US3092117A - Winnowing apparatus for cigarettemaking machines - Google Patents

Winnowing apparatus for cigarettemaking machines Download PDF

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Publication number
US3092117A
US3092117A US107514A US10751461A US3092117A US 3092117 A US3092117 A US 3092117A US 107514 A US107514 A US 107514A US 10751461 A US10751461 A US 10751461A US 3092117 A US3092117 A US 3092117A
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United States
Prior art keywords
airstream
particles
tobacco
passage
outlet
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Expired - Lifetime
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US107514A
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English (en)
Inventor
Labbe Francis Auguste Maurice
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Molins Machine Co Ltd
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Molins Machine Co Ltd
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/185—Separating devices, e.g. winnowing, removing impurities

Definitions

  • This invention concerns improvements in winnowing apparatus for cigarette-making machines and is particularly suitable for a machine in which cut tobacco is projected upwards by an airstream as a step in the formation of a tobacco filler.
  • the apparatus may be used on a machine of the kind described in the specification of U.S. Patent No. 3,030,965, granted April 24, 1962.
  • Such particles chiefly resemble a birds eye, being particles occurring when the stems are sliced transversely during the tobacco cutting operation at angles not tfiar removed from the normal to the stem axis. Such particles occur of course at random during cutting, according to the manner in which a particular leaf is presented to the cutting device. If the angle of presentation is such that a lengthy transverse slice is obtained the slice should be rejected.
  • the present invention provides a winnovving device arranged to reject stem, lumps, or large transverse slices of stem and means for recovering the birds eye and like useful particles from the winnowing operation and returning them to the tobacco from which the filler will be formed.
  • l he invention is applied to a cigarette-making machine in which cut tobacco is carried by a first airstream in the formation of a tobacco filler and having winnowing appanatus comprising a picker roller arranged to remove tobacco from a carded roller and throw it into a second airstream whereby light particles are carried away by said second airstream while heavier particles continue to move substantially along their original path to strike against a wall and thereafter to fall by gravity, and consists in a rotatable sifting device arranged to receive the falling particles and separate large pieces of stem or the like and deliver them to an outlet and permit smaller particles to pass through the sifting device to another outlet and means for delivering said smaller particles to the said second airstream which carried the aforesaid light particles.
  • the means for delivering said smaller particles to the said second airstream may comprise a third airstrea-m converging with said second airstream and in such case the second outlet may comprise a rotatable airlock arranged to close a passage leading to a further passage through which the said third airstream flows.
  • the third airstream is only effective on particles re- 3,ll%Z,l l7 Patented June 4, 1963 leased from the sec-ond outlet by the rotatable airlock and cannot pass through the sifting device.
  • the airlock serves as a one-way valve, letting tobacco go one way and preventing air from passing through the other way.
  • the outlet into which the stem material is delivered by the sifting device may have an lairstream, the fourth airstream, flowing through it towards the second airstream, carrying the light particles, to subject the stem and like discarded material to a further winnowing operation to strip any fragments of light material from the discarded material and convey such fragments to the said second airstream.
  • the stem outlet may also have a rotatable airlock arranged at its outer end whereby collected material can be delivered to a conveyor or the like, which is thus isolated from the outlet, and walls defining the stem outlet may have perforated plates, located above the last mentioned airlock, through which the fourth airstream can enter.
  • the second, third and fourth airstreams flow eventually into the first airstream and it is convenient to cause all airstreams to be subject to a common source of suction.
  • a further rotatable airlock is provided to isolate the sifting device from said second a-irstream.
  • the cut tobacco will be carried upward by the first airstream, and in the case of the specification referred to, substantially vertically upward, and thus the second, third and fourth streams will also flow in an upward direction.
  • the first airstream passes into an upwardly directed passage and in such case guide walls, or equivalent srtuctures forming passages, are provided to confine the airstream, and particles to a path leading into the entry of the passage.
  • Means may be provided for regulating the size of crosssection :of the guide passages to alter the shape and consequently alter the velocity of the air through them.
  • FIGURE 1 is a small scale diagrammatic section of a machine embodying apparatus according to the invention.
  • FIGURE 2 is an enlarged sectional view of part of FIGURE 1, showing more detail.
  • a carded roller 1 removes cut tobacco from a supply contained in a reservoir formed between a wall 2, a carded roller 3 and the roller 1.
  • the tobacco is carried out of the reservoir by the roller 1, surplus tobacco above the carding being swept back by the roller 3 which is a brushing or refuser roller.
  • Tobacco is delivered to the reservoir in any suitable way and the invention is not concerned with such delivery.
  • Beneath the roller 1 is a shield 30 with an adjustable end 31, see FIGURE 2. This can be adjusted to leave a small space between it and a plate 6 so that dust and tobacco fragments may be carried upward and over the plate 6 by air passing through said space as described later.
  • a fast rotating picker roller 4 picks tobacco from the carding of roller 1 in the usal way, the roller operating over a short concave bar 5.
  • the picked tobacco is thrown across the plate 6 towards a rotating roller 7 which is perforated as explained later.
  • the roller in conjunction with a guide member 8 forms the entry to a long narrow vertical passage 9.
  • a further concave bar 5A functioning as a shield is provided.
  • the passage 9 is partly stopped at its upper end by a perforated conveyor tape 10 on which a filler is formed in the manner described in US. Patent No. 3,030,965.
  • a suction chamber 11 Above the tape is a suction chamber 11 whereby suction is exerted through the perforations of the tape and thus there is an upward airstream through the passage 9.
  • This airstream which conveys tobacco for filler formation, is the above mentioned first airstream.
  • a fan or the like 12 Suction in the passage 9 and through the tape 10 is created by a fan or the like 12, and exhaust from the fan passes to a group of cyclone separators 13 so that tobacco dust in the airflow from the fan may be removed before the air is discharged, for example, to the exterior of the building containing the machine.
  • a perforated plate 14, made for example of expanded slit or slotted sheet metal as described in the specification of the above-mentioned patent is provided, and air passing upward through the perforations, due to the aforesaid suction, will constitute the said second airstream and pass across the path of the thrown tobacco and carry upward into the passage 9 the majority of the shreds of tobacco which the second airstream is capable of lifting.
  • the remaining thrown tobacco, chiefly stem material continues substantially on its path to strike against a wall 15 from which it falls downwardly into a chamber having an opening 36 formed at the bottom.
  • the opening leads into a circular chamber 37 closed by the rotatable airlock 38 so that fragments of tobacco material falling into the chamber are periodically moved out through an outlet 39 as the airlock rotates.
  • Material so removed is delivered on to a sifting device comprising two rows of discs 40 and 41 having serrated edges or teeth.
  • the discs are intercalated as shown in FIGURE 2 wherein the discs of one row are inserted alternately between the discs of the other row.
  • the discs are spaced apart sufiiciently to permit desirable pieces of material to slide through them. Larger pieces are carried upward and away from the aperture 39 by the teeth of the discs 40 which have their radial edges arranged to effect this movement.
  • Material which passes between the assemblage of serrated discs is discharged by them into a further chamber 42 having an outlet 43 leading into a circular chamber 54 closed by a rotatable airlock 44.
  • Beneath the airlock 50 is a channel 51, running at right angles to the plane of the paper and inside the channel is a worm or other conveyor 52 by which material rejected from the machine may be conveyed to any desired point.
  • the fan 19 may be arranged to cause the major part of the airflow up the passage 9 as far as the screen 22.
  • An air duct 53 having the perforated rotatable cylinder 7 at its inlet and closely fitting said inlet has two fixed members 55 and 56 in its interior so that air can only enter the duct 53 through the cylinder wall and between the members 55 and 56.
  • the cylinder is also in close contact with the entrance to the passage 9, which passage is substantially the length of the carded roller 1 as considered at right angles to the plane of the paper.
  • - duct 53 is divided into three sections 57, 58 and 59 by partitions which curve upwards from its inlet, then run horizontally as shown and are arranged with a passage means whereby air from the cylinder 7 may flow to the pipe 24
  • the rotatable cylinder 7 and the airflow therethrough assist in directing airborne tobacco to the passage 9. All these devices are explained at great length and in detail in the patent first referred to, to which reference may be made for further information.
  • the first airstream, moving upwardly in passage 9, is as previously mentioned caused partly by suction through the perforated tape 10 by the fan 12.
  • the fan 19 causes a circulation of air through the perforated cylinder 7, shown in FIGURE 2, and the duct 53 to the pipe 20 and fan 19 which discharges the air through a pipe 28, into a box 60 having a perforated screen 61, for example of expanded slit or slotted metal, as its outlet.
  • the circulation in this system is therefore to some extent closed but the air from (the second airstream) which has to pass through the perforated plate 14 to reach the cylinder 7 helps to draw light particles towards the inlet to the passage 9 and some of the air will pass up the passage by suction through the branch 20A and to that extent augments the other airflow up the passage.
  • the effect of the additional suction in the passage 9 caused by the fan .19 is to increase the velocity of the airflow in the passage over that given to the air by the fan -12 and the airborne shreds of tobacco, due to their velocity, pass up to the tape and do not, in any material degree, attempt to pass through the screen 22.
  • the upward airstream (the first airstream) in the passage 9 also causes a fourth airstream to pass upwardly through the outlet 48 which is connected to the mouth of the passage 9 by a passage 63, which passes through a duct in guide member 8. Air enters the outlet 48 through perforated plates 64 near the chamber 49 and additional air can enter through an adjustable aperture 65.
  • the third and fourth airstreams have a common source of air which enters the housing containing the rotary airlocks and airstream ducts by means (not shown) situated near the bottom of the housing.
  • the member 8 previously mentioned is a long structure, as long as the passage 9 considered at right-angles to the plane of the paper and has a number of curved flange-like guides or vanes 8A along its length. These guides give the air a component of movement in the direction of movement of the tape 10.
  • the vertical walls (not shown) located at both ends of the passage 9 are set at an appropriate angle of inclination to the length of tape 19 to allow for this forward component of movement of the ascending airstream.
  • Air flows round the structure and between the guides and the shape of the surface of 8 around which the air flows may be of a curvature found most efficient in practice.
  • a chain line, shown in FIGURE 2 indicates a possible different curvature.
  • a wall of the outlet 48 and a wall of the passage 63 are adjustable and the member 8 is adjustable by pivotal movement on its axis. It will be seen that the size and position of the air passages can be regulated to a fine degree. Because of the fourth airstream passing up the outlet 48 the airlock 38 is provided to isolate the chamber 35 from said outlet so that the fourth airstream must go through passage 63. Similarly the airlock 44 isolates the chamber 42 and compels air drawn into the passage 46 at its lower end, to constitute the third airstream, to continue to move up the passage to the chamber 35. In view of the suction drawing air up through the perforated plate 14, some air will flow between 6 and 31 as previously mentioned and take up the shorts.
  • the apparatus described is capable of winnowing the tobacco very effectively and can be adjusted to suit any given requirements as to the extent of the separation desired.
  • the selection of birds eye particles and the like for return to the second airstream may be regulated by conventional means, by altering the spacing between the discs of the sifting device or altering the speed of rotation of the discs to give small pieces more opportunity to fall between the discs.
  • a picker roller arranged to remove tobacco from a carded roller and throw it into a second airstream whereby light particles are carried away by said second airstream while heavier particles continue to move sub stantially along their original path to strike against a wall and thereafter to fall by gravity;
  • a rotatable sifting device arranged to receive the falling particles and separate large particles and deliver them to a first outlet and permit smaller particles to pass through said sifting device to a second outlet and means for delivering said smaller par ticles to said second airstream which carries the aforesaid light particles.
  • Apparatus as claimed in claim 1 in which the means for delivering said smaller particles to said second air stream comprises a third airstream converging with said second airstream.
  • said third outlet is defined by walls and has a rotatable airlock arranged at its outer end whereby said large particles can be delivered to a conveyor, which is thus isolated from said third outlet, and the walls defining the said third outlet having perforated plates through which said fourth airstream can enter.
  • Apparatus as claimed in claim 4 comprising common sources of suction for all four airstreams and a rotatable airlock to isolate said sifting device from said second airstream.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US107514A 1960-05-16 1961-05-03 Winnowing apparatus for cigarettemaking machines Expired - Lifetime US3092117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17182/60A GB934816A (en) 1960-05-16 1960-05-16 Improvements in winnowing apparatus for cigarette-making machines

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US3092117A true US3092117A (en) 1963-06-04

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US (1) US3092117A (en(2012))
BE (1) BE603551A (en(2012))
CH (1) CH373679A (en(2012))
DE (1) DE1233311B (en(2012))
GB (1) GB934816A (en(2012))
NL (1) NL264715A (en(2012))

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189034A (en) * 1962-03-28 1965-06-15 Molins Machine Co Ltd Method of and apparatus for feeding cut tobacco in a machine for making tobacco products
US3209762A (en) * 1962-02-22 1965-10-05 Molins Organisation Ltd Winnowing apparatus for a continuous rod cigarette-making machine
US3374795A (en) * 1964-09-11 1968-03-26 Molins Organisation Ltd Apparatus for making continuous cigarette rods
US3443688A (en) * 1962-07-18 1969-05-13 Molins Organisation Ltd Machines for manipulating cut tobacco
US3665932A (en) * 1966-12-09 1972-05-30 Hauni Werke Koerber & Co Kg Apparatus for feeding and classifying cut tobacco
US3980087A (en) * 1971-07-28 1976-09-14 Molins Limited Tobacco feed systems
US4041958A (en) * 1974-03-02 1977-08-16 Hauni-Werke Korber & Co. Kg Apparatus for producing a continuous tobacco stream
US4417594A (en) * 1980-11-21 1983-11-29 Sasib S.P.A. Apparatus forming a continuous cut tobacco braid in a cigarette making machine
US4875495A (en) * 1987-08-14 1989-10-24 Philip Morris Incorporated Separation of light particles from heavy particles in a stream of particulate matter
US4915824A (en) * 1985-08-12 1990-04-10 Surtees Guy F Pneumatic classifier for tobacco and method
US5205415A (en) * 1991-07-10 1993-04-27 The Standard Commercial Tobacco Co., Inc. Modular classifier
US5325875A (en) * 1987-08-24 1994-07-05 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US6435191B1 (en) 1999-02-26 2002-08-20 Dimon Inc. Tobacco separator
DE10240617C1 (de) * 2002-09-03 2003-12-11 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Justierung der Ausselektion von Winnowings
CN108889465A (zh) * 2018-07-20 2018-11-27 云南昆船烟草设备有限公司 一种烟丝物料的分离设备及方法
CN108936797A (zh) * 2018-09-06 2018-12-07 红塔烟草(集团)有限责任公司 一种用于爆珠烟支的回收装置
CN113397199A (zh) * 2020-03-17 2021-09-17 秦皇岛烟草机械有限责任公司 一种原烟姿态调整设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1504732A (en) * 1975-02-01 1978-03-22 Molins Ltd Cigarette making machines
FR2503991A1 (fr) * 1981-04-16 1982-10-22 Molins Ltd Perfectionnements apportes aux machines a fabriquer les cigarettes
DE3534249C2 (de) * 1984-10-10 1998-07-02 Hauni Werke Koerber & Co Kg Vorrichtung zum Aufbereiten von Tabakfasern im Verteiler einer Zigarettenstrangmaschine
GB2231770B (en) * 1989-05-26 1993-03-10 Cardwell Machine Company Apparatus and method for processing inhomogeneous material such as tobacco

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB378143A (en) * 1931-06-20 1932-08-11 Imp Tobacco Co Ltd Improved apparatus for removing dust or small particles from cut tobacco for use in cigarette making machinery
US1952336A (en) * 1930-08-01 1934-03-27 Firm Universelle Cigarettenmas Tobacco feeding apparatus
GB764551A (en) * 1954-01-07 1956-12-28 Decoufle Usines Improvements in or relating to devices for forming cigarette rods in cigarette-making machines
US2932300A (en) * 1956-11-14 1960-04-12 American Mach & Foundry Cigarette machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE266385C (en(2012)) *

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952336A (en) * 1930-08-01 1934-03-27 Firm Universelle Cigarettenmas Tobacco feeding apparatus
GB378143A (en) * 1931-06-20 1932-08-11 Imp Tobacco Co Ltd Improved apparatus for removing dust or small particles from cut tobacco for use in cigarette making machinery
GB764551A (en) * 1954-01-07 1956-12-28 Decoufle Usines Improvements in or relating to devices for forming cigarette rods in cigarette-making machines
US2932300A (en) * 1956-11-14 1960-04-12 American Mach & Foundry Cigarette machine

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209762A (en) * 1962-02-22 1965-10-05 Molins Organisation Ltd Winnowing apparatus for a continuous rod cigarette-making machine
US3189034A (en) * 1962-03-28 1965-06-15 Molins Machine Co Ltd Method of and apparatus for feeding cut tobacco in a machine for making tobacco products
US3443688A (en) * 1962-07-18 1969-05-13 Molins Organisation Ltd Machines for manipulating cut tobacco
US3374795A (en) * 1964-09-11 1968-03-26 Molins Organisation Ltd Apparatus for making continuous cigarette rods
US3665932A (en) * 1966-12-09 1972-05-30 Hauni Werke Koerber & Co Kg Apparatus for feeding and classifying cut tobacco
US3980087A (en) * 1971-07-28 1976-09-14 Molins Limited Tobacco feed systems
US4041958A (en) * 1974-03-02 1977-08-16 Hauni-Werke Korber & Co. Kg Apparatus for producing a continuous tobacco stream
US4417594A (en) * 1980-11-21 1983-11-29 Sasib S.P.A. Apparatus forming a continuous cut tobacco braid in a cigarette making machine
US4915824A (en) * 1985-08-12 1990-04-10 Surtees Guy F Pneumatic classifier for tobacco and method
US4875495A (en) * 1987-08-14 1989-10-24 Philip Morris Incorporated Separation of light particles from heavy particles in a stream of particulate matter
US5476109A (en) * 1987-08-24 1995-12-19 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US5325875A (en) * 1987-08-24 1994-07-05 Universal Leaf Tobacco Co., Inc. Apparatus for separating threshed leaf tobacco
US5205415A (en) * 1991-07-10 1993-04-27 The Standard Commercial Tobacco Co., Inc. Modular classifier
US5358122A (en) * 1991-07-10 1994-10-25 The Standard Commercial Tobacco Company, Inc. Multiple stage tobacco classifier
US6435191B1 (en) 1999-02-26 2002-08-20 Dimon Inc. Tobacco separator
DE10240617C1 (de) * 2002-09-03 2003-12-11 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Justierung der Ausselektion von Winnowings
CN108889465A (zh) * 2018-07-20 2018-11-27 云南昆船烟草设备有限公司 一种烟丝物料的分离设备及方法
CN108889465B (zh) * 2018-07-20 2023-09-15 云南昆船烟草设备有限公司 一种烟丝物料的分离设备及方法
CN108936797A (zh) * 2018-09-06 2018-12-07 红塔烟草(集团)有限责任公司 一种用于爆珠烟支的回收装置
CN108936797B (zh) * 2018-09-06 2020-10-27 红塔烟草(集团)有限责任公司 一种用于爆珠烟支的回收装置
CN113397199A (zh) * 2020-03-17 2021-09-17 秦皇岛烟草机械有限责任公司 一种原烟姿态调整设备
CN113397199B (zh) * 2020-03-17 2024-05-14 秦皇岛烟草机械有限责任公司 一种原烟姿态调整设备

Also Published As

Publication number Publication date
GB934816A (en) 1963-08-21
CH373679A (fr) 1963-11-30
BE603551A (fr) 1961-09-01
DE1233311B (de) 1967-01-26
NL264715A (en(2012))

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