US1540726A - Paper container - Google Patents

Description

June. 2, 1925.

A. MOORE PAPER CONTAINER Original Filed Oct. 12. 1921 l lll [gy ll Patented June 2, l1925.

UNITED STATES ARLINGTON MOORE, OF BOSTON, MASSACHUSETTS.

PAPER CONTAINER.

Application led October 12, 1921, Serial No. 507,370. Renewed September 27, 1924.

T all whom t may concern Be it known that I, ARLINGTON MOORE, a citizen of the United States, and a resident of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Paper Containers, of which the following is a specification.

This invention relates to certain improvements in paper containers of the general 10 type shown in my pending application #336292, in which a conical-shaped body is provided with a reinforced neck, which is internally grooved to receive a cardboard disk or cover.

While a sufficiently tight closure for the container is provided by the disk cover for many purposes, it is not sufficiently tight for some purposes, and the purpose of the present invention is to provide, in connection with the above described type of container, means whereby the container may be hermetically sealed at the time of filling and will remain sealed until such time as it is opened for the purpose of removing its contents.

For an understanding of the means which I employ to accomplish this result, reference if' made to the accompanying drawing in which:

Fig. 1 is a central vertical sectional view of a container showing an embodiment of the invention.

Fi 2 is a similar view illustrating the positlon of the closure prior to final sealing. In the drawing l indicates the conical side-wall of a paper container having a reinforced neck 2 formed from a continuation of the side-wall, said neck having an annular groove formed therein to provide a seat 3 and a retaining shoulder 4 for the cardboard disk closure 5. The bottom 6 is connected to the side, preferably in the manner shown in said prior application.

According to the present invention I provide an inner sealing closure which' consists of a disk 7 having a perpendicular edge-dange 8 formed thereon, the diameter of which, at its edge, is slightly less than the internal diameter of the container at the edge of the seat 3, so that the flange may be readily entered into the container beyond the seat 3, as indicated, but, on account of the inward taper of the side-wall, the fiange will become wedged against the side-wall, immediately'upon the insertion, so that the disk 7 will be supported by its fiange above the l2evel of the seat 3, as indicated in Figure After the container has been filled, the disk 7 will be inserted therein until its flange becomes wedged therein as above described, then the disk 5 will be forced down into the container, and, before its inner side comes into engagement with thev seat 3, it will engage the disk 7, as shown in Fig. 2, so that`further inward forcing of the disk 5 will also cause the disk 7 to be forced inward. As the latter is forced inward, its

'fiange 8 will be forced against the side wall and crowded inward or contracted thereby 7O so that it tapers correspondingly. This continues until the disk 7 is fiush with the surface of the seat and the disk 5 has been pressed into the groove against said seat and be ond the retaining shoulder 4, as shown 1n Fig. l.`

As the inner disk flange Will thus be forced tightly against the container wall it wilv-hermetically seal the container, and, at the same time, the disk will effectively re-inforce the external disk or cover 5 against inward pressure and also against Outward pressure from the contents of the container, as durin shipment. The sealing closure or inner dis 7 and its fiange will ordinarily be provided with a waterproof coating. When the container is Opened, the outer disk may be pried out in the usual manner and removed, and then the inner disk may be removed by cutting it, or otherwise destroying it, after which the outer disk will be used until the contents have been entirely used or removed.

I claim:

1. In a paper container having a re-inforced neck formed to provide an internal disk-receiving groove having a disk-supporting seat at its inner side and a disk-retaining shoulder at its outer side, a Vdisk closure for said groove, and a sealing disk having an ed e flange adapted to fit in the container at t e edge of said seat and to be forced inwardly until its outer surface is flush with said seat, to provide a tight internal closure for the container. 100

2. In a paper container having a re-inforced neck formed from a continuation of the side-wall thereof and provided with a disk-receiving groove having a disk-supporting seat at its inner side and a retaining 110 shoulder at its outer side', and said side-wail being formed to taper inwardly from said seat a sealing disk having an inturned edge flange constructed to fit the side-Wall at the edge of said seat and to he inwardly contracted to correspond to the tapering inner surface of the side-Wall when forced inward so that the disk is flush with said seat, and a. closure-disk adapted to be held in said groove against said seat.

In testimony whereof, I have signed my nalne to this specification.

ARLINGTON MOORE.

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