DE1879164U - CURTAIN ROPE AND THE LIKE - Google Patents

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WU7 T 114 * 7/23/63 PATENT Attorney DIPL-ING. H. B. KAHLER

KREFELD, LEYENTALSTRASSE 23

POST CHECK ACCOUNT. FOOD 4oS5

date. July 22, 1963 I / Wts,

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* MY FILE: 63 204

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Wilhelmo Schiffer & ^s ohn KG ·, Holzweiler / Erkelenz, curtain cord.: · And the like ; _i ^

! Inflation refers to a string · that are used to operate cooking, solar ^Stores., Blinds and the like is used, the previously commonly used for such purposes cords exhibit by a thread strand ^ formed soul and a fixed braided around this envelope. Braiding threads. The pad usually consists of cotton threads and forms the soul of the curtain cord; is mostly twisted, twisted, or flocked «While cotton threads were used for a long time for the braiding and covering, this cover was later made from; Made of more wear-resistant synthetic threads.

The known curtain cords of the aforementioned training; are usually in lengths of several hundred; Meter # by machine manufactured ,. This finished cord is then used to operate a section of a suitable length is cut off a single curtain and either knotted, spliced or at its ends sewn together '· A significant disadvantage of the known cords of this kindb is that they are used to produce a closed Loop the ends of the relevant section a; in pure

They must be carefully sewn or pinned together by hand so that the loop can easily go over the curtain rolls etc. is running

In order to avoid this disadvantage, it has been proposed, instead of a single, long, finite cord, to manufacture endless individual cords of suitable length from the start. For this purpose one uses: usually '. · A relatively thick thread made of weldable plastic: for the soul uncleared. the thread, cut to the right length, at its ends to form an endless loop. Then ¹ this loop is braided in the usual way with one or more layers of braiding threads as a cover ¹ Welding together · the core thread must be carried out in a completely separate operation. On the other hand, it allows a finite cord of any length to be easily produced by machine in a single continuous operation.

The aim of the innovation is "to create a curtain cord which combines the advantages of the two known types of cord mentioned above, but without having the respective disadvantages of these types. She has set herself the task; with purely mechanical production of the curtain cord in one continuous operation and still being able to produce curtain cords of the appropriate length in the form of closed loops without manual work. is characterized by its design as a piece of cord that is cut to the appropriate length from a finite machine-made cord consisting only of weldable, synthetic threads and butt welded together at its ends to form a closed loop · known manner the soul of ■ _v "'renewal contemporary curtain cord · from a twisted, gezwirn- /. ten. or braided strand of thread: consist and its sheath

from several layers of braid threads firmly braided around the soul one after the other. From such a finite string. ¹ , which can have an "arbitrary length of, for example, a thousand meters, a section of the required length is cut off and inserted at its ends into guide sleeves of a simple welding device, like that of devices for butt welding wire ends ·· The welding can then can be carried out in the usual way: either fully automatically or by the welder pushing one guide sleeve by hand against the guide sleeve of the other end before and after the cord ends have been welded together: sewing the cord by hand is no longer.' necessary), because both the soul and the pike cover are also made of weldable / synthetic threads and the ends of the cord are butt welded together as a whole Cord: section cut to the appropriate length at its. Ends designed * The welding point is barely visible-. ' and the cord loop at this point, too, practically as flexible as on its other steep sections * load tests have shown that the closed cord loops can withstand a load * of far more than 80 kg without tearing at the welding point, "as the attached one Model also recognize Mß-fc, the multi-layered braided cover sits tightly. On the cord formed by a twisted strand of thread, this can be achieved with the usual machine production: endless cords in one continuous operation without difficulty Also not necessary, according to the known proposal mentioned at the beginning, to soften the core consisting of a single thick thread by heating and then press the braiding threads into the softened core thread, so that this core thread then has grooved or similar depressions on its circumference ., in which the braiding threads are pressed,

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For the production of the curtain cord according to the innovation, most; of the commercially available, weldable plastics in the form: monofilament threads * Depending on the intended use of the cord ¹ , threads made from thermoplastics as well as from thermosets can be used. It is advisable to use threads of particularly high tear-off ability for the cover, in the case of a multi-layer design at least for the outermost layer of the cover and for the cord. * - seele threads of particularly high tensile strength «:

Claims (1)

EA. 47t 11 ^ 2S. 7.63 Sick claims. 1. G-ardinenschnur: -u «. dgH «, the one soul formed by a strand of thread and one firm Tim. this braided cover made of braided threads is characterized by its formation: as a *. Piece of cord, that of a finite-made cord consisting only of weldable, synthetic threads. ¹ cut to the appropriate length and butt welded together at its · «ends to: a closed loop" is ±> 2 <, Grardinian cord according to claim 1, characterized in that that in a manner known per se her soul from a twisted, Twisted or braided strand of thread and its sheath made of several ·, one after the other tightly braided around the core Layers of overhaul threads exist *.