DE469043C - Rubber hose pipe wire, especially for permanent installation in places and acidic and alkaline rooms - Google Patents

Description

GERMAN EMPIRE

ISSUED November 29, 1928

REICH'S PATENT OFFICE

PATENT LETTERING

CLASS * 21c GROUP

Patented in the German Empire on October 8, 1924

The tubular wires previously used in electrical systems are only in dry rooms durable. When laying in damp rooms, in pits or in stables, in chemisehen or similar companies are such tubular wires after a short time because of their unsuitable structure unusable. In rooms that contain ammonia, chlorine or acid fumes and the like, this destructive influence on the line significantly increased.

The invention relates to rubber hose tubing wires, especially for solid ones Laying in stables and acidic rooms, where in contrast to the previous one used steel armored pipe with drawn-in lines, cables or the like. A condensation is excluded and the harmful effects of moisture, Able to withstand acid vapors and the like. The invention consists in the fact that the insulated lines, z. B. rubber wires, are encapsulated with another rubber jacket, which the

“5 completely fills the inside of the surrounding metal jacket, and that this metal jacket surrounded by alternating layers of impregnation compound and paper or fiber material or the like is. The insulated lead wires are in this case in the common rubber jacket completely airtight and watertight. According to the invention, a with is used as the outermost layer above the metal jacket Mass soaked braid used.

There are already known lines whose cavities are filled, but is for Filling either does not use rubber so that they are hygroscopic, or else they do the lines are embedded bare in the common rubber jacket, so that they are badly centered and with time or can come into contact with the metal jacket in the event of sharp bends. aside from that the cavities are not as completely filled as this by a Overmolding of the lines with rubber can be achieved according to the invention.

As a particularly suitable acid-resistant impregnation compound for covering the paper layers and to impregnate the outer braid Jiat is a mixture of Trinidad Epure, Petrol goudron and soft paraffin result.

For special cases, a lead jacket can be placed above or below the metal jacket be applied. One or more layers of this special mass are then placed over the metal or lead jacket and paper arranged, with the last layer

*} The patent seeker stated as the inventor:

Otto Bodemann in Berlin-Charlottenburg.

Again, a braid impregnated with this impregnation compound is advantageously used can be.

In systems with a neutral conductor, it is advantageous to place under the metal jacket or between Metal sheath and lead sheath to lay a neutral wire. This neutral wire stands with the metal jacket or metal and lead jacket in conductive connection and can on

ίο the entire length of the pipe or on only part of the length can be laid in a straight line or in turns. In this way the advantage is achieved that one less insulated conductor in the rubber hose pipe wire needs to be included. The diameter of the pipe can therefore be smaller be chosen, the investment costs are reduced.

Three exemplary embodiments of the invention are shown in the figures. In Fig. Ι α are two insulated wires and b the rubber cover, in which the conductors are embedded airtight, c is the metal jacket; d is the neutral wire, which is inserted between the rubber filling and the metal jacket and is conductively connected to the metal jacket. One or more layers of impregnation compound e and paper insulation f are alternately placed over the metal jacket, g is the outer braid impregnated with insulation compound.

In Fig. 2, α is an insulated wire, b the rubber filling, c the metal jacket. The lead jacket h is also arranged around the metal jacket. The neutral wire d is inserted between the metal jacket and the lead jacket , e are several layers of impregnation compound; / are again the paper layers; g is the outer braid soaked with insulating compound.

Fig. 3 shows the same arrangement as Fig. 2, with the difference that the rubber filling b is first surrounded by the lead jacket h and only then by the folded metal jacket c . In this example, the neutral wire is inserted between the rubber filling and the lead sheath.

Claims (5)

Patent claims: 1. Rubber hose pipe wire, especially for permanent installation in stables and acidic and alkaline rooms, characterized in that the insulated conductors, e.g. B. rubber wires, with a further rubber jacket are encapsulated, which completely fills the interior of the metal jacket, and that this metal jacket is surrounded by alternating layers of impregnation compound and paper or fiber material or the like. 2. Rubber hose tubular wire according to claim i, characterized in that the metal jacket surrounding the rubber filling is also made from a lead jacket and then alternately from layers Impregnating compound and paper or pulp and the like is surrounded. 3. rubber hose pipe wire according to claim i, characterized in that it first from a lead jacket and only then from a metal jacket and alternately - Surrounding layers of impregnation compound and paper or fibrous material and the like is. 4. Rubber hose pipe wire according to An-Spruch ι to 3, characterized in that that the last layer consists of a braid soaked with impregnation compound. 5. Rubber hose pipe wire according to - Spruch ι to 4, characterized by the Use of an impregnation compound consisting of Trinidad Epure, Petrolgoudron and soft paraffin. 1 sheet of drawings