US2643815A

US2643815A - Sanitary milk carton

Info

Publication number: US2643815A
Application number: US207873A
Authority: US
Inventors: Komeo Oscar
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-01-26
Filing date: 1951-01-26
Publication date: 1953-06-30
Anticipated expiration: 1970-06-30

Description

June 30, 1953 KOMEO 2,643,815

' SANITARY MILK CARTON Filed Jan. 26, 1951 I 2 Sheets-Sheet l scar Woe? INVENTOR.

Patented June 30, 1953 UNITED STATES PATENT OFFICE SANITARY MILK CARTON Oscar Komeo, Linden, Mich.

Application January 26, 1951, Serial No. 207,873

The present invention relates to certain new and useful improvements in sheet material commodity cartons and has more particular reference to a cardboard paraffin coated container which is especially, but not necessarily, adapted to function as a sanitary throw-away milk carton.

It is a matterof common knowledge that throwaway milk cartons are of many styles and forms. As a general rule, milk cartons in the category under consideration are constructed from cardboard or the like and are interiorly and exteriorly coated, to render same leak-proof and stable, with paraffin and analogous wax coatings. Cartons commonly in use are vertically elongated, are rectangular in cross-section and have fiat upper and lower ends. The upper end is usually formed with a pouring hole having associated therewith a pull-type closing tab.

It is an object of the present invention to structurally, functionally and otherwise improve upon prior art carton construction and, in so doing, to provide one in which manufacturers and users will find their essential requirements and needs fully met, contained and satisfactorily available.

More specifically, novelty is predicated on a carton whose bottom is strong and durable and is characterized by a plurality of overlapping folds or sections which, when united, define an exceptionally strong and reliable leak-proof base.

Secondly, novelty is predicated on a carton construction which is neither too limber nor too flimsy at the top. This result is had through the medium of a truncated pyramidal funnellike pouring neck, a neck which is possessed of inherent properties of stability and strength.

Then, too, further novelty has to do with the stated truncated pyramidal neck whose truncated end or discharge mouth is characterized by a triple-flange lip forming rim which not only adds strength to the pouring neck but also provides a convenient lip to assist in pouring and pitching the milk in an obvious spout-like manner.

What is more, the improved carton has a flat permanently and hingedly attached neck covering lid and the lid has marginal flange means which interlock with the lip means and hood over the latter and promote sanitation.

Other objects and advantages will become more readily apparent from the following description and the accompanying drawings.

In the accompanying drawings, wherein like numerals are employed to designate like parts throughout the views:

2 Claims. ((31. 229-44) Figure 1 is a perspective view of a finished, ready-to-use milk carton constructed in accordance with the principles of the present invention;

Figure 2 is an enlarged fragmentary perspective of the upper neck portion of the carton, showing the construction of the latter and also showing the lid in its open position;

Figure 3 is a bottom vplan view;

Figure 4 is an enlarged cross-section on the line 44 of Figure 1, looking in the direction 0 the arrows;

Figure 5 is a fragmentary central vertical section through the upper portion taken on the line 5-5 of Figure 1;

Figure 6 is a fragmentary sectional and elevational view through the base or lower portion of the carton, taken on the line 6--6 of Figure 4, looking in the direction of the arrows;

Figure '7 is a cross-section on the line 7-1 of Figure 5, lookingupwardly in the direction of the arrows; and

Figure 8 is a plan view of the blank or cardboard pattern from which the finished carton is made up.

Reference is had first to the cardboard or equivalent sheet material blank illustrated in Figure 8. The blank is essentially rectangular in plan view as shown. The main or body portion of the blank is obviously laidout to provide the receptacle portion of the container. are several parallel fold lines and these are denoted by the numerals Hi. These define rectangular panel members which in turn define the walls of the receptacle. The main panel toward the right is denoted by the numeral l2 and the other three panels are denoted by the same numerals, that is the numerals I l, and for convenience these are called auxiliary panels. The transverse fold lines !6 adjacent the lower end of the panels define bottom forming sections; namely, a main bottom section [8 for the main panel l2 and three auxiliary bottom sections 202fl-20 for the auxiliary wall or panel sections M. Diagonal fold lines 22-22-42 define three triangular folding and reinforcing gussets 24. None of these portions are cut but are merely folded into multiple ply overlapping relationship as shown in the finished product. The upper end portions .of the respective wall-panels l2 and I4 have transverse fold lines 26 and the four fold lines shown define a main extension 28 and auxiliary or secondary extensions 3ll-3ll30. These extensions are substantially rhomboidal in shape and are integrally joined by V-shaped connective webs 32. There are three such webs and There each web has a central fold line 34 so that it may be transformed into halves. The web, as a unit, is halved, folded and fastened as shown, for example, in Figure 2. The several extensions 38 terminate in bendable flanges 34 which are bendable on the fold lines 36. These several flanges have end extensions 38 defining connecting tabs. The extension 28 has a fold line 40 which defines a web 42 which is joined with an extra extension constituting the flat rectangular lid 44. The lid has two side flanges 46 cut as shown and a free edge or front flange 48 which is also bendable or foldable and has end extensions U5D defining lid retaining and opening members which may be best designated as finger-grips. Toward the left, the panel or wall 14 has a fold line 52 defining assembling flap means. lower flap is-denoted at 56 and the upper flap at 58. These are joined by small gussets 6D, 62 and fihrespeotively. The gussets provide the necessary take-up folds when the final carton is made up.

In practice, the bottom gussets 2d are folded and tucked in and the auxiliary bottom sections .are.folded in on the fold line H5 at right angles to the body or receptable portion. The manner in which these parts, in conjunction with the main section 18, fold and are fastened is shown in the bottom plan in Figure 3 and also in the companion view from the interior from Figure 4. The main panels are folded at right angles to each other and they, in conjunction with the bottom sections are joined together by the flap means 54 and 56. The V-shaped webs 32 are folded into halves on the fold lines 34 and they are then tucked into the neck portion and are secured adhesively against the interior surfaces of the extensions against which they are folded, as shown in Figures 2, 5 and v7. The finished neck is secured by the attaching flap 53 in an obvious manner. The flanges 38 are folded outwardly at right angles and the tip or end tab 38 will overlap and seal together, as shown in Figure 2. The several flanges on the lid are also angularly bent in the .manner shown and when the lid is closed down, as shown in Figure 1, these flanges interlock with the rim or lip forming flanges 34. The web connection between the lid and the neck portion or extension 28 permits the lid to be folded down and closed and allows the

flanges

46 and 48 to be hooked over and around the perimeter portion of the rim flanges, to thus hood over and protect what ultimately becomes the pouring lip for the bottle or carton; The extensions 505ll are bent up over and sealed against the top surface of the lid when the lid is finally closed.

The entire carton is, of course, coated with paraflin or a suitable grade of wax, as is commonly done in this line of endeavor and the parafiin serves to join and seal the various folded portions together in liquid-tight relationship.

Using the blank shown in Figure 8, it is possible to readily crease and fold the various components so that they unite in satisfactory junctural and carton-forming relationship. Since the blank is a one piece construction, it may be struck out expeditiously and marked so that the various components may be systematically folded, tucked into place and finally transformed into an adequate, highly useful commodity carton. The construction employed lends itself to expedient handling and may be manufactured and sold in keep- The main flap is denoted'at 54, a

4 ing with the economical requirements of the day.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthly description is regarded as unnecessary.

Minor changes in shape, size and arrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

Having described the invention, what is claimed as new is:

1, A cardboard paraffin coated milk carton comprising a vertically elongated rectangular carton having a fiat closed bottom, the upper end portion of said carton having a truncated pyramidal pouring neck, the truncated end of said neck having lateral outstanding flanges joined and providing a lip forming rim, and a flat lid having one marginal edge creased and integrated with a corresponding marginal edge of said neck and hingedly joining the lid with said neck, the remaining marginal edges of said lid having inbent flanges hooked over corresponding portions of said rim and separably interlocked therewith, the flange on the forward free edge of said lid having bendable tabs at opposite ends, said tabs being folded inwardly toward each other and separably sealed to the top surface of said lid, whereby to provide finger-grips which assist in unfastening the lid as a step preparatory to opening the lid and uncovering the pouring mouth of the neck.

2. A sheet material milk carton embodying a flat wall-ed receptacle portion all of the walls of which are provided at corresponding ends with converging trapezoidal extensions, the adjacent vertical respective marginal edge portions of said extensions being inter-connected by centrally creased V-shaped webs, said webs being folded and fastened to predetermined interior surfaces of their respective cooperating extensions and defining and providing a truncated pyramidal pouring neck, the free upper ends of said extensions each having a lateral outwardly bent flange, the end portions of adjacent flanges overlapping and being joined together in seal-proof relation and forming an endless rim, a lid closing the pouring opening of said neck, one marginal edge portion-of said'lid being hingedly connected with one of said flanges and overlapping said flange, the remaining marginal edge portions of said lid overlapping the remaining flanges of said rim, and the latter edge portions of said lid being provided with flanges bent over and then underneath the cooperating flanges of the rim and being thus interlocked therewith.

OSCAR BIOMEO.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,342,769 Selz June 8, 1920 1,372,218 Davidson Mar. 22, 1921 1,811,074 Butler June 23, 1931 1,928,941 Gomes Sept. 12, 1933 2,135,855 Snyder Nov. 8, 1938 2,141,752 Hoarle Dec. 27, 1938 2,398,404 Brooks Apr. 16, 1946 2,437,114 Moore Mar. 2, 194-8 2,483,162 Vivian Sept. 27, 1949 2,572,610 Gilbert Oct. 23, 1951 2,581,237 Casler Jan. 1, 1952