US1989659A

US1989659A - Carton

Info

Publication number: US1989659A
Application number: US497595A
Authority: US
Inventors: Frank W Adsit; Arthur J Murray
Original assignee: ADSIT; HOWARD L FISCHER; IRVING M MADISON
Current assignee: ADSIT; HOWARD L FISCHER; IRVING M MADISON
Priority date: 1930-11-22
Filing date: 1930-11-22
Publication date: 1935-02-05
Anticipated expiration: 1952-02-05

Description

Feb. 5, 1935. F. w. ADSIT Er AL 1,989,659

CARTON Filed Nov. 22, 1930 V I V gwwzvdo'c 1 70/11/70 Kc/Visit firth? J 16127109 attozmq Patented Feb. 5, 1935 PATENT OFFICE CARTON Frank w. Adsit and Arthur J. Murray, Minne-' apqlis, Minn., assignors, by direct and mesne assignments, of one-half to said Adsit, onefourth to Howard and one-fourth dianapolis, Ind.

L. Fischer, St. Paul, Minn., to Irving M. Madison, In-

Application November 22, 1930, Serial No. 497,595

. 7 Claims.

Our invention relates to improvement in cartons and is particularly adapted to a new construction of carton designed to hold the closing flaps in locked closed position.

A further feature of the invention resides in a locking means for holding the carton closed, particularly such type of cartons where one or more of the flaps act as a closing flap for the carton placed either at the ends or on the side of the carton.

I Our invention further includes an improved locking means for the closing flaps, such as butter cartons which have been treated with a wax-like finish or a. parafiin finish, and where it is difiicult to hold the flap in closed relation owing to the slipping of the same so that our improved type of carton is designed to accomplish a means of positively locking the carton in closed relation and is very adaptable to butter and other similar cartons.

A feature resides in providing a flap for acarton with notches cut in the edges in such a manner as to cause the notch to register with a shoulder formed by other flaps or portions of the carton and thus prevent the closing flap of the carton from becoming disengaged. Our invention includes a means of locking. a carton in a manner so that it may be sealed if desired, to

prevent opening of the same without breaking the seal yet requiring no additional parts or members excepting those forming the carton itself. 9

These features together with other details and objects of the invention will, be more fully and clearly set forth in the specification and claims.

In the drawing forming part of our specification: a

Figure 1 is a diagrammatic died-out formation of a design of our'carton and flap locking or sealing means.

Figure 2 is a perspective view of the carton in closed position. V

Figure 3 is a section showing a portion of the carton broken away.

Figure 4 illustrates a detail portion of another tom of the locking seal for the closing flap.

Figure 5 illustrates the form of locking seal for the flap in perspective, showing a portion of a carton and showing the closing flap in the act of being closed to seal the carton.

Figure 6 is a section on the line 6-6 'of Figure 4. I The carton A may be made of any suitable shape and design and we have illustrated a diedout geometrical development of one form of the carton in Figure 1, which is the usual design and form of carton used for a pound of butter or the like. This provides a rectangular carton of the shape illustrated in Figure 2, when folded together.

The carton A is formed with a body portion 10 which is positioned centrally and which is formed with

transverse score lines

11, 12, 13 and 14, so as to provide the sides 15 for the carton when the same is folded.

From the score line 11 we provide a flap 16 which extends inside of the carton when the same is folded. This flap 16 carries a shortend flap 17 on one end. The side wall 15 between the

transverse score lines

12 and 13 is provided with end flaps 18 while the side wall 15 below the score line 14 in Figure 1 is provided with end flaps 19.

The side 15 between the

transverse score lines

11 and 12 is provided with an end closing flap 20 from which projects a locking or sealing flap 21 being joined withthe closing flap 20 by the score line 22. Virtually in line with the score line 22 we provide notches 23 which are formed with square shoulders on one side and rounded corners 24 on the other side.

The wall 15 between the

transverse lines

13 and 14 of the body 10 is also provided with an end closing flap 20 and a sealing or locking flap 21, together with a locking notch 23 of the same formation just described.

When the carton A is folded to close the same into the rectangular parallelepiped shape, it is folded on the

score lines

11, 12, 13, and 14, and the end flaps 1'7, 18, and 19 are folded into the ends as illustrated in Figure 5, so that the

flaps

18 and 19 overlap at the ends first and then the closing flap 20 is folded to cover the

flaps

18 and 19 and the sealing or locking tongue 21 is slid into the opening 25. The

flaps

18 and 19 form a narrow slit 26 by reason of the straight sides 27 formed on the

flaps

18 and 19 into which the square shoulder of the notch 23 is adapted to engage.

The flaps 20 may be provided with anotch 23 between the flap 20 and the closing or sealing flap 21 with square shoulders on either side, as illustrated in Figure 4.

The primary feature of our carton resides in the means of locking the closing flaps 20 to close the carton A so that these closing flaps will not slip out after the tongue or sealing flap 21 has been inserted in the opening 25. The open notches 23 provide locks'on either side of the free end of the closing flap 20 which engage in the slits 26 and owing to the fact that the edges 28 of the tongue or sealing flap 21 which are adjacent the notches 23 naturally curl downward' slightly, the square shoulder of the notch 23 will engage in the slits 26 bacl r of the straight portion 27 of the

flaps

18 and 19 and lock the'tongne 21 to hold the same against slipping out of the opening 25, thus holding the closing end 20 of the carton sealed shut.

Figure 6 illustrates the slightly inwardly curled edges 28 of the sealing tongue or flap 21. We have found that our construction of carton is particularly adapted to butter cartons or similar cartons which are parafiined or coated with a. wax-like finish where the flaps are rather slippery and aptto slide out easily. This is an im- .portant structure in cartons of this nature because unless the butter is sealed in tightly it is apt to slip out of one end and thus cause a material damage and loss. We have found our cartons to accomplish a very desirable and long felt want in absolutely sealing the closing flaps of the carton in such a manner that they will not open and if it is desired to lock the carton with a seal that will hold the same closed, it is only necessary to bend the edges 28 inward a little more, whereupon they will tightly engage back of the straight edges 27 in the slits 26 formed thereby and will seal the carton closed so that it cannot be opened without virtually destroying or tearing a portion of the same. The advantages of this structure to butter cartons and the like will be Very apparent to those skilled in the art and we believe that we have accomplished a long felt want.

In order that the cartons may be easily opened when desired, a portion of the fold between the

flaps

20 and 21 is not scored. This unscored portion is out along the line 30 to form a tab 31. When the flaps 21 are bent along the score lines 22, the tab 31 does not bend but remains in line with the flap 20, as illustrated in Figures 3 and 5. By pushing outwardly on the tab 31, the seal may be released, and the end of the carton opened without injuring any of the flaps. By opening in this manner, the carton may be opened and closed repeatedly.

By forcing the tab 31 outwardly, the flap 21 is straightened out, and the notches 23 come out of engagement with the edges 27. If it is attempted to open the carton in any other manner such as forcing the sides 32 of the flap 20 outwardly, the notches engage more firmly with the edges 27, and it is virtually impossible to open the end in this manner without damaging the

flap

20 or 21.

In accordance with the patent statutes we have described our invention and while we have set forth a particular structure and formation of the carton, we desire to have it understood that the same is only suggestive of a means of carrying out the principles thereof, as well as the shape and design of the carton, it being obvious that other formations may be employed where it is desired to lock or seal the cartons against accidental opening and our invention is within the scope of the following claims.

We claim: 1. The combination, a carton container formed from a single sheet of material died out to the desired shape with a series of sides, score lines through said sides, a series of closing flaps, some of which provide under closing flaps and others of which provide covervflaps, said underclosing flaps .ihaving tapered edges, straight portions on said tapered edgesadapted to co-operate with edges of the sides of the carton to form a narrow slit, locking flaps on said cover flaps and said cover flaps having a notched recess adapted to engage in said slits to lock the carton sealed.

2. The combination, of a carton having the character of a rectangular parallelepiped or the like, inner closing flaps having tapered edges, straight portions on said tapered edges adapted to co-operate with adjacent edges of the carton to provide narrow slits, a cover flap, a locking tongue formed extending from said cover flap, a score line dividing said cover flap and locking tongue, and a shouldered open notch in said cover flap formed in the ends of said score line to cause said locking tongue to extend into said slits and engage back of the edge thereof to hold the cover flap locked in closed position.

3. A carton including, a body portion having side walls formed therein, closing flaps at the ends thereof, a notch in said closing flaps, a narrow recess formed by the folding of the other closing flaps, said notch and said recess forming a lock for the closing flaps of said carton, and tab means extending to the surface plane of the adjacent side for opening said carton without injuring said flaps.

4.. A carton including, a body portion having integral closing flaps, a locking means for said closing flaps including an open notch and shoulder adapted to engage within a recess formed by folded portions of the carton, and tab means ex- 5. A carton closure in combination with a carton having a series of sides, closing flaps,.and a cover closing flap including, a locking means coniprising a notch, means in the cover closing flap adapted 'to engage in a recess formed by said other flap, and a releasing tab to release said notch means extending to the surface plane of the adjacent side from engagement with 'said flaps.

6. A carton including, side walls forming a tubular carton, under closing flaps formed on two of said side walls at each end of said carton, a tapered wall on one side of each of said under closing flaps, a straight portion on each of said tapered sides extending parallel to the end of an adjacent side wall between said two side walls bearing under closing flaps, closing flaps at each end on the remaining side wall, a sealing flap on each closing flap, a notch on either side of said closing flap, each notch comprising a right angular locking shoulder adapted to engage behind the straight portions of the said under closing flaps, and an arcuated side on said notch adapted to facilitate the operation of closing the closing flap.

7. A carton including, sides, closing flaps, a cover closing flap, and a sealing flap on said cover closing flap, and a tab on said cover closing flap extending approximately to the surface plane of the adjacent side for pulling out said sealing flap.

FRANK W. ADSIT. v ARTHUR J. MURRAY.