US2195427A - Delivery for tobacco strippers - Google Patents

Delivery for tobacco strippers Download PDF

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Publication number
US2195427A
US2195427A US60808A US6080836A US2195427A US 2195427 A US2195427 A US 2195427A US 60808 A US60808 A US 60808A US 6080836 A US6080836 A US 6080836A US 2195427 A US2195427 A US 2195427A
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United States
Prior art keywords
leaves
leaf
stemmed
belts
shaft
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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
US60808A
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English (en)
Inventor
Rupert E Rundell
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
Priority to BE415095D priority Critical patent/BE415095A/xx
Application filed by International Cigar Machinery Co filed Critical International Cigar Machinery Co
Priority to US60808A priority patent/US2195427A/en
Application granted granted Critical
Publication of US2195427A publication Critical patent/US2195427A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A24B5/00—Stripping tobacco; Treatment of stems or ribs
    • A24B5/12—Auxiliary devices for stripping

Definitions

  • stemmed leaves are bacco stemming machines, more'particularly to the delivery. mechanism thereof, and-is in the nature of an improvement uponthe machine disclosed in Letters -Patent 2,019,721 to Nejedly, granted November 5, 1935. Its main object is to provide improved means for detecting and segregating unstemmed or insuillciently stemmed leaves.
  • stemmedl leaves, vespecially when used as 'cigar llers, should be devoid of any thick stem portions which may be left therein by the im-' proper operation ⁇ of the stemming mechanism. For example, a leaf may occasionally pass through the stemming machine without being properly caught by the stemming mechanism,
  • present invention provides for segregating 'the y unstemmed leaves and the imperfectly stemmed leaves positively from the pathin which they a detector of known construction actuated byl are normally advanced to the desired point of delivery.
  • the thin portion of the leaf, which is left in the leaf, is sometimes objectionableA because, when used as cigar ller it may press into or otherwise injure the cigar wrapper.
  • a greater portion of the stem may be left in the properly stemmed leaves, since the stem portionremaining there will likewise be crushed to proper size; and a greater weight or yield of stemmed leaves the stem near the tip of
  • a vsecond object of the invention therefore is to crush'the portion of the stem remaining in the leaves after stemming, and then split the same,
  • a further object of the invention is to compress the stri ⁇ p, to the end that any wrinkling or curling thereof may be removed.
  • Still another object is to prevent sticking of the strip to the conveyor belts after the suction has been cut off in the suction chamber under which the belts travel.
  • the mechanism provided in the'present invention for achieving the iirst object enumerated may consist of a roller suspended from one arm o f a bell-crank lever so as to ride on the leaf delivered by the stemming machine, the other arm carrying an electric contact-maker.
  • a pair of superimposed compressorrolls are provided, the upper of which is suspended from 'a pivoted horizontal arm made to oscillate in the vertical direction,
  • cutter mechanism is incorporated in Athe delivery mechanism, so timed as to descend upon the leaf during the passage of a given length of its tip.
  • the cutter is mounted on an oscillating arm and in its cutting position engages with Aa stationary anvil roller. 'At each side of the cutter an endless horizontal belt guides the leaf and prevents it from leaving the conveyor belt and sticking to the cutter.
  • the third object is achieved by providing a large drum and a series of additional endless belts, coacting with a series of conveyor belts for the good leaves, the halves of the split leaf passing around the drum between the respective conveyor and additional belts.
  • the fourth object there may be provided members disposed in recesses in the bottom of the suction chamber and actuated by the air-.expelling plate of the latter and movable between the conveyor belts to engage the adhering leaves and strip them from the belts.
  • Fig. 1 is Aa sectional side elevation of the delivery end of a stemming machine equipped with the various features of the present invention
  • Fig. 2 is an enlarged end elevation on line 2-2 of Fig. 1, showing the stem slitter in operating position:
  • Fig. 3 is an enlarged sectional end elevation on line 3 2 of Fig. 1, showing the construction of the delivery belt suction chamber and the combined pneumatic ejecting and leaf-depositing device;
  • Fig. 4 is a sectional side elevation of a suitable form of stemming mechanism with which the present invention may be combined;
  • Fig. 5 is'a front elevation of the same.
  • the tobacco leaves are stemmed and the remaining portion of their stems are crushed and then split to separate the two halves of the leaves.
  • Apparatus illustrative of one way in which the invention may be carried into effect may, as shown herein, comprise mechanism for stemming tobacco leaves, mechanism for advancing the stemmed leaves, a device for y detecting unare but certain of many possible concrete embodiments of the same. 'Ihe invention therefore is not to be restricted to the particular embodiments chosen as illustrative of the invention.
  • a tobacco leaf T may be manually or automatically inserted tip lfirst between the flaring lips- 2li) of the two halves .'of a suction chamber 2H having pipes 2I2 connected to a suitable source of nipped betweenl belts 2I3 driven by rolls 2
  • the outspread leaf is guided from the belts 2I3 by sets of belts 2I3a driven by rolls 2
  • a perforated sleeve 2II l0 rotating on an apertured cylindrical suction box 2I8 connected by branch pipe 2I9 to one of the pipes 2I2 leading to the source of suction.
  • This belt runs over 4suitable guide rollers 22
  • 20 Parallel with and in opposed relation to the sleeve 2I'I is a rotating cylinder 225 having a series of slotted circumferential anges 221.
  • a series of plungers (not shown) are mounted for movement vis desired to leave in the leaf.
  • That portion of the stem thicker than the distance be- 3.5. tween the sleeve and the cylinder will project into the spaces between the iianges and the inclined pins and be gripped.
  • serve to strip any diverging leaf or stem portions from the members 2I'Iv and 226, and the stripped stems pass into the chute 232.
  • 'I'he stemmed 45 leaves are thus delivered in outspread condition to the portion ofthe machine shown in Fig. 1, wherein the portion of the stems remaining in the leaves is crushed and slit to divide the leaves into halves, and unstemmed or improperly 50 stemmed leaves are segregated.
  • the leaf L discharged from the stemming mechanism of the machine is carried by the endless belt 5 to the feeler or detector roller 6.
  • the belt 5 is driven from a drum 55 l on a shaft 8 by a chain 9 trained over sprockets on the shaft 8 and the cam shaft I0 of the machine, and runs over guide rollers II and I2.
  • the roller 6 is suspended from a bell-crank I3 carrying an adjustable electric contact-maker I4' 60 opposite a contact Ila, which may be a grounded leaf spring and is pressed down against the passing leaf by a weak tension spring I5.
  • the contact-maker I 4 is normally out of engagement with the leaf spring Ha and is so adjusted that it 65 engages the leaf spring Ma and thus closes an electric circuit when the roller 6 is raised above a given height by the passing leaf.
  • a leaf with the thick part of its stem entirely removed will pass under the roller 6 without affecting the 70 electric contact, but'an unstemmed leaf or one not properly stemmed will close the circuit and thereby will energize a solenoid and effect the movement of its core in a direction which will set into operation mechanism, hereinafter described,
  • the leaf L passes over adrum I8 rotating on a shaft
  • the drum I8 intermittently engages an oppositely revolving drum I8 on a shaft I9 mounted in the free end of an arm 28, the arm 28 being oscillated on a shaft 2
  • the oscillations of arm 28 are so timed that the engagement of the drums I8 and
  • Scrapers 23 and wiping pads 24 are arranged to bear against each of the drums Il and I8 and keep its surface clean during the operation of the machine.
  • the pads 24 are made of felt or other suitable material and molstened with water from a reservoir 25 and are carried by and kept in wiping motion by. linkage (not shown) connected to a rocker arm actuated from cam shaft ⁇ l8..
  • a set of endless belts 48 arranged on each side of cutter 35 run over sets of rollers 4
  • 6 is driven by a chain 45 from shaft 8 of drum 1 and in turn drives shaft 3
  • the shaft 56 of the rollers55 is carried by arms 68 pivoted on brackets 6
  • arm 63 is connected by a link 64 with a cam lever 6,5 fulcrumed on a shaft 66 and having a follower 61 held down on a plate cam 68 on shaft
  • a gear 18 which drives a gear 1
  • a number of equi-distantly spaced pins 13 their number depending on the gear-ratio chosen, and from the hub of cam lever 86 extends an arm 14 having an arcu ate face conforming with the path of the pins 13.
  • a solenoid 16 On a pedestal 15 ,carrying shafts 66 and 12 is mounted a solenoid 16, the core 11 of which, by a link I18, ls connected with a bell-crank lever 18 having an arcuate pusher 88 arranged to engage the pins 13.
  • T'he solenoid 16 is connected to a source of A. C. electric current lines 8
  • the primary of the transformer 85 is connected to the lines 8
  • rollers 54 are raised by cam 68 into position 54 wherefore the belt 55 is normally maintained in its raised positionwhen a properly stemmed leaf isdischacrgedk frombelts 21 and theseparate halves L ofthe leaf are then deposited upon the perforated conveyor belts 5,3 which by rollers 89, 98
  • the outspread halves L of the leaf are retained on the belt 53 while being carried under the chamber 92, by the suction in the chamber applied through the perforations of the belts 53, into position over screens
  • the suction in chamber 92 is cut 'o by a valve
  • Fig. 3 which normally lie 'in recesses in the under side of the bottom of chamber 92 so that they do not interfere with the leaves carried by the beltsV 53.
  • 24 push the leaf L oilr the belts 53 and aided by the blast of ejected air, deposit it on the screen
  • ⁇ may be collected on an endless traveling surface such as a delivery belt or the like.
  • the leaves are preferably deposited in overlapping relationon the screens, the latter being 'suitably timed for that purpose with relation'to the mechanism for stemming the tobacco leaves and depositing them on the screens.
  • said leaf-advancing mechanism including an endless traveling conveyor belt arranged to receive and deliver the stemmed leaves at a predetermined point, and endless traveling members acting to transport the stemmed leaves under said device to said conveyor belt, and said means including an endless traveling delivery belt, a guide roller adjacent the point at which the stemmed leaves are delivered from said members to said belt, the delivery belt being looped over said guide roller, and means connected to said device for lowering said roller to bring the delivery belt into position to receive a faulty leaf detected by said device.
  • said members including a drum over which said conveyor belt is looped, around 'substantially a 'semi-circumference of the drum a compressor belt looped over said drum outside, and co-extensive in area with the aforesaid area of said conveyor belt, and rollers arranged to guide and keep said belts taut whereby a stemmed leal delivered between the same will be compressed and delivered in at condition, a device for advancing screens horizontally under said mechanism at the proper speed and in a direction such that the stemmed leaves will be delivered on the vscreens in sidewise overlapping relation, and
  • the combination i with means for forwarding stemmed leaves, of a device for detecting unstemmed leaves among the 4advancing, leaves, mechanism independent of said device for receiving the leaves directly from said leaf-forwarding means and delivering them' in a predetermined position, and instrumentalities controlled by said device for engaging and carrying and thereby removing the unstemmed leaves positively from the normal path in which the stemmed leaves are advanced by said mechanism, before. they reach said predetermined position.
  • a stemming machine In a stemming machine. the combination with mechanism for advancing leaves to a predetermined point, of means for stemming tobacco leaves and delivering them directly to said mechanism, 'a device for detecting unstemmed and insumciently stemmed leaves among the leaves advanced by said means, and positive means controlled by said device for engaging and carrying and thereby switching the unstemmed and insumciently stemmed leaves from the normal path in which the stemmed leaves are advanced directly to said point by said mechanism before they reach said mechanism, leaving the stemmed leaves under the iniluence and control ot said mechanism for such direct advancement tosaid predetermined point.
  • said belts having at least one straight conveying belt run at the entrance and exit sides of the looped portions for conveying said leaves into and out of operative relation to said drum and the portions of said belts coacting with said drum, at least one of saidbelts being provided with suction openings, a suction chamber on the one side of said belt on the delivery run thereof and means for periodically cutting off the suction to permit delivery of the flattened leaf from said belt.
  • a device detecting improperly stemmed leaves among the leaves advanced by said mechanism, an auxiliary conveyor and means controlled by said device for moving said auxiliary conveyor into position to intercept and divert improperly stemmed leaves from the properly stemmed ones before they reach said predetermined point.
  • a stemming machine the combination with a suction chamber havinga perforated bottom, of a series of perforated endless traveling belts disposed in spaced relation and having runs overlying said chamber, and other runs Aunderlying said perforated bottom, mechanism for stemming and splitting tobacco leaves and delivering the separated leaf-halves on said 'overlying runs, traveling members acting to retain the leaf-halves on said belts while they are advanced on to said perforated bottom, whereby the leaf-halves will be suctionally retained on said belts, and means for periodically cutting oi'f s the suction from said chamber to cause the leafhalves to be delivered therebelow at a desired point.
  • a stemming machine the combination with mechanism for stemming tobacco leaves, of means arranged to receive the leaves-and advance them in a path leading to a delivery static a device for advancing the leaves from said mechanism directly to said means and detecting unstemmed and Iinsufliciently stemmed leaves among said leaves, and a member controlled by said device for movement into a position wherein it positively engages and carries and directs unstemmed and insufliclently stemmed leaves away from said means and thereby effects segregation as between the same and the ⁇ properly stemmed leaves by diverting the unstemmed and insumciently stemmed leaves from said path before they reach said means.
  • the combination with mechanism for removing the major portion of the stem of a tobacco leaf, of a device for advancing the stemmed leaf tip foremost and crushing the remaining portion of the stem said device including a crushing roll and mechanism for intermittently moving said roll into engagement with the unstemmed tip portions only of successive leaves advanced by said device and thereby crushing the stem portions therein.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US60808A 1936-01-25 1936-01-25 Delivery for tobacco strippers Expired - Lifetime US2195427A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE415095D BE415095A (pt) 1936-01-25
US60808A US2195427A (en) 1936-01-25 1936-01-25 Delivery for tobacco strippers

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499347A (en) * 1945-04-16 1950-03-07 Mine And Smelter Supply Compan Electrical circuits for grinding mills
US2789704A (en) * 1953-10-05 1957-04-23 Lewin Henry Tobacco leaf stacker
US3024921A (en) * 1959-02-25 1962-03-13 Rene J Gaubert Stacking mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499347A (en) * 1945-04-16 1950-03-07 Mine And Smelter Supply Compan Electrical circuits for grinding mills
US2789704A (en) * 1953-10-05 1957-04-23 Lewin Henry Tobacco leaf stacker
US3024921A (en) * 1959-02-25 1962-03-13 Rene J Gaubert Stacking mechanism

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Publication number Publication date
BE415095A (pt)

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