US2081419A - Carton - Google Patents

Description

May 25, 1937. J. c. BENscHoTr-:R

CARTON Filed Sept. 10. 1955 I N VEN TOR. JAMES C- .BENBCHO TEE.

H/5 ATTORNEY.

Patented May 25, 1937 l UNITED sTAfrEs oAnToN James C, Benschoter, Stockton, assignmto Flbrehoard Products Inc., San Francisco, Calif.,

a corporation of Delaware Application September 10, 1935, Serial No. 39,915

13 Claims.

Myinvention relatesv to a knock-down, ilbreboard carton, and particularly to one designed for shipping fragile products such as eggs.

One of the objects of my invention is the pro'- vision of a light-weight carton which may be readily knocked down and set up so as to permit the same one to be usedniany times.

Another object of my invention is the provision of a carton which may be set up quickly without the use of machinery by the manual assembly of simple parts which form a ilat package before setting up.

Another object of the invention is the provision of a carton having double walls which insure a greater degree of protection for the contents, and which also increase the stability of the cartonso as to permit stacking without danger of crushing.

My invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the following description of my invention. It is to be understood that I do not limit myself to this disclosure of species of my invention, as I may adopt variant embodiments thereof within the scope of the claims.

Referring to the drawing:-

Figure 1 is a perspective view of the shipping carton of my invention, portions being broken away toshow the arrangement of the interlocking parts.

Figure 2 is a. vertical transverse sectional view of the carton showing the position of the parts in set-up form and with the cover closed.

Figure 3 is a fragmentary sectional view showing the arrangement of the parts at one end of the carton.

Broadly; my invention comprises a carton having a continuous ring or band which forms the 40 outer end and side walls, and in which two crossed liner strips are arranged and inter# locked with the ring to provide a carton in which the bottom, end and side walls are double. Means are also provided to hold the cover in closed posi- 45 tion; and suitable grips are arranged in the outer end walls to facilitatefhandling of the filled package. The carton is shipped to the packer and may be stored until use in a iiat package requiring a minimum of space. After 5o the carton has been used for a shipment of goods or produce it may readily be knocked down and returned to the packer for reuse. The knockdown of the carton involves only the separation of the three interlocked parts; and the manu- 55 facture of the parts ready for assembly is correspondingly simple, since it involves nothing more than the cutting ci' three simple blanks, suitably creasing the blanks for folding, and joining by staples or other desired means. opposite ends of one of the blanks to form a four- 5 sidedrlng.

In greater detail the carton of my invention comprises a strip of breboard, provided with transverse creases dividing the strip into panels which form the outer side Walls 2 and outer end lo walls 3. This strip may comprise a single piece of fibreboard, or if the size of the parent sheet from which it is cut is not large enough it may be formed of two or more pieces permanently secured together.

I prefer to use a heavy solid flbreboard for the outer Walls because of its greater strength, and because it presents an excellent surface for printing. Opposite ends of the piece are connected in any suitable manner such as by staples 20 l It, or by stitching, or byan adhesive, to form a continuous four-sided ring. y

The blank including the outer side and end walls, is also shaped to include an integral stub flange 5, extending from the lower edge of each 25 end wall 3, and hinged thereto along the crease 6, which permits the flange to fold inwardly when the carton is set up. A similar stub flange I is provided at the upper edge of each end wall 3: and is adapted to fold inwardly along the 30 crease 8 when the carton is in use. 'I'hese anges, 5 and 1, are relatively short and are the only projections which break the otherwise simple rectangular outline of the blank.

Centrally disposed in the upper portion of each 35 end wall 3 is an elongated slot 9, having a wide tongue II formed along its upper boundary as shown to provide a grip lor handle which facilitates the handling of the filled carton.

Disposed within the outer ring is a second strip of fibreboard, preferbaly of the double-faced corrugated type. 'I'his strip is also provided with transverse creases which divide the strip into panels forming the inner side walls I2, outer bottom wall I3, and the cover or top I4. The strip is folded into a flat-bottom, U-shape piece; and is then inserted into the outer ring preferably from the bottom, so that the stub flanges 5 are enclosed and lie on the inside and ilat against the inside of the bottom I 3, and the side walls I2 lie flat against and in registry with the side panels 2. This disposes the cover panel I4 in proper position. Extending from the upper edge of the panel I2, is a flap I6 adapted to fold inwardly along the crease I'I when the carton is 55 A third strip or nbreboard, preferamy or the' same stock as the second strip, is provided with transverse creases to permit the strip to be folded into a flat-bottom U-shape piece, which forms the two inner ends 2l, and the inner bottom wall 22 of the carton.

When the carton is to be set up, the ring is opened from its collapsed position so that the creases form four parallel corner folds and the adjacent sides are perpendicular to each other. The second strip is then folded into a U-shape piece and slipped through the outer ring from the bottom. As the bottom I3 of the second strip approaches the lower edge of the end wall 3, the stub flanges 5 are pressed inwardly so that the upward movement of the bottom is arrested by contact with the lower surface of the flanges. 'I'he walls I2 of the second strip now lie ush against and in registry with the outer side walls 2, providing a liner therefor. The third strip, also folded into a U-shape piece, is disposed within the other two strips with the bottom 22 crossing the outer bottom I3. The bottom 22 thus provides a liner for the bottom I3, and the end walls 2 I lie ush against and in registry with the outer end walls 3 to provide liners for them. It will also be noted that the bottom 22 bears against the upper surface of the stub flanges 5 so that the stub flanges are interlocked between the two bottoms I3 and 22. f

After the packing of the carton has been completed the flanges 'l are folded down across the upper edges of the walls 2|; and the flap I6 folded inwardly over the ends of the flanges 'I. 'Ihe top I4" is then closed down and the tuckilap I8 inserted between the inner and outer walls I2 and 2 respectively, to frictionally hold the top in closed position.

It will be noted that the inturned stub flanges 5 and 1, which are integral with the outer ring, lie between the adjacent portions of the two crossed pieces forming the bottom and the inner side and end walls; and that this engagement interlocks all three parts securely together, altho it is readily releasable to permit separation of the parts.

In the closed position of the carton the edge folds formed by the transverse creases in each strip are parallel in the same strip, but lie at 90 to the folds in each of the other two strips. The arrangement of the three interlocked strips produces a double walled carton in which the longitudinal axis of each strip as to any given side. lies at 90 to the longitudinal axis of the adjacent strip in that side. Viewed in another way the carton may be considered as three strips, folded and nested together so that their respective longitudinal axes or median lines define three planes intersecting at right-angles to each other.

If desired a central partition 26 is provided to prevent the layers of contained products in one end from sliding into the layers at the other end. When eggs are packed, flats are inserted between the layers and at the top and bottom of the carton in accordance with the customary method of packing.

It will be noted that in the lled container, the weight of the contents bearing. against the inner and outer bottom walls force them together so that the stub flanges l at each end of the carton are clamped in a secure engagement. Because of this arrangement of the parts, the stub fiang are much shorter than would otherwise be possible. It is found that a flange having a width of 1%" to 2" is sumcient. It will be understood, that the width of this flange hss a direct relation to the width, 'and therefore the cost, of the blank out of which the ring is formed. Because of the inherent limitations in drawings, and the showing of the thickness of the material on a scale which is larger than the true one, .the position of the inner and outer walls are shown as they are the first time the carton is set up. It will be obvious that when filled and subjected to pressure, the inner or liner walls will lie flatly against the outer walls so that the spaces between these walls as shown in the drawing, will be eliminated, except close to the separating flap or flanges.

` A carton made in accordance with my invention is so strong and rigid that it is especially suitable for shipping eggs. It is made up complete, in the factory; the single stitching or stapling operation being done there. After the contents have been removed from the carton, it may be disassembled by reversing the assembly step and the knocked-down pieces returned in a flat package to the shipper to be set up again, relled and shipped.

'Ihe carton is thus capable of long repeated use, and because of this, and of the ready replaceability of worn or damaged parts, either with new parts or salvaged parts of other cartons, the per-shipment cost of my carton before it is finally worn out and discarded, is reduced almost to the vanishing point. Another factor contributing to this result is the light weight of the carton, a size suitable for thirty dozen eggs weighing 4 lbs. less than a wooden crate of the same capacity. Still another cause of the unusual economy attending the use of my carton, is the simplicity oi' its parts and manufacture, and the absence of special tools or equipment for its assembly by the user.

I claim:

1. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providing a double bottom and inner walls for the carton, and flanges on the ring interposed between the bottom walls.

2. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providing a double bottom and inner walls for the carton, flanges on the ring interposed between the bottom walls, and a cover hinged on the upper edge of one of the crossed pieces, and on its free edge having a tuck flap disposable between the side walls.

3. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providing a double bottom and inner walls for the carton, a cover hinged on the upper edge of one of the crossed pieces, and on its free edge having a tuck flap disposable between the side walls, and flanges on the ring disposed between the bottom walls and under the cover.

4. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped vpieces disposed within the ring and providing a double bottom and inner walls for the carton, one of the crossed pieces having an inturned flange on one of its upper edges and a cover ap on the other upper edge, flanges on the ring disposed between the bottom walls and under the' cover, and a tuck ap on the cover disposable between the side walls and against the inturned flange.

5. A knock-down double walled carton comprising three strips of material creased to divide the strips into panels adapted to form the walls of the crate, one of said strips comprising four outer walls, the second strip comprising two outer and two inner walls, the third strip comprisingthree inner walls and means on two of said outer walls engaging said second and third strips to prevent disengagement of the parts when the carton is set up.

6. A carton comprising a ring forming oute side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providing a double bottom and inner walls for the carton, anges on the ring interposed between the bottom walls, and a cover hinged on the upper edge of one of the crossed pieces.

7. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providing a double bottom and inner walls for the carton, flanges on the ring interposed between the bottom walls, a cover hinged on the upper edge of one of the crossed pieces, and means for securing the cover in closed position.

8. A carton comprising a ring forming outer side and end walls of the carton, a pair of crossed U-shaped pieces disposed within the ring and providingm a double bottom and inner walls for the carton, flanges on the ring interposed between the bottom walls, a cover for the carton, and means for securing the cover in closed position.

9. A carton comprising three members folded to form wall panels and nested together, two of the members being rectangular strips and the other member being a closed ring, and stub flanges on the ring member for interlocking the assembled strip members.

10. A double walled carton comprising a strip of solid berboard creased and folded to form a continuous band comprising the four outer side and end Walls of the carton; a second strip of corrugated board creased and folded to nest within the first strip and comprising the outer top and bottom and the inner side walls of the carton; a third strip of corrugated board creased and folded to nest within the other two strips and comprising the inner bottom and inner two end walls and stub anges on said solid fiberboard strip for interlocking with said second and third strips to prevent disengagement of the parts when the carton is set up.

11. A double walled carton comprising a strip of solid berboard creased and folded to form a. continuous band comprising the four outer side and end walls of the carton, an inwardly extending flange on each edge of the two outer end walls; a second strip of corrugated board creased and folded to interlock with said flanges of the vfirst strip and comprising the outer top and bottom and the inner side walls of the carton; and a third strip of corrugated board creased and folded to lie within the other two strips in engagement with said flanges and comprising the inner bottom and inner two end walls.

12. A double walled carton comprising a strip of solid berboard creased and folded to form a continuous band comprising the four outer side and end walls of thecarton, an inwardly extending flange on each edge of the two outer end walls; a secon-d strip of corrugated b'oard creased and folded to interlock with the flanges on the lower edges of the end Walls of the first strip and comprising the outer top and bottom and two inner side walls of the carton, one end of said strip forming the front inner side wall, and the other end forming the cover for the crate, a iiap on the side wall end of the strip adapted to o'verlie the fianges on the upper edges of the end walls, a tuck-in nap on the edge of the cover adapted to slip between the outer and inner side Walls to hold the top in closed position; and a third strip of corrugated board creased and folded to lie within the other two strips and comprising the inner bottom and inner two end walls.

13. A double walled carton comprising a strip of solid fiberboard creased and folded to form a continuous band comprising the four outer side and end 'wallsof the carton, an inwardly extending flange on each edge of the two outer end walls; a second strip of corrugated board creased and folded to interlock with the iianges on the lower edges of the end walls of the first strip and comprising the outer top and bottom and two inner side walls of the carton, one end of said strip forming the front inner side wall, and the other end forming the cover for the crate, a flap on the side wall end of the strip adapted to overlie the flanges on the upper edges of the end walls, a tuck-in flap on the edge of the cover adapted to slip between the outer and inner side walls to hold the top in closed position; and a third strip of corrugated board creased and folded to lie within the other two strips and comprising the inner bottom and inner two end walls, the two end edges of said third strip ybearing against the inturned flanges on =the upper edge of the end walls to secure the third strip in position.

JAMES c. BENSCHOTER.

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