US3703902A - Apparatus for making cigar bunches - Google Patents

Apparatus for making cigar bunches Download PDF

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Publication number
US3703902A
US3703902A US799790A US3703902DA US3703902A US 3703902 A US3703902 A US 3703902A US 799790 A US799790 A US 799790A US 3703902D A US3703902D A US 3703902DA US 3703902 A US3703902 A US 3703902A
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United States
Prior art keywords
tobacco
chamber
weight
charge
weighing
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Expired - Lifetime
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US799790A
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English (en)
Inventor
John Adolph Sargrove
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.)
IMP TOBACCO CO Ltd
IMPERIAL TOBACCO CO Ltd
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IMP TOBACCO 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
    • A24C1/00—Elements of cigar manufacture
    • A24C1/02—Tobacco-feeding devices with or without means for dividing the tobacco into measured quantities
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/91—Sensing or detecting malfunction in cigar or cigarette maker

Definitions

  • An apparatus for making cigar bunches including US. Cl A means preparing charges of filler tobacco 131/81 A, 177/123 fall short of the target weight, means for determining [51] Int-CI. ..A24c 01/02, G013 l3/O4 how short the charges are, and meansfor adding a FiQIdOISQNhW-Q-UI/ZI, 1A, number'of topping up units of tobacco of predeten: 131/22 A, 39,41,44; 177/ 122-, .123 mined size according to the amount by which the charge is short of the target weight.
  • apparatus for making cigar bunches comprising means for making charges of filler tobacco which fall short of the .target weight of the total filler, means for determining by how much the light weight charges fall short of the target weight, a supply'of topping up tobacco stored in units of predetermined size and means for adding to each light weight charge, a number of units of topping up tobacco .proportionalto the amount by which the charge is short of the target weight.
  • the apparatus preferably includes a balancing device set to balance at a predetermined weight which is below-said target weight, and indicator means for indicating the amount by which any given charge of tobacco departs from' said predetermined weight.
  • the indicator means provides an electrical signal indicative of the degree of imbalance of any charge, said signal being used to control the addition of said units of topping up tobacco to the filler.
  • a preferred embodiment includes means for volumetrically metering the filler tobacco before weighing it to provide said light-weight charges.
  • the means may comprise a chamber of variable volume, means being provided for altering the volume according to the degree of imbalance determined-from the sequential weighings of previous tobacco; charges.
  • Thedegree of imbalance is preferably determined from the cumulative results of a number of successive weighings.
  • apparatus for making cigar bunches comprising a tobacco magazine, a volumetric metering device, a weighing device and a bunch rolling apron all disposed in vertical alignment, and a control causing" metered volumes of tobacco from the magazine to fall into a weigh pan of the weighing device, and, after the degree of imbalance has been determined causing the metered and weighed charge to fall from the weigh pan onto the apron, means for adjusting the volume of the metering devicein accordance with the degree of imbalance of the weighing device and a topping-up device for adding to the charge a of tobacco on the apron an amount of tobacco determined by the degree of imbalance of said weighing
  • the invention is illustrated merely by way of example in the accompanying drawings in which:
  • FIG. 1 is a cross sectional view through apparatus according to the present invention being taken on the section line 1-] of FIG. 2,
  • FIG. 2 is a part cross sectional elevation of the apa, paratus shown in FIG. 1 taken on the line II--II of that FIG.
  • FIG. 3 is a schematic arrangement of some of the control circuitry of the apparatus
  • FIG. 4a is (i) a histogram and (ii) a graph'illustrating weights offiller tobacco charges made on a conventional (i.e. uncontrolled) bunch making machine,
  • FIG. 4b is (i) a histogram and (ii) a graph illustrating weights of fillertobacco charges made on the same conventional machine but modified by employing an improved cut off and volume metering device according to the present invention
  • FIG. 4b but further modified by including filler weighing and feedback to the volume control
  • FIG. 4d is (i) a histogram and (ii) a graph similar to FIG. 40 but further modified to include a fine tobacco additive device to top up light weight filler charges
  • FIG. 5 is an enlargedsectional view taken along lines I] of FIG. 2 and showing details of eccentric 24 on shaft 23. a I
  • a conventional cigar bunch making machine including a magazine 1 0substantially vertically disposed and in which a charge of tobacco 11 is maintained in a.compressed state by a weight 12 slidably mounted within the magazine 10. Also illustrated in FIG. I is the apron 13 of the bunch making machine together with part of the perforate table 14 on which cigar binder is disposed and over which the tiller deposited .upon apron 13 is rolled by movement of the apron actuating mechanism including roller 15.
  • the magazine 10 and associated equipment is normally disposed adjacent the apron 13 whereby tobacco issuing'from the lower end of the magazine 10 is deposited directly onto the apron 13.
  • the apron l3 apparatus indicated generally at 16, which is designed to meter the charges of tobacco employed in each bunch filler (a) volumetrically and (b) by weight.
  • the apparatus 16 comprises a housing 17 and two platens 19', 19 parallel one'to the other and spaced vertically apart; Housed within housing 17 adjacent the lower end of the magazine 10 is a cylindrical body 18' having formed therein a channel 20 which, in the relative position-of the components asillustrated in FIG. 1, is aligned with the lower end of the magazine 10 and receives tobacco therefrom. It will'be noted that channel 20 tapersv from each end towards the middle and that the lower face 9 of weight 12 is of V section. The efiect of these co-operating shapes is to distribute the tobacco towards the ends of the cigar bunches thus encouraging more dense ends.
  • the baseof the channel 20 is defined byfa tapered block 21 which is mounted for vertical movement within a slot 22 cut in the cylindrical body 18.
  • the body 18 and block 21 are mounted on a central shaft 23 provided with an eccentric 24 (see FIG. 5) such that rotation of the shaft 23 and corresponding rotation of the eccentric 24 will cause the block 21 to reciprocate vertically within the channel 22.
  • Such vertical movement of the block 21 will vary the depth of the channel 20 and thus its capacity.
  • the channel 20 has a maximum capacity of 5 cubic centimeters, a minimum capacity of 4 cubic centimeters wheel 32 itself rotated by an electric motor 33 via 3 gears.
  • the electric motor 33 is a constant speed motor adapted to be actuated for predetermined accurately timed intervals of 0.l seconds in a manner described below. Each rotation of 0.1 seconds results in a variation in the capacity of channel 20 of 0.1 cubic centimeters.
  • pinion 35 Connected to the opposed end of shaft 23 is a pinion 35 which co-operates with a reciprocal rack 36 operated by an air cylinder 37 mounted on plate 19'. Actuation of cylinder 37 will cause rotation of the cylindrical body 18.
  • the cylinder 18 is adapted to rotate in an anti-clockwise direction. Reversal of the illustrated direction of motion of rack 36 causes the cylinder 18 to rotate in a clockwise direction.
  • the following or rearward side wall of channel 20 is provided by an hardened insert 40 of helical formation.
  • the insert 40 is spaced from the opposed wide wall of channel 20 as illustrated in FIG. 1 but the spacing varies, being a maximum at the right hand end of body 18 (as viewed in FIG. 2) and decreasing along the length of .the cylindrical body 18 towards the pinion 35.
  • the edge of insert 40 is disposed along a helical path.
  • the opposed wall member of magazine 10indicated in FIG. 1 at 41 also has at its lowermost end an hardened but linear shear edge.
  • This hardened linear shear edge co-operates with the hardened helical shear edge of insert 40 to provide a shearing action during relative rotation between cylinder 18 and the magazine 10. This shear actionseparates the tobacco within channel 20 from the tobacco within the magazine 10.
  • a semi-cylindrical weigh-pan 50 housed within housing 17 is a semi-cylindrical weigh-pan 50.
  • the weigh-pan 50 is provided with circular end discs 51, 52 and is pivotally supported at one end of a pair of parallel balance arms 53.
  • the balance arms are pivotally mounted to support posts 38 by pairs of crossed linear leaf springs 39 mounted between the posts 38 and a cross beam 56.
  • a clamp 60 is provided I for clamping the arms 53 when the weigh pan is not in use.
  • Mounted on the end of one of the arms 53 is a mask 54 in the shape of a cross and disposed to each side of the mask 54 are three slits 550, b, and c and 56a,
  • weigh pan 50 is vertically below the cylindrical body 18. Upon rotation of the body 18 through substantially 180 the charge of tobacco from within channel 20 will fall by gravity into the pan 50. Upon releasing clamp 60 for a fraction of a second the tobacco within the pan canbe weighed in that, using mask 54 and the associated photo-electric devices, it can be determined whether the weight of tobacco is heavier or lighter than a preset value.
  • vanes mounted on one end of the weigh pan 50 are vanes mounted in the path of air jets ,59 and 61. After weighing the tobacco within weigh pan 50 an air blast through the jet 61 forces vane 60 to rotate the weigh pan 50 anticlockwise (as viewed in FIG. 1 The weigh pan is adapted to spin through substantially 180 until the edge 62 of the pan collides with a stop 63 on housing 17 at which stage the tobacco within the weigh pan will fall by gravity out of the pan. A blast through air jet 59 then returns the pan to its rest position as indicated in FIG. 1. i
  • Tobacco falling from weigh pan 50 will fall by gravity onto the apron 13.
  • To prevent the tobacco from being spread unduly during this fall it is channelled in its fall by channelling comprising a face plate 71 and two side plates 72, 73.
  • the fourth wall of the channelling is provided by a plate 74 mounted for movement relative to plates 71, 72, 73 between the position illustratedin full lines in FIG. 1 at 74 and that illustrated by broken lines at 74'.
  • the plate 74 is connected by a rod 75 to an air cylinder 76 adapted to move it between its extreme positions.
  • Each of the plates 71 to 74 terminates adjacent the upper surface of apron l3. Projecting upwardly through the apron on either side of the channelling 70 are two plates 6, 7 which hold the tobacco filler on the apron when the channelling 70 is lifted immediately before the bunch rolling operation. Plates 4, 5, attached to plates 72, 73, ensure that the apron fits over the plates 6, 7, after the bunch rolling operations.
  • the apparatus so far described is adapted to deposit sufficient tobacco upon the apron 13 to produce a lightweight filler i.e. the target weight of the tobacco tipped from pan 50 is, say, 1.7 gms when a total filler weight of 1.9 gms is desired.
  • the difference of 0.2 gms is arranged to be dispensed from a carefully controlled fines dispenser 79.
  • the dispenser 79 comprises a hopper 81 from which fine tobacco drops into a chamber 82 the lower exit from which is obturated by a rotary bucket wheel 83 in the form of a cylinder having twelve elongate channels or buckets cut in itsperiphery. Each bucket is designed to hold 0.070 gms of fine tobacco.
  • the wheel 83 is driven anticlockwise (as .viewed in FIG. 1) by a stepping motor 84. Each stepwise movement of the motor 84 is adapted to move the wheel 83 by the angular equivalent of one bucket.
  • Each bucket is filled with tobacco at its uppermost position, in passing through chamber 82, and the tobacco falls from each bucket as that bucket leaves an obturating plate 85.
  • the tobacco falls down chutes 86 and 87 and through an aperture 88 in wall 71 to mix with the tobacco upon the apron 13.
  • the chute 87 is shown in broken line to illustrate the spreader plates divergent form intended to spread the fine tobacco across the full width of the channelling 70. Since each bucket holds 0.070
  • control signal in line 92 indicates a trend of heavy'weighings the size of channel 20 will be reduced and if the control signal indicates a trend of light'weighings the size of channel 20 will be increased.
  • the volume of tobacco received in channel 20 will be adjusted such that the weight of tobacco received. in the pan 50 will be mainurge it vertically downwardly through themagazine to itslowermost end. Withcylinder 18 in the position illustrated in FIG. 1 the tobacco urged downwardly through the magazine will enter the channel.2 and become compressed therein due to the weight 12.
  • a control signal passed to air cylinder 37 will reciprocate rack 36 to.
  • the clamp 60' is released to determine whether'the charge of tobacco received within the pan 50 is above or below a preset value of, say, 1.7 gms at which the arms 53 would balance. Movement of the mask 54 over one,
  • two or even three photo-cell slits 55a, b or c or 561;, b or c, will indicate the degree of imbalance of the charge of tobacco within the pan 50.
  • Electrical control apparatus including holding circuits 90 is arranged to receive signals from the photo-cells associated with each of the six slits adjacent mask 54 whereby as each slit becomes masked and thus light to the photo-cells is obscured, a signal from the associated photo-cell will pass to the holding circuits 90.
  • An algebraic summing circuit 9] adds algebraically the signals from the holding circuits 90.
  • the signals from photo-cells 55a, 55b and 550 can be equivalent to plus one unit," plus two units and plus three units respectively.
  • the signals from photo-cells 56a, 56b and 560 can. be equivalent to minus one unit, minustwo units and minus three units respectively.
  • the algebraic summing circuit is arranged to provide a control signal in line 92 when, for example, the algebraic sum of the signals from the photocells reaches a predetermined value e.g. five units.
  • a predetermined value e.g. five units.
  • a control signal will be created in line 92.
  • the signal in line 92 is used to control operation of electric motor 33 via a motor circuit which is set such that for each control signal received the constant speedmotor 33 is operated for a predetermined time of 0.1 seconds.
  • Themotor 33 will thus rotate shaft 23 by a predetermined amount for each control signal received, i.e. adjusting the volume of channel 20 by 0.1 cubic centimeters for each signal tained at substantially the value at which the weighing pan mechanism has been preset e.g. l.7 gms.
  • Adjustments are provided in the control circuitry whereby the degree of rotationof motor 33 for each control signal is readily variable. "lhisadjustment ensures that the same apparatus can be used for cigars havingtotally difierent target weights, where the degree of control is thus quite different from that discussedhere;v I a
  • an air blast through jet 61 will, rotate the; pan thus tipping the tobacco onto apron 13.
  • Impact between the edge 62 of pan 50 and stop:63 will ,jarthe pan to dislodge any tobacco remaining in the pan after rotation.
  • the pan will be cleared after each weighing.
  • the clamp has of course been reapplied and upon return of the pan 50 to its reset position the is ready to receive the next charge of tobacco from cylinder 18.
  • the individual signals fromthe holding circuits pass to a set of digital command circuits which control the operation of stepping motor 84 by passing control signals to a binary counter through a decoder 97.
  • the motor 84 is actuated stepwise by signals received from an oscillator 101 under the control of counter 100.
  • a stop signal for stopping the motor is passed tothe oscillator 10] from decoder 97 through a line 105.
  • a switch 106 in line is provided with a cam follower which co-operates with cups in the periphery of a cam wheel 107 attached to-the shaft on gaged in a cup on wheel 107 (i.e. when a bucket on wheel 83 has just passed obturator 85 and has been emptied.
  • the motor 84 will never stop the wheel 83 between bucket loads.
  • each bucket contains 0.070 gms of tobacco, a total of 0.21 gms will be dispensed through chute 87 to mix with the 1.7 gms of filler already present on apron 13, thus providing a total filler weight of 1.91 grns, being the closestapproximation possible to the desired 1.90 grns.
  • the digital command circuit 95 will command rotation of motor 84 to the equivalent of one bucket only (+l in circuit 95) thereby to dispense 0.070 gms of fines onto apron 13. If the filler is 3 units underweight, the
  • the manner in which the tobacco filler for cigar bunches is prepared in discrete charges is improved considerably by (a) having improved cut-off arrangement by which the tobacco is removed from the magazine in discrete quantities (b) a more accurate volumetricmetering of the tobacco by employing the close tolerance channel 20 which is effectively closed once it leaves its alignment with the lower end of the magazine 10 (c) metering of the charge by weightthrough the weigh pan 50 and associated equipment (d) very close supervision of weight of the charge for each filler using a topping-up method of fines by e.g. equipment 29 through shute 87.
  • FIG. 4 An indicationof the way in which these features improve the weight distribution of cigar bunches is provided by FIG. 4.
  • the histograms and graphs (a illustrate the weight distribution for uncontrolled i.e. conventional cigar bunch machine without the new equipment described above
  • (b) illustrates the histogram and graph for weight distribution employing only the cylinder 18 i.e. the improved cut off arrangement using shear elements 40 and 42 and the more closely controlled volumetric metering of channel 20. It will be seen from comparing (a) with (b) that the weight distribution has been improved and the trend indicated by FIG. 4a has been reduced and thus the trend of the weight variations has been improved.
  • the diagrams (c) indicate the weight distribution employing the cylinder 18 and the weigh pan 50 with its corresponding feed back controlling the volume of channel 20. It will be seen from this that a considerable improvement has been achieved. The trend has been virtually eliminated and the only substantial variation now present is the variation between the weights of individual cigar bunches. The "trend" quite apparent in FIGS. (a) and (b) has been virtually removed. Referring now to the diagrams (d) this indicates weight distribution using the whole of the apparatus described i.e. cylinder 18 for volumetric metering, weigh pan 50 for weight control and the fines equipment 79 which employs the fines added through shute 87. It will be seen from this that the discrepancy in the weights of successive cigar bunches has been brought under control and is not excessive.
  • histogram (a) is histogram (a) from which it will be seen that the shaded area P indicates the amount of ingredient i.e. tobacco filler saved on the batch of cigars measured (in this particular case a batch of two hundred cigar bunches). Area Q indicates the light rejects and area R the heavy rejects.
  • an electrical signal indicative of the weight of individual cigar bunches can be used to trigger an accept or reject mechanism for heavy and light bunches.
  • This will be used to reduce the spread of the histogram by the areas Q and R as indicated in the histogram 4(d). It will be particularly noted by comparison of histograms of the uncontrolled and the fully controlled bunches that the mean weight has been reduced Considerably by an amount S the spread has been considerably reduced from T to t and thus a considerable saving in material employed in bunches is achieved as well as more consistent bunches.
  • weight and face 9 and channel could be plane rather than V shaped, there need be onlyone air puff pipe 61, the pan 50 returning to its rest position without the need for pipe 59. There could be more or less buchets on wheel 83.
  • weighing apparatus for weighing the filler tobacco from the variable volume chamber
  • control device for varying the volume of the chamber, the control device comprising,
  • Apparatus for making cigar bunches with a predetermined target weight of filler tobacco comprismg:
  • variable volume chamber fonned in the periphery of the cylinder providing an extension to the lower end of the magazine, the volume of the chamber being such that the weight of tobacco thereinvis not more than the target weight;
  • j. means for varying the volume of the chamber in accordance with control signals determined by the difference in weight between the weight of the charge of filler tobacco and the predetermined tar-. get weight.
  • variable volume chamber is a channel tapering from each of its ends towards its middle.
  • said chamber volume varying means comprises a. a movable chamber base, being movable in a direction perpendicular to the axis of rotation of the rotatable cylinder;

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US799790A 1968-03-06 1969-02-17 Apparatus for making cigar bunches Expired - Lifetime US3703902A (en)

Applications Claiming Priority (1)

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GB00772/68A GB1253531A (en) 1968-03-06 1968-03-06 Cigar bunches

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US3703902A true US3703902A (en) 1972-11-28

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US (1) US3703902A (xx)
CH (1) CH508356A (xx)
DE (1) DE1909296A1 (xx)
GB (1) GB1253531A (xx)
IE (1) IE32949B1 (xx)
NL (1) NL6903453A (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111212A (en) * 1972-08-09 1978-09-05 Douwe Egberts Tabaksmaatschappij B.V. Dosing and weighing of cut tobacco
US4275775A (en) * 1978-05-12 1981-06-30 Sig Schweizerische Industrie-Gesellschaft System for the accurate dosing of bulk material
ITBO20110392A1 (it) * 2011-07-01 2013-01-02 Manifatture Sigaro Toscano S P A Metodo e macchina per la produzione di sigari
ITBO20110391A1 (it) * 2011-07-01 2013-01-02 Manifatture Sigaro Toscano S P A Metodo e macchina per la produzione di sigari
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US357734A (en) * 1887-02-15 Feed-regulating device for cigar-machines
US1559009A (en) * 1922-03-08 1925-10-27 Schussler Tobacco Machine Co I Automatic cigar-bunching machine
US1563756A (en) * 1922-03-29 1925-12-01 Liberman Bernard Cigar bunching
US2007306A (en) * 1930-08-19 1935-07-09 Peuker Franz Weighing scale
US2090252A (en) * 1930-06-18 1937-08-17 Paula Damm Automatic tobacco weigher
US2290896A (en) * 1938-10-29 1942-07-28 American Mach & Foundry Dense end mechanism for cigarette machines
US2324667A (en) * 1940-05-07 1943-07-20 Baker Barton Dell Dividing and weighing of bread dough and like plastic masses
US2482465A (en) * 1943-12-10 1949-09-20 Int Cigar Mach Co Control for cigar machine short filler tobacco feeds
US3113576A (en) * 1957-02-05 1963-12-10 American Mach & Foundry Cigarette making machine
US3209844A (en) * 1962-12-03 1965-10-05 Hesser Ag Maschf Apparatus for weighing out flowable materials

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US357734A (en) * 1887-02-15 Feed-regulating device for cigar-machines
US1559009A (en) * 1922-03-08 1925-10-27 Schussler Tobacco Machine Co I Automatic cigar-bunching machine
US1563756A (en) * 1922-03-29 1925-12-01 Liberman Bernard Cigar bunching
US2090252A (en) * 1930-06-18 1937-08-17 Paula Damm Automatic tobacco weigher
US2007306A (en) * 1930-08-19 1935-07-09 Peuker Franz Weighing scale
US2290896A (en) * 1938-10-29 1942-07-28 American Mach & Foundry Dense end mechanism for cigarette machines
US2324667A (en) * 1940-05-07 1943-07-20 Baker Barton Dell Dividing and weighing of bread dough and like plastic masses
US2482465A (en) * 1943-12-10 1949-09-20 Int Cigar Mach Co Control for cigar machine short filler tobacco feeds
US3113576A (en) * 1957-02-05 1963-12-10 American Mach & Foundry Cigarette making machine
US3209844A (en) * 1962-12-03 1965-10-05 Hesser Ag Maschf Apparatus for weighing out flowable materials

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111212A (en) * 1972-08-09 1978-09-05 Douwe Egberts Tabaksmaatschappij B.V. Dosing and weighing of cut tobacco
US4275775A (en) * 1978-05-12 1981-06-30 Sig Schweizerische Industrie-Gesellschaft System for the accurate dosing of bulk material
ITBO20110392A1 (it) * 2011-07-01 2013-01-02 Manifatture Sigaro Toscano S P A Metodo e macchina per la produzione di sigari
ITBO20110391A1 (it) * 2011-07-01 2013-01-02 Manifatture Sigaro Toscano S P A Metodo e macchina per la produzione di sigari
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD805687S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device tank
USD805686S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device
US10278428B2 (en) 2014-10-02 2019-05-07 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US10299513B2 (en) 2014-10-02 2019-05-28 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD857985S1 (en) 2014-10-02 2019-08-27 Digirettes, Inc. Vaping device
USD863676S1 (en) 2014-10-02 2019-10-15 Digirettes, Inc. Vaping device tank

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Publication number Publication date
CH508356A (de) 1971-06-15
GB1253531A (en) 1971-11-17
IE32949L (en) 1969-09-06
IE32949B1 (en) 1974-01-23
NL6903453A (xx) 1969-09-09
DE1909296A1 (de) 1970-08-27

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