leaves prior to cutting.
  • Another related feature is the delivery of the leaves to the cutter in a flat outspread and in certain circumstances, booked or 'shingledcondition to provide optimum feeding conditions for this type of cutter.
  • This type of feeding is particularly valuable for the intermeshing disk type cutter because of the need for a thin relatively uniform stream of tobacco, a condition diflicult to attain with the bunched and tangled domestic leaves delivered from the conventional stemmer. So far as'I am aware, the present arrangementafiords the first practical one for feeding large leaf American type stemmed tobaccos to this type of cutter.
  • An important feature of the invention lies in the cleaning from the leaves of sand, dust'and grit prior to cutting. This avoids one of the main causes of wear on the cutters.
  • Another important object of the invention relates to the manufacture of blended cigarette tobacco, this object being to blend tobacco leaves automatically and more systematically and uniformly than heretofore to produce a continuous supply of uniformly blended tobacco shreds in the proper condition for use in cigarette machines from unstemmed leaves of the different kinds of tobacco to be blended.
  • One of the most important objects of the invention is to so prepare "cigarette tobacco that by reason of the greater flufliness and volume of the shreds per unit of weight, more and better cigarettes 'canbe made from a pound of tobacco than hitherto. Since cigarettes are judged by their firmness or plumpness of filling or "feel" rather than their weight, by so treating the tobacco as to produce the same or greater plumpness or firmness with less tobacco, it/is possible to save an appreciable percentage by weight of tobacco over that previously used. The importance of a saving of.
  • Another important object of the invention is to prepare tobacco efficiently by utilizing one manual feeding operation of a plurality of the tobacco preparing operations as for instance two or more of the following preparing operations spreading and cleaning, stemming, blending and shredding-as well as the additional conditioning, casing, or flavoring and cooling operations.
  • the importance of this will be realized when it is pointed out that the initial feeding of the individual leaves is the main labor consuming operation in connection with tobacco treatment in accordance with the invention.
  • the stemming machines herein used are of an improved design, disclosed in U. S. Patents Nos. 1,864,765, June 28, 1932, and 1,916,018, June 27, 1933, both to R. E. Rundell and G. E. Hagquist, and a co-pending application #677,336, filed June22, 1933, by R. E. Rundell and G. E. Hagquist, now Patent 1,981,470, granted Nov. 20, 1934; reference to which is made 'for'further details, the leaf handling mechanisms of which are such that the stemmed leaves on their individual delivery belts are freed of dust, etc., opened flat and are traveling endwise.
  • Certain features illustrated herein, relating to the combination of stemming and blending mechanism, not claimed specifically in this patent have been made the subject-matter of a divisional application, Serial N0. 271,959, filed on May 5, 1939.
  • One of the main features of the invention is based on the discovery that the leaves as delivered from this type of stemmer are ideally conditioned and arranged for shredding.
  • Fig. 1 is an enlarged 'side elevation, partly in section, taken on line l-l of- Fig. 2 showing a system for carrying out the invention
  • Fig. 2 is a plan view of an assembly of certain parts of the system shown in Fig. l;
  • Fig. 3 is an enlarged detail side elevation partly in 'section on line 3-4 of Fig. 2, showing a transfer device;
  • Fig. 4 is an endelevation on line H of Fig. 3;
  • Fig. 5 is a plan view on line 5-5 of 3;
  • Fig. 6 is an enlarged detail end elevation on line 5-6 of Fig. 2, showing the delivery of the stemmed v uniform shreds.
  • Fig. 7 is a plan view showing the arrangement of the system when a single stemming unit is employed
  • Fig. 8 is a plan view showing a modified arrangement of a number of stemming units for crosswise delivery of the stemmed leaves onto the collector belt;
  • Fig. 9 is a side elevation of a modification of the improved system employing a guillotine cutter and casing apparatus
  • Fig. 10 is an enlarged .detail view partly in section of the gripping and cleaning means shown in Fig. 1;
  • Figs. 11 and 12 are details in sectional side and front elevation respectively, of the stemming unit employed in connection with the improved system.
  • a tobacco leaf shredder together with means for feeding outspread leaves thereto in predetermined position relative to their direction of movement into the cutter and preferably this cutter consists of rotating gangs of intermeshing disks and the outspread leaves are delivered thereto edgewise and endwise and without compression to produce long
  • a stemmer is provided, together with mechanism for advancing the stemmed leaves to said shredder.
  • a leaf conditioner for varying the moisture content of the leaves acts on the stemmed leaves before shredding.
  • means are provided for cleaning, and/or spreading the leaves and for retaining the outspread. condition of the leaves until shredded.
  • a unitary tobacco treating system In one preferred means to form a unitary tobacco treating system.
  • a number of stemming units Ui, U2, etc. are arranged in a group and the unstemmed leaves L of each kind of grade of tobacco to be' used in a given blend are fed to one or more of these units according to their proportion in the blend.
  • eight stemming machines would form one group, five of which would handle the first kind of tobacco, two the second kind and one the third kind, or certain of the' machines might be operated at a different speed side by side with the butts on the right (Fig. 1
  • the leaves are carried by chains 2 having spaced grippers 3 advancing the leaves by their butt ends between them through suction chambers 4 wherein a stream of air is directed from the stem outwardly toward the edges of the leaves to spread, straighten out and clean the same.
  • the suction chambers of all machines of the group are connected to suction pipes 5 and 6.
  • the outspread, cleaned and relatively flat leaves are forwarded on the bottom loops of suction belts I and are then dropped upon belts 8 running in the opposite direction to deliver the leaves tip first to .the stemming unit.
  • a valve 9 in suction pipe 10 periodically shutting off the suction in chambers H of belts I at the proper moment, effects the transfer.
  • the belts 8 together with companion belts l2 guide the leaves into the stemming mechanism l3 which removes the stems and permits the stemmed leaves L to be carried away, tip first, by an endless "delivery belt l4 running in the forward direction on whicn the leaves are delivered in outspread condition.
  • the chains 2, and belts I, 8, l2 and M of each stemming unit are synchronously driven in an suitable manner as by a motor I5.
  • the leaves are delivered by the belt l4 of each unit onto a row of spaced rollers l6 driven in the direction of the delivery belt by sprockets I! connected by a chain ill with a sprocket IS on drive shaft of belt [4, see Figs. 3 to 5. Between these rollers two rows of parallel fingers or prongs 21 mounted diametrically on a horizontal shaft 22 are intermittently revolved one-half turn by a sprocket 23.
  • is set at such an angle that the leaves picked up by a row of fingers from the rollers 16, upon one-half revolution of shaft 22, in which the ends of the fingers describe the paths 24 shown in Fig. 4, point in the direction of the collector belt 25.
  • dwell in their turned position, the leaf drops upon the collector belt 25, .which is at a distance below the rollers l6 sumcient to clear the return paths 24 of the fingers, and thus the leaves are forwarded endwise in a single stream to the shredder unit, presently to be described.
  • the speed of collector belt 25 may be adjusted so that the leaves deposited upon it by the fingers 2! form a single layer with spaces between the leaves, or a continuous overlapping layer, or separate books of stacked leaves, as desired.
  • the leaves willbe blended in the desired proportion after the belt has passed all stemming units; in an exact and systematic fashion instead of being pitch-forked together in a more or less haphazard fashion, as has been the common practice.
  • the blending arrangement maybe dispensed with in some cigarette factories or be unnecessary when unblended tobacco is used, in which case the'arrangement just described is employed with the same kind of leaves to feed from more than one stemming unit into a single stream for delivery to the cutter, or that illustrated in Fig. 7 may be employed.
  • the leaves are carried endwise by belt 25 through a chamber 26 in which they are conditioned by steam or by dry or moist air, according Ordinarily dry air is used because somewhat less moisture is generally re quired for disk cutting than for stemming.
  • the leaves are delivered outspread and fiat as received from the stemmer endwise and edgewise, to the shredder. While the leaves might be delivered otherwise, as directly from belt 25 into the cutters, to insure greater control of the leaves as they pass into the cutters,
  • the drum 2B guides the oncoming leaves into the shredding mechanism which consists of two gangs of inter-engaging or inter-meshing circular shearing disks 32 rotating in opposite directions on parallel shafts 32by means of intermeshing (gears 33 driven by a sprocket 34. While the leading portions of the leaves are being shredded, the leaves are held somewhat taut and straight by a roller 35 bearing against drum 28 and holding back the trailing portion of the leaves.
  • the shredding unit is not shown in detail since details thereof do not form a part of the present invention but is of the general type disclosed in the patent to Korbuly #1,485,418, March 4, 1924. Th? s type of shredder has a number of advantages some of which have also been referred to in connection with the statement of objects of this invention, in that the leaves are not compressed so as to lose their resiliency as well as their color and if'the leaves are properly fed thereto, can
  • shreds are ordinarily much shorter and, due to the kinks therein, often broken. Also the tangled and crumpled leaves tend to go through the disks in bunches which choke the disks and reduce the output of the cutter.
  • the leaves delivered by the belt 25 and roll 28 into the disks 32 of the shredding unit are cleaned by the suction boxes 4 so that the disks are not subject to wear from grit and sand on the leaves, and the leaves are in fiat outspread condition and are delivered edgewise and preferably, though not necessarily, endwise relative to the plane of nip of the disks. Since the leaves are delivered endwise and there are few folds or doubled-over portions to the leaves, the majority of the shreds are as long as the portion of the leaf from which they are cut, that is they average in length about the same as the average length of the leaves.
  • 1,682,464 to Arelt are used which engage the ends of the cigarettes and'firmness of the ends in resisting these detectors results in fewer cigarette packages being rejected because of cigarettes having loose ends, all desirable results enhanced by the presentmethod and apparatus for preparing and handling tobacco.
  • the leaves may be aided in their progress through the cutter disks by suction from below the disks, drawing a current of air from above through the casing 36 and into one of the peripheral compartments of a suction drum 31 rotated by a sprocket 38 around stationary suction chamber 39 connected to a suction pipe 40.
  • This suction may be dispensed with in some forms of the invention and the shreds dropped by gravity.
  • the chamber 39 has an opening 4
  • the bottom of radial wall 31a of the compartments is of perforated or sieve construction to pass air but not tobacco.
  • the contents of each compartment drops into a chute 42 which empties into a drying tower 43 on the floor below.
  • the partition walls of drum 31 constitute locks against the heated air rising from the drying tower into chute 42, and said drum serves to separate the tobacco from the air current through the disk blades, and also to remove dust.
  • a cylindrical casing 3 5a communicating with chute l2 surrounds the drum 3'! to prevent loss of tobacco from the filled compartments of the drum 31.
  • the tobacco shreds T are carried over a series of superimposed horizontal perforated belts ll, exposed to the drying action of heated air admitted by the inlet 45 and leaving by outlet 43.
  • Alternate belts have their ends projecting beyond and travel in opposite directions from the remaining belts so'that one delivers to the next one.
  • the lowermost ofjthe belts 44 discharges the dried shreds into. the pockets of a conveyor 41 which carries them to a cooling tower 43 in which on similarly arranged belts 4! they are exposed One percent saving in the to conditioned air entering at the inlet 50.
  • the lowermost of the belts. deposits the shreds, which now contain the proper amount of moisture for use in cigarette making, upon an endless bent 5l which carries them to trucks or a conveyor system for transporting the tobacco to the cigarette machines.
  • a continuously operating unitary tobacco handling and preparing method and system for supplying shredded cigarette tobacco from whole tobacco leaves is provided. It is particularly noted that the one feeding operation of laying out the leaves from hands of tobacco, approximately parallel with their butts toward the stemming unit is the only manual operation on the leaves required for cleaning, spreading out, stemming, blending, conditioning for cutting, feeding to the shredder, drying and cooling. Also, that only one main conditioning or moistening operation prior tofeeding to the stemming unit is required, the conditioning. operation at 26 being merely a supplementary one for varying more or less slightly the moisture content to that found best for cutting, as hereinafter pointed out. Casing or flavoring units may also be included in this unitary system.
  • a modified arrangement (Fig. 7), utilizing single stemming units may be employed to produce the desired leaf arrangement and condition on the feed belt of the shredding machine.
  • the leaves in this case are transferred to the collecting belt 52, Fig. 7, by means of an auxiliary suction belt 53, arranged as shown in the patent application above identified, which transfers the leaf from the under side of: a suction belt 53 to belt 52, under said suction belt in the same manner as transfer is made from belt I to belt 8.
  • the belt 52 then carries the blended leaves flat and outspread in an endwise direction through the conditioning chamber 26 and delivers them to the shredding knives 32, in the same inanner as belt 25 above.
  • the belt 25 may then carry the leaves into a guillotine type cutter -as shown' in Fig. 9, wherein the crosswise arrangement of the leaves arranges the same parallel to the cut of the transversely extending conventional guillotine knife 55 which cuts transversely across the stream of compacted tobacco fed thereto, to make long, more uniform shreds than the usual guillotine cutter to which crumpled leaves are fed more or less at random.
  • the leaves L emerging from the conditioning chamber 26, either lengthwise from the arrangement of Fig. 2 or crosswise as in Fig. 8, but preferably crosswise, are carried by the end roller 21 of collector belt 25' into a reciprocating tobacco cutter 54 of the guillotine type in which the vertical knife 55 having its edge transverse to the stream of leaves L actuated by a pitman 56 driven by an eccentric on drive pulley 51, shred them horizontally.
  • the shreds T dropping from a chute 58 are carried bya conveyor 59 into a casing drum 66 in which they are sprayed by a pipe 6
  • the drum B6 rests on rollers 63 and is rotated by gears 64 and 65 driven by bevel gears 66 and 61.
  • the flavored shreds T are discharged into chute 42 through which theydrop into the drying tower 43, whence they are carried by the conveyor 41 to the conditioning tower 48 and are finally delivered to the conveyor belt 5
  • the disks rotate with much higher'surface speed at the cutting parts than the conveyor 25 and rolls 28 and 35, all less than a leaf length from the nipping point where the disks come together and thus these parts 25, 28 and 35 act to retard the trailing part of the leaf while the leading part is passing into the disks and thereby straighten the leaf and hold it taut and fiat.
  • grippers 3 are periodically held open for a short timeby cam pieces II and 72,'Fig. 1, with which the rollers 10' engage near the ends of th lower loops of chains 2 to allow the stems S of the leaves L to pass into the jaws, and again at the upper ends of the chains to release the leaf butts.
  • the straightened and cleaned leaves L carrried by the belts 8 and M are stemmed by tearing the stem from the leaf blade from tip to butt and for this purpose are received by a perforated drum 13, Fig. 11, revolving on a stationarysuction chamber 14 connected to suction pipe 6 by a pipe 15.
  • the stem S off pressed into one of a's'eries of annular grooves e leaf L is' 16 into which the periphery of drum I3 is divided, whereupon a pin or gripper element 11, Fig. 12, projecting into that groove through a radial slot in drum l3 from a horizontal plunger 18, clamps it against a partition of groove 16.
  • the drum l3 carries plungers 18 about its circumference, the plungers having pins 11 in the groove 16 so that, as the drums I3 and 13 ad-- vance together, the stem S gripped by the respective pins 11 acting against the opposed wall of the grooves I6, the plungers 18 being forced axially by springs 19 when released by a stationary cam 80 which holds the grooves open until the stems have entered.
  • the drums I3 and 13 momentarily draw apart to permit a stripping roller 8
  • aids in cleanly separating the stem from the leaf as they are drawn forward in unison by the drums l3 and 13.
  • the stemmed leaf L still outspread, since this type of stemmer maintains the leaf spread, is carried away by belt I 4 while the stem S is ejected from the drum l3 by an oppositely revolving star wheel 82.
  • the leaves may be stemmed at the proper moistness, and then shredded when relatively dry, without the interposition of any manual ordering operation.
  • Tobacco treating apparatus comprising in combination, cooperating means for stemming while outspread, to said stemming means, mechanism to transfer the stemmed leaves from said stemming means to a shredding station, and means to receive and shred the cleaned an stemmed leaves while still outspread.
  • Tobacco treating apparatus comprising in a unitary machine structure cooperating means for stemming leaves and means for outspreading and cleaning the leaves with the web portions thereof extended on both sides of the stems before stemming, means for receiving and shredding the outspread and stemmed leaves, and coordinated mechanism for successively forwarding tobacco leaves from said outspreading means into the range of action of said stemming means,
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves and having automatic means for blending leaves of difierent characteristics, means receiving and shredding the blended and stemmed leaves, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of each of said means.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves and having means for reconditioning the stemmed leaves, means receiving and shredding the stemmed and reconditioned leaves, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of said means.
  • Apparatus combining in' a unitary system means for the continuous treatment of initially unstemmed tobacco leaves to convert the same int-o stemmed shreds suitable for tobacco filler
  • said apparatus comprising cooperating means for stemming leaves, means receiving and shredding the stemmed leaves, means for adding casing fluid to the shreds, means for reconditioning said cased shreds, and mechanisms coordinated with said several means for respectively forwarding tobacco leaves into the range of action of said stemming means, and from said stemmingmeans to said shredding means, from said shredding means to said casing means, and from said casing means 'to said reconditioning means.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, and means receiving and shredding the stemmed leaves, said stemming means having multiple stemming devices and a coacting collecting device arranged in receiving position with respect to said devices for blending leaves of different characteristics.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, and means receiving and shredding the stemmed leaves, said stemming means having multiple stemming devices arranged in echelon and a coacting obliquely arranged collecting belt arranged in receiving position relativelyto said devices for blending leaves of diflerent characteristics.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, means receiving and shredding the stemmed leaves, said stemming means having a leaf conditioning chamber throughlwhich the stemmed leaves pass on their way to said shredding means, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of each of said means.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, mechanism for spreading tobacco leaves and delivering them to said stemming means in outspread condition, with the laminae extended on both sides of the stem, means receiving and shredding the stemmed leaves, said stemming means being arranged to deliver and said shredding means being arranged to receive the stemmed leaves in outspread condition, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of each of said means,
  • l0fTobacco treating apparatus comprising in combination cooperating means for stemming leaves, means receiving and shredding the stemmed leaves, said shredding means having a suction drum controlling the delivery of leaves thereto, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of each of said means.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, and means receiving and shredding the stemmed leaves, said stemming means having a belt positioned to receive the leaves from said stemming means and deliver them to said shredding means, whereby the stemmed leaves are delivered to said shredding means.
  • Tobacco treating apparatus comprising in combination cooperating means for stemming leaves, means receiving and shredding the stemmed leaves, said shredding means having means for producing a down current of air therethrough, and cooperating mechanism for successively forwarding tobacco leaves into the range of action of each of said means.
  • said reconditioning means includes drying means for said fluid-cased shreds having a plurality of superposed horizontal perforated belts discharging shreds one to another, and cooperating mechanism for passing air successively upward through said perforated belts and the shreds in course of transfer downward thereon.
  • Tobacco treating apparatus having the features claimed in claim 3, in which said means for shredding leaves is combined with a pneumatic leaf spreader presenting leaves thereto in outspread condition.
  • Tobacco treating apparatus combining in a unitary system cooperating means for stemming leaves, means for blending said stemmed leaves, mechanism for transferring said stemmed leaves to said blending means, said blending means including a plurality of leaf forwarding devices for successively forwarding tobacco leaves; shredding means; and mechanism for receiving said blended stemmed leaves and transferring them to said shredding means, including a single conveyor extending past the delivery ends of said forwarding means to receive and combine a plurality of streams of tobacco leaves to mechanically blend the same and deliver a blended stream into position to be shredded.
  • Tobacco treating apparatus combining in a unitary system adapted to operate continuously means for stemming tobacco leaves, coordinated with means for blending leaves, means receiving and shredding the blended leaves, means for receiving and drying the blended shreds, and coordinating mechanisms for successively forwarding tobacco leaves into the range of action of each of said means.
  • Tobacco treating apparatus means and mechanisms combined in a unitary system and coordinated for continuous operacomprising tion, including means for blending leaves, means comprises stemming and spreading tobacco leaves,
  • stemming means means to subject said leaf to an air blast operating to clean each face of the leaf and to spread each web thereof symmetrically outward from the stem, traveling feeding mechanism for feeding leaves from said stemmer to said shredder, so that the web portions thereof on both sides of the leaf stems are fully extended away from said stems and are advanced fioatingly by said feeding means while being outspread, cleaned and stemmed.
  • a stemming and blending mechanism for cigarette tobacco leaves comprising a plurality of stemming units for stemming the different varieties of tobacco leaves to be blended, means coacting with said units to receive the stemmed leaves from each of said stemming machines and forward them in a single stream of blended leaves, and a tobacco shredder cooperating with said means to shred said stream.
  • a stemming and blending mechanism for cigarette tobacco leaves comprising a plurality of stemming machines for stemming a plurality disks arranged to shred said blended tobacco.
  • a unitary cigarette tobacco leaf preparing mechanism comprising in combination a tobacco leaf stemmer, a cutter for cutting tobacco leaves into shreds for cigarette making, and a drier for drying the stemmed and shredded tobacco,
  • a unitary cigarette tobacco leaf preparing mechanism comprising in combination a leaf cutter for cutting tobacco leaves into shreds for cigarette making, and a dryer for drying the shredded tobacco, rotary means for inserting the tobacco directly into the cutter elements, and means for discharging the shredded tobacco directly from the cutter into the dryer, said dryer comprising a chamber adapted to receive a drying medium and a series of conveyors arranged one under the other, alternate conveyors travel-' ing in the opposite direction from the remaining conveyors and delivering thereon to give the shredded tobacco a zigzag path through the chamber with a minimum tumbling of the tobacco.
  • veyor mechanism receiving the webs from said devices and advancing the same in parallel sideby-side disposition, and tobacco shredding means arranged in the path of advancing movement of said webs, including a knife movable transversely of the said path.

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US754496A 1934-11-23 1934-11-23 Tobacco handling and preparing Expired - Lifetime US2179644A (en)

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BE409757D BE409757A (nl) 1934-11-23
NL45038D NL45038C (nl) 1934-11-23
NL45036D NL45036C (nl) 1934-11-23
NL42716D NL42716C (nl) 1934-11-23
US754496A US2179644A (en) 1934-11-23 1934-11-23 Tobacco handling and preparing
DEA75916D DE666890C (de) 1934-11-23 1935-04-30 Vorrichtung fuer das Entrippen und Mischen von Tabakblaettern verschiedener Arten oder Masse
US271959A US2262862A (en) 1934-11-23 1939-05-05 Tobacco handling and preparing

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596183A (en) * 1944-12-02 1952-05-13 American Mach & Foundry Method for increasing the volume of shredded tobacco
US2777446A (en) * 1953-12-10 1957-01-15 Proctor & Schwartz Inc Apparatus and method for conditioning cut tobacco
US2799278A (en) * 1954-08-26 1957-07-16 Proctor & Schwartz Inc Method of treating tobacco
US2933090A (en) * 1956-03-15 1960-04-19 Proctor & Schwartz Inc Method for bulking tobacco
US3086533A (en) * 1961-02-09 1963-04-23 Rush D Touton Method for curing green tobacco
US3590826A (en) * 1966-05-04 1971-07-06 Hauni Werke Koerber & Co Kg Machine for blending tobacco or the like
US3612067A (en) * 1968-09-09 1971-10-12 Arenco Ab Apparatus for stretching and smoothing a natural tobacco leaf
US9604387B2 (en) 2010-04-22 2017-03-28 Forest Concepts, LLC Comminution process to produce wood particles of uniform size and shape with disrupted grain structure from veneer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948587C (de) * 1953-04-30 1956-09-06 Kurt Koerber & Co K G Anlage zum Stapeln und Belueften von Rauchtabak
DE1064409B (de) * 1955-09-26 1959-08-27 Quester Fa Wilh Vorrichtung zum Abtragen von Tabak, insbesondere Schnittabak

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596183A (en) * 1944-12-02 1952-05-13 American Mach & Foundry Method for increasing the volume of shredded tobacco
US2777446A (en) * 1953-12-10 1957-01-15 Proctor & Schwartz Inc Apparatus and method for conditioning cut tobacco
US2799278A (en) * 1954-08-26 1957-07-16 Proctor & Schwartz Inc Method of treating tobacco
US2933090A (en) * 1956-03-15 1960-04-19 Proctor & Schwartz Inc Method for bulking tobacco
US3086533A (en) * 1961-02-09 1963-04-23 Rush D Touton Method for curing green tobacco
US3590826A (en) * 1966-05-04 1971-07-06 Hauni Werke Koerber & Co Kg Machine for blending tobacco or the like
US3612067A (en) * 1968-09-09 1971-10-12 Arenco Ab Apparatus for stretching and smoothing a natural tobacco leaf
US9604387B2 (en) 2010-04-22 2017-03-28 Forest Concepts, LLC Comminution process to produce wood particles of uniform size and shape with disrupted grain structure from veneer
US10105867B2 (en) 2010-04-22 2018-10-23 Forest Concepts, LLC Comminution process to produce engineered wood particles of uniform size and shape from cross-grain oriented wood chips

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NL45036C (nl)
DE666890C (de) 1938-10-31
NL42716C (nl)
BE409757A (nl)

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