US1963994A - Paper container - Google Patents

Description

June 26, 1934. E. P. HERRMANN PAPER CONTAINER F iled Sept. 10, 1932 Patented June 26, 1934 PAPER CONTAINER Edmund Paul Herrmann, Orange, N. J.

Application September 10, 1932, Serial No. 632,598

4 Claims.

This invention relates to paper containers such as are described in the application of Elmer Zebley Taylor, Serial No. 570,427, filed 22nd October 1931, and comprising a double-walled conical body in one end of which a bottom is secured. After filling a closure is applied to the other end, and special means were described in such prior applications for subsequently opening the container, consisting in the formation of two weakening lines or indentations around that end of the blank at which the container was to be opened, so that the portion between such weakening lines or indentations could be readily torn out and entirely removed, exposing the contents 16 for use as required.

The object of the present invention is to facilitate the opening of containers formed as described in such prior application, and the improved arrangement is shown in the accompanyinr, drawing, in which Fig. 1 is a plan view of the blank for the body of the container, while Fig. 2 is a side elevation of the upper end of a finished container, and Fig. 3 a similar view thereof when the opening operation has been started. Fig. 4 shows the container completely opened, and the removed end thereof ready to be applied as a cover. Fig. 5 is a view similar to Fig. 2 but showing a modified arrangement. The thickness of the material has been exaggerated in some of these figures to render the construction more clear.

According to the present invention the weakening lines or indentations 1, 2, formed in the body blank 3 are not arranged spirally in relation to such blank, but are parallel to each other and to the edge of the blank at the end A of the latter which forms the outer wall of the rolled-up container, and are then brought closer together at the points 4, 5, and subsequently continue par 40 allel to each other along the inner wall B.

Between the points 4 and 5 a cut 6 is made through the blank, such cut 6 being in such a position that when the blank has been rolled up it is as shown in Fig. 2 slightly outside the outer edge of the outer wall, and so forms a tab which can be grasped when it is desired to open the container. It is advisable to interrupt the weakening lines 1, 2, at the point '7, Fig. 1, which when the blank is rolled is directly opposite the cut 6, to prevent any possibility of the contents leaking through the weakening lines at this point. Such unweakened portion '7 may also serve as a hinge as hereinafter described.

A reference to Figs. 2 and 3 will make the operatlon of the improved arrangement clear. Fig.

2 shows the out line 6 sufficiently outside the outer edge of the outer lap of the double-walled body to enable it to be grasped when the container is to be opened, and by pulling on the tab thus constituted the material will be simultaneously broken along the weakening lines 1, 2 of both the inner and outer layers of the body, so that a double or reinforced strip 8 will be removed, instead of a single thickness strip as was the case in the application of MrfElmer Zebley Taylor hereinbefore referred to. The complete removal of the strip 8 is therefore effected in the present invention by a single turn around the container, instead of twice round, so that a waste strip of half the length is obtained which can be 7 much more easily disposed of than one of double the length. Further there is much less liability for the strip to break during removal, as the narrow inner part is strengthened by the wider outer part, to which it may if desired be secured by the adhesive used in rolling up the blank. The paraffin wax or other material used for waterproofing and sterilizing the container may however be relied on to give sufficient adhesion between the wide and narrow parts of the strip 8.

The wider part of strip 8 may also be merely secured to the parts of the inner layer on each side of the narrow part of such strip by the adhesion of such wax or other material, or by a complete or partial application of a suitable adhesive.

Fig. 4 shows a container formed as above described after it has been completely opened by the removal of the strip 8, and also that the separated upper end with the end closure 9 still in position therein can be used as a cover to prevent the access of anything objectionable to the contents if the latter have not been entirely emptied out. If desired the tearing operation may be interrupted at the point 7 where the 9 weakening lines 1, 2, are stopped, such unweakened portion then serving as a hinge on which the cover portion obtained by the tearing can be turned back to permit access to the contents, and then returned to its original position to act as a cover.

Such Fig. 4 also shows that after the removal of strip 8 a perfectly clean surface is left around the top of the container which, as it has not been exposed to any possibility of contamination is quite safe and suitable for drinking from.

Instead of forming the cut 6 in the position described just outside the outer edge of the outer wall of the body, it may as shown in Fig. 5 be formed immediately inside such outer edge and the latter cut back slightly, as at 10, 11, so that the part between such cuts 10, 11, may be grasped and on being raised will lift with it the tab formed by the out 6.

Although the accompanying drawing only shows the invention as applied to the small end of the container, it will be readily understood that same may if desired be applied to the larger end. In this case when the separated part holding the end closure is used as a cover it will fit over the outside instead of inside the upper end of the con tainer, and will form an eflicient protection against the entry of dust or other deleterious matter into contact with the contents.

The weakening lines or indentations 1, 2, may be produced in any suitable manner. For instance each row may consist of a double line of short indentations in close proximity to each other, the space between the indentations in one line being opposite the centre of one of the indentations in the adjacent line. Another method would be to apply sufficient pressure by means of a scoring rule to perish the paper to a certain extent withoutactually perforating it.

What I claim and desire to secure by patent is:

1. In a paper container comprising a doublewalled body and suitable end closures, the formation of the blank for the body with two weakening lines which are widely spaced in that portion of the blank which constitutes the outer wall of the container and closer together in that part which constitutes the inner wall, and a out being made through the blank at the point where the wider and narrower weakening lines meet, as set forth.

2. In a paper container comprising a double walled body and suitable end closures, the formation of the body blank with two weakening lines parallel with each other and with the edge of the blank in that portion of the blank constituting the outer wall of the body, such weakening lines walled. body and suitable end closures, the provision of means for enabling a wide strip to be simultaneously torn out of the material of the outer wall and a narrower strip out of the material of the inner wall, such means comprising weakening lines or indentations formed parallel with the edge of the blank, and a cut through the material at a suitable point to form a tab by means of which the complete strip may be torn out, as set forth. I

4. In a paper container comprising a. doublewalled bodyand end closures, the formationof weakening lines spaced widely apart in the outer wall and closer together in the inner wall of the body and of a cut through such material to form a tab by which the strip of material between the weakening lines of the inner and outer walls of the container can be simultaneously torn out, as set forth.

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