US2015413A

US2015413A - Quick opening carton

Info

Publication number: US2015413A
Application number: US747995A
Authority: US
Inventors: Donald A Snyder
Original assignee: Marathon Paper Mills Co
Current assignee: Marathon Paper Mills Co
Priority date: 1934-10-12
Filing date: 1934-10-12
Publication date: 1935-09-24
Anticipated expiration: 1952-09-24

Description

Sept. 24, 1935. D, A. sNYDER QUICK OPENING CARTON Filed Oct. 12, 1934 @mm/W@ Patented Sept. 24, 1935 UNITED STATES PATENT OFFICE Marathon Paper Mills Company, Rothschild,

Wis., a corporation of Wisconsin Application October 12, 1934, Serial No. 747,995

An object of this invention is to provide an improved form of carton particularly adapted for holding ice cream arid the like, and which can be readily opened by an operator so as to permit the ice cream contained therein to be removed as a block and transferred to a dish.

Another object is to provide an improved form of carton folded from a at blank wherein the portions of the carton forming the inner flaps will mutually support each other, and will assemble to form a carton which is smooth on the inside and without any protuberances or depressions.

These and other objects, as` will hereinafter appear, 'are accomplished by this invention which is fully described in the following specification and shown in the accompanying drawing, in which- Figure 1 is a perspective view and assembled carton embodying the invention;

' Fig. 2 is a somewhat enlarged vertical section on the line 2 of Fig. 1;

. Fig. 3 is a plan view of the blank in which the carton is folded; and

Fig. 4 is a partial enlarged perspective view of the carton during the folding operation.

The embodiment illustrated comprises a carton formed from a blank, as shown in Fig. 3, having a bottom I0, opposing sides II and I2 formed integral with the bottom but separated therefrom by fold The bottom also has bottom flaps I3, I4 at opposite sides of the rectangular bottom, while the side II has inner flaps I5, I6 separated therefrom by fold lines, 'and the vside I2 has outer 'side flaps I1; I8 also separated therefrom by fold lines, the flaps I3, I 4 being severed from the flaps I1, I8 on the lines I9, I9.

The side II has a coverap 20, and the side I2l .p

has an overlying flap 2I also separated by fold lines. The outer side flaps I1 and I3 have

locking flaps

22, 23 which are adapted to overlieand to form an interlock'for holding the carton in assembled position. The side flap I3 is provided with a diagonal edge I3 and a transverse edge I3", preferably parallel to the bottom of the bottom flap, while the side flap' I5 has two edges I5", |51* cut to match the edges I38L and I3, respectively. Thus when the flaps I3 and I5 are moved into the same plane and into'the position which they assume in the carton when folded for use, these cut edges match. The same is true of the flaps I4 and I5. Fig. 4 shows the flaps I3,

I5 just before they have assumed their nal position, while Fig. 2 shows them in the final position' gherein a tight joint is providedvbetween these aps.

A narrow strip of glue, cement, or the like, 24 is applied vertically through the flaps I5 and I3, and preferably has an angle strip 25 at the 5 bottom which terminates at the lower outer corner so as to cover the inner portion of the joint formed between the edges I3a-and 15. At the same time a spot of glue 26 is applied to the upper outer portion of the flap I5 so-that when the 10 outer ap I1 is folded over the flaps I3, I5 and pressed down, it will be held by the strips of

gluev

24 and 25 and by the spot 26. Glue is similarly applied to the flaps I4 and I6, and the outer flap I8 is pressed down thereover and heldin the l5 same way as the flap Il. The carton is then ready for lling.

' When filledl with ice cream or the like, the cover flap 20 is pressed down after which the overlying iiap 2i is pressed down upon the ice 20 cream `and upon the nap 20. The

locking aps

22, 23 are then folded over and interlocked, thereby completely closing and fastening the package.

The ice cream if properly frozen can then be readilyremoved as a lblock or cake from: the 25 carton by the operator who preferably holds the carton with his two hands with the side I I toward him, the carton being in an upright position. He unlocks the

flaps

22, 23 and folds them back, holding the ap 22 between the thumb and index iinger of his right hand, while the flap 23 is held between the thumb and index nger of the left hand. While gripping these locking flaps he pulls outwardly on them so as to break the adhesion caused by the spot of glue 26 at each 35 side, and continuing to pull breaks the adhesion along the

strips

24, 25 so as to permit the outer aps I'I, I8 to` swing entirely clear of the flaps I3, I5 on the one side and I4, I6 on the other. At the same time the pull on the vertical strip 40 of adhesive 24 draws the inner flaps away from the block of ice cream, so that by setting the package on a flat surface the remaining portions of the carton still incontact with the ice cream can readily be drawn away from it, and the block of ice cream lifted therefrom by means of a spatula, or the like.

The at portions I3, lil? engage to stiften the walls of the carton and prevent any parts from protruding into the carton to be caught by the cake of ice cream. or by anything inserted into the carton.

I claim: v Y

l. A folded cardboard carton comprising a bottom and opposite side members connected together by overlapping aps including an outer side flap, a narrow strip of adhesive connecting the overlapping surfaces of the flaps when assembled, and adhering to the inner face of the outer side ap along a strip near its longitudinal center to a point near the bottom of the carton and extending therefrom at an angle to the outer lower corner of the outer side flap, and a spot of adhesive connecting the outer upper corner of the outer side ap to the flap beneath and adapted to be broken by a pull on the outer flap.

2. A folded cardboard carton comprising a bottom and opposite side members, the bottom having bottom flaps on opposite sides thereof, and the side members having side flaps on opposite sides thereof, each outer side flap overlapping the associated inner side flap and associated bottom flap, a narrow strip of adhesive for each overlapped set of flaps connecting the overlapping surfaces thereof and extending longitudinally of the inner face of the outer ap near its center and terminating in a section extending angularly from' the bottom of the longitudinal strip to the outer lower corner of the outer flap, and a spot of adhesive connecting the outer upper corner of each outer side flap to the ap beneath and adapted to be broken by a pull on the connected outer side flap.

3. A folded cardboard carton comprising a bottom and opposite side members, the bottom having bottom naps and the side members having side flaps, the side aps overlapping in folded relation, each outer side ap overlapping the opposing side flap and bottom flap, the last named aps lying in the same plane adjacent the outside flap, anarrow strip of adhesive connecting the overlapping surfaces of the aps when assembled and adhering to and extending longitudinally of the outer flap near its center and terminating in a strip of adhesive extending from the bottom of the longitudinal strip to the outer lower corner of the outer flap, and a spot of adhesive connecting each outer upper corner of each outer ap to the flap beneath and adapted to be broken by a pull on the outer flap.

4. A folded cardboard carton comprising a bottom and opposite side members, the bottom having bottom naps and the side members having side flaps, the side flaps overlapping in folded relation, each outer side flap overlapping the opposing side ap and bottom flap, the last named flaps lying in the same plane adjacent the outside flap and having their meeting edges contacting through substantially their entire length, a narrow strip of adhesive connecting the overlapping surfaces of the aps when assembled and adhering to and extending longitudinally of the outer flap near its center and terminating in a strip of adhesive extending from the bottom of the longitudinal strip to the outer lower corner of the outer flap, and a spot of adhesive connecting each outer upper corner of each outer flap to the nap beneath and adapted to be broken by a pull on the outer ap.

5. A folded cardboard carton comprising a bottom and opposite side members, the bottom having bottom flaps and the side members having inner and outer side flaps, the side flaps overlapping in folded relation, each bottom ilap forming a trapezoid having an edge parallel to the bottom of the flap and an edge making an acute angle with the bottom of the flap, the inner side flap each having a complementary reentrant edge in abutting relation to the edge of the associated bottom flap when the two flaps are in the same plane and overlapped by the associated outer side ap, and means for gluing the flaps to form a carton.

6. A folded cardboard carton comprising a bottom and opposite side members, the bottom outer side ap, and means for gluing the flaps to form a carton, the glue securing the outer lower corner of the outer flap to the inner flap and to the bottom flap at their diagonal junction.

7. A folded cardboard carton comprising a bottom and opposite side members, the bottom having bottom flaps and the side members having inner and outer side aps, the side flaps overlapping in folded relation, each bottom flap forming a trapezoid having an edge parallel to the bottom of the ap and an edge making an acute angle with the bottom of the ap, the diagonal line thus formed running to the outer lower corner of the bottom flap the inner side flap being cut to t the said edges of the bottom nap when the two flaps are in the same plane, a n'arlow L-shaped line of adhesive connecting the overlapping surfaces of the ilaps and extending longitudinally of -each outer flap and having an extension to the outer lower corner of the outer flap, and a spot of adhesive connecting the outer upper corner of each outer flap to the flap beneath.

8. A folded cardboard carton including a bottom and opposite side members, th-e bottom having a bottom ap and each of the side members having a side flap adapted to be associated with the other to provide inner and outer side aps overlapping one another when the carton is assembled, the bottom flap having an oblique side edge making an acute angle with the bottom of the ap at one ofthe corners of the bottom, an

-outer edge cut at a substantial angle to the oblique side edge and an opposite side edge running at a substantial angle from the terminus of the outer edge back to the opposite corner of the bottom, the inner side flap being provided with a complementary cut to closely t in abutted relation against the rst two aforementioned edges of the bottom ap when the bottom flap and the r inner side ap are in the same plane with the outer side flap in overlapping relation thereto, and means for gluing the flaps together.

9. A folded cardboard carton including a bottom and opposite side members, the bottom having a bottom flap and each of the side members having a side flap adapted to be associated with the other to provide inner and outer side flaps overlapping one another when the carton is assembled, the bottom flap having an oblique edge starting at the corner adjacent to the side flap, the outer continuation of thisedge extending in a direction generally parallel to the bottom of the bottom flap, the bottom ap and inner side flap having complementary meeting edges so that the two t throughout substantially their entire meeting length in edge abutting relation, and means for gluing the flaps together.

10. A cardboard carton including sections folded into angular relation with respect to one another, each of said sections having a ap extending therefrom at an angle thereto, said aps lying in the same plane and in butt edge relation and complementing one another in affording a 5 wall element for said carton, said flaps having their meeting edges respectively cut, the one to afford a. protuberant edge and the other a. complementary reentrant edge, said edges being in interfitting relation to one another and interlocked against slipping movement while in contact in the same plane, and the carton being also provided with an outer portion overlying the abutted flaps and secured thereto to maintain them in abutting intertted relation within the same piane.

DONALD A. SNYDER.