US2764336A

US2764336A - Container structure

Info

Publication number: US2764336A
Application number: US417574A
Authority: US
Inventors: Roger L White
Original assignee: Lawrence Paper Co
Current assignee: Lawrence Paper Co
Priority date: 1954-03-22
Filing date: 1954-03-22
Publication date: 1956-09-25
Anticipated expiration: 1973-09-25

Description

p 25, 1956 R. L. WHITE 2,764,336

CONTAINER STRUCTURE Filed March 22, 1954 3 S heets-Sheez 1 7\ )30 1'23 0 r 5a 37 /29 0 o v 4/ 39 o o o 8 0 I J Z8 26 J3 25 #8 v K. 27 H25 Y 4 w o o o o o o o o o 55 o o 0 "6 o 3 J I 0 y q /5 5- 0 36 o O 33 0 o o q o o o 0 4 ll INVENTOR.

24 Roger L. Whife.

g 7 l 1 l k z 42 Z2} M 42 ATTORNEYS.

Sept. 25, 1956 R. L. WHITE CONTAINER STRUCTURE 3 Sheets-Sheer 2 Filed March 22. 1954 m m m m Roger L. WhHe.

ATTORNEYS.

Sept. 25, 1956 R; WHITE 7 2,764,336

CONTAINER STRUCTURE Filed March 22, 1954 a Sheets Sheet 3 I ,7 IINVENTOR.

Roger L. Wh/fe.

BY J A TTORME Y5.

United States Patent CONTAINER STRUCTURE Roger L. White, Lawrence, Kans., assignor to The Lawrence Paper Company, Lawrence, Kans., a corporation of Kansas 2 Application March 22, 1954, Serial No. 417,574

4 Claims. 01. 229-36) This invention relates to containers such as cartons or boxes and more particularly to a container constructed of corrugated fiber and like board for shipment of meat and other heavy products, and has for its principal object to provide a container and integral closure therefor formed from a single blank and assembled into a multiple wall structure without the use of stitching, tape or like fasteners.

Further objects of the present invention are to provide a novel container and closure formed from a single sheet of fiberboard which, when assembled, forms a structure of increased strength for stacking and increased end and side compression as well as corner strength without materially increasing the cost of the container or the material required in its construction; to provide a container with an integral cover and interengaging parts holding "ice upwardly extending end walls 4 and and

side walls

6 and 7, the blank 2 being suitably scored or creasedas at 8 to provide fold line hinge connections which. facilitate the upward bending of the side and end walls along same together in a rigid condition; to provide a container formed of a single sheet of material which when folded to erected condition provides substantially triple thickness in the side walls, double thickness in the end and bottom walls, single thickness cover and flanges on selected upper edges of said walls for added rigidity thereof; to provide locking tabs that are cut from various .wall portions without increasing the size of the necessary blank; and to provide a container and integral closure that may be shipped knocked down and erected at the point of use, that is economical to manufacture with substantially no waste of material, yet providing a very strong structure which resists crushing and is adapted for shipment of meats and other heavy products without the use of wood and like reinforcing.

In accomplishing these and other objects of the present invention I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. l is a perspective view of a closed container constructed in accordance with the present invention.

Fig. 2 is a plan view of a blank from which the con tainer is formed.

Fig. 3 is a perspective view of the container in partially erected condition.

Fig. 4 is a perspective view of the container with the rear wall structure being erected.

Fig. 5 is a longitudinal sectional view through the erected container. 1

Fig. 6 is a transverse sectional view through the container on the line 66, Fig. 5.

Fig. 7 is an enlarged partial perspective view taken on the line 7-7, Fig. 5, showing the rear side lock with the locking tab disengaged from the cooperating portions of the container.

Fig. 8 is an enlarged partial perspective view similar to Fig. 7 with the rear side lock in operative position.

Referring more in detail to the drawings:

ll designates a container preferably formed from a single blank 2 of fiber or like board, of a type which tends to retain its strength and stiffness while moistor wet. The container has a bottom wall 3 provided with .of the container.'.

the proper lines. The end walls 4 and 5 each have

side flaps

9 and 10 that fold on score lines orcreases 11 adjacent to the corners of the container whereby said side flaps overlap the

side walls

6 and 7.. The side flaps 9 are positionedinside of the front side wall 6 with each of said side flaps 9 preferably slightly less than half the length of the side wall 6. The side flaps 10 are positioned inside of the rear side wall 7 and in the illustrated structure said side flaps 10 are approximately threefourths the length of the side wall 7 whereby the inner portions of the flaps 10 overlap to provide a double thickness in the overlapped portion. 'Each of the side flaps 10 is of a length substantially equal to the combined height of the side wall 7 and width of the cover 12 and flap 13 on said cover so there is no waste of fiberboard at that end of the blank.

A front side wall or inner liner 14 extends from the front side wall 6 and is adapted to fold on a double score line or hinge connection 15 adjacent the upper edge of said side wall 6 whereby the side inner wall14 folds over the side wall 6 and engages the inner surfaces of the side flaps 9. A bottominner liner 16 extends from the'front side inner liner or wall 14 on the opposite edge thereof from the side wall 6, the bottom liner being of such size as to overlie and cover the'bottom wall when the container is folded as illustrated in Figs. 3 and 4; The bottom liner folds relative to the side inner. wall or liner 14 .on a score line or crease'17.

End liners

18 and 19 fold upwardly from the ends of the bottom liner 16 on score or

crease lines

20 and 21 whereby the

end liners

18 and 19 are substantially coextensive with the end walls 4 and 5 respectively and lie inside of andsubstantially engage said end walls to provide a double thickness at the ends The bottom liner 16 cooperates with thebotto'rnwall 3 to provide a. double thickness at the bottom 'of,the container. The side edge 22 of the bottom liner 16 opposite from the side inner wall or liner 14 engages the inner surface of the adjacent side flap 10 and holds said side flaps against the side wall 7. The side flaps 10 and end walls 4 and 5- have inturnedflanges 23 on the upper edges to stiffen same. The

end liners

18 and 19 have handhold openings 24 and the end walls 4 and 5 have registering openings 25 formed by U-shaped cuts 26 which form tongues 27 extending from score lines '28 whereby said tongues are folded inwardly through the openings 24 and then upwardly to give greater area for gripping the container-in lifting same.

Ventilation openings 29 are arranged in the side walls, side liners and sideflaps and other walls and liners as desired whereby said openings register when the container is assembled for circulation of air through the container as when meat or the like is frozen in the containen. 1

V The cover 12 extends from the upper edge of the side wall 7 and folds on a score line 30 to overlie the top edges of the front and ends of the container. The flange 13 is on the opposite side of the cover 12 from the side wall 7 and folds on a score line 31 downwardly exteriorly of the front side wall 6. The flange 13 has spaced longitudinal slots 32 adjacent the score line 31 for receiving tongues 33 that are formed by U-shaped cuts 34 in the front side wall 6 and front side liner 14. The tongue 33 extends upwardly from score lines 35 in the side wall 6exteriorly of the flange 13 and the score lines 15 extend transversely of the tongues whereby the upperportion 36 of the tongues is bent inwardly and inserted into the'slots 32. The upper portion 36 of the tongues is preferably slightly wider than the slots are long to provide a lockingengagement that tends to hold the tongues in the slots.

Locking tongues or tabs 37 are formed in each of the side'fiapslt) and extend longitudinally thereof from the score lines 11. Thetongues or tabs 37 are preferably midway the height of the side flaps and are formed by 'U-shaped cuts '38 and have vertical score lines 39 across said tabs substantially midway the length thereof. Vertical slots 40 are arranged in the side wall 7 and spaced from the-end edges thereof a distance corresponding to the spacing between the

score lines

11 and 39 whereby the, tongues or tabs '37 are folded exteriorly of the side wall 7, inserted into the slots 40 and the end portion 41 of said tabs turned on the score lines 39 toward the adjacent end walls. The end portions 41 of the tongues or tabs lie in the cutout in the side flaps formed by the cutting of the tabs 37 and the free ends of said end portions 41 extend between the side edge 4-2 of the end liners and the side wall 7. This engagement holds the tabs in locking position.

The container may be shipped flat to any desired point of use. 'Then the container is erected as illustrated in Figs. 3 and 4. The end walls 4 and 5 are turned upwardly relative to the bottom wall 6 on the score lines 8. The side flaps 9 and 10 are then folded inwardly on the score lines 11, the locking tabs being pushed from the U-shaped cuts 38 whereby said tabs extend outwardly from the end walls 4 and 5. The front side wall 6 is then turned upwardly into engagement with the outer surfaces of the side flaps 9. The tongues 33 are then pushed from the cut portions so they remain upstanding and the front side inner wall or liner folded inwardly on the fold lines to extend downwardly in engagement with the inner surfaces of the respective side flaps 9 and simultaneously the bottom liner 16 is folded on the score line 17 and the

end liners

18 and 19 folded on the

score lines

20 and 21 whereby the bottom liner overlies the bottom wall 3 and the

end liners

18 and 19 lie on the inside of and substantially engage L the inner surfaces of the end walls 4 and 5. This positions the edge 22 of the bottom liner in engagement with' the inner surface of a side flap adjacent the bottom thereof to prevent inward swinging thereof.

'inserted through the slots 40 in the rear side wall 7,

and folded on the score lines 39 whereby the free ends of said end portions 41 lie in the cutouts of the side flaps 10 with said free ends positioned between the adjaccnt edges 42 of the

end liners

18 and 19 and the side wall 7 as illustrated in Fig. 8. This arrangement of the locking tabs cooperates with the engagement of the bottom liner. and theside flaps 10 to hold said side flaps and the wall 7 in erected position.

The container is then a structure having substantially triple thickness in the side walls and double thickness in the end and bottom walls and is ready to receive meat or other products adapted to be placed in the container. After the products are placed in the container the cover '12 is .folded on its score line 30 to overlie the top of the container and the flange 13 turned downwardly exteriorly of and in engagement with the side wall 6, said flange 13 being .inwardly of the locking tongues 33.

.The portion 36 of the locking tongues is then inserted shipped or stored in flat condition either before or after Also during use the sides and ends cooperate to add vertical strength to the entire structure whereby it is very strong and adapted to contain meat or other heavy products without the use of wood strips or like reinforcing and yet may be stacked without danger of crushing the sides and end walls of the container.

It is believed obvious that I have provided a strong container structure of great strength that is economical to manufacture with substantially no waste of material and that can be easily assembled and used without auxiliary fastening means such as staples, tape, stitching and the like.

. WhatI'claim and desire to secure by Letters Patent 1s:

1. A container of the character described folded from a blank and including, a bottom wall, side and end walls having fold line hinge connections to the bottom wall and extending upwardly therefrom, side flaps having fold line end connections with the end walls and extending inwardly from said end walls in overlying relation to the side walls, a side liner having fold line hinge connection with the upper edge of one of the side walls and extending inwardly and downwardly therefrom in overlying relation to the adjacent side flaps, a bottom liner having fold line hinge connection with said side liner and overlying the bottom wall with the side edge of the bottom liner remote from said side liner engaging the side flaps which overlie the other side wall, tongues cut from the side flaps that overlie said other side wall and extending from the end walls exteriorly of said other side wall, said other side wall having slots parallel to and spaced from the fold line hinge connections between the end walls and side flaps, end liners having fold line hinge connection with the bottom liner and extending upwardly therefrom in engagement with the end walls, said end liners each having an edge substantially engaging the side flaps which overlie said other side wall whereby the tongues extend from the end walls over the outer surface of said other side wall and through the slots in said other side wall, end portions on the tongues turned back toward the adjacent end wall and engaging the inner face of said other edges of the adjacent end liners and inner face of said other side wall cooperate to hold the tongue in position toretain said other side wall and end wall in folded condition, a cover member having fold line hinge connection with the upper edge of said other side wall and ex tending over the said one side wall, and means securing the cover in container closing position.

2, A container of the character described folded from a blank and including, a bottom wall, side and end walls having fold line hinge connections to the bottom wall and extending upwardly therefrom, side flaps having fold line end connections with the end walls and extending inwardly from said end walls in overlying relation to the side walls, a side liner having fold line hinge connection with the upper edge of one of the side walls and extending inwardly and downwardly therefrom in overlying relation to the adjacent side flaps, a bottom liner having fold line hinge connection with said side liner and overlying the bottom wall with the side edge of the bottom liner remote from said side liner engaging the side flaps which overlie the other side wall, tongues cut from the side flaps that overlie said other side wall and extending from the end walls exteriorly of said other side wall, said tongues and cutouts formed thereby being spaced from the top and bottom edges of the side flaps, said other side wall having slots parallel to and spaced from the fold line hinge connections between the end walls and side flaps, end liners having fold line hinge connection with the bottom liner and extending upwardly therefrom in engagement with the end walls, said end liners each having an edge substantially engaging the side flaps which overlie said other side wall whereby the tongues extend from the end walls over the outer surface of said other side wall and through the slots in said other side wall, end portions on the tongues turned back toward the adjacent end wall and engaging the inner face of said other side wall and lying in the cutout portions of the adjacent side flaps and in the same plane as said side flaps with the free ends engaging between the edges of the adjacent end liners and the inner face of said other side wall whereby said edges of the adjacent end liners and inner face of said other side wall cooperate to hold the tongue in position to retain said other side wall and end wall in folded condition, a cover member having fold line hinge connection with the upper edge of said other side Wall and extending over the said one side wall, a flange on the cover and extending downwardly therefrom in engagement with the outer face of said one side wall, inturned flanges on the upper edges of the end walls and selected side flaps for stiffening same, said inturned flanges having engagement with the under surface of the cover, the flange on the cover having tab receiving slots therein, and locking tabs cut from said one side wall and said side liner and extending upwardly over the outer face of the flange on the cover and having an end portion extending through the tab receiving slot whereby the end portion tabs engage the sides of the slots to resist withdrawal of the locking tab from the slots.

3. A fiberboard container having two walls disposed at right angles, one of said walls having an end flap that has a fold line hinge connection thereto and that engages with the inner face of the other wall, a tongue extending from the fold line hinge connection of the end flap and said one wall, said tongue being cut from said end flap in spaced relation to the top and bottom edges thereof and forming a cutout in said end flap, said tongue having a fold line spaced from and parallel to the fold line hinge connection of the end flap and said one wall, the other wall having a slot therein parallel to said fold line and spaced therefrom a distance substantially equal to the spacing of the fold lines in the tongue, said tongue extending over the outer face of said other wall and through the slot in said other wall and having an end portion defined by the fold line in the tongue which lies in the cutout portion of the end flap against the inner face of said other wall whereby said end portion is in the same plane as the end flap, and means engaging the end portion of the tongue to hold said end portion against hinging movement thereof relative to the remainder of the tongue.

4. A fiberboard container having two walls disposed at right angles, one of said Walls having an end flap that has a fold line hinge connection thereto and that engages with the inner face of the other wall, a tongue midway the height of said flap and extending parallel thereof from the fold line hinge connection of the end flap and said one wall, said tongue being cut from said end flap and forming a cutout therein, said tongue having a fold line spaced from and parallel to the fold line hinge connection of the end flap and said one wall, the other wall having a slot therein parallel to said fold line and spaced therefrom a distance substantially equal to the spacing of the fold lines in the tongue, said tongue extending over the outer face of said other wall and through the slot in said wall and having an end portion defined by the fold line in the tongue which lies in the cutout portion of the end flap against the inner face of said other wall whereby said end portion is in the same plane as the end flap, and an inner liner engaging the inner face of said one wall and having an edge engaging the inner surface of the end flap, the end portion of the tongue being engaged between the said other wall and the edge of the end liner to hold said end portion against hinging movement thereof relative to the remainder of the tongue whereby said tongue retains the said one wall and other wall in assembled condition.

References Cited in the file of this patent UNITED STATES PATENTS 448,824 Scott Mar. 24, 1891 1,703,042 Kondolf Feb. 19, 1929 2,100,750 Ringler Nov. 30, 1937 2,277,717 Sackett Mar. 31, 1942 2,331,754 Wohlers Oct. 12, 1943 2,341,928 Levkoif Feb. 15, 1944 2,377,125 Borah et al May 29, 1945 2,646,916 Meller July 28, 1953