SU8001A1 - A method of making elastic semi solid tires - Google Patents

Description

The present invention is a method of manufacturing semi-continuous tires, mainly such tires, whose hollow space is surrounded by a uniform rubber mass without adhesions and open slots, and this mass is subjected to a process of ventilation on the full surface of the rim.

To this end, the present invention achieves the fact that powdered, preferably self-priming substances that do not change position under the influence of pressure and high temperature are used to fill the tire's hollow space; Examples of such substances are: talc, graphite, etc.

The powder to be filled, after the vulcanization process of the tire on the rim, is blown through the small holes in the latter.

Tires obtained in this way have excellent technical qualities, such as, for example, strength and tightness of the rim.

Use in tires of seph powders from powdered substances itself

It is known in the form of pre-prepared, by means of some kind of a means of holding, segments of sand, which are embedded in a rubber casing, which is provided from the inside with the entire width of the slots.

In accordance with the foregoing basic idea of the invention, the latter proceeds from the peculiar process of creating the rubber body by itself. the process of making it known to itself in such a way that the hollow core is first made of rubber, and around the latter, the side and top surfaces of the tire, after which all these parts are jointly subjected to a vulcanization process.

On the enclosed drawing, schematic representations of examples of tire making according to the proposed method are given, with FIG. 1 is a cross-section of the tire; FIG. 2 is a reduced scale portion of the linear primary material; FIG. 3 is a section through this material along line A - B in FIG. 2, FIG. 4-cross section of a tire made

in another way, FIG. 5 side view of this tire; FIG. b - cross section of a tire made by the method.

The tire a (Fig. 1), for example, has a hollow space of a triangular third shape.

According to FIG. 1-3, first produced, for example, by spraying or overlaying layers, an open, rectilinear rubber body, with a cross section as in FIG. 1 with a hollow space b. The hollow space b is densely filled with a powdery mass that does not form lumps, as, for example, talc. While filling, the still rubber body that is still relatively sensitive is best kept upright on a board or the like, and shaken to allow the powdered mass to be tamped. It can also be compacted mechanically. Such packing does not expand and does not change its position when the initial pressure from the shell is uneven.

At the end of the stuffing process, the resulting body, a bar shape, is bent and ringed by a known method with an oblique or other seam in a lining or a seam and is applied to the rim, and then undergoes a vulcanization process. At the same time, the packing with does not close the hollow space and even with uneven pressure from the side of the compressible shell does not wrinkle and does not move.

After the vulcanization process, the gasket is removed, i.e., by means of pneumatic pressure or suction, through the holes in the rim or other of the parts under the tire that do not harm the manufactured item.

Since experiments with massive tires showed that the pepper shchi, which is inevitable in the formation of a diamond, represents a dangerous place, the new method is mainly carried out according to the images in FIG. 4-6.

At THIS, the base of the tire, generally designated by the letter A (Fig. 4), is first of all manufactured in this way, filled and closed in a ring with a transverse seam. Thereafter, the layers are spirally wound over each other and, therefore, without transverse seams, e. This is achieved. Reliable overlapping and adhesion of the transverse seam at the base of the tire is achieved.

However, in view of the fact that the closure of the tire base into the closed ring is still a great difficulty, it is recommended to proceed as follows.

First of all, the middle part / bases are made with cavity b (fig. 4), having, for example, a quadrilateral section. This part is comparatively ae difficult to close into a closed ring. Thereafter, the side segments of the trapezoidal section, which can also be in the form of straight pieces, can be thrown and then closed into a ring on both sides of this middle part. The resulting transverse schv / d IfH (Fig. 5), in these layers must be offset around the circumference relative to each other, so that each seam was covered for more strength adjacent adjacent strip.

Of course, the base of the tire can be made up of a larger number of layers.

With such a partial production of a tire, since the individual strips have a cross section in the form of a simple figure, the latter fit well into a solid basement (fit) to each other and can be tightly pressed.

The manufacturing method of FIG. 6 differs from the method of FIG. 4 in that, instead of the side stripes obtained by spraying d, the latter are obtained from spirally wound layers g.

For such tires, you can use perfectly normal rims.

FIG. B schematically shows a rim k, consisting of one part, which is connected to the tire by means of an intermediate section made of hard rubber. Spike produced by the process of vulcanization.

The big advantage of these new tires is that they have a cavity all around the homogeneous mass of rubber that does not have cracks even in the inner walls, which, in accordance with this, has great strength during the vulcanization process for imposing on the rim and, therefore, of particular strength, is superimposed by a large and continuous surface. Thanks to this, a firm tire connection with the rim is guaranteed.

The few small holes that are necessary to blow out or flush out the core can then be hermetically sealed without difficulty, so that the air in the cavity cannot get out of it and will contribute to the spring action of the women.

It is even possible to pump air or gas into the tire through one of these openings, so that something like a pneumatic tire will be obtained. It would be much more difficult, if not impossible, to achieve all this with tires with holes in the base or inside.

.. The subject of the patent.

1. A method of making elastic semi-continuous tires by filling the cavity of a rubber body, subsequently removed through the holes, with a rubber body obtained by applying layers, etc., characterized in that the cavity b in the rubber body a is filled with a powder mass by massing under the influence of pressure and high temperature (talc, graphite, etc.), after which the rubber body is vulcanized (Fig. 1-3).

2. A variation of the method described in paragraph 1, characterized in that first the middle part I is prepared (Fig. 4), which, after being closed into a ring, is lined with side stripes g and g of trapezoidal section and finally is surrounded by a ring of The layers e, e ... spirally wound on each other, with the transverse seams of the 7th, K and / 4 (Fig. 5) parts f to g being arranged in a checkerboard pattern.

3. Change of the method described in paragraph 2; characterized in that the sidebands are formed from spiral-wound layers g, g (Fig. 6).

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