US2275449A - Container - Google Patents

Description

Patented Mar. 10, 1942 CONTAINER Donald G. Magill, Great Neck, N. Y., assigner to American Can Company, New York, N. Y., a corporation o! New Jersey Application December 8, 1938, Serial 16,244,684

(Cl. 22S-4.5)

2 Claims.

The present invention relates to containers or cans made of ilbre or the like and has particular reference to a double wall construction which will withstand rough handling and which is greaseproofed so that it will hold oily compounds or greasy liquids and me like.

An object of the invention is the provision of a fibre can for motor oil or the like which will be leakproof and which will withstand rough handling incident to commercial filling, shipping, storage and subsequent handling.

Another object is the provisionl of such a fibre can which may be manufactured at a low cost and on high speed equipment which is already in existence.

Another object is the provision of a fibre can of this character which may be readily opened for dispensing of its contents and which at the same time cannot be tampered with without spoiling the can for further use.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which. taken in connection with the accompanying drawing, discloses a preferred embodiment thereof.

Referring to the drawing:

Figure 1 is a perspective view of a container embodying the instant invention, with parts broken away and shown in section; and

Fig. 2 is an enlarged fragmentary sectional view of an upper corner of the container shown in Fig. l.

As a preferred embodiment of the invention the drawing illustrates a fibre container designed to hold motor oil or the like substance. The container comprises two tubular members one within the other, a cheap strong oil-proofed can element A which is adapted to carry the motor oil contents and a stronger outer protecting shell B which completely surrounds the inner can and provides for a dead air space between the side walls thereof.

The inner can element A includes a cylindrical tubular body II preferably of the spiral wound type. Such a body may be constructed in the manner disclosed in my United States Patent 1,689,593, issued October 30, 1928, and relating to Process and apparatus for forming greaseproof fibre containers. wound can body is usually made of cheap chipboard material I2 having applied thereto a greaseproof compound I3 which is interposed between the spiral fibre layers of the body. The inside of the body is lined with glassine or parch- Such a spirally y ment paper I4 which is also spirally wound in place. A

By the term grease-proofing compound" I intend any known material or compound (not paramn) suitable for application to a layer of the ilbre before it is wound into a body and which is not affected by grease and which therefore serves as a proof against the same. By

' grease-proofing and greaseproofed I mean proof against permeability by grease.

To this spiral body II there is applied substantially fiat fibre top and bottom inner end members I G each having a peripheral ange I1 which extends substantially at right angles thereto and adjacent the outer surface of the body I I to embrace the latter when the end members are on the body. These inner end members are preferably lined with glassine or parchment paper and are coated inside and outside with a greaseproong compound. The end members are secured to the body with a suitable adhesive.

The top member I6 is provided with a centrally located hole or aperture I8 which is used for filling the contents into-the can. Before filling, however, the entire can. inside and outside, is coated preferably with wax such as paraffin IB. This coating covers the edges of the inner members and the material around the hole I8 as well as the fiat surfaces and thereby provides a ilexible homogeneous and leakproof film overthe entire inner can.

The outer protective shell B includes a cylindrical outer tube 2| preferably made oi strong, cheap, kraft paper and is wound in a laminated style having preferably iive layers or laminations which are bonded together by a suitable adhesive. The inside diameter of this outer tube is preferably a trifle larger than the outside diameter of the flange I1 of the inner can end members. The bottom edge of the tube is bent inwardly in an edgecurl 22 and a bottom disc 23 of the same kraft material is inserted in the tube so that it rests on the edge curl as shown in Fig. 1.

After the inner can A -is filled it is pushed into the outer shell B until its bottom rests on the bottom disc 23. In this position the inner can fits snugly within the outer shell, there being a space 24 between the body walls which is substantially equal to the thickness of the inner end member flanges l1. It is this space 24 which constitutes the dead air area.

While in this inserted position a greaseproof compound 25 is applied to the inner top member I 6 around the filling hole I8 and a disc 26 of glassine or parchment paper is superimposed over the hole. A top disc 21 of heavy kraft paper is then inserted over the glassine or parchment disc 26 and the upper edge of the outer shell 2| is bent inwardly over the disc in an edge curl 28. This completes the container.

It has been found that a double wall container of this construction has remarkable strength for withstanding rough treatment during shipping and other handling tests. One such test which several filled containers of this construction and of one quart capacity has satisfactorily endured, was that of being tumbled in a seven foot tumble barrel, having successfully survived one hundred four walls without showing the least damage or leak whereas filled containers of usual constructions broke down very soon.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts Without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A nbre container for oily substances and the like comprising a tubular inner greaseproof fibre body, greaseproof iibre top and bottom members secured on said body, each of said end members terminating in a peripheral angularly extending iiange portion embracing and secured to said body to constitute an inner container, said top member having a filling hole therein through which the contents is illled, a leakproof disc of a diameter substantially that of the top member engaging said top member over said lling hole, and an outer heavy tubular fibre shell in telescopic assembly with said inner container after the latter has been lled and sealed and slidably inserted therein, the opposite ends of said outer shell being turned inwardly in reenforcing edge curls respectively abutting against the marginal portion of said disc at the top and against the opposite end of said inner container and forming the sole means for holding the latter with its lled contents against movement relative to said outer shell, whereby to provide a reenforced double container to protect the inner container contents against rough handling during shipment and storage.

2. A fibre container for oily substances and the like comprising a tubular inner greaseproof fibre body, greaseproof bre top and bottom members secured on said body, each of said end members terminating in a peripheral angularly extending iiange portion embracing and secured to said body to constitute an inner container, said top member having a lling hole therein through which the contents is filled, leakproof discs of a diameter substantially that of the top and bottom members respectively engaging said top member over said filling hole and the opposite end of the inner container, said body and end members having a leakproof sheet lining on their inner surfaces and an outer surrounding impervious coating of waxy material on their exterior surfaces, and an outer relatively heavy tubular fibre shell in telescopic assembly with said inner container after the latter has been lled and sealed and slidably inserted therein, the inner surface of said shell being spaced outwardly from the outer wall of said inner body by the aforesaid iiange portions of said end members to provide a dead air space between the inner body and the outer shell, the opposite ends of said outer shell being turned inwardly in reenforcing open edge curls respectively abutting against the marginal portions of said discs at opposite ends of said inner container to cushion the latter against shocks and forming the sole means for holding said inner container with its filled contents against movement relative to said outer shell, whereby to provide a reenforced double container to protect the inner container contents against rough handling during shipment and storage.

DONALD G. MAGILL.

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