US2535692A - Rotary knife tobacco cutting machine - Google Patents

Rotary knife tobacco cutting machine Download PDF

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Publication number
US2535692A
US2535692A US64413346A US2535692A US 2535692 A US2535692 A US 2535692A US 64413346 A US64413346 A US 64413346A US 2535692 A US2535692 A US 2535692A
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US
United States
Prior art keywords
tobacco
conveyor
cheese
stream
leaves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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English (en)
Inventor
Molins Desmond Walter
Ruau Felix Frederic
Dearsley George
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Molins Machine Co Ltd
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Molins Machine Co Ltd
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Filing date
Publication date
Application filed by Molins Machine Co Ltd filed Critical Molins Machine Co Ltd
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Publication of US2535692A publication Critical patent/US2535692A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B7/00—Cutting tobacco
    • A24B7/04—Cutting tobacco by machines with revolving knives
    • A24B7/08—Cutting tobacco by machines with revolving knives with several knives which act one after the other
    • A24B7/10—Cutting tobacco by machines with revolving knives with several knives which act one after the other with cutter axes parallel to the feeding direction
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B7/00—Cutting tobacco
    • A24B7/14—Feeding or control devices for tobacco-cutting apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6572—With additional mans to engage work and orient it relative to tool station
    • Y10T83/6577—With means to adjust additional means

Definitions

  • This invention concerns improvements in or relating to rotary tobacco cutting machines.
  • the leaves are first compressed into a solid mass frequently referred to as a cheese.
  • a cheese As the leaves are of a substantial area relatively to their thickness it will be seen that if the mass of leaves is compressed from two opposite sides only, then the mass of leaves will naturally form a cheese having strata Whose planes are substantially normal to the direction in which the compression is applied.
  • the cutter cuts across the end of the cheese with a broad knife whose edge moves parallel to itself in the same direction as the above mentioned direction of compression, although the edge of the knife is usually at an angle to the strata of thecheese to secure; a shearing cut.
  • the earlier forms of cutting machine imitated this motion, being, in effect, guillotines of various designs.
  • the intersections 'is applied and the direction of compression are intended to mean the general line along which athe tobacco itself is condensed from opposite the knives at one side of the cheese.
  • the intersections 'is applied and the direction of compression are intended to mean the general line along which athe tobacco itself is condensed from opposite the knives at one side of the cheese.
  • such an arrangement requires a considerable amount of floor space, and also requires thatihe radial extent of the cutter arms and knives should be very long so that the full 16 inches width of the cheese is covered; thus a veryconsiderable leverage is applied.
  • Such an arrangement would not be desirable in the case of machines designed primarily for large output.
  • the leverage on the cutter arms can of course be reduced by reducing the width of the cheese, but reducing the width of the cheese merely reduces, the output unless the width of the side walls is increased. However, increasoing the width of the side walls upsets the feeding of the of the strata with the cutting face of the cheese.
  • Machines having rotating cutter-heads have been extensively used in practice, such machines having converging top and bottom conveyor bands, and a knife-head rotatable about an axis which is located above the mouthpiece and extends in the same general direction as the tobacco stream.
  • a large output is maintained by keeping the proportions of, the cheese substantially the same as mentioned above by placing the center of rotation ofthe 3 5 51 W? he *cheese, thus cutting across 3 the widtirof the cheese andesubstantiallyralong the strata.
  • Thiscombination which feeds the tobacco between two side f conveyor systems which compact "the stream laterally, and carries the stream on a 'bottom conveyor system, makes it possible to feed "*a-compressed stream of relatively large cross- '--'sectional area, since at leastthree sides of the stream are engaged and'transported by conveyor systemsjbut the limitations previously essential inthe dimensions of the compressed cheese in tobacco cutters, due to the presence of two sta- "tionary walls, are removed, so that the present arrangementof conveyors gives much wider latitude-in 'thechoice of the cross-sectional dimensions' of the cheese on the part of the designer of the'machine.
  • a tobacco-cutting ,machine comprising the I combination ofia cutting .mouth or mouthpiece with means.toffeedandcompress leaves to form a "cheese; said meansLincludin a relatively widebottom conveyor-system adapt ed to receive andsupport. the leave andon which "the leaves arefed' forwardly as a stream, to comjpress the" leaves duringsuch forward movement laterally so as to reducethewidth.
  • Thebladeedgez may be substantially radial to the axis of rotation of the knife-head and the axis-.dfthe knife 'head is located on a line above and substantially along the midwidth of the stream.
  • top and a bottom systems may'be substantially parallel so-that no compression isproduced therebyzrexcept insofar as theyfformxeacting surfaces.
  • the bottom conveyor system may "comprise three conveyors arranged side by'side, the middle one-being longer than the side onesso as tovapproachnearerlto the:mouthpiece
  • the bottom zconveyor system*ma-y be tiltedaso as tohave the tobacco outlet higher than-the tobacco inlet.
  • Automatic feedingmeans may be provided to deliver leaves at the rear end of the machine, comprisinga substantiallyyertica-l chute whereby .the vleaves are partly compressed bygravity and therear wall ofthechute i oscillated-towardsand awayfrom the mass of tobacco in .the chute to facilitate .theidownward movement of the tobacco and to ,providea compressing .-0r compactingforce .as the chute wall movesinwards andpresses tobacco. against. the, rea end of the tobacco stream.
  • Figurel is a side elevationof the machine.
  • Figure 2 is a plan ofpart of Figure lilooking inthe direction oftthe arrow A and shows the general arrangement of the bottom and side conveyors.
  • Figure 3 is an elevationof part of Figure 1 looking in the direction of the arrow'B and shows the knife-head and neighbouring parts.
  • Figure 4 is asi'de'elevation showing the'cons'tructicn of the conveyor "chains and sprockets.
  • Figure'fi is a plan of part of the chain shown in Figure 4.
  • Figure *6 shows a method of supporting the "lower run of-the topconveyor chain.
  • the cutterhead- I * consists of a spider on which are"'m0unted”at equally spaced angles a six blades T2 whose ed'ses sweep acrcss "'a'j-Cllltbing"mO1llih or mouthpiece 3 .(asshown in' Figure 1).
  • 'Thegeneralmethod 10f mounting, i-grind'ing and "feeding-the fblades forwards -- is :substantially” as shown in British .i-Patent SpecificationyNo. ;365,997,-:except that :in the present ,ca'sez-the" cutting edges :of .thekblades are-radial .or-substantially.
  • the edge of the blade just touches the front face of the mouthpiece.
  • Top and bottom conveyor systems which are described below are located behind the mouthpiece and extend away therefrom in directions normal to the plane thereof. Lateral conveyor systems are similarly arranged except that they diverge as they extend away from the mouthpiece.
  • a conveyor consists of a number of links 5 of the kind shown in Figure 4, pivoted together to form an endless chain which is mounted on sprockets, 6, Figure 4, which support and drive the chain.
  • the tobacco engaging surface of the links are so constructed that they provide a substantially continuous plane surface for this purpose.
  • the chains are shown by single lines and the sprockets by cylinders,
  • the top and lateral conveyor systems each consist of a single conveyor 1, 8 and 9 respectively.
  • the spindles of the rear sprockets being journalled in brackets 26, which also support a chute l 4 described later.
  • the bottom system consists of three side by side conveyors Ill, H and I2 respectively, their rear ends being supported on sprockets carried by a single spindle represented in Figure 2 by its axis l3, so that a broad conveying surface is provided nearly as wide as the greatestdistance between the lateral conveyors, that is at their rear end.
  • the rest of the rear end of the tobacco supportin surface is formed by fixed plates.
  • the triangular gaps between the bottom and side conveyors at the mouthpiece end are also filled by fixed plates.
  • the lateral conveyors 8 and 9 converge towards the mouthpiece to a distance which is rather less than the width of the middle conveyor Ill of the bottom system and the said middle conveyor is, as shown in Figure 2, of such length as to reach up to the mouthpiece while the two conveyors II and I2 at its sides are reduced in length in order to allow space for brackets and other parts which carry the spindles and sprockets which support the lateral conveyors at the forward ends and also because at this position they no longer engage the tobacco owing to the reduced distances between the lateral conveyors.
  • top conveyor I it is not easy nor entirely necessary to arrange the top conveyor I in the same way as the bottom one and therefore a single conveyor is used similar to the middle conveyor Ill of the bottom system and the remainder of the width of the converging passage is filled in by cover plates 23, Figure 6.
  • cover plates 23, Figure 6 cover plates 23, Figure 6.
  • the conveyors are all driven by gearing coupled to the spindle of the knife head, which is represented in Figure 1 by its axis 4 and the whole machine is driven by a motor 21.
  • the leaves are fed, e. g. from a conveyor beltor the trunking of a conveyor system, or as shown in Figure 1, from a feed box 25 into a substantially vertical chute M of a cross section similar to that of the conveyor passage at its rear end.
  • a substantially vertical chute M of a cross section similar to that of the conveyor passage at its rear end.
  • the chute is sufiiiciently high to cause the leaves to be packed a little under their own weight and the lower end is a curved at 15 to lead into the passage.
  • the rear wall l5 of the chute is pivoted at its upperend at I!
  • the preliminary massing of the leaves by means of the rear wall l5 of the chute is eifected only to pack the leaves to an extent such that the leaves are loosely compact and so that the mass has a substantially constant weight per unit volume to enable the leaves to be fed on to the bottom conveyor of the tobacco-cutting machine at a substantially constant rate.
  • This preliminary massing is obtained by only a relatively light pressure compared with a compression such as is necessary for forming the cheese or even with a significant proportionof such compression.
  • Tobacco is fed forwardlytowards the mouthpiece and in so moving it is compressed laterally so as to reduce the width of the stream to form "-t-het'ob'acco stream *remains constant atabout -6".
  • "Ii-his construction has the t'advantage of *not'only ensuring that-the strata-in the"cheese are planes substantially normal to the-bottom 'tobacco' supporting surface which is con- -stituted by the "various supporting plates and theconveyors "I 0, II and 'l2'so that the edge of the blade in 'cutting across the edges is ub- -s'tantially 'parallel 'to the strata and 'thereby' *gives' the "improved cut, but also 'due to the extreme Width and small depth of the tobacco "'strea'm atthe"rear 'end "of the machine at'the bottom of the chute l4,the'tobacco can be more easily*
  • a tobacco-cutting machine, ,as claimed'in claim 1, and comprising automatic'feeding means .todeliver tobacco leaves'to the said bottom conveyor at the inlet end of thecompression-ch'amher, said automatic 'feedingfm'eans, comprising :a substantially vertical chute wherebythe leaves arepar'tl packed by gravity, arear wall tosaid .chute, and means to-oscillate .said rear walltoward and .awayfrom .the tobacco-.inthe chute to facilitate the downward" movement of .thetobacco andtoprovide a,.preliminary massingof .theleaves.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US64413346 1945-01-31 1946-01-29 Rotary knife tobacco cutting machine Expired - Lifetime US2535692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB255701X 1945-01-31

Publications (1)

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US2535692A true US2535692A (en) 1950-12-26

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US64413346 Expired - Lifetime US2535692A (en) 1945-01-31 1946-01-29 Rotary knife tobacco cutting machine

Country Status (6)

Country Link
US (1) US2535692A (de)
BE (1) BE462779A (de)
CH (1) CH255701A (de)
DE (1) DE863920C (de)
GB (1) GB588129A (de)
NL (1) NL67483C (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763307A (en) * 1950-04-04 1956-09-18 Robert Legg Ltd Machine for cutting tobacco and the like
US3004572A (en) * 1957-07-22 1961-10-17 Joe R Urschel Machine for slicing a food product
US3185196A (en) * 1963-08-01 1965-05-25 Robert Legg Ltd Machine for cutting leaf tobacco
US3335730A (en) * 1964-02-21 1967-08-15 Molins Organisation Ltd Feeding structure for tobacco cutting means
DE2623497A1 (de) * 1975-05-28 1976-12-16 Joh H Andresen Fa Vorrichtung zum richten von tabakblaettern

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167718B (de) * 1959-12-07 1964-04-09 Alfred Schmermund Schneidmaschine fuer Tabak mit einem umlaufenden Messerkopf
DE1141215B (de) * 1960-09-09 1962-12-13 Tabak & Ind Masch Vorrichtung zum Schneiden von Blattabak

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US41637A (en) * 1864-02-16 Improvement in tobacco-cutters
US63692A (en) * 1867-04-09 George m
US75805A (en) * 1868-03-24 spencer
US997595A (en) * 1911-07-11 Tobacco-cutting machine
US1153103A (en) * 1914-09-03 1915-09-07 William Mccormick Neale Cotton-seed press.
US1248856A (en) * 1916-11-07 1917-12-04 Albert T Hanby Printing-machine.
AU1222128A (en) * 1928-03-12 1928-12-27 J Britain and Inland ) Limited. William Sennett Thorn. Thomas Bompane Improvements in or relating to machines for shredding or cutting tobacco
US1758557A (en) * 1927-09-26 1930-05-13 Papec Machine Company Feeding device for ensilage cutters and the like
US2157457A (en) * 1937-01-04 1939-05-09 Mclins Machine Company Ltd Tobacco leaf cutting machine
US2275103A (en) * 1938-07-08 1942-03-03 Molins Machine Co Inc Tobacco leaf-cutting machine
US2314993A (en) * 1939-11-16 1943-03-30 Molins Machine Co Ltd Tobacco, tea, or like leaf cutting machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE580190C (de) * 1930-08-13 1933-07-07 Felix Frederic Ruau Tabakschneidmaschine
DE576829C (de) * 1931-10-14 1933-05-17 Walter Everett Molins Vorrichtung zum Zerschneiden von Tabakblaettern

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US41637A (en) * 1864-02-16 Improvement in tobacco-cutters
US63692A (en) * 1867-04-09 George m
US75805A (en) * 1868-03-24 spencer
US997595A (en) * 1911-07-11 Tobacco-cutting machine
US1153103A (en) * 1914-09-03 1915-09-07 William Mccormick Neale Cotton-seed press.
US1248856A (en) * 1916-11-07 1917-12-04 Albert T Hanby Printing-machine.
US1758557A (en) * 1927-09-26 1930-05-13 Papec Machine Company Feeding device for ensilage cutters and the like
AU1222128A (en) * 1928-03-12 1928-12-27 J Britain and Inland ) Limited. William Sennett Thorn. Thomas Bompane Improvements in or relating to machines for shredding or cutting tobacco
US2157457A (en) * 1937-01-04 1939-05-09 Mclins Machine Company Ltd Tobacco leaf cutting machine
US2275103A (en) * 1938-07-08 1942-03-03 Molins Machine Co Inc Tobacco leaf-cutting machine
US2314993A (en) * 1939-11-16 1943-03-30 Molins Machine Co Ltd Tobacco, tea, or like leaf cutting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763307A (en) * 1950-04-04 1956-09-18 Robert Legg Ltd Machine for cutting tobacco and the like
US3004572A (en) * 1957-07-22 1961-10-17 Joe R Urschel Machine for slicing a food product
US3185196A (en) * 1963-08-01 1965-05-25 Robert Legg Ltd Machine for cutting leaf tobacco
US3335730A (en) * 1964-02-21 1967-08-15 Molins Organisation Ltd Feeding structure for tobacco cutting means
DE2623497A1 (de) * 1975-05-28 1976-12-16 Joh H Andresen Fa Vorrichtung zum richten von tabakblaettern
US4050467A (en) * 1975-05-28 1977-09-27 Koninklijke Bedrijven Theodorus Niemeyer B.V. Apparatus for orienting tobacco leaves

Also Published As

Publication number Publication date
NL67483C (de) 1900-01-01
BE462779A (de) 1900-01-01
CH255701A (fr) 1948-07-15
GB588129A (en) 1947-05-14
DE863920C (de) 1953-01-22

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