US2914233A - Cartons - Google Patents

Description

D. LEVKOFF I Nov. 24, 1959 CARTONS 3 Sheets-Sheet 2 Filed Feb. 14, 1957 FIGS.

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United States Patent CARTONS David Levkolf, Great Neck, N.Y., assignor of one-fourth to Evelyn S. Levkotf, one-fourth to Henry S. Lcvkolf, and one-fourth to Edith L. Sennet, all of Great Neck. N.Y.

Application February 14, 1957, Serial No. 640,119

Claims. (Cl. 229-16) This invention relates to cartons, and particularly to those of tray-like form, such as are widely used at the present time for containing baked goods, candies, fruits, vegetables and numerous other products.

It is an object of the invention to provide a carton of this type which can be constructed from a single sheet of cardboard; which can be distributed to the consumer in a flattened condition and easily erected for filling, and which will have its walls, and particularly the end walls, strongly reinforced and arranged in interlocked relation ship to thereby provide stiffness and rigidity especially at the ends of the carton.

It is another object of the invention to provide a carton adapted for enclosure in transparent wrapping, and which shall be provided with means tending to maintain parts of the wrapping arranged taut across the open top of the carton thereby holding the wrapping from contact with the packaged commodity.

It is a further object of the invention to provide a carton in which interlock of portions of overlying end walls result in a stiffened structure and one secured without adhesive securement together of said ends walls, the stiffness of the walls and the arrangement of shoulders or ledges on some of them permitting stacking of these cartons.

It is an object of the invention to provide a carton which can be economically fabricated; which can be shipped in flattened form thus occupying little space, and which can be speedily erected in readiness for the reception of its intended contents.

With these, and otherobjects to be hereinafter set forth in view, I have devised the arrangement of parts to be described and more particularly pointed out in the claims appended hereto.

In the accompanying drawings, wherein an illustrative embodiment of the invention is disclosed,

Fig. 1 is a top plan view of a carton constructed in accordance with the invention;

Fig. 2 is a fragmentary view of a portion of the carton, showing how the walls are upwardly folded to assume their erect positions;

Fig. 3 is an enlarged sectional view, taken substantially on the line 33 of Fig. 1, looking in the direction of the arrows, and showing the locking flaps on the outer end walls disengaged from behind the locking flaps on the inner end walls;

Fig. 4 is a sectional view, taken substantially on the line 44 of Fig. 1, looking in the direction of the arrows, and showing the flaps on the end walls and those on the side walls in upstanding position, the position of the latter flaps being disposed upwardly as the normally horizontal position which these flaps assume in the operative condition of the carton;

Fig. 5 is a front elevational view of the carton;

Fig. 6 is a face view of the blank from which the improved carton is produced;

. Fig. 7 is a view of the blank in its folded and glued 2,914,233 Patented Nov. 24, 1959 condition and in the flattened form in which it is distributed to the consumer;

Fig. 8 is a transverse sectional view through the carton, similar to that of Fig. 5, but with the outer wall locking flap in its engaged position;

Fig. 9 is an enlarged sectional view taken substantially on the line 9--9 of Fig. 8, looking in the direction of the arrows;

Fig. 10 is a face view of a blank for another embodiment of the invention, and

Fig. 11 is a sectional view in perspective of a carton made from said blank.

Referring to the drawings, and more particularly to Fig. 1 thereof, wherein is shown a blank from which the improved carton is formed. The blank is preferably, but not necessarily, composed of a single sheet of cardboard, formed substantially in the shape shown. The bottom wall or panel of the carton is shown at 1, one edge of the same being defined by the score lines 3. At each end of the panel of which the bottom 1 forms a part, are parallel score lines indicated at 3, 4 and 5. The portion 6 of the blank that is located between the score lines 3 and 4 constitutes one of the outer end walls of the carton. The portion 7 located between the score lines 4 and 5 forms a ledge or shoulder at the top of each end wall 6, and the flap indicated at 8, and provided with the central tab 9, forms an outer end wall lockingflap. Both ends of the blank beyond the fold or score lines 3 are similar. That is to say, each of these ends has the outer end wall 6, ledge 7 and outer end wall locking flap 8, provided with tab 9. Centrally located in the bottom 1 adjacent to the two transverse score lines 3, are slits 10.

The side walls of the carton are respectively shown at 11 and 12, and each of these walls is formed with a longitudinal score line 13 from which extends a flap 14 directed inwardly in the erected carton. The portion of the blank in which the side walls 11 and 12 are formed is longitudinally scored as indicated at 15, and beyond the score line 15 is provided an attaching flap 16, which is extended inwardly to overlie the upper face of the bottom 1 adjacent to one edge thereof and is adhesively attached to the bottom in the manner seen in Fig. 5.

The inner end Walls for the carton are indicated at 17, the upper edge of each of said inner end walls being defined by the score line 18 beyond which is located the inner end wall locking-flap 19, provided with a central tongue 20 adapted to befitted into one of the slits 10. The ends of the side walls 11 and 12 are connected to the inner end walls 19 by means of foldable webs 21, said webs being foldable on the score lines 22 and 23. Formed adjacent to the score lines 18 are the slits 24 which result in the production of the tongues 25.

The blank is shown in its glued and flattened condition in Fig. 7 and in the form in which the same is shipped to the consumer. It will be therein noted that the blank of Fig. 6 has been folded on the longitudinal score lines 2 and 15 and the attaching flap 16 has been adhesively attached to the upper face of the bottom 1 adjacent to one edge thereof. To erect the carton, or bring it into goods-receiving position, the blank, now as shown in Fig. 7, is folded on the transverse score lines 3, and as the end walls and side walls all assume an erect position, the webs 21 will fold on their score lines 22 and 23, as shown in Fig. 2. The inner end wall locking flaps 19 are extended downwardly over the webs 21 and the tongues 20 on these flaps 19 are inserted in the slits 10,

which slits are located at the junctions of the outer end manner to enable the tabs 9 to be inserted through the slits 24 to thus position these tabs behind the inner end wall locking flaps 19 in the manner shown in Figs. 8 and 9. This interlocking arrangement in which the inner end wall flaps 19 are engaged with the slits and the outer end wall flaps 8 have their tabs 9 engaged behind flaps 19, provides an exceptionally rigid end wall structure for the carton, and one attained without the use of adhesives in the end wall areas. Moreover, the formation of a ledge or shoulder 7 at the top of the carton at each end also adds substantial rigidity to the ends of the carton. This rigidity is of considerable importance since it enables the filled cartons to be stacked one upon the other without causing collapse of the walls of the carton.

In addition, there is a marked tendency to the portion of the carton which forms the ledges or shoulders 7 to rise upwardly and outwardly to some slight extent and this tends to slightly stretch and elevate the transparent wrapping above the packaged commodity. This is important when such commodities consist of baked goods provided with icing, since the wrapping is held from contact with the icing.

In the embodiment of the invention shown in Figs. 10 and 11, the blank shown in Fig. 10 has a central rectangular area 30 constituting the bottom of the carton formed as shown in Fig. 11. The blank is folded on the longitudinal, parallel score lines indicated respectively at 31 and 32 to provide upstanding opposite side walls indicated at 46 and 47. The side wall designated at 47 is formed with a longitudinal score line 48 on which it is folded to provide the inturned top flap 49. Similarly, the opposite side wall of the blank is folded on the score line 52 to provide the opposite inturned top flap 53.

The blank is also provided with two transverse score lines both shown at 33, and beyond each of these score lines is an outer end wall 54. This outer end wall 54 is transversely folded on the parallel score lines indicated respectively at 39 and 41, a strip-like area 40 provided between these score lines forming a horizontal ledge along the top of the carton at the end wall. Extending beyond the score line 41 is an outer locking flap 42 provided with a centrally located tab 43,

The inner end wall at each end of the carton is composed of a pair of overlapped and adhesively united flaps indicated generally at 35- and 350. Each of the flaps 35 is formed with a score line 36 and a slit 51, and beyond the score line 36 is. provided the inner locking flap 37 adapted, when. the same is downturned on the score line 36, to enter into a slit 34 provided at the junction of the-bottom 30 and end wall 54. The flap 35- is also provided with the foldable web 44 adapted to be folded on the angular fold line- 45. The arrangement above described is present in all of the four flaps 35 and 35a, the outer locking flaps on the flaps 35a being indicated at 370.

As will be clear from Fig. 10', both ends of the blank and carton formed therefrom are alike, so that a description of one end will suflice. The manner in which this embodiment of the carton is set up will be seen in Fig. 11. It will be therein noted that the overlapping portions of the several flaps 35 and: 35a are adhesively united by the glue areas provided at 38' on the flaps 35, the carton having been folded. on the score lines 31 and 32 to. attain the overlap. of the flaps. 35' and 35a. When the blank, folded and glued as. above described, has its end walls raised to erect position byfolding on the lines 33, the. overlapped and adhesively united inner locking flaps can then bev downfolded on the score lines 36 to enable tongues 50 formed on these flaps to be inserted in the slits: 34. When the blank is folded on the score lines 39 and 41 the tabs 43- on the outer locking flaps 42 can be entered into the slits 51 as shown in Fig. 11, and the erection of the carton will then be complete, the same appearing as shown in Fig. 11.

Having described several embodiments of the invention,

it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claims.

What I claim is:

1. A carton having a bottom, side walls and inner end walls, the inner end walls being provided at the top with downturned locking flaps having tongues, the bottom being provided with slits receiving the tongues on said downturned locking flaps, outer end walls provided at their top with a ledge, said outer end walls each having a ilap, there being slits at the junction of the inner end walls with the locking flaps and end portions of said outer end wall flaps being inserted through the slits at said junctions.

2. A carton having a bottom, side walls and inner end walls, the inner end walls being provided with downturned locking flaps having their ends inserted in slits in the bottom, said inner end walls having slits located at the junction of said inner end walls with the locking flaps, outer end walls provided at the top with locking flaps which are downturned to extend over the flaps on the inner end walls, the locking flaps on the outer end walls being provided with tabs entrant into the slits at the junction of the inner end walls with the flaps thereon.

3. A carton having a bottom, side walls, and inner end walls, said inner end walls being provided with downturned locking flaps having tongues, the bottom having slits at its junctions with the end walls, the tongues on the locking flaps being entrant into said slits, outer end walls disposed on the outside of the inner end walls, said outer end walls being each provided with downturned locking flaps, the locking flaps on said outer end walls each having a tab at its free end, said inner end walls each havinga slit adjacent to its junction with its locking flap, and the tabs on the outer end wall locking flaps entrant into the last-mentioned slits.

4. A carton providedwith a bottom, side walls provided at the top with inturned flaps, outer end walls and inner end walls, each inner end wall having a downturned flap provided at its free endwith a tongue, the bottom havingslits into which said tongues are entered to maintain the inner end walls in downturned position, the outer end walls being provided at their tops with ledges, flaps extending downwardly fromsaid ledges, said flaps having tabs, the inner end walls having slits at the junction of their upper ends with the flaps thereon into which said tabs are entered to thereby dispose said tabs between the locking flaps onthe inner end walls and saidinner endwalls.

5. A carton provided with a bottom, side walls and inner and outer end walls, the inner end walls having downturned locking flaps and means engaging the same to hold such flaps in downturned position, the outer end walls being each provided at the top with a downturned locking flap, said flap having atabbedend, the inner end walls each having an aperture at; the junction of its upper endwith the locking flap thereon through which the tab on the outer end wall locking flap is entered to thereby dispose it between the inner end wall locking flap and the inner endwall on which said locking flap is formed.

References Cited in the-file of this patent UNITED STATES PATENTS 1,730,8l6 Grigg' Oct. 8-, 1929 2,401,944- Levkoff June H, 1946 2,414,703 Snyder Jan; 21, 1947 2,532,808 Grinnell Dec. 5, 1950 2,643,813 Vines June 3.0, 1953 2,730,293 Levkoif Jan. 10, 1956 2,750,100 Griesman June 12,.1956

FOREIGN PATENTS 482,947 ,Canada May'6, 1952 W p ar

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