US933724A - Machine for making paper tubes. - Google Patents

Description

S. I. PRESGGTT.

MACHINE FOR MAKING PAPEn TUBES.

APPLICATION FILED 11160.22, 1905.

2 sums-sum 1 X lNiiNTOR Patented Sept. 7, 1909.

. the seam. In

UNITED STATES PATENT OFFICE.

SYDNEY I. PRESCOTT, OE'NEw YORK, N. Y., ASSIGNOR TO THE- AMERICAN TOBACCO COMPANY, OF NEW YORK, N. Y., A 'CORBORATION OF NEW JERSEY.

MACHINE FOR MAKING PAPER TUBES.

Specification of Letters Patent.

Patented Sept. 7, 1909.

Original application filed November 12, 1904, Serial No. 232,480. Divided and this application filed December 22, r905. Serial No. 292,900.

To all whom it may concern:

Be-it known that I, SYDNEY I. PRESCOTT, a citizen of the United States, residing at New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Machines forMa-king Paper Tubes, fully described and represented in the following specification and the accompanying drawings, forming a part of the same. I k

This invention relates to certain improvements in machinesfor making paper tubes. Specifically considered, the invention has in viewthe improvement of that class of together by the action of seaming devices which act to lock the edges of the tube by crimping, the tube being thus formed without the use of paste. In these machines as heretofore constructed, the'strip of paper is first acted upon by a paper forming device which turns the paper up into either a cylindrical or a-trough like form, and the paper then passes along a guide, the walls of which are cylindrical in form. After the paper has been converted into true cylindrical form, the devices by which the seam is formed act t e operation of these machines, however, it has been found diflicult .to cause the thin paper to travel truly through the cylindrical guide, the edges of the paperbeing apt to shift as the paper.

passes from tapering into cylindrical form, so that the edges do not come together truly. It is, of course, desirable in machines of this type to have the tube making devices of such a character that the tube will be continuously formed, as this obviates the necessity of an intermittent paper feed and increases the capacity of the machine. The machines heretofore constructed, in which the tube making devices operated continuously, operated to sever the tubes into lengths before the mouth-pieces were inserted therein, so that they required a special mechanism for handling these severed tube lengths, which which the to overlap theed es of the paper and to lock mechanism had to be carefully constructed on account of the delicacy and fragile character of the tubes.

' One of the objects of this invention is to produce a machine for making tubes in paper is required to travel in cylindrical preliminary forming devices operate uponit and the seam forming devices operate.

A further object of the invention is to produce a machine for making cigarette shells which shall employ a continuously operating tube forming mechanism and in between the time when thewhich the mouth-pieces shall be inserted in the tube sections before these sections are severed from the tube as it issues from the continuously operating tube forming mechanand in certain parts, improvements andcombinations as will be hereinafter fully described and then specifically pointed out.

Referring to the drawings -Figure 1 illustrates in plan view, and partly in section, so much of an apparatus for making tubes and inserting mouthie'ces therein as will enable the invention to lie understood. Fig. 2 is a side elevation, partly in section, of the construction. illustrated in Fig. 1, certain parts of the construction shown in Fig. 1 being, however, omitted. Fig. 3 is an end .view of the machine illustrated in Fig. 1 illustrating more particularly the driving mechanism. Fi 4 is a section on the line 47-4 of Fig. 3. ig. 5 is a plan view of the means employed for forming the strip into tubular form and the seaming devices. Fig. 6 is a vertical section of the construction shown in Fig. 5. Fig. 7 is an end view of the construction shown in Fig. 6. Fig. 8 is a detail section on theline 88 of Fig. 6, certain arts being omitted. Fig. 9 is an end view ooking in the direction opposite to that in: which Fig. 7 is taken, the forming mandrel being shown section. Figs. 10, 11, 12, 13, 14 and 15 are diagrammatic views illustrating the operations plerformed in forming the tu e and seaming t e same. 7

The mechanism which has been selected to illustrate the invention embodies the tube forming and the mouth-piece making and inserting mechanism of an organized ma- .chine for forming mouth-piece cigarettes,

this machine being shown in its entirety in an application filed November 12 1904, Ser. No. 232,480, for improvements n c garette machines, of which this applicatlon 1s a division.

Machines embodying the invent-ion will be provided with a source of paper supply, which will usually be a sultably mounted reel by which the paper is delivered to the tube making mechanism. As the construction and mode of mounting the paper supplying devices are not material to the present invention, they are not lllustrated. The paper supplying devices will deliver the paper to the tube forming mechanism whlch may be widely varied in its construction. As

shown, there is provided a carrier block 98 (see Figs. 5,6 and 7) this carrier block serving to support a mandrel 99 around Wh1ch the strip of paper is folded. A guide 1s provided to cooperate with the-mandrel 1n forming the strip or web of paper into-tubular shape. While the construction of th 1s guide may be varied, in the best constructions, the guide will be generally tubular in form, as indicated at 100 in Fig. 7 The gulde, 1n the preferred construction, will be internally tapered, so as to progressively effect the shaping of the strip.

In order that the strip may retain its tubular form, it is, of course, necessary that the edges be secured together. While this may be efiected in any desired way, in the best constructions, the securin of the edges of the strip will be efiecte them to form a seam, thus avoiding the use of paste. The means by which the edges of the strip are interlocked may be varied. In

the best constructions, however, the mandrel willbe provided with a seaming rib, marked 101 (see Figs. 8 and 9), and the interior of the guide with a cooperating seaming rib 102. For convenience 1n construction and to enable the parts to be readily gotten at, the guide will be made in two parts, one of the parts, marked 103, carrying the seaming rib. 1: will be observed that the interior surface of the part 103 of the guide is curved and tapered so that when it is in position, the curve and taper correspond with the curve and taper of the bore of the remainder of the 1de. The part 103' is secured to the carrier 98 by screws 104:, or in .any other suitable manner. The uide is slid into an opening in the carrier b ock which it fits snugly. As in the construction shown, the mandrel may be supported by the carrier block, and the support may be of any suitable char- ,acter. In the best constructions, however,

the supporting device will be of sucha character that the mandrel and its seaming rib will be properly centered in the guide by the act of inserting the mandrel. In the construction shown, the mandrel is provided with a circular supporting block 105, said by interlocking block fitting in a recess in the carrier block 98, and being connected with the mandrel by a web 106. The guide is slotted, as indicated at 107 (see Figs. 6 and 7), the web 106 passing through the slot. It isapparent that if the slot 107 in'the guide be properly located with respect to the seaming rib 102,

the act of slipping the mandrel into position will not only properly center it, but at the same time, it will bring the seaming rib 101 into proper relation with its cooperating rib;

of the guide the paper is under the control ofthe mandrel and guide not only during the shaping, but also during the folding operation by which the seam is formed, the seaming and shaping progressing simultaneously. This will be apparentfrom an inspection of the diagrams, Figs. 10 to 15' inclusive,

which show the formation. of the tube and seam atsuccessive steps in the operation. Fig. 10 shows the paper after it has begun to assume its tubular form; in Fig. 11, the edges of the paper have been caused to approach nearer toeach other, and in Fi 12, the edges have been slightly overlappe and the bending of the edges by which the interlock-ing seam is to be formed has been begun.

An inspection of. Fig. 13 shows" that the diameter of the tube has been reduced by a still further overlapping of the edges of the paper, and at the same time the bend in each edge of the paper has been increased. In Fig. 14, the overlapping of'theedges has been increased and at the same time the bends in the edgesof the. paper have been still further interlocked. Fig. 15 shows the tube well shaped up and the edges interlocked so that it is ready for the actionfit the pressing device which' is employed "to flatten down the interlocked parts of the paper. spection of these diagrams that the paper in its travel through the various agencies so far described has not been caused to change from what may be termed a taper into what may be termed a cylindrical form. The interiqr of the guide is cone shaped and the taper corresponds in shape thereto. In other words, a short length of tube anywhere along the length of the guide will correspond in shape to the frustum of a cone and not to a cylinder. The seam-formin devices are not, therefore, acting on a formed circular tube which has had the material for forming the seam previously brought into position, but the material for forming the seam is supplied to the seam forming devices from the frame. llerably be a driven wheel.

short shaft 111 supported in a bearing car-.

ried on a bracket 112 extending upward The wheel 110 will pref- The driving of this wheel maybe efi'ectedin any desired manner. As shown, the shaft 111 is provided with a spiral gear 113 which meshes with a spiral gear 114 mounted on ashaft 115, one end of which is supported m a bearing in the bracket 112 and the other end of which is supported in a standard or bracket 116 rising from the frame. This shaft 115 is provided with a gear 117 meshmg w1th a gear 118 on a way shaft 119 which is themain shaft of the tube forming mechanism. The driving of the way shaft 119 may be effected in any desired manner. As shown in the drawings, the shaft 119 is'provided with a bevel gear 121 which meshes with abevel gear 122 on a shaft 123 supported in standards 124 which rise from the bed of the machine. The shaft 123 (see Figs. 1 and 3) is provided with a gear 126 which is driven by means of idle gears 127 from a gear 128 mounted on a shaft 129, this shaft being journaled in a hanger 130 and in one of the legs of the machine. The shaft 129 is provided with fast and loose pulleys 131, 132 which will be belted to a suitable source of power.

The tube forming mechanism which has been previously described operates, it will be understood, to form continuous tubes, these tubes being cut into lengths, and, m

the particular machine selected to illustrate the invention, the lengths have mouth-pieces inserted therein; While the mouth-piece forming and inserting mechanism may be of any suitable character and may be arranged to operate at any desired time, in the construction shown, the insertion 'of the mouth-piece is begun-before the tube length is severed The mouth-piece inserting mechanism illustrated in connection with'the machine embodies a coiling spindle 147 (see Fig. 1),

The coiling spindle 147 is provided with a nick or slot in its side into which the edge of the mouth-piece blank cut from a strip of The winding spindle is driven from a short shaft 149 carrying a gear 150 which is driven through a proper train of gearing from the way-shaft 119 (see Fig. 1). The stopping and starting of the winding spindle are controlled by a clutch mechanism, marked 151. The construction of the driving mechanism, the clutch mechanism and the winding spindle is substantially the same as that doscribed in the Patent No. 721,087, dated Feb.

17, 1903, granted to The American Tobacco Company as the assignee of S. D. and S. S. D. Rakowitzky. Specific descrlption, therefore, of this part of the mechanism is not necessary, reference being made to the above patent therefor.

The transferring tube 148 is driven from a slide 152, this slide being connected by a link 153 (see -Figs. 2 and 4) to a lever 154 which is operated by an eccentric and strap 155 mounted on the shaft 129. Attention is called to the fact that while the construction of the mouth-piece coiling mechanism, the

to illustrate the invention, the mouth-piece winding and transferring mechanism is arranged in line with the continuously advanclng tube which is being delivered by the 'forming devices. The result of this construction is that it isipossible to begin' the.

introduction of the mouth-{piece into the 'tube'lengthbefore it is cut 0 After the mouth-piece has entered the.

tube, the tube length is cut off by any suitable movable or traveling mechanism, as, for instance, by shears 156, these shears being carried on asliding rod 157 which has a camlug 158 secured thereto, this lug working in a cam 159 secured to the shaft115 before referred to. This construction gives the -cutters a traveling movement with the cigarette .tube while cutting, as is common in machines of this general type.

After th, 'cigarette tube length has been out oh and as the mouth-piece and tube are retreating, the tube at this time being over the mouth-piece transferring tube 148, the insertion o the mouth-piece is completed and the mouth iece and tube are stripped from thetrans erring tube by means of a dog'160. The assembled tube and mouthpiece forming the completed wrapper may be delivered onto a table 161 from which they pass under a re-rolling roll 162. .The construction and operation of this roll'may be substantially the same as the similar rerolling roll described in said Rakowitzky patent.

Changes and variations may be made in the mechanism by which this invention is carried .into effect. The invention is not, therefore, to be limited to the specific construction hereinbefore described and illustrated in the accompanying drawings.

the forming mechanism, a travelin mouth-piece inserting tube, means for reciprocating the mouth-piece inserting tube substantially in line with the tube issuing from the forming mechanism, and a traveling cut-' ting mechanism located between the tube forming mechanism and the mouth-piece inserting tube.

3.. The combination with a continuously operating tube forming mechanism, of a mouth-piece inserting tube, means for reciprocating the mouth-piece inserting tube substantially in line with the tube issuing from cutting mechanism located between the tu e forming mechanism and the mouth-piece inserting tube, and means for operating the cutting mechanism while the mouthpiece inserting tube is in the cigarette tube.

- 4. In a tube forming mechanism, the combination with a mandrel, of a guide surrounding the same and operating in connection therewith to convert a strip of paper into tubular form, and a bending device located inside. the guide.

5. In a tube forming mechanism, the combination with a mandrel, of a tubular guide surrounding the same and operating in connection therewith to form a strip of paper into a tube, a seaming rib for operating on one edge of the paper carried by the mandrel, and a coiiperating seamin rib for the other edge of the paper carried y the guide.

.6. In a tube forming mechanism, the combination with a mandrel, of a tubular guide surroundin' the same, a block havin a curved surace forming a part of the gulde, a seaming rib on said curved surface, and a coiiperating seaming rib on the mandrel.

7., In a tube forming mechanism, the combination with a tubular guide provided with one part of a seam forming device, of a mandrel lying in the guide and provided with st m the other part of the seam forming device, and means brought into" action by the act of inserting the mandrel in the guide for bringthe seam forming device into proper relation with each other.

9. In a tube forming mechanism, the combination with a recessed carrier block, of a slotted guide mounted therein, said guide carrying one part of a seam forming device, a mandrel lying in the guide and carrying the other part of the seam forming device, a positioning projection carried by the mandrel and cooperating with the recessed block and guide whereby the act of inserting the mandrel in the tube brings the parts of the" seam forming'device into proper relation with each other, and locking mechanism.

10. In a tube forming mechanism, the combination with a recessed carrier block, of a slotted tubular guide provided with a seaming rib, a mandrel provided with a seaming rib, said mandrel having'a positioning projection cooperating with the slot in the guide and the recess in the carrier block, and lockin devices.

11. n a tube forming mechanism, the combination with a tubular guide, one part of which is formed by a removable block hav-' ing a seaming rib, of a mandrel having a cooperating seamin rib, and meansfor sustaining the mandreI in the guide.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

SYDNEY I. PRESCOTT.

Witnesses:

A. WHITE, PHILIP N. TILDEN.

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