US1862346A - Carton end gluing and closing means - Google Patents

Description

June 7, 1932. E. VAN DER PYL ET AL CARTON END GLUING AND CLOSING MEANS Filed Jan. 22, 1929 9 Sheets-Sheet l 2 7 2 6 2 6 2 o y Jp ...2 5 M. 2 W 2 Mm 2 f 8 2 2 W IWH Q 7 M 5 Wm 5w 1w 8 2 o MW t wh w i? y o 0 HI)? 2 ma J1me 1932- E VAN DER PYL ET AL 1,362,346

CARTON END GLUTNG AND CLOSING MEANS Filed Jan. 22, 1929 9 Sheets-Sheet 2 Q, 7 M m 7, Imreeaiom:

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mnwiigya June 7, 1932. E. VAN DEF! PYL. ET AL. 1,852,346

CARTON END GLUING AND CLOSING MEANS Film? Jan. 22, 1929 9 Sheets-Sheet 4 l I I I I I Inveaio rs: Edward Van 0792 1 342 1202322 311 d'iimpson June 1932- E. VAN DER PYL ET AL 1,862,346

CARTON END GLUING AND CLOSING MEANS Filed Jan. 22, 1929 9 Sheets-Sheet 5 Edawarcl Vazz der'lyl g i BoberZHSiW ow June 7, 1932. E. VAN DER PYL ET AL 1,862,346

CARTON END GLUING AND CLOSING MEANS Filed Jan. 22, 1929 9 Sheets-Sheet 6 1221792230311- Edlvwd V022 derPgyi BoberiH 6W6 08 by rim 01., f z w- June 7, 1932. E. VAN DER PYL ET AL CARTON END GLUING AND CLOSING MEANS Filed Jan. 22, 1929 9 Sheets-Sheet 7 Emma Vw derl'yi Boberilff. Jifaaepaoza/ J1me 1932- E. VAN DER PYL ET AL 1,

CARTON END GLUING AND CLOSING MEANS File n-' 2, 1929 9 Sheets-Sheet 8 Izweaiom: .E'dlqard Vm dear-1' 2 flozzei iflgfimson 27 a a Z l/p June 7,1932. E. VAN DER PYL' ET AL CARTON END GL UING AND CLOSING MEANS 9 She ets-Sheet 9 Patented June 7, 1932 UNITED STATES PATENT oFFlca EDWARD VAN DER. PYL, OF WORCESTER, MASSACHUSETTS, AND ROBERT H. STIMPSON,

OF NASHUA, NEW HAMPSHIRE, ASSIGNORS, BY MESNE ASSIGNMENTS, T0 FRED- ERICK L. EMERY, OF BOSTON, MASSACHUSETTS CAR'IUN END GLUING AND CLOSING MEANS Application filed January 22, 1929. Serial No. 834,249.

This invention relates to machines for filling and closing cartons such as are used for powdered or granulated material, or material in small lumps, or even a single lump, and has particular reference to the means for closing and gluing one, and herein the upper end flaps of the carton, as of the standard commercial type.

The invention'is especially adapted for use with the type of machine including a long bed or base along which the carton is carried by an intermittently moving carrier which stops at fixed oints, sometimes termed stations, sufiicient y long to permit certain instrumentalities located at those points on the machine bed to perform specified functions. These functions may be the opening of the collapsed carton, which usually is fed from a magazine on the machine, the closing and sealing of the lower end flaps, filling the carton, closing and sealing the upper end flaps and finally ejecting the fi led carton. For sealing the carton flaps of course any suitable adhesive may be used, and while we have herein referred to the use of glue, we use that term generically as comprising any satisfactory adhesive.

For the purpose of effecting the three last functions of filling the carton, closing and sealing the upper flaps and ejecting the carton, our invention includes, among others, the novel features hereinafter illustrated or described.

In the drawings of the present embodiment of our invention,

. a Fig. 1 is a side elevation of our novel upper carton end closing means mounted at one side, as the front of the long base, part of which only for convenience is shown herein in cross section;

Fig. 2, a vertical section on an enlarged scale, on the line 22, Fig. 1;

Fig. 3, a plan;

Fig. 4, a vertical longitudinal section on the line 4-4, Fig. 3;

Figs. 5 and 6, respectively, sections on an enlarged scale on the line 5-5, Fig. 3, providin end views of the glue applying roll and ap folder and presser, in different operative positions;

Fig. 7 a detail of the glue-applying-roll actuating gears;

Fig. 8, a vertical section on the line 88, Fig. 3, showing, on an enlarged scale, the inner major flap-folder-and-presser actuating gears;

Figs. 9 and 10, side elevations res ectively of the outer major flap wiping, olding, carton ejecting and drying means in different positions;

Figs. 11 and 12, respectively, an upper and a lower face view of the inner major flap wiping member shown in Figs. 9 and 10;

Figs. 13 to 18 inclusive illustrate different steps in the process of positioning the flaps for action thereon by the glue applying roll;

Figs. 19 to 24 inclusive illustrate different progressive steps in the act of applying glue to one side of the major and minor flaps and folding the inner major flap while holding the minor flaps and outer major flap in the desired positions; and

Figs. 25 to 28 inclusive illustrate diflerent steps in the process of closing the outer major flap while holding the other flaps in the desired position.

As already stated, the preferred type of machine for which our invention is adapted, Fig. 1, includes a long bed or base 1, channeled on top, as at 2, to receive any suitable endless conveyor 3 with carton carriers or arms 4, between each two of which is held a carton 5 edgewise, that is, by its narrow or minor sides, its lower end resting on rails 6. In this view, Fig. 1, the carton is shown moving edgewise, it having previously passed stations at which it was 0 ened from a collapsed condition, as fed rom a magazine,

is rotated, Figs. 1, 2, 3, by means of a disk 14 on the shaft 30, which disk receives a pin 15 on a gear 16 on the shaft 13 which gear 1.6, Figs. 1, 3, is also in mesh with a smaller gear 17 on the shaft 18 carrying a glue regulating roll 19 adjacent the feed roll; and by this means, the roll 19 also is rotated, Figs. 1, 3.

This roll 19, Figs. 1, 3, 4, is mounted in arms 22 pivotally suspended from fixed arms 23 on the sides of the reservoir. The lower ends of the arms 22 carry rods 24 which extend through ears 25 on the reservoir walls, and carry adjusting nuts 26 and lock nuts 27 by means of which the position of the roll 19 relative to the main roll 12 may be determined to regulate the amount of glue that the latter roll shall carry up from the reservoir to the applying roll 12, to be described, so that the supply may at all times be uniform.

Provision is made, however, Figs. 1, 3, including a spring 28 about each rod 24 and seated against a nut 29 thereon. and the ear 25 on the reservoir by means of which the rod is yieldingly held in its position; so that if a lump of hard substance of any kind, as foreign matter or dried glue, is picked up by the roll 12, the roll 19 may yield relative to the roll 12, by the sliding of the rod 24 against the spring 28 to permit the hard lump to pass between the rolls without injury to either of them.

The shaft 30, Fig. 3, mounted in one post 8, carries a sprocket wheel 31 over which, Fig. 1, runs a chain 32 from an idler 33 on the bracket 7 and from a sprocket wheel 34 on a drive shaft 35 by means of which the mechanism is driven.

On the shaft 38, Figs. 1, 2, 3, is a gear 40 in mesh with a smaller gear 41, Figs. 1, 3, which is pinned fast to a gear 43, both running loose on shaft 42, also in post 8, gear 43 in turn meshing with a gear 44 on a shaft 46 carrying the glue applying roll 47, Fig. 4, the shaft 46 being carried by curved arms 48, Figs. 5, 6, 7, 20 to 24, pivotally mounted on shaft 49, Figs. 4, 5, 6, in the radial arms 50 fast on the shaft 42. This keeps the glue applying roll constantly turning.

The arms 48 and roll 47, Figs. 5, 6, are yieldingly held in desired position by helical springs seated on lugs 56 on the segmental ends 57 of the cylindrical shaped flap presser 57 to be referred to, on the shaft 42, and seated at their opposite ends against the inner ends of the arms 48 respectively. This permits clockwise rotation of the roll 47 on the shaft 46 and limited swinging movement of the arms 48 about the shaft 49 when, Figs. 5, 6, during the application of glue to the carton flaps the roll 58 on the shaft 46 and adjacent the gear 44 rides up on a track 59 on the inner wall .of one post 8, as will be described presently, at one point during the rotation and travel of the roll 47 about the shaft 42. The arms 48, Fig. 4, also carry.

top major flap 63, Figs. 13, 14, 15 and 19 to 24, or the one adjacent the glue roll 12, we have provided novel means comprising, Figs. 3, 5, 6, 20 to 24, a series of curved fingers 64, Figs. 3, 5, 6, on the ends of ribs 65 on the outer face of the arcuate yielding flap presser 60 on the arms 48, similar ribs being provided also on the narrow circumferential flap pressing surface 57 on the fixed ends 57.

While the glue applying roll 47 is always rotating, about the shaft 46, the flap folding fingers 64 are given intermittentmotion in harmony with the action of the carbon conveyor and are so actuated by the following mechanism.

On the shaft 38, Figs. 2, 3, 4, 8, and at the end opposite gear 40 is a loose gear 67 in mesh, Figs. 3, 8, with a gear 68 fast on the shaft 42 in the, Fig. 3, upper post 8. Each gear, Fig. 8, is mutilated and provided with a cooperating smooth face of sufficient length to produce the necessary rest or dwell in the rotation of the ear 68, and accordingly an intermittent action of the fingers 64 timed to register with the resentation of a carton for gluing and f0 ding.

On the shaft 38, Figs. 2, 3, is a collar 69 against which seats a spring 70, the opposite end of which holds a clutch member 71 in contact with a cooperating clutch member 72 on the hub of the gear 67 already described, and thus normally causes said gear to rotate. The clutch member 71, however, is provided with a circumferential groove 73 to receive through a slot 75, in the casing 76, dotted lines, Fig. 2, a pin 74 in the casing 76 of the machine and by means of which the clutch member 71 may be disengaged from the member 72, and motion of the flap pressing fingers 64 interrupted at will for any reason requiring such action, at the same time allowing the glue rolls 12, 19 to continue rotating to ensure the presence of a film of glue over the entire roll surface at all times.

As the cartons are presented, Figs. 13 to 15, by the carrier to the gluing and flap folding members 'edgewise with both the minor and major flaps upstanding, Figs. 13, and as the major flaps are folded outside or on top, obviously the minor flaps must first be infolded, and we will now describe our novel means for effecting this result.

Fig. 13 is a vertical cross-section through a carton as it arrives edgewise with its bottom closed, before the upper flap folding members. On the bed of the machine there are provided grooved guides 80 in which slide the top edges of the major flaps 63,482.

As these guides approach the flap folding members, they are spaced apart and flattened out as shown in Fig. 14, and turned to such position as will open out and downwardly the major flaps 63, 82, and still farther-along the guides, Fig. 15, are so positioned as to lay the major flaps 63, 82 substantially fiat.

From this point further steps in the folding of the minor flaps can best be understood by reference to Figs. 1 6 to 18, which show vertical sectional views of the carton at right angles to the views of sections 13, 14, 15, with the major flaps lying down as in Fig. 15, and the minor flaps in process of being infolded.

For lnfolding the minor flaps 85, 86, we have provided the following novel mechanism. On the Fig. 2 right hand end and, Fig. ,3, upper end of shaft 42, it carries a helical or pigtail flap folding member 87 provided at its inner end with a longitudinally extended plate 88 of suitable width. This plate is timed in its rotation to be at rest, Fig. 16, in the path of the approaching minor flap 85 as the carton is moved from one sta tion to the next.

As the flap 85 contacts with the plate 88, the latter lnfolds or lays down the flap 85, see Figure 16. When the carton comes to rest flap 85 is held down by either plate 88 or by a fixed guide plate 88 on bracket 8, should the flap tend to spring up too far after the plate 88 has left it. Immediately the carton comes to rest, the pigtail is caused to rotate to the right, Figure 3, with shaft 42, as it is fast on it. As the pigtail,

. Fig. 17, rotates, it engages the opposite and longer minor flap 86 on its outside surface, Fig. 17, and as the pigtail rotates, it gradually presses flap 86 inwardly and downwardly, see Figs. 17, 18 and 2, until, after a complete revolution of the pigtail 87, the plate 88 is brought into contact with the outer surface of the flap 86 and lays it down beneath flap 85, therefore, also holding this one down, or flap 85 may be allowed to stand at such an angle by the guide 88, that flap 86, ifsufliciently short, will be folded even with 85 when the carton is again moved to the left, Figs. 16, 17 and 18. The member 88 is provided with a laterally extended guide finger 88 which assists the member 88 in holding down the flap 85 as the carton leaves the member 88*.

The proportions of the carton may not be such that these flaps will overlap either way, therefore, they will lie in line with each other and be guided under the flap presser 60, by means of the fixed guide 88, Fig. 2. As the carton passes beneath and away from the pigtail 87 and guide 88, it approaches the fingers 64 already described and as shown in Figs. 19 and 20, with its- minor flaps 85, 86 infolded. The rear end of the reservoir 10, Figs. 4, 19 is provided with an overhanging end 91, wlth a curved flap supporting upper face 92. On the opposite side of the carton and beneaththe flap pressing member 57, Fig. 19, 1s a similar member 93 supported from the base. The carton is fed by the carrier between the guides 94, 96 to a position between the fla supporting members 92, 93, Fig. 19.

In order to insure the proper positioning of the flap 63 so that the fingers 64, Figs. 4, 19 to 24 may engage it and infold it, we provide, as a precaution, a vertically reciprocating plunger 95 in the guide 96 actuated, Fig. 1, by a link 97 on the end of an arm 98 on a short shaft 99 beneath the bracket 8, which arm is actuated by a rod 100, see also Fig. 2, carrying a roll 101 about a cam 102 on the drive shaft 35 and thereby acts to raise the flap 63, Fig. 21, for the purpose explained.

As the shaft 42, Figs. 4,- 5, rotates, the gluing roll 47, Figs. 19 to 21, lays a film of glue on the inner face of the outwardly extended flap 63, the outer faces of folded minor flaps 85, 86 and the inner face of the unfolded ma- ]0I' flap 82, the fingers 64, Fig. 22, then pick up the flap 63, turn it inwardly, and the ribs 65, Figs. 23, 24, continue the infolding and pressing action over the infolded major flaps.

In order to prevent the glue applying roll 47 from crushing the infolded inner flaps 85, 86, and carton edge walls, Fig. 21, one of the posts 8 is provided on its inner face, Figs. 5, 6, with a short track 59 already referred to which is sufliciently high to raise the roll 58 on the shaft 46 by turning the arms 48 about the shaft 42 and so cause the roll 47 to pass over the flaps lightly in substantially a.

straight path and thus prevent crushing of the cartons.

As the roll 47 drops, Fig. 22, after the roll 58 leaves the track 59, the roll, as described, lays a film of glue upon the inner face of the major flap 82, but the ribs being narrow do not disturb it greatly as they pass over it.

For closing or folding the remaining major flap 82 as the carton continues its travel after its mate 63 has been folded by the fingers 64, Fig. 24, we have provided, Figs. 11, 12, novel means including a pressure plate and guide 105, with longitudinal ribs 106 on its lower face, which is carried by arms 107 on a hub 108 fast on a shaft 110, Fig. 9, in a bracket 111 secured to the bed 1. This shaft carries also, fast on it, an arm 112 carrying a rod 113 and roll 114 in a cam path 115 on disk 116 on shaft 35 which causes the member 105 to lightly contact with the unglued upper face of the major flap 63 as the plate 105 descends upon it, the flap 82, Figs. 25, 26, being gradually raised by a flap guide 118 as the flap slides along in contact with it.

Further travel of the flap against the guide 118 brings the former, Fig. 27, to an upright position and also brings the carton top beneath the, Fig. 11, right hand and Fig. 12 left hand end of the presser 105 on which, see also Figs. 11, 12, are mounted several rolls 120 which replace the ribs 106. Here the carton is positioned directly opposite the flap pressing and delivering belts 121, 122, Figs. 9, 10, 27, 28, running over pulleys 123, 124, and idlers 125, 126, the idlers 125 being mounted in elongated beings and thus free to move in a limited vertical direction, positioned respectively above the lower run of belt 121 and below the upper run of belt 122 to provide continued pressure upon the carton ends for a limited period to ensure the complete sealing and drying of the end flaps, as the carton travels to the packing room.

The ejector for delivering the carton to the conveyor comprises a plunger 127, slidable in a bracket 128 to the side of which plunger is pivoted, Figs. 9, 10, a link 129, the opposite end of which is connected to the long arm 130 of a lever, while the short lever arm 131 is connected to a roll 132 which travels in a cam groove 134 on the near side of the disk 135 adjacent disk 116 on the shaft 35. The rolls 120 on the member 105 facilitate the travel of the carton from the carrier 4 to the conveyor belts 121, 122 with no danger of creating any drag on the carton.

The operations of gluing and closing the top of the carton herein described, take place at or between five stops or stations of the intermittently moving conveyor 3. The carton comes up to the first of these stations with the lower end closed and the carton filled, but with the top end open, and all four flaps standing upright with the top edge of the two major flaps 63 and 82 entered in guides 80. As the carton moves from the first to the second station the major flaps 63 and 82 are, Figs. 14, 15, spiraled out and down, substantially horizontal, by means of the guides 80 already described. These guides 80 continue over and pass the second operating station.

At the second operating station the function of. the machine is to fold inwardly and downwardly the two minor flaps 85 and 86, Figs. 16, 17, 18 and 2, as shown diagrammatically in Figs. 16 to 18, which are crosssections of the carton at right angles to the sections shown in Figs. 13 to 15. The folding of these tabs is accomplished by the pigtail 87, Figs. 2, 3, 16, 17 and 18, to which is attached the plate 88, and by the guide 88.

As the carton moves from the first to the second station, the minor flap 85 is brought into contact with plate 88, which is so positioned that while the conveyor chain. 3 is moving, the plate is at rest in a plane flat with the top of the carton. As the conveyor 3 continues the minor flap 85 is folded in and down by this plate 88. The other minor flap 86 is then folded over by means of the pigtail 87 as described.

As this shaft turns, the point of the pigtail enters in back of the minor flap 86, and as the former continues its rotation, it brings the flap 86 inward and down until, upon completion of its revolution, the flap 86 is held down by means of plate 88. In order to hold flap 85 down while plate 88 is being revolved with 87, and also to help guide both flaps 85 and 86 under bracket 8, there is provided another guide 88".

After the completion of this step in the folding, the carton is moved to the next station or stop of the conveyor 3. The carton enters this station substantially as shown in Fig. 19, with the minor flaps 85 and 86 folded down and held by the flap surface 60 on the flap presser 57, and the major flap 63 lying between the member 60 and the curved surface 92. The other major flap 82 is positioned between the member 57 and the curved surface 93, which is supported on a bracket from the bed 1.

The operation of this, the third, station is the applying of a film of glue to the inside surfaces of the major flaps 63 and82 andthe outer surfaces of the minor flaps 85 and 86, by the roll 47, as described, and the folding over of the major flap 63 until it is brought into contact with the glued surfaces of 85 and 86. This is accomplished by means of the mechanism already described, viz., the fingers 64 and rotary pressing members 60 and 57 Between the third and fourth stations, the folded flaps 63, 8'5, 86 are held in position by the plate 105. The major flap 82 is then infolded at station 5 by the ejecting of the carton by the member 27 between the belts 121, 122 when, by means of the yielding idlers 125 and idlers 126 and belts, pressure is applied to the folded flaps, they are given an opportunity to dry before they are finally dropped by the conveyor belts upon the receiving table.

This invention is not limited to the precise embodiment thereof described and illustrated herein, but is more particularly pointed out in the following claims.

We claim:

1. Carton closing mechanism comprising a bed, a conveyor thereon for the cartons, upper flap folding means including a movable minor flap folder operable across the carton path, a movable major flap folder with compound motion, a plurality of carton drying and conveying members, and means to shunt the carton therebetween for conveyance and to also infold the second major flap.

2. Carton closing mechanism including a bed, a conveyor thereon for the carton, a movable helical minor fiap holder, a movable major flap holder operative in a different direction from the minor flap holder, a plurality of carton drying and conveying members and means to shunt the carton therefbietween and to also infold the second major 2i Carton closing mechanism i eluding a bed, a conveyor thereon for the carton, a

v progressively acting minor flap holder oper- 10 ative in the line of travel of the carton and having a folder plate operativein a direction reverse to that of the progressively acting flap folder, a major fla folder operative in a direction angular to t e minor flap folder, a plurality of carton drying and conveying members. J

4. Carton closing mechanism including a helical rotary minor flap folder operative progressively to fold one flap and having a folder plate operative to fold a second flap, a rotary major flap folder operative angularly relatively to said minor flap folder.

5. Carton closing mechanism including a helical rotary minor flap folder operative to fold one flap and having a folder plate operative to fold a second flap, a rotary major flap folder operative about a parallel axis as the minor flap folder and relatively angularly thereto, a plurality of carton dyring members and means to force the carton therebetween to also close the second major flap.

6. Carton closing mechanism including a helical rotary minor flap folder operative from above the flap to fold one flap and hav ing a folder plate operative to fold a second flap, a flap elevator or a major flap, a rotary major flap folder operative about an axis parallel to that of the minor flap folder and relatively angulary thereto, a plurality of carton drying members, and means to force the carton therebetween to also close the second major flap.

7. Carton closing mechanism including major flap spreading'means, a rotary minor flap folder, a rotary major flap folder, a plurality of carton drying members, all operatively connected and working successively.

8. Carton closing mechanism including a rotary minor flap folder, a rotary flap gluer, a rotary major flap folder with ribs thereon operative angularly to the minor flap folder,

a plurality of carton drying members, and means to push the carton therebetween and to also fold a second major flap.

9. Carton closing mechanism includin a rotary minor flap folder, a rotary major ap folder operative angularly to the minor flap folder, a gluer having a compound rotary motion, a major flap folder rotating uniformly with the gluer, and angularly operative relative to the minor flap folder, a plurality of carton drying members and means to deliver the carton therebetween to also close a second major flap;

10. Carton closing mechanism including a rotary minor flap folder, a rotary major flap folder operative angularly to the minor flap folder, a gluer carried by the major flap folder and having compound rotary motion, one of which is uniform with the major flap folder, a plurality of carton storing and delivering members and means to deliver the carton therebetween to also close a second major flap.

11. Carton closing mechanism includin a rotary minor flap folder, a rotary major ap folder operative angularly to the minor flap folder, a luer carried by the major flap folder an adjustable radially thereon to travel straight across a carton top and having compound rotary action, a plurality of carton drying and conveying members and means to eject the carton therebetween and to also close a second major flap.

12. Carton closing mechanism includin a rotary minor flap folder, a rotary major ap folder operative angularly to the minor flap folder, a main glue supplying roll, a regulating roll therefor yieldingly mounted and positively driven, a gluer carried by the major flap folder and adjustable radially thereon and having compound rotary motion, one of which is uniform with the major flap folder, a plurality of carton storing and delivery members and means to eject the carton therebetween and to also close a second major flap.

13. Carton closing mechanism including a rotary minor flap folder, a multi-part major flap folder whose parts are relatively adjustable and operative as a unit angularly to the minor flap folder, a gluer having a compound rotary motion also carried by and adjustable on said major flap folder to glue flaps on cartons of varying height, the major 'flap folder rotating uniformly with the gluer,

and a plurality of carton second major flap closing and delivery members and means to eject the carton therebetween.

14. Carton closing mechanism comprising a bed, a conveyor thereon for the carton, up per flap folding means including a rotary minor flap folder, a rotary major flap folder, flap supporting members effective during the gluing and flap folding steps, a rotary gluing roll having compound movement, and a plurality of traveling second major flap closing and delivering members, and means for ejecting the carton from the conveyor thereto to close a second major flap and deliver the carton.

l5. Carton closing mechanism comprising a bed, a conveyor thereon for the carton, upper flap folding means includin a rotary minor flap folder, a rotary major fl ap folder,

a rotary gluing roll positively driven by pin and slot drive and having compound movement, a glue reservoir removable for cleaning by virtue of said pin and slot driving connection, a folded flap presser with ribs and rolls on its carton pressing face, and a pluralit of traveling second major flap closmg and delivering members, and means to force the carton therebetween to close a second major flap and deliver the carton.

16. Carton closing mechanism comprising upper flap folding means including a rotary minor flap folder, a rotary major flap folder, a rotary gluing roll having compound movement, a second major flap positioning memher, a folded flap presser with ribs and V- shaped rolls on its carton pressing face, and a plurality of traveling second ma'or flap closing and delivering members an means to place the carton therebetween to close the second major fla and deliver the carton.

17. In carton c osing means a rotating, helical flap engaging member having a plate thereon lying across the path of the carton and actin to fold inwardly and downwardly the first fiap engaging it, and means for operating the helical member to cause it to fold a following flap.

helical flap engaging member having a plate thereon lying across the path of the carton 18. Carton closing mechanism comprising a, support, a carton carrier thereon, helical minor flap closing means and a flap closing plate operative in the path of travel of the carton, and major flap rotative closing means operative across said path of travel.

19. Carton closing mechanism comprising a traveling conveyor for the cartons, and a helical rotary flap folding member operative to enga e one flap and progressively fold it in the direction of travel of the carton, and rotary flap folding members operative in a path at an angle thereto.

20. Carton closing mechanism comprising a segmental flap presser, an arcuate flap presser co-axially mounted therewith and yieldingly connected thereto and provided with flap folding fingers, and means for presenting a carton to said flap presser for action.

21. A carton closing mechanism comprising a segmental flap presser, an arcuate flap pressure co-axially mounted therewith and yieldingly connected thereto and provided with flap folding fingers, and a gluing member effective on the flap in advance of the fingers.

22. Carton closing mechanism includin a rotary minor flap folder, a rotary major ap folder operative angularly to the minor flap folder, a constantly turning gluer carried by the major flap folder and adjustable radially thereon to travel out of its normal path and across a carton top and having compound rotary action, to glue a substantially horizontal flap and an angularly positioned flap in sequence, a major inclined glued flap lifting member, and a plurality of carton clamping and conveying members, and means to eject the carton therebetween for convenience and downward laying of the lifted glued major flap.

23. In carton closing means, a rotating,

CERTIFICATE OF CORRECTION.

Patent No. 1,862,346. a June, 7, 1932.

EDWARD VAN der PYL ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, line 9, claim 3, for "holder" read folder; and line 29, claim 5,'for the misspelled word "dyring" read drying; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 4th day of. October, A. D. 1932.

M. J, Moore, (Seal) Acting Commissioner of Patents.

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