US3170498A - Tobacco cutting machine with rotating knife top - Google Patents

Tobacco cutting machine with rotating knife top Download PDF

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Publication number
US3170498A
US3170498A US74113A US7411360A US3170498A US 3170498 A US3170498 A US 3170498A US 74113 A US74113 A US 74113A US 7411360 A US7411360 A US 7411360A US 3170498 A US3170498 A US 3170498A
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US
United States
Prior art keywords
axis
cutting edge
cutting
rotation
cutter
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
Application number
US74113A
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English (en)
Inventor
Schmermund Alfred
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.)
Maschinenfabrik Alfred Schmermund GmbH and Co
Original Assignee
Maschinenfabrik Alfred Schmermund GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Alfred Schmermund GmbH and Co filed Critical Maschinenfabrik Alfred Schmermund GmbH and Co
Application granted granted Critical
Publication of US3170498A publication Critical patent/US3170498A/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • Y10T83/303—With tool sharpener or smoother
    • 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
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6633—By work moving flexible chain or conveyor
    • 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
    • Y10T83/727—With means to guide moving work
    • Y10T83/739—Positively confines or otherwise determines path of work
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8789—With simple revolving motion only
    • Y10T83/8794—Revolving tool moves through recess in work holder or cooperating tool
    • Y10T83/8795—Progressively cutting
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8789—With simple revolving motion only
    • Y10T83/8796—Progressively cutting

Definitions

  • the invention relates to machines for cutting tobacco or similar fibrous material, such as tea.
  • Machines for cutting tobacco have been proposed which comprise a cutter head rotatably arranged in front of anozzle through which tobacco to be cut is fed.
  • each cutter will progressively engage the tobacco to be cut, since if, at the beginning of a cutting action, the entire cutting edge engages the tobacco to be cut an irregular chopping action rather than an even slicing action will result.
  • the present invention consists of a machine for cutting tobacco or similar fibrous material comprising a rotatable head provided with one or more cutters co-operating with an end of a nozzle for feeding the material to be cut to the cutter, the axis of rotation of the cutter head being arranged at an acute angle to the plane of cutting; cutters being so formed and arranged relatively to the said axis of rotation that, on each complete revolution of the cutter head, the cutting edge moves progressively across the width of said nozzle opening.
  • FIG. 1 is a side elevation, partly in section, of a tobacco cutting machine.
  • FIG. 2 is a sectional detail of the machine of FIG. 1 on a larger scale, taken substantially on the line 22 of FIG. 4.
  • FIG. 3 is a fragmentaryfront elevation partly in section of the machine of FIG. 1.
  • FIG. 4 is a section taken along the line 44 of FIG. 2.
  • FIG. 5 diagrammatically illustrates a modification of the arrangement of cutters of the machine.
  • FIG. 6 is a top plan view of the arrangement of FIG. 5.
  • FIG. 7 diagrammatically illustrates another modification of a cutter arrangement
  • FIG. 8 is a top plan view of the arrangement of FIG. 7.
  • the tobacco cutting machine of FIGS. 1 to 4' comprises a box-like frame 20 and an auxiliary frame con nected to the main frame 20 and held in position relative theretoby struts 28 and nuts 27 (see FIG. 1).
  • Rollers 52 are supported on the frame 20 on shafts 51 around which belts 53 are trained for feeding tobacco to be cut to a feed nozzle 19; the rollers 52 being coupled together for equal movements by a train of wheels 54 rotatable upon shafts 55.
  • the feed nozzle 19 is mounted in a wall of the frame 20 and extends therethrough.
  • the drum has a blade supporting end in the shape of'a truncated cone with the apex angle a (see FIG. 2).
  • the drum is keyed to a shaft 10 which is inclined from the vertical relatively to the free end of the nozzle 19 by an angle which equals a/ 2.
  • the shaft 10 is rotatably mounted at its upper end in a bearing 41 and at its lower end in an inclined roller bearing 17 (FIG. 2) supported by a seat 18.
  • the bearings 41 and 17 are fixed to the auxiliary frame 50.
  • Underneath the nozzle 19, which serves the purpose of'feeding caked tobacco 21 to the cutter drum, is a downwardly inclined chute 23 supported by frame 20 for removing cut tobacco.
  • the drum comprises two relatively detachable seg mental parts 13 and 14 (see FIG. 4) connected together at 9. Above the parts 13 and 14, a disc 5 having 'a turned down skirt 6 is provided on the shaft 10, the periphery said grooves.
  • the skirt 6 being formed by two circular arcuate portions which are eccentrically disposed relatively to each other and with respect to the axis of shaft 10 shown'in FIG. 4.
  • the skirt 6 is provided with grooves eccentric to each other in which arcuate blade-like cutters '1 and 2 are mounted.
  • the cutters are fixed to the disc 5 and skirt 6 by studs 29 and they abut against :the'bottoms 60'of
  • the cutters 1 and 2 thus are adjustable bodily with the disc 5.
  • the assembledcutters are housed within segmental parts 3, which in turn are connected to and supported by a lid 4 keyed to the shaft 10 at 9 and attached to parts 3 at 11.
  • Rods 8 are fixed to the disc 5 and slidably extend through bushings 7 on the lid 4.
  • the rods 8 support a grooved collar 56 siideable along the shaft 10.
  • Means to adjust the position of the collar along shaft 10 comprise an arm 35 rigid with a member 47 which is slideable along a guide frame 46 attached to the main frame 20.
  • the member 47 has a nut 48 as a part thereof in which is screw threaded a spindle 57.
  • the latter is rotatably mounted on frame 50 and has an external wheel 56* The cutter head is thus adjusted along rods 8 by rotating the spindle 57.
  • a pulley 40 which is rotated by means of a V-belt 42 trained about a pulley 43 of an electric motor 44.
  • the motor 44 is mounted on a bracket 45 attached to the main frame 20.
  • a grinding device having a grinding disc 36.
  • This device is mounted on a shaft of an electric motor 37; the position of which can be adjusted relative to the cutters 1 and 2 by supporting guide means 38 and 39 in a direction at right angles to a supporting shaft 31, the axis of which parallels the side of the cone angle, and which has a bearing at 26 on frame 50. It can also be adjusted in a direction parallel to the shaft 31 by further guide means 32 and 33.
  • a rod 30 attached at 34 to the guide 33 the grinding device can be reciprocated through I "73 and are arched eccentric to each other.
  • the cutter head comprises segmental arcuate cutters 7t 71 and 72 which a are suitably connected as by a cutter head (not shown),
  • the cutting edges form parts of aconical surface of the apex angle or (see FIG. 2).
  • the cutting edges of the cutters lie at an Injthe embodiment of ros. 7 and s a cutter so is provided which in plan view forms a spiral or part of a spiral about a rotatable shaft 81 to which the cutter 8t) is connected as by a cutter head-(not shown), generally corresponding to the head shown in FIGS. 1 to 4.
  • a tobacco rod to be cut. is indicated at 82.
  • a grindingdisc I 83 is mounted on a rotatable shaft 81 the axis of which parallels the cone angle or.
  • the blade assembly at its cutting end 12 forms a frusto-conical body of rotation having the apex cutting angle.
  • the axis of rotationof the blade assembly is parallel to the axis of the angle on.
  • a machine for cutting fibrousmaterial such as tobacco the combination of a'supporting frame, a rotary head mounted on a fixed axis of rotation upon said frame comprising an outer cylindrical shaped casing portion and an'inner cylindrical shaped casing portion, means to variably extend and retractthe inner casing with respect to the outer casing in'the direction of the axis of the rotary
  • the cutting edge forms at the locus of cutting a conical surface having the apex
  • the cutting edge of the blade (or blades) lies in a plane atan acute angle to the axis of rotation of the cutter head with the high point of the plane located at the advancing side of a bladeor each blade so that the shearing action on the tobacco rod 21' takes place progressively from the top of the rod and then downward.
  • the cutter head having a plurality of blades or cutters or a single spiral-shaped cutter rotates in front of. the nozzle 19 in'the direction of the inscribedarrows 1 (see FIGS. 2 and 4).
  • the cutter can be punched out of steel band without any or very little waste. Even if v the cutters are thin, they. obtain the required rigidity by their curvature. Moreover, the cutting forces act on the cuttersmainly in the direction of the axis of rotation whereby wear of the cutters is kept within reasonable limits.
  • the leading edge of the blade is placed farther away from the axis head, a blade construction mounted betweensaid casing portions on, the inner cylindrical casing for movement therewith,.s'aid blade construction comprising an arcuate blade arrangement having a cutting edge protruding beyondsaid head and which cutting edge is tapered so that extendedrthe taper'would form a cone having a predeter mined apex angle beyond and in the same facing direction as the cutting edge, and means for feeding bunched fibrous material including a nozzle the exit plane of which lies in a side of said cone line as extended from'the cutting edge of the blade.
  • the combination comprising supporting means, a rotary head mounted on said supporting'means and rotatable about a stationary axis of rotation, means for mounting a blade on said head for rotation therewith, means for moving said blade relatively to said head in the direction of said axis of rotation, said blade being arcuate and eccentric relatively to said axis of rotation, said blade having a cutting edge vprotruding beyond said head, said cutting edge being tapered so that the taper forms part of a conical surface the apex of which lies on said axis of rotation, and means for feeding fibrous material towards said'cutting edge in a direction substantially perpendicular to said conical surface- I 3.
  • Inand for a machine for cutting fibrous material such as tobacco the combination comprising mounting means, at least one curved cutter carried by said mounting means, means for rotating said mounting means and therewith said cutter about an axis of rotation, said cutter being arranged eccentric to said axis of rotation and having an inner surface and an outer surface, said inner surface being parallel to said axis of rotation, a cutting edge on said cutter, said cutting edge being formed by a first marginal portion of said inner surface and a second marginal portion of said outer surface, said second marginal portion being inclined to said axis of rotation and forming a part of a conical surface having its apex on said axis of rotation, and means for. feeding fibrous material towardssaid cutting edge in a direction perpendicular angle of said conical surface.
  • a machine for cutting fibrous material such as tobacco comprising mounting means, at least one curved cutter carried by said mounting means, means for rotating said mounting means and therewith said cutter about an axis of rotation, means for displacing said cutter in the direction of said axis of rotation, said cutter being arranged eccentric to said axis of rotation, a cutting edge on said cutter, said cutting edge being formed by a first marginal portion of an inner surface of said cutter and a second marginal portion of an outer surface of said cutter, said second marginal portion forming a part of a conical surface having its apex on said axis of rotation, means for feeding fibrous material towards said cutting edge in a direction perpendicular to said conical surface, means for sharpening said cutting edge, said sharpening means being arranged for acting on said second marginal portion, and guide means for reciprocating said sharpening means along a straight line forming an acute angle with and intersecting said axis of rotation, said acute angle equalling one half of the apex angle of said conical surface.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Manufacture Of Tobacco Products (AREA)
US74113A 1959-12-07 1960-12-06 Tobacco cutting machine with rotating knife top Expired - Lifetime US3170498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH27096A DE1167718B (de) 1959-12-07 1959-12-07 Schneidmaschine fuer Tabak mit einem umlaufenden Messerkopf

Publications (1)

Publication Number Publication Date
US3170498A true US3170498A (en) 1965-02-23

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ID=7430664

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Application Number Title Priority Date Filing Date
US74113A Expired - Lifetime US3170498A (en) 1959-12-07 1960-12-06 Tobacco cutting machine with rotating knife top

Country Status (4)

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US (1) US3170498A (de)
CH (1) CH388162A (de)
DE (1) DE1167718B (de)
GB (1) GB901589A (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032381A (en) * 1912-03-28 1912-07-16 Malcomb M Currie Cutter.
AT120677B (de) * 1929-12-11 1931-01-10 Robert Ing Biss Kegelförmiges Messer.
US2262912A (en) * 1938-10-06 1941-11-18 A F Dormeyer Mfg Co Electric food mixer
US2614596A (en) * 1949-04-05 1952-10-21 Robert Legg Ltd Machine for cutting tobacco and the like
US2664160A (en) * 1950-07-10 1953-12-29 Ici Ltd Apparatus for cutting artificial filaments into short lengths
US2829694A (en) * 1955-11-16 1958-04-08 Grasslander Co Ltd Expendable forage cutting blade and mounting
US2835299A (en) * 1953-02-16 1958-05-20 Koerber & Co Kg Removable drum type tobacco cutting machine with fixed grinding means

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE680818C (de) * 1937-04-28 1939-09-07 Herbert Schramm Tabakschneidmaschine
BE462779A (de) * 1945-01-31 1900-01-01
FR1062108A (fr) * 1951-10-08 1954-04-20 Dispositif à coupe hélicoïdale applicable aux machines pour hacher le tabac et autres produits végétaux

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032381A (en) * 1912-03-28 1912-07-16 Malcomb M Currie Cutter.
AT120677B (de) * 1929-12-11 1931-01-10 Robert Ing Biss Kegelförmiges Messer.
US2262912A (en) * 1938-10-06 1941-11-18 A F Dormeyer Mfg Co Electric food mixer
US2614596A (en) * 1949-04-05 1952-10-21 Robert Legg Ltd Machine for cutting tobacco and the like
US2664160A (en) * 1950-07-10 1953-12-29 Ici Ltd Apparatus for cutting artificial filaments into short lengths
US2835299A (en) * 1953-02-16 1958-05-20 Koerber & Co Kg Removable drum type tobacco cutting machine with fixed grinding means
US2829694A (en) * 1955-11-16 1958-04-08 Grasslander Co Ltd Expendable forage cutting blade and mounting

Also Published As

Publication number Publication date
GB901589A (en) 1962-07-18
DE1167718B (de) 1964-04-09
CH388162A (de) 1965-02-15

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