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Publication numberUS2514867 A
Publication typeGrant
Publication dateJul 11, 1950
Filing dateApr 9, 1947
Priority dateApr 9, 1947
Publication numberUS 2514867 A, US 2514867A, US-A-2514867, US2514867 A, US2514867A
InventorsHoward Stanley R, Vergobbi John G
Original AssigneePneumatic Scale Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method and apparatus for producing a package
US 2514867 A
Abstract  available in
Images(4)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

July 11, 1950 s. R. HOWARD ET AL 2,514,867

Y METHOD AND APPARATUS FOR PRODUCING A PACKAGE Filed April 9, 1947 4 Sheets-Sheet 1 12 @13 lNvENToR 5 July 11, 1950 METHOD Filed April 9, 1947 s. R. HOWARD ET AL 2,514,867

AND APPARATUS FOR PRODUCING A PACKAGE 4 Sheets-Sheet 5 INVENTORS 'Sfim/e award d ATTOENEY I July 11, 1950 s. R. HOWARD ET AL METHOD AND APPARATUS FOR PRODUCING A PACKAGE 4 Sheets-Sheet 4 INVENTORS Filed April 9, 1947 Patented July 11, 1950 2,514,867 METHOD AND APPARATUS FOR PRODUCING A PACKAGE Stanley E.- Howard, Milton; and John G. Vergobbi, Quincy, Massi, assignors to Pneumatic Scale Corporation, Limited, Quincy, corporation of Massachusetts 1 Mass, at

Application April 9, 1947, Serial No. 740,458

30 Claims.

This invention relates to a method of and apparatus for producing a ackage.

The invention has for an object to provide a novel method of and apparatus for producing a package comprising an outer shell or carton and an inner lining or bag provided with a top closure having extended folded portions and in which provision 'is made for tucking the extended portions within the carton-walls in a simpl emcient and superior manner. 1 4

With this general object in view, and such others as may hereinafter appear, the invention consists in the method of and apparatus for producing a package, andin the various structures arrangements and combinations of parts hereinafter described and particularly defined in the claims at the end of this specification.

In the drawings illustrating the present method and the preferred apparatus for practicing the same, Fig. 1 is a diagrammatic plan view of a rotary type packaging machine embodying the resent invention; Fig. 2 is a perspective view illustrating one form of container upon which the present method may be practiced; Fig. 3 is a similar view illustrating another type of container; Figs. 4 to 17 inclusive are diagrammatic views illustrating successive steps followed in the preferred method of producing the present package, the numerals l to 8 designating the containers at the correspondingly numbered stations of the packaging machine shown in Fig. 1 and, of which Figs. 4 and 5 are front elevation and plan view respectively of the container as received at station I; Fig. 6 is a front elevation of the filling station;

.the upstanding folded portion of the closure in an upright position; Fig. 12 is a side elevation similar to Fig. and illustrating a second folding device for performing a second folding operation upon the upstanding closure; Figs. 13 and 14 are front elevation and plan views respectively showing the condition of the ontainer at station 6 and illustrating astation-ary guide rail for folding the elongatedclosure flat against the top of thebag; Fig. l5 'is a. diagrammatic view of the mechanism for tucking the extended k flaps of the top closure within the carton walls; Figs. 16 and 17 arefront elevation and plan views respectively of the completed packag as discharged at station-8; Fig. 18 is a side elevation detailview of the flap folding and tucking mechanism disposed "at station I; Fig. 19 is an enlarged front elevation of a portion of the flap folding and tucking mechanism shown in Fig.

18; Fig. 20 is an enlarged plan view of the lower portion of the mechanism shown in Fig. 18 il1ustrating the elevating and adhesive applying mechanism,.as viewed from the line 20-20 of Fig. 18 with the bag removed; Fig. 21 is a detail view in front elevation of a modified form ofmechanism adapted for use upon a container of the type illustrated in Fig. 3; and, Fig. 22 is a.

.cross sectional view taken on the line 22-22 ofor carton. To this end the present method in cludes the steps of filling the container, forming a top closure for the bag having laterally extended-portions or flaps and then folding down the extended flaps and tucking them within the side walls of the carton; In accordance with the illustrated and preferred method of tucking the extended flaps within the side walls of the carton, the extended portions are first folded down over the outer surface of the carton walls.

The bag is then moved relative to the carton,- such as by elevating the bag, until the lower ends of the folded down flap are beyond the to edge of the carton, whereupon the flaps are held against the side walls of the lining bag while the bag is lowered into the carton to dispose the flaps within the side walls of the carton.-

The package thus formed, among other uses, provides a container suitable for merchandising an individual serving of a breakfast cereal such as is used in restaurantsand in which at least one end and preferably both ends of the outer carton or shell are open so that when the inner ,bag or lining is formed from transparent matenial, the contents are clearly visible to display the commodity packaged. In the completed package theinner bagmay be merely frictionally held within the outer carton for easy opening, or, provision may be made for applying a relatively small amount of adhesive to the inner surface of the carton during the time the bag is elevated so that upon lowering of the bag into the carton, the bag may be adhesively secured to the carton and also readily detachable therefrom when ready for use.

Referring now to the drawings, the present invention is herein illustrated a embodied in a rotary type packaging machine, indicated generally at II] in Fig. 1 and which is provided with an intermittently rotatable spider t2 having a plurality of container holding pockets 14 by which the containers are supported during their passage through the machine and to the various mechanisms disposed at the stations designated by the numerals I to 8 for effecting the fillin top closing and flap tucking operations to produce the present filled and closed ackages.

One form of container, indicated generally at I6, upon which the present packaging machine is designed to operate,-is illustrated in Fig. 2 and comprises an inner bag or liner I 8 having a closed bottom and open top and which may be formed from a relatively thin moisture resisting and preferably transparent material, and an outer carton 20 comprising :a rectangular tube or shell open-at both ends and which may be formed from a relatively heavy material such as carton board. As herein shown, the outercarton is closely fitted about the liningbagand is of less height than the bag so that the open nd of the liner extends beyond the top of the carton to provide material for forming the top closure.

In practice, such containers may be formed on a standard commercial type of package maker in which the inner liner or bag I8 is first formed about a mandrel or forming block, indicated at 22 and thereafter the outer carton or shell 20 is wrapped about the liner bag while the latter is supported on the mandrel. As illustrated in Fig. 2, the liner bag may be provided with an adhesively secured side seamlll and a bottom closure 26 form-ed by overlapping the extended portions against the bottom of the block and against the side walls thereof in any usual or preferred manner. The outer shell 2IIis also provided'with an adhesively secured side seam 28, as illustrated. As thus constructed, the outer shell 20 though frictionally engaged with the-linin'g bagis free to move with relation thereto so as to permit elevation of the bag whiledisposed in 'the carton during theflap tucking operation, to be hereinafter described.

Successive containers I 6 of the structure above described are supplied to 'the machine by a continuously operated conveyer 3B, the foremost container coming 'to rest against a-stop member 32 and in alignment with a pocket M as shown in Fig. 1, and, in the operation of the packaging machine I0, successive foremost containers may be inserted into successive'pockets at station I by an intermittently operated pusher, indicated at 34. The spider I2 is then intermittently rotated to present the container to station '2' where, as illustrated in Fig. 6, the container is filled in any usual or preferred manner such .as by a weighing or measuring unit "indicated at 36 arranged to discharge succe'ssive loads into successive containers presented to station '2. The containers are filled substantially up to the level of the upper edge of the outer shell-or carton.

The next step in the productionof the present filled package consists-in the formation of a top closure therefor which as herein illustrated comprises an elongated pulled out closure folded to provide laterally extended portions adapted to be folded down and tucked within the carton walls. Successive steps in the formation of the elongated top closure as performed by the illustrated apparatus are shown .in Figs. 7 to 14. inclusive, and as illustrated in Fig. '7, the first step comprises spreading the mouth portion of the bag to bring the opposed Walls together in face to face relation, and this operation may be performed at station 3 by a pair of pivotally mounted spreader-arms 38 which may be arranged to Upon of the upstanding fold or face to face seam 42 may be pressed together by pivotally mounted presser arms 40, as shown in Fig. 9. The present top closure does not necessarily require an adhesive bond between the opposed faces of the upstanding seam but when so desired adhesive may be applied to the inner faces thereof at station 3 or, if the material is of a thermoplastic nature, the presser arms may be heated to efiect a heat seal between such faces. The spreading operation above described forms laterally extended triangular end flaps 44, as illustrated in Fig. 8.

The upstanding elongated fold or seam 42 thus formed is then preferably :folded twice upon itself in the manner indicated generally .in Figs. 10, 11 and 12 in which .Fig. .10 illustrates the first fold forming device and Fig. 1-2 the second fold forming device. As illustrated in Fig. 10., a pref-erred form of device for performing the first folding operation may include :a ,pair of opposed :pivotally mounted gripper arms '56, 48 arranged to be rocked into engagement with opposed sides of the upstanding seam 42 adjacent the lower end thereof to support :the seam during the folding operation. .As herein shown, the gripper arm 48 is provided with an angular face 56 arranged to cooperate with a :pivotally mounted folding plate 52 which is arranged to be rocked to fold the extended portion .of the seam '42 against the angular .face as shown .in Fig. 10. Thereafter, the plate 52 is withdrawn while a cooperating jaw 54 pivotally carried by the arm 48 is caused to crease the fold against the angular face 59. The once-folded seam is then guided between curved and :spaced rails 56, 58 during the travel of the container to thenext station of operation in order to present :it tostation 5 in an upright position, as shown in Fig. 11. .At station 5, as shown in Fig. 12, the once folded seamlis again folded by similar mechanism, indicatedgenerally at 60 and which includes similar gripping members 62, 64 arranged to grip the lower portion of the folded seam while a folding plate 66 is rocked to fold the seam between the member '64 and a jaw 68, the latter operating to crease the twice folded seam against the member.

The'twice foldedseamthus formed is then laid dOWn flat against the top of the bag by a stationary curved guide rail 10 disposed adjacent station 6, as shown in .Fig. 13, so that when the package arrives at station I the top closure is in the condition illustrated in Fig. 14, with the triangular foldedflaps i l-extended laterally from opposed sides of the bag. At station -I, the laterally extended flaps are tucked within the side walls of the outer-cartonby the mechanism indicated generally at :12 to form the completed packageasshownin Figs. '16 and 17.

Referring now to FigsLlS, 19and-20 for a more detailed description of .the flap tucking mechar nism .12, as therein; shown,-provision is made, in-

accordance with the presentv method, for first folding down the triangular flaps 44 against the outside of the outer carton or shell 20, then elevating the inner bag I8untilthe lower ends of the flaps are raised beyond the top edges of the outer shell, andthereafter lowering the bag while holding the flapsagainst the sidewalls of the bag to dispose the, flaps within the outer carton. As

hereinv shown, the laterally extended flaps 44 are arranged to be folded down against the outside of thecarton-by a pair of spring pressed fingers I4, 'I6.which are pivotally mounted in a plunger bracket 18 carried by parallel arms 80, 82 arranged to be rocked to effect a substantially straight line vertical movement of the bracket 18. As illustrated in Fig. 18, the arms 80, 82 are pivotallymounted in a, standard 84 supported in a bracket 86 attached to the platen 88 of the machine.

Provision is made for reciprocating the plunger bracket I8 and, as herein shown, the lower parallelarm'82 forms one armof a two-armed lever, thesecond arm 90 being connected by a link 92 to one arm94 of a bell crank pivotally mounted on a shaft 08.. The second arm 98 of the bell crank carries a roller I00 arranged to cooperate with a cam I02 fast on a cam shaft I04 which latter may form a part of and be driven from the packaging machine. The roller I00 is held against its cam by a spring I05.. I

In the operation of the machine, when the plunger unit carrying the spring pressed fingers I4, I6 is lowered into operative engagement with the container the horizontally extended flaps 44 are folded downwardly over the edges of the carton' and against the outer surfaces of the side walls, as indicated in full lines in Fig. 19, and, at the end .of the stroke, the bottom of the plunger I8v engages the top of the package. As herein shown, the fingers I4, I6 are formed with outwardly curved ends I9 for engagement with the edges of the container, and, each finger is yieldingly held in engagement with its flap by a spring I06 and. is limited in its outward, pivotal movement by a headed stop pin I08 extended through an opening in the finger and adjustably secured in the bracket I8. Angular surfaces IIO formed on the plunger bracket serve to limit the movement of the fingers inwardly, V

I As illustrated in Fig. 18, provision is now made forelevating the bag I8 in the carton 20 in timed relation to the upward movement of the plunger bracket 18, so that in effect thecarton is gripped between the elevatingmember and the plunger during the elevating movement. The elevating mechanism. shown in Fig. 18 includes an elevatingplate II2 engageable with the bottom of the bagand which is carried by an arm II4 formed integrallywith and extended from a hub member H6 slidingly mounted on a vertical rod H8. The hub: member H6 is arranged to be vertically reciprocated on the rod I I8 by a cam I20 fast on the cam shaft I04 and through connections including a cooperating roller I22, carried by one arm, I24 of a bell crank pivotally mounted at 96. The second arm I26 is connected by a link I21 to an arm I28 rockingly mounted on a stud I30 carried by. the bracket 86. The arm I28 is forked at its outer end and arranged to cooperate with a swivelled slide block I32 carried by the hub member 6.. The cam roller I22 is held against its cam I2 0 by a spring I25, as illustrated.

N11111: operation, the elevating plate I I2 is caused surfaces of the carton walls, and as herein shown,

to rise into engagement with the bottom of thebag I8 during the end of the descending stroke of the plunger I8, and, thereupon both the elevator I I 2 and the plunger I8 rise together with the bag gripped therebetween. The upward movement is continued until the lower ends of the triangular flaps 44 are brought beyond the edges of thecarton 20, as illustrated in dotted lines in Fig. 19. During this time it will be understood that the carton 20 remains stationary, being held by the arms I34, I36 of the pockets I4, Thereafter, the cams I02 and I20 operate together to effect lowering of the bag I8 back into the carton 20 while the flaps 44 are held and pressed inwardly against the sides of the bag I8 by the fingers I4, I6 in order to guide the lower ends of the flaps 44 into the space between the bag I8 and the side walls of the carton 20. During the continued downward movement of the bag I8, the flaps 44 are fully projected within the carton walls and the curved ends I0 of the fingers I4, I6 cause the latter to slide over the outer walls of the carton.

20., Thereupon, the elevating member II2 is again brought back to its lowered or starting position andthe plunger I8 is rocked upwardly to its original position in readiness for another cycle of, operation upon a succeeding container intermittently moved into operative position therewith.

Provision is also made in the illustrated em bodiment of the invention for applying a daub of adhesive upon the inner surfaces of one pair of opposed side walls of the carton 20 during the time that theelevating plate II2 is in its raised position, and, as shown in Figs. 18 and 20 the adhesive applying device includes a pair of daubers I40 mounted on the ends of U-shaped rods I42, one leg I44 of each rod being pivotally mounted in extensions I46, I48 respectively from the hub member II6. Arms I50 carrying rollers I52 are mounted fast on the upper ends of the legs I44, the rollers being arranged to engage the vertical shaft or rod II8 by virtue of a spring l54 connected between the two arms I50, as clearly shown in Fig. 20. The daubers I40 are normally held in the position shown in full lines in Fig. 20 and, when in their lowered position, are arranged to rest in glue tanks I50. When in their elevated position, the daubers are arranged to be rocked outwardly in order to apply adhesive to the inner as the elevating plate I I2 approaches its extreme upward position, the rollers I52 follow a cut out portion or cam section I58 formed in the vertical rod II8 to effect movement of the daubers I40 against the carton walls, as shown in dotted lines in Fig 20, and conversely, upon lowering of the elevating unit, the daubers I40 are rocked out of engagement with the carton walls. Thereafter, upon lowering of the bag I8 to its fully seated position in the carton 20, the bag and carton are adhesively united at the relatively small daubed areas to prevent separation of the bag and carton during handling, but which may be readily detached when the container is to be opened for use.

Referring now to Figs. 21 and 22, as therein shown, a modified form of the flap tucking mechanism is illustrated which is adapted for operation upon a container of the type illustrated in 7 I Fig. 3. This container, indicated generally at I60 comprises an inner lining bag I62 and an outer carton I64, preferably comprising a relatively heavy paper such as kraft paper and which is provided with a closed bottom, thus preventing 7, access through the bottom of the container for? elevating the inner bag. The modified "form of flap tucking mechanism indicated generally at I66, comprises a-suction pad I63 mounted to be rocked into engagement with the top of the bag and to lift the bag I62 out of the carton I64. As herein shown, the suction pad IE8 is provided with a suction chamber I10 having a connection I12 communicating with any usual or preferredsource of suction, not shown, and is arranged to be'raised and lowered into and out of operative engagement with the bag I62 by the :parallel arm connections 80, 82 in th manner above described. Thespring pressed fingers I4, F6 are carried by the suction pad I68 and are likewise operative in the manner above described. I

In the operation Of the modified form of-elevating mechanism, the pad IE8 is first lowered to fold the laterally extended flaps 44 down and to present the suction pad I68 into engagement with the top of the bag I62. Thereupon, suction is applied and the unit is raised to efiect lifting of the bag I62 outof the outer carton I64 a distance sufficient to free the flaps M from the carton walls. Thereupon, the pad I68 is again lowered to push the bag I62 back down into the carton I64 while the fingers '14, It guide the flaps 44 within the side walls thereof. Thereafter, the suction may be discontinued and the pad I 68 again raised to its starting position in readiness for another cycle of operation.

Although in practice, as above described, it is preferred to fold the laterally extended flaps M of the lining bag I8 over the edges of the side walls of the outer carton prior to elevating the bag with relation to the carton, it is not desired 'to limit the invention in this respect. For example, in the operation of thepresent apparatus, the lining bag may-be elevated by the member II2 prior to folding down the flaps, and the flaps 44 then folded down against'the exposed body portion of the lining bag I 8 by the spring fingers 14,16 either during the elevating operation or after the bag I8 has been elevated to its maximum position. Thereafter, the *fia-ps 44 may be held againstthe body portion of the bag during the lowering operation toinsert'the flaps 4 between the walls of the inner and outer containers as described.

A modification-of the adhesive applying-device,

as herein illustrated, see Fig. 18, may comprise a pair of glue daubers I86 arranged to apply adhesive to the exposed body portion of the bag when in its elevated position whereby upon lowering of the bag into the carton the-latter w'ill become adhesively secured to the bag.

As above described, in the formation of the present'package, the bottom closure 26" of the lining bag may-be formed by overlapping the portions extending beyond the block against the bottom of the block and against the'side walls thereof as illustrated in Figs. 2 "and 3. In practice, such an end closure may be formed by folding and adhesively securing in overlapping relation two opposed extended portions against the bottom ofthe block-22, this operation forming two opposed laterally extended triangular flaps I82 which may be folded against the-side wallstof-the block," as illustrated, thlls presenting a neat smooth end wall not obscured by the triangular flaps. Thereafter in the formationof the package the outer carton or. sleeve ZIlmaybe formed about the lining bag to retain the flaps I82' in their' closed position between the walls of the lining'bag and outer sleeve. Thus' in-th e -completed "container, as shown in-Fig: -16,-'-both" the" amps-t top and bottomclosure flaps 44,182 .ar retaind' within the side walls of the sleeve'20 to prevent the folded closure from opening up and to present a neat smooth end fold at both ends not obscured by the-flaps' and through which'the contents of the container are visible when the lining bag comprises atransparent material.

Provision is also made in the preferred .embodiment of the invention-for holding the twice folded elongated seam, herein indicated at 45,

fiat against the top of the bag during the movement of the bag from under the rail Ill adjacent station 6, into station "I. In practice it was found thatthe folded seam 45 tended to spring up after it left the rail'lll and to interfere with the end flap folding andtucking mechanism I2. Asshown in Fig. 18, in order to hold the seam45 flat ,against the top of the bag during its-.advancement into station I, a movable rail 20!] may be provided which is arranged to be rocked into operative position during advancement of th bag and to be rocked out of the '.way during descent and operation of the endflap folding and tucking mechanism F2. The movable rail 20!! is herein illustrated as being carried by a rocker-arm 202 pivotally mounted at 204 and is arranged to be rocked into and out of operative position by a camZlJG fast on the camshaft I04, and through connections including a cam roll. 208 cooperating with the cam 266. The cam roll is carriedby one arm 2I0 of a bell crank pivotallymounted at 96, the other arm 2I2 being connected by a rod 2M to a bell crank 2l6 pivotally mounted at2l8 which in turn is connected to the rocker arm :202 by a'rod220.

While the preferred embodiment of .the invention-and a modification thereof have been herein illustrated and described, it will be understood that the invention maybe embodied .in other forms within the scope of the following claims.

Having thus described the invention, what is claimed is:

1. In a packaging machine, in combination, means for supportinga filled containensaid container having an inner bag and outer container, the mouth portion of said bag having a top closure provided with lateral extensions, and means for inserting said extensions within the container walls comprising means for first folding the extensions against the outside of the container, means for lifting the bag out of the container a distance sufficient to free the extensions from the container, and means for thereafter moving the bag back into the container While holding the extensions against the sides of the bag to dispose the extensions'within the container Walls.

2. In a packaging machine, in combination, means for supporting a filled container, said container having an inner bag and an outer carton, themouth portion of said bag having a top closure provided with laterally extended flaps, and means for tucking said -flaps within the carton walls comprising means forfirst folding'th flaps against the outside of the carton, means for elevating the'bag out of the carton a distance sufficient to free thefla-ps from the carton, said folding means being movable with said bag and operative to hold the flaps against the sides of the bag, and means for thereafter lowering the bag into the carton while holding the flaps against the sides of the bag to dispose the flaps within the carton walls.

3. In a packaging machine, in combination, means for supporting a filled container, said container having an inner-bag-andan outer car-ton,

walls comprising means for first folding the flaps [against the outside "of the carton, means for elevating the bag out of the carton adistance sufficient to free the flaps from the carton, said folding means being movable with said bag and operative to hold the flaps against the sides of the bag, and means for thereafter lowering the bag into the carton while holdingzthe flaps *against'the sides of the bag to dispose the flaps within thecarton walls, and means for applying adhesive against the inner surfaces of the cartonside walls during the time'thebag isin'itselevated posit on whereby to'adhesively join the I "carton'to' the'bag upon lowering of the latterinto "the carton. I i i 4. Inca packaging machine, in combination, fmeans for supporting a filled container, saidcontainerhaving an inner bag and an outer carton,

fthe mouth portion of said bag having a top'clovsure provided with laterally extended'flaps', and "means for'tucking said flaps withinthe carton walls comprising means including a pair of spring fingers for first holding the flaps against the .out's deiof the carton, means'for elevating the 'bag out of the carton adistance sufficient to free the flaps from the carton, said spring fingers being movable with said bag and operative to hold the flaps against thesides of the bag, and means for thereafter lowering the bag into the carton while holding the fiapsaga nst the sides of the jbag to dispose the flaps within the carton walls. In a packaging" machine, in combination,

means for supportinga filled containehsaid container having an inner bag and an outer carton,

' the mouthportionof said bag havinga' topolosure provided with laterally extended flaps, and

means for tucking said flaps within the carton walls comprising means includ ng a pa r 'of spring fingers for first folding the flaps against the outside of the carton, an elevator engageable with the bottom of the bag for'lifting the bag out of the carton a distance sufiicient to free the flaps from 'thecarton, said spring fingers being movable with said bag and operative to hold the flaps against the sides of the bag, and means for thereafter lowering the bag into the carton while holding the flaps against the sides of the bag to dis-' 'pose the flaps within the carton walls".

6. In a packaging machine, in combination,

"means for supporting a filled container, said container comprising an inner bag and an outer carton open at both ends, the mouth portion 'of said bag having a top closure provided with laterally "extended fiapaand means for tucking said fiaps within the carton walls comprising a pair of spring ffinge'rs foryfirst! folding the flaps against the 'outsi'de'of the carton, an elevator engageable with the bottom of'the bag for lifting the bag but of the carton a] distance sufilcient to bringthe'lower ends of the fiapsbeyond the upper edges ofth'e carton, said spring fingers being movable with the bag and operative to hold the flaps against "erally extended flaps, and means for tucking said flaps within the carton walls comprising a pair of spring fingersfor first folding the flaps against the outside of the carton, an elevator engageable with the bottom of the bag for lifting the bag out of the carton a distance sufficient to bring the lower ends of the flaps beyond the upper edges of the carton, said spring fingers being movable with the bag and operative to hold the flaps against the sides .of the bag, and a plunger engageable with the top of the bag for pushing the bag back into the carton, said spring fingers being operative to guide the lower ends of the flaps inside the carton walls during the lowering operation, said elevator being arranged to descend in'timed relation to the operation of said pusher to effect gripping of the bag therebetween during the lowering'operation.

-8. In a packaging machine, in combination, means for supporting a filled container, said container having an inner bag and an outer carton, the mouth portion of said bag having a top closure provided with laterally extended flaps, and means for tucking said flaps within the carton walls comprising means including a pair of spring fingers for first folding the flaps against the outside of the carton, means for elevating the bag out of the carton a distance sufficient to free the flaps from the carton, said spring fingers being movable with said bag and operative to hold the flaps against thesides of the bag, and means for thereafter lowering the bag into the carton, said spring fingers being operative to guide the lower ends of the flaps inside the carton walls during the lowering operation and to then slide over the outside of the carton walls during the remainder of the lowering operation.

9. In a packaging machine, in combination, means for supporting a filled container, said container having an inner bag and an outer carton,

the mouth portion of said bag having a top closure provided with laterally extended flaps, and means i for tucking said flaps within the carton walls coma suction pad engageable with the top of the bag for lifting the same out of the carton a distance sufficient to free the flaps from the carton, said spring fingers being movable with the bag and operative to hold the flaps against the sides of the bag, said suction pad being operative to then lower the bag back into the carton while the spring fingers guide the flaps within the carton walls. a i

10. Ina packaging machine, in combination, means for supporting a container having an inner bag and an outer carton, means for filling the container, means for forming a top closure for the bag,said top closure being provided with lateral extensions, and means for inserting said extensions within the carton walls comprising means for first folding theextensions against the outside of the carton, means for lifting the bag out of the cartona distance sufficient to free the extensions from the carton, and means for thereafter moving the bag back into the carton while holding the extensions against the sides of the bag to dispose the extensions within the carton walls.

11. In a packaging machine, in combination, means for supporting a, container having an inner bag and an outer carton, means for filling the contaier, means for forming a top closure for the bag, said top. closure being provided with lateral exten- "sions, and means for inserting said extensions within the'carto'n walls comprising means for first am gos? foldiiig'thc' extensions agairiSt-theollts'ide of the canon, means for lifting' thebag out of the car?- ton a distance suflicien't to free the extensions from the carton, andm'e'ans for thereafter movilig the bag back into thecartoh' While holding the extensions against thesides ofth'e bag to dis pose the extensions withintli'e carton walls; and means for applying adhesive against the inner siiriaces of the carton sidewalls during the time the bag is' in'itsraise'd position whereby to adhesi'vly' join the carton to=thebag upon lowering of'the latter into the'bag.

l2. Iii a packaging machine, in combination, means for supporting'a-container having an inner .bag and an'outer carton; nieahsfor filling the container, nieansfor forming a top closure for the bag, saidtop'closur'e' being provided with lateral extensions, and means for inserting said extensions' within the carton walls comprising means for first folding the extensions against the out-,

side of the carton, means engageable with the bottom of the bag for lifting the bag out of the carton a distance sufficient-to free the extensions from the carton, and 'm'eansfor thereafter moving the-bag ba'ck into the carton'while holding the extensions against the sides of the bag to dispose the extensions within the carton walls;

13. In a packaging machine, in combination,

means forsuppor'ting a container having an inner bag and an outer carton", means for fillin the container, means for farminga top closure for thebag, said top closure being provided with lateral extensions; and means for inserting said extensions within the carton walls comprising means for first folding the extensions against the.

outside of the carton; suction operated means engageable with the top of the bag for lifting the bag out of the carton a distance sufficient to free the extensions from the carton, and means for thereafter moving the" tag back into the carton While holding the extensions agaihstthe sides of the bag to dispose the extensions within' the'cartori wens.

14; In a packaging niachine in combination, means for supporting a fille" container, said contamer having an inner means an outer carton, the mouth portion of said bagriaviiiga top sure provi ed with lateral extensions, and means for inserting said extensions within the carton wane comprising means far first foldin'g the 'e'xte'nr signs-against the outside or the carton, means for lifting the bag out of the carbon a distance si'ifiiclient to bring the lower ends of the extensions abovethe upper edges of the carton, and means for thereafter lowering the bag'bacli'irito' the carton, said io'l'din'g means" beifig in table with the bag and operative to apply pressure to hold the extensions against the sides of the bag and to uide the lower ends of the extensions within the car ron waus during the lowering operation.

15. In the method of producing a package from a closed and filled container of the type having an oiiter carton and an innrlih ing tag provided with a mouth closure ha mg lateral extensions projecting beyond the series, the steps" comprising fol'd-ii ig the extensions against the sides of the carton, elevating the bag 61117 of the carton a distance surfieiefit to nee the extensions from the carton, and thereafter lowering the bag back into the carton whue holding the extensions against the sides arthe bag to' dispose the extensions within the same walls.

s. The steps in the method or producing a package which comprise forming a closed and filled container of the type having an outer carton and: an inner lining bag provided with a mouth closure having laterally extended flaps, folding theflap's' downwardly against the sides of the" carton, lifting the bag out of the carton a distance sufficient to bring the lower ends of the flaps" beyond the upper edges of the carton and thereafter lowering the bag back into the carton while: holding'the flaps against the sides of the bag to -guide the-lower ends of the flaps inside the cartonwalls'.

17. The steps inthe method of producing a package which comprise forming a closed and fille d container of the type having an outer carton and an inner" lining bag provided'with a mouth closure having" laterally extended flaps; folding the 'fia'ps downwardly' against the sides of the carton, lifting'th'e bag out of the carton a distance sufficient to bring the lower ends of the flapsbeyo'nd theupper edges" of the cartomapplying adhesive' to the inner surfaces of the carton during the time the bag 'is-elevated whereby to-adhesively secure the carton to the bag upon lowering of the latter into the carton,- and thereafter lowering the bag back into the carton while holding the flaps-against'the sid'esof the-bag to guide the lower ends of the flaps inside'the carton walls;

18; The steps in the method of producing a package wh'ich comprise providing a filled containe'r of the type having an" oiiter cartonand an ihn erlining bag, forming an elongated top closure for the mouthporti'on of the bag, said top closurehavinglaterally extendedtriangular flaps, folding the fla s downwardly against the sides of the carton, lifting the bag out of the carton a' distance sufiicient-to bring the lower ends of the flaps beyond the upper edges of the carton, and thereafter lowering the bag back into the carton while holding the flaps against the sides or the bag to guide the lower ends of the flaps inside thecarto'n walls.-

19. The steps in the method of producing a package which comprise providing a container of the type having'anouter cartonand an inner lining bag, filling the container, forming an elongated top closure for the mouth portion of the bag, said top closure having laterally extended triangular flaps; folding the flaps downwardly against the sides of the carton, lifting the bag out of the carton a distance sufficient to bring the lower ends of the flaps beyond the upper edges of the carton, and thereafter lowering the bag hack into the carton while holding the flaps against the sides of the bag toguide the lower ends: of the flaps inside th'e'carton' walls.

20. The steps in the method of producing a package which comprise providing a container of the type having an outer carton and an inner lining bag, filling'the container,- forming an elongated top closure forthe mouth portion of the bag, said top closure having laterally extended triangular flaps-,- folding the flaps downwardly against the sides of the carton, lifting the bag out of the carton a distance sufficient to bring the lower ends of the flaps beyond the upper edges of the carton, applying adhesive to the inner surfaces ofthe carton during the time the bag is elevated whereby to adhesively join the carton to the bag upon lowering of the latter into the carton, and thereafter lowering the bag back into the carton while holding the flaps against the sides of the bag to guide the lower ends of the flaps inside the carton walls.

21. In a pack-aging machine, in combination, means for supporting a filled container of the type comprising an-inner bag and an outer connarrate tainer. means for relatively moving the outer and inner containers to expose a substantial portion 'of the body of the inner bag, means for folding a portion of the mouth of the inner bag against the exposed body portion thereof, means for again relatively moving the inner bag and outer container to return the inner bag to its position within the outer container while holding the aforesaid portion of the mouth of the inner bag against the body thereof to dispose such portion within the container walls.

22. In the method of producing a package, the steps comprising operatively supporting a filled container having an outer carton and a filled inner'lining bag disposed therein with the mouth of the bag projecting above the top of the carton, relatively moving the outer container and inner bag to expose a substantial portion of the body thereof above the top of the carton, folding a portion of'the mouth of the bag against a side of the inner bag and relatively moving the carton and bag to restore the bag within the carton while holding the folded portion of the mouth of the bag against the bag to dispose the same within the carton walls.

23. In a packaging machine, in combination, means for supporting a filled package, said package having an inner and an outer container, the mouth portion of said inner container having a top closure provided with lateral extensions, means for moving the inner container with relation to the outer container a distance sufiicient to expose a substantial portion of the side walls of the inner container, means for folding said lateral extensions against the thus exposed side walls, and means for thereafter returning the inner container to within the outer container while said folding means retains the extensions against said side walls to dispose the extensions between the side walls of the inner and outer containers.

24. In a packaging machine, in combination, means for supporting a filled container having an inner bag and an outer carton, means for forming a top closure for the bag of the type provided with lateral extensions, and means for inserting said extensions within the carton walls comprising means for moving the bag from the carton a distance suflicient to free the extensions from the carton, and means for thereafter mov- I ing the bag back into the carton while holding the extensions against the sides of the bag to dis pose the extensions within the carton walls.

25. The steps in the method of producing a package which comprise providing a filled container of the type having an outer carton and an inner lining bag, forming an elongated top closure for the mouth portion of the bag, said top closure having laterally extended triangular flaps, folding the flaps against the sides of the carton, moving the bag out of the carton a distance sufficient to bring the ends of the flaps beyond the upper edges of the carton, and thereafter returning the bag to within the carton while holding the flaps against the sides of the bag to guide the ends of the flaps inside the carton walls.

26. In a packaging machine, in combination, means for supporting a filled container of the type comprising an inner bag and'an outer container, means for relatively moving the outer and inner containers to expose a substantial portion of the body of the inner bag, means for folding a portion of the mouth of the inner bag against the exposed body portion thereof, means for '14 again relatively moving theinner bag and outer container toreturn the inner bag to its position within the outer container While holding the aforesaid portion of the mouth of the inner bag against the body thereof to dispose such portion within the container walls, and means for applying adhesive to portionsof said exposed body portion priorfto returning the same within the outer'container whereby. to adhesively secure the outer container to the bag upon return of the inner bag to its position within the outer container.

27. In the method of producing a package, the steps comprising forming a bag having a bottom closure provided with laterally extended portions, folding the lateral extensions against the sides of the bag, then forming a sleeve about the bag to dispose said bottom closure portions between the side walls of the bag and the sleeve, filling the package, forming an elongated top closure for the mouth of the bag, said top closure having laterally extended portions, relatively moving the bag and the sleeve to expose a substantial portion of the body of the bag above the top of the sleeve, folding said laterally extended mouth portions against the sides of the bag, and relatively moving the sleeve and bag to restore the bag within the sleeve while holding the folded portions of the mouth against the bag to dispose the same within the sleeve walls.

28. In the method of producing a package, the steps comprising wrapping a blank of lining material about a block to form a bag having a bottom closure provided with laterally extended portions, folding the lateral extensions against the sides of the bag, then forming sleeve about the bag while disposed on the block to dispose the bottom closure portions between the side walls of the bag and the sleeve, removing the package from the block, filling the package, forming an elongated top closure for the mouth of the has. said top closure having laterally extended portions, moving the lining bag out of the carton a distance sufficient to free the extended mouth portions from the sleeve, and thereafter returning the bag to Within the sleeve while holding the extended mouth portions against the sides of'the bag to dispose the same within the sleeve walls.

29. In a packaging machine, in combination, means for supporting a filled container having an inner bag and an outer carton, means for forming a folded top closure for the bag, said folded top closure being provided with lateral extensions, means for folding said extensions against the sides of the bag and for inserting the folded extensions within the container walls, and means movable into and out of engagement with the top of the bag for maintaining said folded top closure in its folded condition prior to the extension inserting operation.

30. In. a packaging machine, in combination, means for supporting a container having an inner bag and an outer carton, means for filling the container, means for forming a folded top closure for the bag, said top closure being provided with lateralextensions, means for inserting said extensions within the carton walls comprising means for folding the extensions against the outside of the carton, means for lifting the bag out of the carton a distance sufiicient to free the extensions from the carton, and means for thereafter moving the bag back into the carton while holding the extensions against the sides of the bag to dispose the extensions within the carton walls, said top closure forming means and said ameoe 15 .16 extension inser ing; means being disposed at: ditg- Y I REFERENCES. CITED ferent stations, to which the containers; are moved, and ev plate movable into and out Of; op- The following eferences, re of record in the erative position to maintain said folded top 1319- Of. this Patent! closure in its folded condition during movement ofthe container. from the closure forming station UNITED STATES PATENTS tothe. extension inserting station. Number Name Date STANLEY R. HOWARD. 1,640 316 Gangler Aug. 23; 1927 JOHN- G. VERGOBBL

Patent Citations
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US1640316 *Jun 30, 1925Aug 23, 1927Firm Fr Hesser MaschinenfabrikClosing bags
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2598135 *Nov 26, 1949May 27, 1952Package Machinery CoCarton closing and flap tucking machine
US2902805 *Mar 6, 1958Sep 8, 1959Sperry Rand CorpBag closer and sealer
US2952960 *Mar 29, 1956Sep 20, 1960J L Ferguson CompanyPackaging machine
US3270486 *Mar 6, 1963Sep 6, 1966Molins Organisation LtdApparatus for packing articles of rectangular block shape in boxes having separate lids
US3442061 *Sep 10, 1965May 6, 1969Hesser Ag MaschfMethod of producing filled and sealed packages
US3516336 *Nov 13, 1967Jun 23, 1970A C M A Azionaria CostruzioniAutomatic packaging machine
US3772121 *Jun 15, 1971Nov 13, 1973Hoerner Waldorf CorpGlue applying method
US4287703 *Nov 21, 1979Sep 8, 1981Hauni-Werke Korber & Co. KgMethod and apparatus for filling and sealing containers
US5369933 *Apr 1, 1993Dec 6, 1994Tetra Alfa Holdings S.A.Apparatus for folding in the bottom of a cardboard pack
US5890348 *Sep 28, 1994Apr 6, 1999Buhler AgMethod and apparatus for the automatic closing of transport bags
US5957172 *Jan 6, 1998Sep 28, 1999Degreef; Roger W.Automated mobile sandbag unit
US6662532 *Feb 7, 2000Dec 16, 2003Alberta Sunflower Seeds, Ltd.Bag filling apparatus and method
DE968658C *Nov 14, 1951Mar 13, 1958Otto HoefligerVerfahren zum maschinellen Verschliessen von aus einer duennen Folie bestehenden Beuteln
DE3805050A1 *Feb 18, 1988Oct 13, 1988Nagema Veb KDevice for pre-folding the bag closure in packing machines
EP0567769A1 *Mar 21, 1993Nov 3, 1993Tetra Laval Holdings & Finance SADevice for folding in the bottom-flaps of a packaging carton
Classifications
U.S. Classification53/449, 53/373.3, 53/375.7, 53/175, 53/373.6, 141/314
International ClassificationB65B7/16, B65B7/18
Cooperative ClassificationB65B7/18
European ClassificationB65B7/18