US2165217A - Tobacco stemming - Google Patents

Tobacco stemming Download PDF

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Publication number
US2165217A
US2165217A US48353A US4835335A US2165217A US 2165217 A US2165217 A US 2165217A US 48353 A US48353 A US 48353A US 4835335 A US4835335 A US 4835335A US 2165217 A US2165217 A US 2165217A
Authority
US
United States
Prior art keywords
stem
saws
cutting
stemming
tobacco
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
US48353A
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English (en)
Inventor
Wilhelm B Bronander
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.)
International Cigar Machinery Co
Original Assignee
International Cigar Machinery 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 International Cigar Machinery Co filed Critical International Cigar Machinery Co
Priority to US48353A priority Critical patent/US2165217A/en
Priority to GB2479/36A priority patent/GB461523A/en
Priority to FR802080D priority patent/FR802080A/fr
Priority to DEI54199D priority patent/DE673048C/de
Application granted granted Critical
Publication of US2165217A publication Critical patent/US2165217A/en
Anticipated expiration legal-status Critical
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
    • A24B5/00—Stripping tobacco; Treatment of stems or ribs
    • A24B5/04—Stripping tobacco; Treatment of stems or ribs by cutting out the stem

Definitions

  • This invention relates to tobacco stemming and has for its general object cutting the blade portions of tobacco leaves from the stem in an improved manner.
  • the invention is particularly designe-d for, al-
  • the principal objects, therefore, of. the present invention are to provide an improved stemming unit which avoids some of the above difficulties and limitations, and has peculiar advantages of its own such for instance as close stripping and a tendency to be selfguiding on the tobacco stem.
  • the invention contemplates the provision of flexible endless cutting or sawing members designed to hug and follow a stem surface.
  • the danger arises that the cutting surfaces pressed close to the stemnnay cut into or cross the stern and it is, therefore, 45 an important object of the invention to minlmize this possibility by rounding or bevelng the face or edge portion of the stemming' element adjacent the stem. surface.
  • This also has an advantage in that it ten-ds to guide the stem be- 50 tween the cutting or sawing elements despite crookedness of the stem and the lack of hand guiding. Indeed, it is contemplated that With the present invention the stem, once the butt end is passed between the stripping elements,
  • the present stemming unit lends itself to mechanical feeding and makes possible a decrease in the attention required by the operator. 6
  • the cutting element is not inten-ded to be rigid, l0*
  • Another object of the invention is to avoid in this type of stripper a shearing action and thus eliminate ledger plates and similar structure requiring a xed distance between the cuts on each side ofthe stem and detracting from its flexi 25 bility in fitting varying widths of stems.
  • Another object is to provide a novel method of stemming wherein the blade portions of the tobacco leaf are sawed apart from the stem. along the surface of the stem. 30u,
  • the invention is shown in combination with a booking drum, but it should ⁇ be understood that the stripping unit referred to is useable in a wide variety of machines and applications.
  • Fig. l is a front elevation, partly broken away, showing the improved stemming unit applied to a tobacco booking machine;
  • Fig. 2 is a side elevation of the machine illustrated in Fig. 1 on line 2-2 thereof; and 50" constructions selected to illustrate the invention are but certain of many possible embodiments of the same. The invention, therefore, is not to be restricted to the details illustrated and described, nor to the particular embodiments chosen as illustrative of the invention.
  • the stemming unit referred to is shown for purposes of illustration in combination with. a booking mechanism, the side frames III of which are held together by tie rods II and carry the ldrum shaft I2, drive shaft I3, roller shafts I4, I5, and I6;
  • shaft I6 which has a flanged roller 29 and is swingable by a handle 2
  • studs I1 On the studs I1 are swingable endbrackets 26 which are joined by the lead-in guide plate 21 and carry a shaft 28v which has rollers 29 for the lower loop-ends.
  • the brackets 26 are swingable by means of crank arms 30 connected by links 3
  • crank arms 30 connected by links 3
  • the booking belts 34 which surroundthe major' portion of the circumference of the drums 35 are looped around rollers 24 on shaft 23, runY over rollers 2U on shaft I6, over roller 36 on shaft I4', over flanged rollers 31 carried by arms 38 loose on shaft I 9, and over rollers 39 on shaft I5, and are nally'looped around rollers 29V on shaft 28. From thefhubs of arms 38 extend arms 40 on which are hung weights 4I which keep the belts 34 at a constant tension as the thickness Yof the leaf-books B on drum 35 increases during the operation of the machine. l
  • VTne'dmin 35 of the booking mechanism is ⁇ driven from shaft 28 by belts 34, the shaft 28 having a sprocket 42 driven by a chain 43 from a sprocket 44 on shaft YI3 on which is mounted a pulley 45 driven by'a belt 46.
  • the chain 43 runs over idlers 41 and 48, the latter Vof V,which isV carried by an arm 49 pivoted toY frame I8 and held in tension by a spring50to enable the chain to follow the movement of shaft 28 when the same is swung into the open position by turning handle 33.
  • the two halves of the booking drum- 35 are separated by flanges 5I between which the stems S of the leaves on the lead-in plate 21 are inserted by the operator.
  • a bracket 52 which carries pairs ⁇ of shafts 53 and 54 on which are mounted pulleys 55 and 56, respectively.
  • These pulleys vcarrying thetwo endless band-'saws'51 are drivenV in the Y direction of the' arrows by chains 58 running over sprockets 59 on shafts 6U driven by bevel gears 6I from the drum shaft I2 ofthe machine.
  • the band-saws 51 run over guide pulleys'BZ and 63, the ⁇ former of which is stationary while the'latter is mounted on a swingable arm 64 pivoted on bracket 52 and held by a spring 65.
  • the tension of spring holds the saws'51-in Acontact at the guide pulleys so that the saws are yieldingly pressed against the stem S' passing between them on plate 21 and thus closely follow:
  • the teeth of the band saws are set pointing or aring awayv from each other and the stems on their inner sides.
  • they may be fchamfered toa beveled or curved shape 'as shown at l51 in Fig; 3, thereby permitting the stem to enter smoothly between the saws bearing against it, and preventing the latter from cutting into the sides of the on-coming stemwhich'may, owing to the pressurer of spring 65, bulge beyond the contacting sides ofthe saws.
  • the inclination ofthe inner faces of the sawi ing instrument relative to .the stem .in a direction flaring away from the stem surface toward the cutting edge isy of importance because it enables the blades to hug the stem closely and thus obtain clean'stemming from butt to tip while minimizing danger of cutting across ⁇ the stem.
  • This -same feature makes possible pulling the stem through thestripping elements, with crooked stems .guiding themselves through said elements by contact with the inner surfaces of the element.
  • said endless members being arranged to co-V operate against opposite sides of a taperingstem progressively' from lbutt. to tip yfor severingfthe" laminae along their juncture with the stem, without-waste, actinggfor that purpose. as sensing means, ⁇ regardless normallyof;V the 'bodily dis- V placement ofthepressure element relatively to binationwith a pair @of .iiexible endless cutting members havingadjacentcutting edges arranged to receive the stem of al tobacco leafbetween them, means to support said cutting members ⁇ in position to-be brought together into contacting relation-at a stripping stationto cutthe laminae i from the stem, ⁇ mechanism for yieldingly pressing.
  • a tobacco stemming machine the combination with a pair of flexible endless saws havlng adjacent cutting edges arranged to receive the stem of a tobacco leaf between them to cut the laminae from the stern, the faces of said saws, nearest the stern, adjoining the cutting edge of the saw, being inclined backwardly and outwardly with respect to the direction of movement of the stem, to provide a tapered entrance for the stem and to avoid cutting into the same, a roller on which the entering stem is supported against the downward pressure of the saws as it passes therebetween, while free lateral flexure of the saws transversely to their broad faces is permitted, driving means for imparting cutting movement to said edges, and means behind said members for drawing the leaves butt rst through said members, whereby the trailing portion of the leaves will be left free in order that the same may be drawn through said members without guiding.
  • a tobacco stemming machine the combination with a, pair of flexible endless saws disposed with their broad faces side by side and having adjacent cutting edges arranged to receive the stem of a tobacco leaf between them; means to support said saws in position to be brought into a position in which said faces approach each other with an interval Yless than that of the thinnest stern part to be stripped, mechanism for pressing said members against the sides of a leaf stem inserted therebetween butt rst to cause said saws to snugly engage stems of varying dameter progressively along the entire length of the stems, with a pressure modulated exclusively in operation by the inherent flexibility and resilience of said saws, and driving means for imparting cutting movement to said edges, to cut the laminae from the stem.
  • a pair of nat iiexible band saws having their faces opposed and in position to engage a stem between them, said saws having arcuate cutting edges in continuance of said faces for cutting the laminae from a stem passing between said members, said adjacent arcuate cutting edges operating exclusively upon the portions of the laminae contiguous to the stem on each side, thereby to avoid cutting into the stem.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Basic Packing Technique (AREA)
US48353A 1935-11-05 1935-11-05 Tobacco stemming Expired - Lifetime US2165217A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US48353A US2165217A (en) 1935-11-05 1935-11-05 Tobacco stemming
GB2479/36A GB461523A (en) 1935-11-05 1936-01-27 Improvements in and relating to tobacco leaf stemming mechanisms
FR802080D FR802080A (fr) 1935-11-05 1936-01-29 Perfectionnements aux mécanismes à écôter les feuilles de tabac
DEI54199D DE673048C (de) 1935-11-05 1936-01-31 Tabakblattentstielvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48353A US2165217A (en) 1935-11-05 1935-11-05 Tobacco stemming

Publications (1)

Publication Number Publication Date
US2165217A true US2165217A (en) 1939-07-11

Family

ID=21954118

Family Applications (1)

Application Number Title Priority Date Filing Date
US48353A Expired - Lifetime US2165217A (en) 1935-11-05 1935-11-05 Tobacco stemming

Country Status (4)

Country Link
US (1) US2165217A (fr)
DE (1) DE673048C (fr)
FR (1) FR802080A (fr)
GB (1) GB461523A (fr)

Also Published As

Publication number Publication date
FR802080A (fr) 1936-08-26
GB461523A (en) 1937-02-18
DE673048C (de) 1939-03-15

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