US2019160A

US2019160A - Flexible container

Info

Publication number: US2019160A
Application number: US684188A
Authority: US
Inventors: Semsch Franz
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-08-12
Filing date: 1933-08-08
Publication date: 1935-10-29
Anticipated expiration: 1952-10-29

Description

Filed Aug. 8, 1933 3 Sheets-Sluel 1 Jn V612 for:

Oct. 29, 1935. F. sEMscH 2,019,160

FLEXIBLE CONTAINER Filed Aug. 8, 1953. s sheets-sheet 2 Oct. 29, 1935. lF. sEMscH 2,019,160

FLEXIBLE CONTAINER Filed Aug. s, 1953 3 sheets-sheet s .712 venan' Patented Oct. 29, 1935 Application August 8, 1933, Serial No. 684,188 In Germany August 12, 1932 7 Claims.

The object of the invention is to obtain a diaphragmatic container which remains as far as possible unaffected by the peripheral stresses which usually render metallic containers of this kind very short lived, and the invention consists essentially in forming the container from a pair of hollow-pressed, elastic metal plates interconnected at the edges and formed with radially disposed, elongated bulges bounded by folding lines 1o and adapted to act as bellows for taking up the peripheral stresses.

Figs. l and 2 of the accompanying drawings are diagrammatic views at right angles to each other illustrating the principle of the invention,

l5 Fig. 3 is a transverse section of a container constructed according to the invention,

Fig. 4 is a fragmentary plan view of the container,

Fig. 5 is a fragmentary plan view of a modied form of the container provided with electric driving elements,

Fig. 6 is a cross-section of Fig. 5,

Fig. 'l is a fragmentary plan view of a further modification of the container,

Fig. 8 is a perspective view of this container slit open along creases, and

Figs. 9-12 are sectional views illustrating different uses of the container.

In Figs. l and 2four trapezoidal plates I' are assembled so as to form a truncated pyramid. If this pyramid be flattened out, the plates will spread apart and form between them radial, triangular gaps 2 as shown by dotted lines in Fig. 1. In a container comprising surfaces having the shape of the plates I, the gaps 2 are, according to the invention, bridged by bulges composed of plates pressed so as to form a plurality of triangular facets disposed at an angle relative to one another; adapted, similarly to the folds of bellows, to expand and contract so as to enable the surfaces I to overcome the peripheral stresses and to be deflected without material bending for changing the shape of the container.

In Figs. 3 and 4 a container is illustrated comprising two hollow pressed plates which are interconnected at the edges and formed with substantially flat surfaces 3 and intervening radial bulges 4. The latter are bounded by folding line 5 along which the material bends on the container being expanded and contracted, the peripheral stresses being taken up by the bulges so that the surfaces 3 can be deflected while retaining a at shape. In order to increase the elasticity of the bulges the latter are preferably extended beyond the main body of the container so as to (Cl. 10S-148) form radial arms 8 which taper to an edge or to a point at appropriate terminals for the bellows.

If the container is to be subjected to considerable internal pressure, the surfaces 3 may be provided with reinforcements 1 either in the form of 5 .pressed ribs, direct thickening of the walls or by the application thereto of separate reinforcement plates. Further reinforcements may be provided in the form of radial bars 8 which are hingedly connected in pairs at the outer edges of the con- 10 tainer, as shown at 9, and which engage by means of rollers I0 under flanges II provided in the centre at both sides of the container.

In the arrangement shown in Fig. 5, the at surfaces I2 are somewhat restricted, and the 15 bulges I3 are correspondingly widened and extended to form broad-tipped, radial arms III.

For pumping or like purposes the container may be conveniently operated by means of electromagnets which are mounted on one side of the 20 container for co-operation with armatures applied to the other side. In the arrangement shown in Figs. 5 and 6 electro-magnets I5 are applied in this manner to the ila'tssurfaces I2 as reinforcements for the latter, and another magnet 25 I6 is arranged in the centre of the container. Reinforcement plates I1, applied to the flat surfaces at the opposite side of the container, are adapted to serve as armatures for the magnets I5,

rand a anged connecting member I6 arranged 30 in the centre of the same side serves as armature for the magnetv I6.

The container may take other forms than those so far described. Figs. 7 and 8, for instance, showan arrangement wherein radial bulges I8 bounded 35 by creases I9, are arranged close together without intervening surfaces. I

In all instances the bulges vare preferably pressed so as to form, as best shown in Fig. 8, a. plurality `of triangular facets.

Fig. 9 illustrates the use of a container such as described in a device for regulating the automatic valve of a small refrigerating machine. The valve V is controlled by a coil spring F which encircles the hollow valve stem V' and bears at one 45 end against a ange on the stem and at the other end against a casing A in which the valve seat is formed. The valve stem bears again st a flanged sleeve R which encircles the spring and which is controlled by an annular member M having an 50 external screw thread by means of which it engages and can be turned in a carrier ring U for an axial adjustment of the sleeve. The ring U is secured to a frame N which also holds the casing A as well as a pipe connection C through 55 which the iluid controlled by the valve is led away. 'I'he sleeve R is arranged between two flexible containers B constructed according to the invention, the containers being in communication with the uid space'. 'I'he upper container has one side connected to the sleeve and the other side to a flange on the pipe connection C. The lower container has one side connected to the sleeve and the other to the casing A. Any movement of the sleeve for regulating the valve V results in an expansion of one container andin a corresponding contraction of the other container. Thus the containers compensate one another so that no variation in internal pressure will be produced by an adjustment of the sleeve through the medium of the controlling member M. It should be noted that no packing gland is required and that the iluid space of the valve structure is hermetically closed by the containers so that leakage and loss of gas and pressure will be entirely avoided. At the same time there is no need for any lubricant by which the refrigerant might be contaminated.

In the arrangement just described, the spring F is arranged within the iluid space. Fig. 10 shows an arrangement wherein the spring is arranged outside the uid space. The containers B are connected to flanges on the valve stem R', and the controlling ring M has a ilange which takes the thrust of the lower end of the spring.

Fig. 11 shows a device for operating a valve V" arranged in a' pipe conduit. The valve casing comprises two ilanged end members yX and Y and an annular shell M" which holds the end members bymeans of a rib and groove connection E allowing the shell to be rotated by means of a hand wheel. The valve casing V" is pivoted to a hollow stem R" which passes through and is secured to a screw threaded member W arranged between two containers B constructed according to the invention. 'I'he containers compensate each other and are connected at one side to the end members X, Y of the valve casing and at the other side to the body W. The-latter engages in a screwy threaded nut carried by the shell M" by the rotation of which the valve can be opened and closed.

Fig. 12 shows a container constructed according tothe invention employed in a tap valve as a substitute for the packing gland. The valve cone V3 is pivotally suspended from a link D which in its turn is pivoted to a -anged cup G which is rotatably coupled to a screw spindle H carried in n a yoke K and tted with a hand wheel. 'I'he yoke K is mounted on the valve casing L. The link D passes through the container B which is connected at one side to the cup G and at the other side to the valve casing L. 10

I claim:

1.' A collapsible container comprising a pair of hollow pressed, elastic metal plates interconnected at the edges and formed with radially disposed elongated bulges bounded by folding lines and 15 adapted to act as bellows and take up peripheral stresses.

2. A collapsible container according to claim 1 'wherein the bulges are extended like arms beyond the body portion of the container.

3. A collapsible container according to claim 1 wherein the bulges are pressed so as to form a plurality of triangular facets.

4. A collapsible container according to claim 1 wherein the bulges are separated by substantially 25 ilat surfaces.

5. A collapsible container comprising a pair of hollow pressed, elastic metal plates interconnected at the edges and formed with radially disposed. elongated bulges bounded by folding lines and separated by substantially fiat surfaces, andyreinforcements applied to the ilat surfaces.

6. A collapsible container comprising a pair of 'hollow-pressed, elastic metal plates interconnected at the edges and formed with radially dis- 35 posed, elongated bulges bounded by folding lines and adapted to act as bellows to take up peripheral stresses, centrally disposed, offset ilanges on said plates, and radially disposed reinforcement bars hingedly connected in pairs at the periphery 40 of the container and engaging with their free ends under said anges.

7. A container as claimed in claim 5 wherein the reinforcements at one side of the container are constructed as electro-magnets, and those at 45 the other side as armatures for said magnets.

FRANZ SEMSCH.