US2880921A

US2880921A - Partitioned packs

Info

Publication number: US2880921A
Application number: US666156A
Authority: US
Inventors: Persson Karl Rune
Original assignee: Ahlen & Akerlund Forpacking AB
Current assignee: Ahlen & Akerlund Forpacking AB
Priority date: 1956-06-20
Filing date: 1957-06-17
Publication date: 1959-04-07
Anticipated expiration: 1976-04-07

Description

April 7, 1959 K. R. PERSSON PARTITIONED PACKS 4 Shets-Sheet 1 Filed June 17, 1957 April 7, 1959 K. R. PERSSON PARTITIONED PACKS Filed June 17, 1957 Has 4Sheets-Sheet 2 April 7,1959 K. R. PERSSON PARTITIONED PACKS 4 Sheets-Sheet 3 Filed June 17, 1957 mw um QQ v April 7, 1959 K. R. PERSSON 2,880,921

1 PARTITIONED PACKS Filed June 17, 1957 4 Sheets-Sheet 4 United States Patent PARTITIONED PACKS Karl Rune Persson, Laholmsvagen, Halmstad, Sweden,

assignor to Aktiebolaget Ahln & Akerlund Ft'irpackning, Halmstad, Sweden, a corporation of Sweden Application June 17, 1957, Serial No. 666,156 Claims priority, application Sweden June 20, 1956 6 Claims. (Cl. 229-28) The present invention relates to a partitioned pack or collapsible carton comprising side walls and end walls foldably interconnected along side edge fold lines and being at their bottom edges along bottom edge fold lines foldably connected to bottom portions which in turn are along their inner end edges foldably connected to longitudinal and transverse partition walls, said bottom portions and partition walls being adapted to be folded up between the side and end walls when last mentioned walls are folded to one of the diagonal planes extending between a pair of opposed side edge fold lines.

Such packs are usually designed so that several manual operations must be undertaken for setting up the pack into its position for use. This requires a certain time and, moreover, often involves rather complicated connecting operations which for an unaccustomed person may be difficult to carry out in the correct way.

The main object of the present invention is to provide a partitioned pack which may be set up with a single grasp and so that the pack will be then automatically partitioned. Another object is to provide partly resilient fittings of the carton which is desired when keeping eggs or similar fragile bodies.

The pack according to the invention may be varied with respect to its details in various ways within the scope of the principal construction which is substantially characterized in that the transverse partition walls are each hingedly connected with a longitudinal partition wail along a fold line substantially parallel to said side edge fold lines so that said bottom portions and said partition walls are automatically urged downwardly to their respective positions of use or upwardly between said side and said end walls, respectively, when opening or closing the frame formed by said side and said end walls.

These and other characteristic details and advantages of the invention will be more clearly disclosed in conjunction with the following description of two embodiments of the pack according to the invention shown by way of example in the accompanying drawings.

Fig. 1 shows a developed cut blank which after being folded forms the pack according to the invention. Fig. 2 shows the pack set up and seen from above. Fig. 3 shows a section along line 33 of Fig. 2, half of the pack being shown in a front view. Fig. 4 shows the pack seen from above in a position between its set-up and collapsed states. Fig. 5 shows the pack in a bottom view in its set-up state according to Fig. 2. Fig. 6 is a perspective view of the pack in its set-up state and with an end wall and a side wall omitted and the pack partly broken for the sake of clarity. Fig. 7 is a development of the blank for forming the second embodiment of pack according to the invention. Fig. 8 is a top view of the pack in its set-up posi tion, the cover and the extension flap of the left end wall beingswung up in their raised positions. Fig. 9 is a section along line 9--9 in Fig. 8, and Fig. 10 is a section along line 1010 in Fig. 8 with the cover in its closed position.

"ice

For the sake of simplicity reference is first had to the blank in Fig. 1. In this figure as well as in Figs. 2-6,

numerals

2, 4 denote the side walls of the pack and 1, 3 the end walls thereof, 5, 6, 7 and 8 bottom portions, 10, 12 longitudinal and 9, 11 transverse partition walls, respectively, connected to the bottom portions along fold lines and separating the partitions of the pack. The side wall 2 is elongated with a cover 13. The side and end walls are integrally connected with the bottom portions along

bottom fold lines

14, 15, 16 and 17, and

similar fold lines

18, 19, 20 and 21 are provided between the bottom portions and the partition walls.

The

bottom portions

6 and 8 which are opposite each other when the pack is set up, are formed substantially as isosceles trapezia which are defined by the

side edges

22, 23 and 24, 25, respectively, and the

parallel fold lines

15, 19 and 17, 21, respectively. and 21 the

bottom portions

6 and 8 extend into the

longitudinal partition walls

10 and 12, respectively, which at one side are defined by

fold lines

26 and 28, respectively. The fold lines 27 and 29 form flexible connections to the partition wall extensions formed as

end flaps

30 and 31, respectively. These end flaps have a height somewhat less than that of their partition walls, the transition being defined by an

abutment

59 and 60,

respectively. To facilitate the folding operations of the' end flapsalong the fold lines 27 and 29, respectively, as

will be described in a following section of this specificar.

tion, a

slit

32 and 33, respectively, runs from the lower edge of the longitudinal partition wall along the fold line 27 and 29, respectively. Each

longitudinal partition wall

10 and 12, respectively, is further offset a certain distance inwardly on the edge of the short side edge of the bottom portion at the fold line 19 and 21, respectively.

At the end of the

partition walls

10, 12 opposite to the

end flaps

30, 31 the partition walls are extended with

end flaps

34, 35 which are foldable along the

fold lines

26, 28 and adapted to be secured at half part of the

transverse partition walls

9 and 11, as seen from Figs. 2 and 4.

The other pair of

opposed bottom portions

5 and 7 are substantially rectangular, one

side edge

36 and 37, respectively, however being somewhat obliquely cut inwardly so that it, as seen in Figs. 2 and 4, will freely pass the

side wall

2 and 4, respectively, which is adjacent said side edge when setting up the pack. For the same reason,

corresponding

transverse partition walls

9 and 11 are.

somewhat narrower at the

fold line

18 and 20, respectively, than at their outer ends.

The

partition walls

9 and 11 are each provided with an opening 38 and 39, respectively, having about the same height as the width of the

end flaps

30, 31. The openings are defined by a

straight side edge

40 and 41, respectively, located approximately at the middle of the corresponding partition wall and by a preferably arcuate side edge 42 and 43, respectively, extending from the upper end of the straight edge and downwardly to the

fold line

18 and 20, respectively, forming the bottom edge of the opening.

The

end walls

1,3 and the side wall 4 are further provided with cut-in portions 44, 45 and 46 and the

end walls

1 and 3 are further provided with supporting flaps 47 and 48 which can be folded along fold lines 49 and 50, respectively. The cover can be folded along three

fold lines

51, 52 and 53. Moreover, at its free side edge the end wall 1 is provided with a flap 54 to be pasted and secured at the free side edge of the side wall 4 for forming the closed frame of side and end walls, the frame being foldable along

fold lines

55, 56, 57 and 58.

For assembling the blank to a folding pack all bottom portions and partition walls are swung up respectively as one piece to the corresponding side and end walls, and then end wall 1 and side wall 4 are folded along fold At the fold lines 19.

lines

56 and 58, flap 54 being secured by pasting to the edge of side wall 4. The

end flaps

34 and 35 are then also secured by pasting to that'half of the

partition wall

9 and 11, respectively, located adjacent to the

straight side edge

40 and 41, respectively. The mounting of the pack is then finished and the pack is in a flat state from which it may be set up only by opening the frame formed by the side and end walls to rectangular form with the bottom portions and partition walls in their respective positions, as shown in Figs. 2 and 3.

Through the hinged joints along the fold lines 26 and between the diagonally opposed pair of transverse and

longitudinal partition walls

9, 10 and 11, 12, respectively, the bottom portions will be automatically urged down to their respective positions shown in Fig. 3 when the side and end walls are displaced under their parallelogram-like opening movement, as illustrated in Fig. 4. At the same time the partition walls will evidently follow the downward movement of their bottom portions and be et in tlgeir partition forming positions, as seen from Figs. 2' and Upon opening the pack from its flat collapsed state,

where the walls of the diagonally opposed pair of partitionwalls rest fiat against each other, the

longitudinal partition'walls

10 and 12 will form a n increasing angle to that

transverse partition wall

9 and 11, respectively, with which they are hingedly joined, and on the parallel movement of the

partition walls

10 and 12 the same will be moved nearer to each other, the

end flaps

30, 31 of the partition walls further being simultaneously moved in a direction towards the

transverse partition walls

9 and 10. At a certain intermediate position the ends of these and

flaps

30, 31 will abut against the transverse partition walls under an acute angle so that the end flaps 30, 31 will be caused to flex somewhat and their ends seek themselves inwardly to the

joint

26 and 28, respectively, where they meet the arcuate side edges 42 and 43 of the opening 38 and 39, respectively, and project through the opening and guide against the arcuate edge, until the partition walls have reached their end positions where the

abutment edge

59 and 60, respectively, of the

longitudinal partition walls

10 and 12 will rest against the

transverse partition walls

9 and 11 at the

joint

26 and 28, respectively. I

When folding down the bottom portions the

opposed bottom portions

6, 8 are adapted to be brought to rest with their inner fold edges 19 and 21 bearing against each other and at the same time with the other pair of opposed bottom portions and 7 being folded down to test against the side edges of the

bottom portions

6, 8, as is most clearly illustrated in Fig. 5. In cooperation with the guiding of the partition walls in response to the joints 26', 28 the bottom portions will lock each other against further downward folding movement beyond a certain bottom position, as shown in Figs. 3 and 5.

The bottom portions are so constructed that in this bottom position opposed

bottom portions

5, 7 and 6, 8, respectively, will form an angle to each other, as shown in Fig. 3, so that a certain resilient effect is obtained in the bottom of the pack.

For collapsing the pack it is only necessary to fold the side and end walls together through parallel movement of the

side walls

2 and 4, whereby the bottom portions and the partition walls will return to their originalpositions between the side and end walls.

The supporting flaps 47, 48 are folded inwardly and the cover 13 in the set-up position of the pack can be swung down overthe partition walls to a resting position on. the supporting flaps.

The pack shown in Figs. 7-1 O is of the same principal construction as the pack shown in Figs. 1-6 with respect same reference numerals with the addition of an a to the.

reference numerals in Figs. 7-10, that is, 1a, 4a denote the ends walls, 2a, 3a the side walls and so on. The pack in Figs. 7-10, however, does not have the

details

27, 29, 32, 33, 44 and 45 of the embodiment in Figs. 1-6.

As will be seen from Figs. 7 and 10, the

end fiaps

30a and 31a are formed as extensions of the

partition walls

10a and 12a, respectively. At the lower edges of the end flaps they are provided each with a hook-like foot flap 61 and 62, respectively. For moving the end flap 31a to the position shown in Fig. 10, the bottom portion 5a has a wedge-like opening 63 which forms an extension of the opening 38a of the transverse partition wall 9a. The opening 38a is also wedge-like with

straight side edges

40a, 42a. The bottom portion 7a has a similar wedge-like opening 64. When setting up the pack the end flap 31a will accordingly be moved through the opening 38a, so that the foot flap 62 will abut against the edge of the narrow end of the opening 63. The foot flap then extends somewhat below the bottom portion 5a and forms a supporting foot on the underside of the pack. Furthermore, the

end flap

30a and 31a, respectively, is locked at the narrow end of the

opening

64 and 63, respectively, against movements to either side.

In order further to stabilize the pack the ends of the

partition walls

9a and 11a are provided with supporting

flaps

65, 66 and 67, 68, respectively, which extend freely outside the

fold lines

18a and 20a, so that the extended portions directed downwardly from the respective partition wall at the set-up state of the pack will be directed downwardly to the underlying bottom portion. The supporting flap 65 is shown by way of example in Fig. 9 where this flap is directed downwardly against the bottom portion 8a and is extended to the vicinity thereof. These supporting flaps may also extend down to rest against the bottom portions as for example thesupporting flaps 66, 68. The end flaps 34a and 35a of the

longitudinal partition walls

10a, 12a are also provided with such supporting

flaps

69 and 70 which are adapted to rest against the

underlying bottom portions

6a and 7a, as shown in Fig. 9.

As in the embodiment of Figs. 1-6, the end flaps 34a and 35a are pasted to the

transverse partition walls

9a and 11a, respectively. In order to ascertain correct positioning when pasting for assembling the pack the end flap 35a of the partition wall 12a is connected with the transverse partition wall 11a by means of a connecting portion 71 which is foldable along a fold line 72.

The supporting flap 66 of the partition wall 9a may in its turn be extended with a preferably foldable lock flap 73 which is adapted to cooperate with the side wall 2a when setting up the pack, so that this lock flap frictionally engages the side wall 2a to retain the pack in its set-up position.

The end walls In and 3a and the side wall 20 are furthermore provided with

shock absorbers

74, 75, 76 of the same principal design. For the sake of simplicity only the shock absorber 74 of the end wall 1a will be described in the following.

As will be seen from Fig. 7, the flaps 47a, 48a and the cover 13a form extensions of the

end walls

1a and 4a and of the side wall 2a, respectively, which are foldable along

fold lines

49a, 50a and 52a to be swung in over, the partition walls.

The portion forming the shock absorber 74 is defined by two

side edge slots

77, 78 of which slot 78 forms a vent opening, and by two

fold lines

79, 81 parallel to the fold line 49, a third fold line being disposed between the fold lines 79, .81. The line 79 is above and the

lines

80, 81 are below the fold line 49a. When the flap 47a is folded in over the end flap 31a of the partition wall 12a to the position :shown in Fig. 10, the portion 74 will be automatically folded outwardly with the intermediate line 80 and form the knee shown in Fig. 10

adjacent packs. in the same manner as the absorber 74 described above.

This lock flap 73 also serves to hold the end wall 1a in correct position when pasting.

What I claim is:

1. In a collapsible container for the storage of eggs and like articles formed from a single paper board blank having two parallel vertical side walls and two parallel vertical end walls hingedly connected to each other to form a reactangular frame, each of said side walls having a longitudinal bottom wall hingedly connected at its upper edge to the lower edge thereof, each of said end Walls having a transverse bottom wall hingedly connected at its upper edge to the lower edge thereof, the longitudinal bottom walls having longitudinal partition walls hingedly connected thereto along the bottom edges thereof and the transverse bottom walls having transverse partition walls hingedly connected thereto along the bottom edges thereof, one of said longitudinal partition walls having a projecting end fiap at one end thereof and the other of said longitudinal partition walls having a projecting end flap at the diagonally opposite end thereof, each of said transverse partition walls having an opening centrally located therein, said bottom walls and said partition walls being folded upwardly within the space defined by said rectangularly-arranged side and end walls with the end flaps of said longitudinal partition walls extending through the openings of the adjacent transverse partition walls to divide the container into six substantially equal compartments, the longitudinal partition walls being contiguous; the invention wherein each of the longitudinal partition walls has a glue flap hingedly connected thereto at the edge thereof opposite the end having the projecting end flap, said glue flap being folded about a hinge line normal to the hinge connection of said partition wall to said bottom wall and being glued to the adjacent transverse partition wall, the width of said bottom walls between opposite horizontal edges being greater than half the length of the end walls so that the bottom walls will be inclined upwardly toward the center of the container when said longitudinal partition walls come into contiguous engagement, and further wherein the longitudinal bottom walls have a trapezoidal configuration with the edges thereof connected to the side walls being longer than the edges thereof connected to said longitudinal partition walls, so that each transverse bottom wall rests on two side edges of the longitudinal bottom walls.

2. A collapsible container as defined in claim 1 wherein said transverse partition walls have supporting flaps projecting at the ends thereof adjacent the hinge connection of said partition walls to the transverse bottom walls, the lower horizontal edges of said supporting flaps being seated upon the upper surfaces of said longitudinal bottom flaps when said container is in its erected condition.

3. A collapsible container as defined in claim 2 wherein at least one of said transverse partition walls has a lock flap projecting from a vertical edge thereof into engagement with the adjacent side wall of the container for locking said container in its erected position.

4. A collapsible container as defined in claim 2 wherein at least one of the end flaps of said longitudinal partition walls is hingedly connected with the adjacent transverse partition wall.

5. A collapsible container as defined in claim 2 wherein the openings in the transverse partition walls extend into wedge-like openings in the transverse bottom wall portions, and further wherein the end flaps extending into said openings have hook-like projections at their lower edges adapted to enter the wedge-like opening of the respective bottom wall portion and to cooperate with the edge of the narrow end of said opening.

6. A collapsible container as defined in claim 5 wherein said hook-like projection forms a supporting foot on the under side of the bottom of the container when the container is erected.

Crane Oct. 12, 1948 Metzger Mar. 19, 1957