US2315228A - Tubular container - Google Patents

Description

March 30, 1943.

E. SCHULZ- Y .TUBULAR CONTAINER Filed July 26, 1938 2 Sheets-Sheet 2 Figs 2 Ewe/2.2 0 1 ZZcLSe Q'S'c/ZaZZ Patented Mar. 30, 1943 TUBULAR CONTAINER Elise Schulz, Vienna, Germany;

vested in the Alien Property Custodian Application July 26, 1938, Serial No. 221,464 In Austria July 28,1937

2 Claims.

The invention relates to the shaping and finish of heads and bodies for tubular containers.

The containers met in practice havenearly al. ways a circular or an oval section and a cylindrical shape on account of the fact that with metal, as constructing means, other sections and shapes are well nigh impossible. However, by using a winding process applied to a strip of a suitable material it is possible to produce containers with several corners and to give same the form of cones or pyramids.

According to the invention the sharp or rounded-ofi edges of the containers with cornered section are reinforced by rills or foldings (outward or inward); by increasing the thickness of the walls e. g. by sticking on bands or by making folds in the strip, by inserting cones or flexible rods, by laying on or impregnating with a solidifying material, etc., so that in case of pressure on the container, e. g. in squeezing out its contents, nodeformation will occur which might spoil the aspect. The container section may be irregular, there may be only one plane of symmetry; may be composed of two unequal halves, so as to form a front part distinct from the back part. In this case the back is usually arranged perpendicularly to the plane of symmetry, so that the container may rest on same.

When producing the containers by winding heavier wall thickness is obtainable, so that, the body part may be filled with embossings, rills, impressings, gofierings and the like. This treatment of the container body has the advantage that it may be held in the hand more easily. Between the embossed and applied at the rear to surface. This end is also attained by inserting in the container body an adequate liner. If the embossing, stamping and the like are made on a perfectly smooth surface, a perfectly smooth back is obtained by using a strong and soft strip in several layers.

Conical and pyramid-shaped containers possess the advantage of being more easily stocked and stripped, the packing and transporting costs are lower because they may be piled up to require little space. Furthermore the bodies of such containers are provided with rills or other notches, to prevent a scouring or rubbing action of the container bodies when they are in contact during transport.

The use of a suitable material for producing containers by winding is of the greatest importance. It is evident that paper alone or com-- bined with thin-rolled foils of aluminium, tin or other materials is not sufficient for Withstanding the mechanical and other strains and stresses. Not even impregnation will do in all cases. Better impregnating results are obtained by employing unglued paper if possible.

The material used for the containers must, first of all, be in concordance with the contents so as to be impermeable thereby. Containers holding water. or aqueous solutions are preferably made of rubber which is highly recommendable for its impermeability and elasticity. However such materials cannot be employed alone but only in combination with paper, metal foils, etc. Thereby they meet a. double requirement: On the one hand they will. isolate the contents and protect. the container walls against damage; whilst on the. other hand they also protect the metal foil particularly the harder and brittler aluminium foil which is often used. When pressing, squeezing'and rolling-in. the container, these metal foils easily become loosened because of their hardness and their consequent tendency to porosity. The material added Will avoid these bad qualities by its strength tenacity, etc. Instead of the thin rubber skin mentioned above some suitable materia may beapplied such as a rubber solution, which in winding the body may be laid on interiorly. For certainfillings it is advisable to line the interior of the container with a strongmetal, foil, etc, This lining. may either be. wound together with. the body or be inserted. into the finished body in which latter case it will haveto be given advantageously the exact shape of the latter.

When shaping the shoulder and the neck of the container, the walls should be protected against damage as. far as possible hence it is preferable to replace the stamping process by a spinningprocess. In spinning the body is placed on a mandrel and rotated with it whilst the pressing tool is applied against the body. In the usual stamping process the body stuck on a mandrel remains at rest where the shaping is done by pressure. Before spinning the body of the container is formed into several folds so that the subsequent spinning will yield a uniform development of shoulder and neck. After spinning a stamp is used for smoothing the surface. It is permits dispensing with costly presses and com-' the same time rendering containers of the largplicated tools, while at possible the production of est dimensions, without excessive expense and by means of simple tools.

Special attention should be given to the execu tion of the container shoulder and neck, which are the most important parts exposed ,to the heaviest stresses. it is advisable to employ a cap or a cover, which is placed on the portion of the container where the body is reducedto form the neck, that is on the shoulder. The aspect of the container is thus improved as the irregular folds formed in the reduction arecovered. The rim of the cap or cover leaf may either rest on the shoulder or be made to protrude beyond the adjoining part of the body. In any case it is advisable to sink it into the material of the containenwhich at these spots shows rills, contractions and the like, so that it avoids, or only slightly projects over the surface of the tube body and is not-liable to become loose or damaged. For stiffening this rill, etc., on the protruding part it is contemplated to insert a ring or another staging means. The upper part of the body or the portion of the cap drawn over A j the shoulder or the ring fixed at that place are preferably'knurled or fitted with-an embossed stamping, etc., whereby aresting place is offered to the hand in opening and closing the container.

For reducing the body toward the neck, folds are made in the container material, obliquely arranged in'the radial direction. For smoothing the shoulder made uneven by the folds formed, a filling material such as gypsum,. glue or paste may be introduced into the rills between the folds. I Thecontainers may be equipped with a permanent head, or closing part into which the inner container holding thefilling is exchangeablyinserted and detachably connected. According to the invention the inner container reaches to the neck of the rigid head which eventually overlays the body. The execution indicated renders it possible to pay a special attention to the closing part (stopper) both in regard to the design and aspect. .The stopper may be made to be abe solutely sealing and the cap be fastened to. the body of the container in any manner desired. For the closing part- (stopper) and the cap valuable material may be employed e. g.si1ver and these parts may also be embellished by engraving, carving or in any other manner.

The insert container is connected to the head or stopper and to the outer envelope in a suitable manner e. g. by threads. The threads may be impressed into the container material but it is likewise possible to provide cheap screwing devices made e. g. from aluminium sheets," which are preferably screwed into a threaded part of the closing piece.

The insert container is supplied filled and closed so that drying out is impossible. For'use, the deliveryend of the insert container is opened by piercing. r v

the folds on the g the container body joined to For strengthening these parts of the body and used as cover for the The drawings show various embodiments of the invention:

Figs. 1 and 2 are two embodiments of a several cornered container in cross section,

Fig. 3 is a several cornered conical container with irregular cross section,

Fig. 4 is a conical container with pressed-on neck, I

Fig. 5 is a container with a shoulder reinforced by a cap shown in section,

Fig. 6 is an end view of the arrangement of shoulder of Figure 5,

Fig. (is an embodiment of a permanent head beforeits connection with the container body, Fig.- 8 is a broken elevation, partly in section, of a container with permanent head and with the container head,

Fig. 9 is a container body with permanent head and an outer envelope.

The hexagonal container body as in Fig. 1 has edges reinforced by outer rills i, the container in Fig. 2 having inner rills 2.

Fig. 3 shows a container with several cornered cross section, having only one symmetry plane S, whereby the plane 3 intersecting the plane of symmetry perpendicular to the latter, forming the back of the container, on which the latter will usually rest and which may if desired carry printed instructions. The front face 4 may be employed for advertising purposes.

Fig. 4 shows a pyramidal container on whose reduced end 5' a neck 6, is applied by pressure.

The container body as per Fig. 5 carries on the body a cap 9 constituting a reinforcement folds 'I. The rim of the cap 9 terminates at the upper portion of the body near the shoulder l0 and is recessed into the container body, the latter forming a protruding rill H which is flush with the cap rim. Into that rill a stiffening ring may be inserted. On the lower portion of the figure the rim I2 of the cap 9 is slightly drawn down over the rim between shoulder and container body and is likewise set into the container body so that the cap rim and the body form one single plane. The rim I2 is preferably knurled so as to enable the container to be firmly grasped when operating the closing device. I The permanent container in Fig. 7 shows a permanent closing piece or head |I made from a more solid and-if desired valuable material, which on theneck is provided with outer and inner threads, the outer threads l2 for screwing. on the closing piece and the inner I3 for fixing the insert container body 14 introduced from below in the direction of the arrow, the insert container body being provided on the neck 15 with a threaded aluminium ring IE to cooperate with the threaded portion IS.

The second embodiment of the permanent container (Fig. 8) consists of ahead l5 and the. insert container body [6' which is screwed into the threaded part l8 of the head [5 by means of threaded ring I]. The insert container [6 is to be tightly sealed by a permeable piece I9 to, be pierced when desired. 7 I In the permanent container as per Fig. 9 an outer envelope 2| is screwed on to the permanent head I l to which head the insert container body 14 is secured. The outer envelope consisting of three parts telescopically displaceable in respect to one another so that it may at any time be adapted to any decreased length of the insert container as to protect thelatter against dam.- age, etc.

I claim: formation of the body, being folded in external 1. A container including a body having a conipleats on the upper end of the body, and an end cal end and formed with a peripheral recess besection of relatively rigid material conforming low such end. and a head section of relatively in shape to the upper end of the body and seated rigid material conforming in shape to the end 5 in a recess in the body formed below the upper of the body and seated in the recess in the body end to prevent projection of the end section beto prevent projection of the head section beyond yond the outer plane of the body below such secthe outer plane of the body. tion, the end section overlying and concealing 2. A container having a body made up of elasthe pleats. tic impermeable material, the material of the 10 ELISE SCHULZ.

body in excess of the material required for the

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