US2063392A - Package machine - Google Patents

Description

9 Sheets-Sheet l Dec. 8, 1936. w. w. MccAlN PACKAGE MACHINE Filed Jan, 25, 1935 mmm Mg 6% I www 1 vmm Dec. 8, 1936. w. w. MccAlN PACKAGE MACHINE 9 Sheets-Sheet 2 .www MBH Filed Jan. 25, 1933 Dec. 8, 1936. w. w. MCcAlN 2,063,392

PACKAGE MACHINE Filed Jan. 23, 1935 9 Sheets-Sheet 5 Dec. 8, 1936. w. w. MCCAIN PACKAGE MACHINE Filed Jan. 25, i933 9 Sheets-Sheet 4 Dec. 8, 1936. w w MCCAlN 2,063,392

PACKAGE MACHINE Filed Jan. 25, 1935 9 Sheets-Sheet 5 Dec. 8, 1936. w. w. MCCAIN PACKAGE MACHINE Filed Ja'n. 23, 1955 9 sheets-sheet e We W @yC/mwa, zj-Mw Dec. 8, r1936. w, w. McfcAlN PACKAGE MACHINE 9 Sheets-Sheet 7 Filed Jan. 23, 1955 Dec. 8, 1936. w. w. MocAlN PACKAGE MACHINE Filed Jan. 23, 1933 9 Sheets-Sheet 8 W. W. MCCAIN PACKAGE MACHINE Dec. 8, 1936.

Filed Jan. 23, 1935 9 Sheets-Sheet 9 Patented Dec. 8, 1936 PACKAGE MACHINE Wes W. McCain, Oak Park, Ill., assigner to Shellmar Products Company, Chicago, Ill., a corporation of Delaware Application January 23, 1933, Serial No. 653,033

11 Claims.

The present invention relates to the formation of packages, and has particular reference to a method and machine for making fabricated packages such as those having a relatively rigid bottom or backing member and a thin, flexible front or top member.

Packages of this general type have met with considerable favor in the art. One of such packages consists of a rectangular cardboard back to which are glued along the lower longitudinal edges thereof the longitudinal edges of a rectangular sheet of thin transparent cellulose sheeting such as the product known as "cellophane, the ends of the cellulose sheeting extending beyond the cardboard and being adapted to be folded over at a point spaced from the cardboard and secured to the cardboard to close the package. Preferably the side portions of the cellulose sheeting are provided with longitudinal bellows folds.

This extension of the ends of the cellulose material beyond the ends of the cardboard complicate somewhat the rapid production of the packages. Also, the necessity of producing packages of various lengths and widths makes it essential, from an economical standpoint, that a machine for producing the packages be adjustable for different sizes.

A principal object of the present invention is the provision of a method and apparatus for production of packages of the type described.

An additional object is the provision of apparatus for producing packages of different sizes.

These and other objects will be apparent from a consideration of the following illustrative and explanative description of a preferred embodiment of my invention and by reference to the accompanying drawings, in which Fig. 1 is a side view of a machine for making packages of the type described;

Fig. 2 is a side View of the opposite side of the machine;

Fig. 3 is a plan view of a part of the front section of the machine, and shows the forming and indexing means thereof;

Fig. 4 is a sectional view taken along line 4--4 of Fig. 3;

Fig. 5 is a sectional view taken along line 5-5 of Fig. 3;

Fig. 6 is a sectional view taken along line 6 6 of Fig. 3;

Fig. 7 is a sectional View taken along line I-'l of Fig. 3; Fig. 8 is an enlarged fragmentary view of the tube-forming mechanism used in connection with the machine;

Fig. 9 is a sectional view taken along line 9-9 of Fig. 8;

Fig. 10 is a sectional view taken along line 5 Ill-I0 of Fig. 8 and'also shows rollers for assisting the action of the tube-forming mechanism;

Fig. 11 is an enlarged fragmentary View of the second and third forming mechanisms for opening and closing the tube lip;

Fig. 12 is a sectional view taken along line I2-I2 of Fig. 11;

Fig. 13 is a sectional View taken along line I3-I3 of Fig. 11;

Fig. 14 is a sectional view taken along line Ill-I4 of Fig. 11;

Fig. 15 is a sectional view taken along line I5-I5 of Fig. 11;

Fig. 16 is a plan view' of the machine showing the hopper and gluing mechanisms thereof; 2O

Fig. 17 is a plan view of the machine taken along line I'I-I'I of Fig. 18 and shows the cutting and transfer mechanism of the machine;

Fig. 18 is 'a sectional view takenv along lines I8-I8 of Figs. 16 and 17; 25

Fig. 19 is an enlarged sectional view taken along line I9-I9 of Fig. 18 and shows the operating of the gluing rollers;

Fig. 20 is a perspective view of a package constructed by the machine; and

Fig. 21 is a sectional view of the package taken along line 2I-2I of Fig. 20.

In accordance with my invention, a web of transparent cellulose material is continuously formed into an open-sided tube provided with longitudinal bellows folds along its side portions and inwardly folded free edges along its top. These inwardly folded edges are continuously opened as the tube passes through the machine, and sections of cardboard backing material are deposited within the opened edges and resting upon the bellows fold at properly spaced intervals. The opened edges are then folded down and adhesively secured to the back of the cardboard, thereby forming a fabricated web of package lengths. This web is passed through a cutter which severs the cellulose material halfway between the end section of cardboard and the one next adjacent, to complete the formation of individual packages.

As shown in the drawings, a roll III of a cellophane web II is mounted on a shaft I2 journaled in bearings I3 of the frame structure I4. The web II is threaded around idler rolls I5, I6; I1, I8 and I9, which act to maintain the web in alignment. From roll I3 the web beneath the bottom former plate 23, the latter being supported near its rear portion by means of an arm 22 which is adjustably mounted on a cross bar 23 of the frame structure. The rear portion 20 inclinesdownwardly at an angle preferably less than 45 and joins the horizontal front portion 24.

As the cellulose web changes its direction from an inclined angle to the horizontal, its outer free edges, which extend beyond the lower former plate 23, are turned upwardly. A horizontal upper former plate 23 is suspended adjacent and spaced from the lower former plate 23 by an arm 21 extending from the cross bar 23 of the frame structure. Extending inwardly between the upper and lower former plates are side or bellows former plates 28 which press the upwardly extending edges of the cellophane sheet inwardly between the top and bottom plates to form a bellows fold. The free edges of the portions are turned over against the upper forming plate 23 by means of the rubber faced tension rollers 2|.

The folding of the web transforms the same into an open tube formation having longitudinal bellows folds along its edges and inwardly extending free edges at its top. This tube passes from the forming plates and between upper draw roll 29 and lower draw roll 33, these rolls being mounted on shafts 3| and 32, respectively, which are journaled in the frame structure I4. In addition to progressing the cellulose web through the machine, the draw rolls, at least one of which is preferably rubber faced, exert a certain amount of pressure on the folded portions of the partial tube, thereby making permanent the creases caused by the formation of bellows folds and the inwardly turned free edges. y

Before the fabrication of cardboard backing members with the folded cellulose web is possible it is necessary again to open the folded edges 25 so that the cardboard sections mayl be inserted therebetween. For this reason the folded web is passed through a second forming mechanism. From the draw rolls the folded web passes upwardly over an idler roll 33. It then passes downwardly beneath the inclined former plate 34, the free edges of the web being threaded above the plate, whereby the free edges 25 are turned upwardly and outwardly, the flared plates 35 assisting in this action as shown in Figs. 1l and 12.

As the cellulose we b travels downwardly from roll 33 the outer edges 25, which have been folded inwardly by the forming mechanism, pass over the top of plate 34, while the remainder of the folded web passes beneath the plate. Adjacent the bottom of plate 34 are provided plates 35 which are twisted from a position flat against the former plate to an upright position adjacent the outer edge of the former plate. As the folded-over free edges 25 of the cellulose web strike the twisted or flanged plates 35 they are rotated thereby into erect position, the action being assisted by the change in direction of the web adjacent the lower portion of plate 34 and the flanged plates 35, as shown in Fig. 5.

Mounted transversely of the path of the web Il and adjacent the inclined plate 34 is a shaft 33 having keyed thereon two associated gripper disks 31 which are adapted to hold therebetween one or more gripping fingers 33. The disks 31 are clamped together by bolts 33 and are proaoeasaa vided with a. number of spaced holes 43 adiacent their peripheral portion. Pins 4| are passed through corresponding holes 43 in the two disks and form shafts to which the gripper fingers 33 are pivoted. Adjacent the gripper fingers 33 and mounted in slots 42 of the disks 31 are the blocks 43 against which the outer portion of the gripper fingers are pressed by means of recessed springs 44 acting against the lower or inner end of the pivoted Zripper fingers. It will be seen that the number and position of gripping units can be varied as desired. To change the position of the gripper units the disks 31 are separated and pins 4| are changed to the proper holes 43, gripper fingers 33 being carried on the latter. Blocks 43 are also changed in position to correspond with the changed position of the gripper fingers, and the disks 31 are again clamped together. Gripper umts may be added or removed, as will be obvious. A hopper 45 is provided to hold a supply of cardboard backs 43 which are removed, one at a time, from the bottom of the hopper by means of the reciprocating dog 41. The hopper is made adjustable in width and length to accommodate cardboard backs of various sizes.

As the cardboard backs 43 are kicked from an open slot in the lower wall of the hopper by the forward motion of 41, they are received between an upper roll 43 and a lower roll 43;l carried on shafts 53 and 5|, respectively, which are suitably journaled in the frame structure. These draw rolls assist in withdrawing the backing members 43 from the hopper and transfer them to a second set of draw rolls 52 and 53 carried by journaled shafts 54 and 55, respectively.

From the second set of draw rolls, the cardboard backing members 43 are delivered into a system of tapes which travel at a speed faster than the surface speed of the gripper disks 31. These tapes carry the cardboard members substantially tangentially to the gripper disks and movement of reciprocating dog 41 is so timed that the cardboard members reach the gripper disks at the time gripper fingers 33 are momentarily opened.

Upper continuous tapes 53 are carried by a drive roll 33 mounted on shaft 3| which is journaled in the main frame structure I4. After passing beneath roll 33 the upper tapes pass in the direction of their travel toward the gripper disks 31 and at a substantially tangential direction thereto. Adjacent the gripper disks, tapes 53 turn about an idler roller 32 and travel in a reverse direction over roller 33 which is carried by an adjustable arm 34 pivoted to shaft 35.

Lower continuous tapes 51 pass about drive roll 33 mounted on shaft 53 which is journaled in the frame I4 in a manner similar to shaft 3|. Tapes 51 pass over roll 33 in the direction of their travel and extend along the lower side of upper tapes 53 to an idler roller 31 adjacent the gripper disks. After passing beneath roller 31, tapes 51 return to roll 33 across a roller 33 carried by an adjustable arm 33, the latter being supported on a shaft 13.

Shafts 35 and 13 and the idler rolls 32 and 31 are mounted in independent frame units 53 which are pivoted to and adjustable about shaft 53. 'I'he free end of the independent frame units 53 are adiustably supported by engagement in openings 1| of upwardly extending arms 12, the latter being pivoted to a shaft 13 mounted in the frame structure |4.

As before stated, the tapes travel at a speed greater than the peripheral speed of the gripper disks. 'I'he cardboard backing members are therefore thrust beneath the gripper fingers 38 as the latter momentarily, open at the point of contact of the cardboard and gripper disks. By proper regulation of the level of engagement of shaft 55 with pivoted arm 12, the cardboard backing members may be made to contact the gripper disks at any desired angle. As the tape system pivots about shaft 59, it will be seen that adjustment of the position of frames 58 will require adjustment of the upper tape 56. vTo make this tape relatively longer or shorter, it is necessary only to adjust the position of arm 64 on shaft 65, a suitable set screw being employed to lock the arm in any desired position. The relative length of lower tape 51 similarly is controlled by regulation of arm 69 on shaft 10.

Asshown in detail in Fig. 5, the pins 4I to which'the gripper fingers 38 are pivoted extend through one of the gripper disks and has secured to its outer end an arm 14 which carries a cam roller 15. 'I'his cam roller is positioned to contact and be depressed by la lower stationary cam 16 adjacent the lower portion of the gripper disk and an upper stationary cam 11 adjacent the upper portion of the gripper disk. When the rollers- 1-5 are not in contact with these cams, the gripper fingers are pressed against the gripper blocks by the action of compression spring 44 acting on the opposite end of the gripper fingers. However, as the cam roller 15 strike the cam 16 and 11 the gripper fingers are opened against the pressure of springs 44. When the cam roller leaves the cams, the springs 44 cause the gripper fingers again to press against the gripper blocks.

Upper cam 11 is so positioned as to cause the gripper fingers 38 to open up just before the cardboard backing members 46 are thrust into tangential position with respect to the gripper disks, and, as the cardboard members are traveling faster than the peripheral speed of the gripper disks, the cardboard is thrust beneath` the opened gripper finger, and is maintained in this position by the pushing action of the tapes until the cam roller passes out of contact with cam 11, whereupon the gripper finger closes to engage the cardboard.

After engaging the cardboard backing member, the gripper units continue rotation in a clockwise direction as viewed in Fig. 4. To provide a guide andguard for the cardboard members as rotated with the gripper unit a semicircular plate 18 is mounted concentric with the gripper disks. This plate is brazed to a bar which is attached to the support member 19. The latter member also acts as a support for the former unit 34, and is pivotally mounted on a cross rod 88 which is attached to the frame of the machine, a set screw 8l being employed to lock the member 19 in any desired position. It will be observed that this mounting of the former member 34 permits of its adjustment with respect to the roll 33.

The gripper disks 31 ordinarily are provided with a plurality of gripper fingers, so that a plurality of cardboard backing members are carried thereon in spaced relation. As the gripper disks rotate into such position that the gripper fingers are in the position shown by the lower gripper ngers in Fig. 4, the cardboard backing members carried thereby are inserted between the upraised free edges 25 of the folded cellulose web and above the bellows fold thereof. At this DOint the cam wheel 15 strikes the lower cam 16 and the gripper fingers open, thereby depositing the cardboard sections in the folded web at spaced intervals. A

In traveling from the hopper 45 to the gripper disks' 31 and while held by tapes 56 and 51, the cardboard backing members are provided along each longitudinal marginal portion of their lower side with a line of glue or other suitable adhesive. As shown in Fig. 18, a glue pot 82 is mounted to the frame structure beneath the tapes 51. Within this pot rotatable glue wheels 84 are mounted, and make peripheral contact with glue wheels 85, the latter being mounted on shaft 59 as shown in Fig. 19, and making contact at their upper portion with the cardboard backing members along the longitudinal edges of their lower sides, thereby depositing marginal lines of glue.

Thus, as the folded cellulose web passes beneath the gripper disks it is provided with a series of spaced cardboard backing members having longitudinal glue lines on their upper surface and resting upon the upper layer of the bellows fold in the web. The web then passes through a third former, the structure and action of which is shown in Figs. ll, 13, 14 and 15. This third former consists of a longitudinally extending base plate 86 above which the web travels and two twisted or flanged plates 81, adjustably mounted thereon. Plates 81 are twisted from an upright position adjacent the outer edges -of the cellulose web, as shown in Fig. 13, into a position parallel to and spaced from the base plate 86, as shown in Fig. 15. As the cellulose web containing spaced cardboard backing members passes through the third former, the opened lip portions or free edges 25 are rotated back into closed position and in contact with the cardboard backing member, thereby causing the edges or lips 25 of the web to adhere to the glue on the cardboard backing members, and completing the fabrication of the web.

'I'he plate 86 is provided with a central longitudinal recess in which travels in the direction of travel of the web a continuous tape 88. This tape passes about an idler roller 89, a tension roller 98 which is carried on an adjustable arm 9|, and a drive roller 92. The idler roll 89 is positioned beneath the gripper disks and the tape is driven in such a manner to impart forward motion to the cellulose web throughout the length of plate 86.

An upper continuous tape 93 is mounted immediately above the plate 86 and cooperates with the lower plate in transferring the fabricated web in a forward direction. An adjustable idler roller 94 carries one end of the continuous tape 93 while the opposite end passes about an upper drive roll 95, which is mounted immediately above the similar drive roll 92. The rolls 95 and 92 carry tapes 93 and 88 in recesses, whereby the rolls are permitted to contact the fabricated web and toy exert a pulling effect thereon. Also, as these rolls contact the fabricated web adjacent its edges, the folded-over edges of the cellulose web are pressed into contact with the glued cardboard backing member. It is preferred that this contact be light in order to prevent squeezing of the glue from beneath the edges 25.

Roller 94 is mounted on adjustable arms 96 and 91, whereby the tension of upper tape 93 as well as its distance from lower tape 88 may be varied as desired.

The main drive for the cellulose web is provided by draw rolls 30 and 3|. However, it is important to maintain the forward end of the web taut, and for this reason the rolls 92 and 95 are preferably rotated slightly faster than the peripheral speed of draw rolls 30 and 3|.

A second base plate 98 is mounted on the side of rolls 82 and 95 opposite plate 88 and acts as a continued support for the fabricated web. The importance of this will be further apparent upon subsequent consideration of the differential drive of the machine.

Above plate 98 is mounted a small, centrally positioned roller 99 carried by a shaft |00. This roller is driven at a speed equal to that of tension rolls 92 and 95, and continues the even travel of the fabricated web into the cutting mechanism to be described presently. A similar roller carried by shaft |02 is mounted beneath base plate 98 and extends upwardly through an opening therein into contiguous position with respect to roller 99.

After the cellulose web is fabricated to the spaced cardboard backing members, the web is severed between the end cardboard and the one next adjacent to form individual packages having a rigid back member and thin, flexible, transparent facings and ends extending beyond the ends of the cardboard back. Ordinarily, one or both of the projecting ends of cellulose material will be folded over and glued to the back of the cardboard, before or after insertion of articles to be packaged, but for present purposes it is suillcient to describe the mechanism by which the package is completed without folded-over ends.

The cutting mechanism by which individual packages are severed from the fabricated web comprises an upper cutting roll |03 provided with one or more cutting knives |04 secured thereto and a lower stationary cutting plate |05. The mechanism shown in the drawings has four knives arranged at 90-degree intervals about the cutting roll. These knives are arranged to cut at intervals. That is, they are so timed as to cut individual package lengths from the web by severing the cellophane web between adjacent sections of cardboard.

Cutting roll |03 is mounted on a shaft |06 which is journaled in bearings |01 adjacent the cutting knives, an extension of the shaft being journaled in a third bearing in the frame structure of the machine.

As package lengths-are severed by the cutting mechanism, they are received by a system of tapes which travel at a greater speed than the speed of the fabricated web, and are carried thereby to a source of disposal or to mechanism for performing further operations such as end folding. This system, as shown in Fig. 18, includes upper tap |08 carried by idler rollers |08 and ||0, a tension roll carried by an adjustable arm ||2, and a drive roller H3. Below tapes |08 are mounted similar tapes |4 carried by idler rollers ||5, IIS, ||1, H8, ||9 and |20, and a drive roll i2| positioned beneath roll H3. Idler roll i8 is adjustably mounted in horizontal slots |22 of the frame structure and carries gears |23 which mesh with the gears of a stationary rack bar |24. The tension of the tapes is adjusted by regulating the position of roller ||8 in the slot |22, a nut or set screw being employed to maintain the roller in any desired position.

To maintain the severed package lengths in alignment during their transfer by tapes |08 and ||4 a guide |25 is mounted adjacent the tapes. This guide is carried by arms |26 which are supported on a bar |21.

The individual packages |28,.,shown'in Figs. 20 and 21, emerge from tapes |08 and ||4 and fall into a hopper |28.

An important feature of my machine is the indexing system by which packages of diil'erent lengths may be produced. To accomplish this result it is necessary to regulate the action of the cutting knives in accordance with the length of the cellulose material between successive cuts. In accordance with my invention an index wheel I 40 is keyed to shaft 36 upon which the gripper units are mounted. The index wheel, which is preferably larger in diameter than the gripper disks, is provided with a series of openings |4| adjacent its periphery, which openings correspond in spacing to the spacing of openings 40 in the gripper disk 31. The openings 40 are arranged in a combination which will allow one, two, three, four, five, six or seven gripper fingers to be mounted thereon in equally spaced relation, the number chosen being dependent upon the length of the cardboard backing member and the length of the cellulose end portion extending beyond the cardboard in the complete package.

In openings |4| in the index wheel corresponding to the openings 40 of the gripper disk into which are secured gripper fingers, are mounted cam rollers |42. These rollers, in rotating with the gripper fingers, transfer power through a Geneva motion mechanism to a chain of gears operating the cutting knives, thereby providing for one cutting operation for each cardboard backing delivered by the gripper units, and for timing such operation to sever the web mid-way between adjacent sections of cardboard.

The cam rollers |42 rotate with the index wheel and engage the cam wheel |43 at the openings |44 therein, continued rotation of the index wheel imparting 80 degrees rotation to the cam wheel, thereby causing one of the knives |04 to operate.

Cam wheel |43 is keyed to a shaft |45 which is journaled in the frame structure I4 and carries a gear |46. This gear operates the cutting roll through a chain of gears |41, |48, |49, |50 and To prevent rotation of shaft |45 between cutting periods, a cam-locking wheel |52 is keyed to shaft 36 of the index wheel, and this cam wheel engages depressed portions |54 in a cooperating cam-locking wheel |53 which is keyed to shaft |45. When the cam rollers |42 rotate into a positionto operate the cam wheel |43, the cam-locking wheel |53 is released from engagement with cam-locking wheel |52 by rotation of the depressed portions |55 of the latter into a position adjacent the cam-locking wheel |53. After 90 degrees rotation the two cam-locking wheels |52 and |53 again engage to stop rotation of the cutting knives. It will be understood that a cam-locking wheel 52 will be employed which has anumber of depressed portions |55 equal to the number of cam rollers |42.

The length of packages produced by the machine does not depend upon the speed of the web therethrough, and the speed of the web is not necessarily changed upon a change in the package length. Package length isr controlled by the number and length of cardboard sections inserted in the web. If it is desired to produce a relatively ong package, only one gripper finger may be em loyed. In such case, only one cam roller is mounted on the index wheel, whereby the cutting mechanism operates only once for each revolution of the gripper units. It is also in the drawings, the machine is set for the production of a package having aI length requiring three gripper fingers on the gripper disks, a similar number of cam rollers being mounted on the index wheel, and cams |52 and |53 being ernployed with three depressions.

/In order to feed a cardboard backing member for each gripper finger employed on the gripper disks, a cam |56 having a number of equally spaced depressed portions equal to the number of gripper lingers on the gripper disks is keyed to shaft 36. This cam operates a cam follower |51 which imparts reciprocal motion to the lever arm |58, the latter being pivoted to the frame at |59, and having its free end secured to a bar |60. This bar operates a crank arm |6| which rotates shaft |62 to which the reciprocating dog 41 is attached by meansf of open ended arms |63. Thus, each time a gripper finger opens up, a cardboard backing `member is fed into it from the hopper 45.

To drive the mechanism described heretofore, any suitable means may be employed. As shown in the drawings, a main drive shaft |65 has a gear |10 meshing with gear |1| on shaft |12. The latter shaft is provided with a sprocket |13 and chain |14 which drivesshaft |15 through sprocket wheel |16. The opposite end of shaft |15 has a gear |11 and a pivoted arm |18, the position of the latter being controlled by nut |19 and slot |80. A gear |8| is journaled in arm |18 and drives a larger gear |82 which is keyed to shaft 36 of the gripper disks and index wheel.

Gear 11 also meshes with an idler gear |83 which drives a second idler gear |84. The latter gear has connected to it a bevel gear |05 which transmits power through a similar bevel gear |86 to a vertical shaft |81. To the lower end of shaft |81 is attached a bevel gear |88, and this gear drives horizontal shaft |89 through a similar bevel gear |90. Shaft |89 has a bevel gear |9| keyed to it in order to drive, through bevel gear |92, a short vertical shaft |93. Shaft |93 has a bevel gear |94 meshing with a bevel gear |95 on shaft to which is connected gear |96, the latter serving to drive gear |91 keyed to an exten- `sion of tension roll 92. Gear |91 drives a similar gear |98 on drive roll 95, and also meshes with an idler gear |99, which drives gear 200 on the shaft |02 of lower roller 0|. Gear 200 meshes with a similar gear 20| on shaft l|00 of roller 99.

Shaft |02 is provided with a sprocket wheel 202 and a chain 203 meshing therewith, the chain acting to drive an idler gear 204 which imparts rotation to shaft 5| of draw roll 49 by means of gear 205. Gear 205 drives a similar gear 206 on shaft 50 of roll 48. Gear 204 also meshes with gear 201 on lower shaft 55 of lower draw roll 53. Shaft 54 of upper draw roll 52 is driven by gear 208 meshing with gear 201. Gear 201 drives an idler gear 209 which in turn drives gear 2|0 keyed to shaft 59 of the lower tape driving roller 66. The upper tape driving roller is driven by gear 2|| on shaft 6| meshing with gear 2|0. Gear 2|0 also drives af larger gear 2|2 which is connected to the shaft ofthe lower glue wheel 84. anw

Idler gear |84 meshes with gear 2| 3 keyed to drive shaft 2|4, this shaft passing through and being journaled in housing members 2|5 and 2|6 to provide rigidity to the shaft. At the opposite end of shaft 2|4 a gear 2|1 keyedv thereon meshes with an idler gear 2|8. The idler gear 2|8 drives a larger gear 2|9 which is connected to the housing 220 of a differential device. The outer end of this housing is rotatably mounted about differential shaft 22|.

To an extension 222 of differential shaft 22| is connected a relatively large worm gear 223. The shaft 22| is ordinarily locked against motion by a worm 224 meshing with the worm gear 223, the worm being mounted on a shaft 225 and controlled by a hand lever 226. For this reason, all of the motion of differential housing 220 is transmitted, through differential gears 221, 228, 229 and 230, to an extension of shaft 32 to which gear 230 is keyed, the shaft 32 lrotating twice for each rotation of the differential housing. It will be understood that by proper directional rotation of worm 224 vand consequently shaft 22|, the speed of rotation of shaft 32 may be temporarily increased or decreased.

In producing packages of the type described, it is frequently desirable to print the cellulose web prior to the formation of the package. That is, the package is produced from a web of cellulose sheeting having a printed design at properly spaced intervals. It is therefore necessary to insert thel carboard backing members in association with the sheeting in such a manner that the printing will be properly positioned with respect tothe backing and cut-off; As discrepancies are bound to arise with this sort of material, the errors which normally arise would make economical production of the packages impossible without special means for providing compensation.

In accordance with my invention, if the design gets out of proper association in the package, it may be brought back into proper association by manipulation of hand lever 226. That is, motion of the hand Wheel is transferred to gears 221, 228, 229 and 230 of the differential device, and the normal speed of the lower draw roll is increased or decreased, as the case may be, without affecting the speed of the cutting and cardboard inserting units of the machine. The cellulose web is` thereby retarded until in proper association, or speeded up until in proper association.

To drive the upper draw roll, a gear 23| on shaft 32 is made to mesh with a similar gear 232 on shaft 3| of the upper draw roll. Consequently, a change of speed of the lower roll by manipulation of the differential device is accompanied by a similar change in the speed of the upper roll.

As stated heretofore, the present description is for purposes of illustration and explanation of a preferred embodiment of my invention. It will be understood by one skilled in the art that many variations may be made, and all variations and modifications which come within the spirit of my invention are intended to be included in the appended claims.

I claim:

l. In a machine of the type described, means for feeding a continuous web of a cellulose material, means for folding over the outer edges of said web, means for unfolding said edges, means for inserting cardboard backing members between said edges at spaced intervals, means for adheaively securing said edges to said cardboard members, and means for severing said cellulose material between adjacent cardboard members.

2. In a machine of the type described, a bellows tube former, means for advancing a web through said former to produce a bellows tube having its free edges folded inwardly, means for opening said free edges, a cardboard feeding mechanism; means for applying longitudinal lines of glue to cardboard backing members fed by said feeding mechanism, gripper disks having gripper fingers for receiving cardboard backing members fed by said mechanism, said disks being operative to transfer said backing members to a position between the opened free edges of said web, means for releasing said members when in such position, cutting means for severing said web, and means responsive in accordance with the action of said gripper iingers for controlling the action of said cutting means.

3. In a device of the type described, a web feeding means, means for associating cardboard backing members with said web at spaced intervals, said associating means being adjustable to accommodate backing members of different lengths, cutting means for severing said web between adjacent cardboard members, and means driven by said associating means for operating said cutter, said last named means being adjustable in accordance with the adjustment of said associating means.

4. In a device of the type described, means for progressing a web of cellulose material, means for associating cardboard backing members with said web in spaced relation, means for severing said web between adjacent backing members. and means for adjusting the speed of said web independent of the speed of said associating and cutting means.

5. In a device of. the type described, means for progressing a web of cellulose material..

means for associating backing members with said web in spaced relatin, means for severing said 'web between adjacent backing members, means for maintaining said web under tension, and independent means for adjusting the speed of said web progressing means.

6. In a device of the type described, means for progressing a web of cellulose material, means for associating cardboard backing members with said web in spaced relation, said associating means including gripper disks having a plurality of peripheral openings spaced in such a manner as to receive any number of gripper fingers up to sevenv in equally spaced relation, gripper nngers for said disks, and a driven shaft' for said disks, cutting means for severing said web between adjacent cardboard backing members, and means for operating said cutting means in accordance with the operation of said-associating means, said 4last named means including an index wheel mounted on the shaft of said in accordance with the spacing of the openings in said gripper disks, cam rollers mounted in certain of the openings in said index wheel corresponding to the opening in said gripper disks in which said gripper ngers are mounted, a Geneva mechanism operated by said cams, and means responsive to said Geneva motion for actuating said cutter.

7. In a device of the type described, means for progressing a web of cellulose material, means for associating backing members with said web, means for adjusting the frequency of such association independently of the speed of said web, cutting means for severing said web between adjacent backing members, means independent of said web progressing means for operating said cutting means ln accordance with the adjustment of said associating means, and means for adjusting the speed of said web progressing means independently of said associating and cutting means.

8. In a device of the type described, means for forming a bellows fold having inwardly folded free edges in cellulose material, means for outwardly folding said free edges, means for inserting a backing member between said outwardly folded edges, and means for securing said outwardly folded edges to said backing member.

9. A method of forming packages which comprises progressing a web of relatively thin nexible material, continuously forming a bellows fold with inwardly extending free edges in said web, continuously folding said edges outwardly, intermittently depositing backing members'between said outwardly folded edges at spaced intervals, securing said edges to said member, and severing said web between adjacent backing members to form individual packages.

' 10. In a machine of the type described, means for advancing a continuous web having a design printed thereon at spaced intervals, means for associating cardboard members with said web, compensating means for adjusting the relative position between said cardboard members and said web so as to deliver said cardboard members in predetermined position with respect to the printed design on said web, and means for severing said web between adjacent cardboard members along a line spaced from adjacent ends thereof.

11. In a device of the type described, means for progressing a web of material, means for forming opposed bellows folds in said web, means for associating a sheet of another material on the inside of the free edges of said web and in overlapped relation thereto, and means for securing the inner portionsof the free edges of said web with the outer portion of said sheet.

WEB W. MCCAIN.

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