DE1560228A1 - Improved cord as an insert for objects made of elastic fabrics and process for its manufacture - Google Patents

Description

AIfow Situ XfIIl ₉ B ** ti «if * ·· * 83

Gotfd ale Eialag * Fabric »load V« rfahr «o « » » On *

The invention relates to a cord with a very specific structure and specific properties, which is used as a stiffening and reinforcing insert in objects made of elastic materials, in particular those made from automotive tires and V-belts. The invention also empowers you with methods for producing such a cord,

Objects made of @ laefiach6E fabrics »the dji & as & isGheE stresses below roiCaa would, in particular, be wedge» rieaen and ^ ear-gripping »sstiasen as a rule provided with inserts ^ so that their stretching does not reach too great an extent during their use. Textiles are sometimes used as insert material,

It has also been suggested that such inserts, especially for vehicles, be made from natural or ktinatli * - shsn Eelluloaefasem. As long as the dynamiachen stresses of such a tire are small _t © ine such deposit meets the demands placed on them Bur full satisfaction. On the other hand, I give up for one

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There is considerable deficiency in this case, in this case the tread moves under the effect of centrifugal force outwards, a movement that the insert cannot follow. The strong in high-speed tires through flexing The heated composite layer between the running surface and the reinforcement insert is overstressed »so that it becomes The tread becomes detached from the reinforcement insert, especially when operating periods and downtime periods follow one another in frequent alternation. It is significant that the detachment occurs particularly at those points on the tire circumference where the tread is particularly thick, i.e. especially in the area of the lugs. At these points the composite layer, which is mostly made of art * Resin exists, also weakened by the fact that the increased thickness of the barrel surface causes a greater amount of water to build up and the resulting higher temperature Plasticization of the composite layer caused. With a detachment of the running cover from the reinforcement insert is for the Motorists connected a significant Grefahren moment. at other objects, such as! change and thus an operational disruption and disabled persons Operating costs with it.

In order to avoid this difficulty in detaching the barrel cover It is suggested that the reinforcement insert be used wordm, use a cord «u for the reinforcement β insert.

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. which, for example, afcis'Polyanad «d & s.-in the form of-fibers is known under the Mem trade name nylon," is made. In the case of low dynamic loads, even a tire reinforced with polyaadecord does not pose any difficulties the Y / poor of the modulus of elasticity of the Pblyarnidfaseiia generated especially in the composite layer. " The parts of the reinforcement insert which are located directly under the tire's outer surface and are referred to as the raceway heat up fastest a protector located belt ply in Ümfängsrichtung oriented IETT is-the belt el insert fastest and most heated · by this Erwäfiqung koini © s zn a yielding of the reinforcing insert in the gl © l © Lia UoMuSg _5, in which the Laufde'cke by the centrifugal force wirö pushed _a under the action of air pressure in the tires but are also the.. stretched the race subsequent portions of the side walls of the carcass. so the hot Mileage yearn! current tires grows and gains a large £ eres volume without it the dangerous detachment The dock comes from the reinforcement insert, because the latter grows with you. Difficulties arise with the reinforced with polyamide cord

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Tire only when it is parked after warming up and cools down. While the carcass now shrinks evenly in all exposed bearings of the tire and at the rate at which the tread cools, this is not possible in the area of the standing area loaded by the weight of the vehicle, which is also known as the floor ellipae. In this area, as the cooling progresses, the deformation of the tire caused by the weight pressure of the vehicle remains, so that a uniform shrinkage of the carcass is not possible. The reinforcement insert therefore solidifies in the deformed state, as a result of which the tire becomes out of round. This condition, which comes from the English technical term ale "flatspotting * ¹ ", results in a bumpy run of the tire when starting up again and this so-called "beating" of the tire continues until it is warmed up again wherever - »can compensate for the deformation of the floor ellipse due to the softening of the cord of the reinforcement insert. Tires with such reinforcement inserts cause, even if they were originally perfectly balanced, the vehicle to vibrate violently when driving, which is very annoying and the safety of the steering of the vehicle is impaired, moreover, this phenomenon increases

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Wear and tear that affect the economy such heat has an unfavorable effect

In "LnetB Reif, en which the carcass odLt Kylortcord iet reinforced _v occurs this so-called" freeze * ¹ if the hot Mileage brawling,! Reached its reinforcement insert a rule when driving fast temperature "of about ICO ⁰ C, ale less about 47 ° C, άϋη ebkUhlt second transition point of fcoiyaiuids _B. the "flat spotting" disappears at DIESET »soaps again until © r some tent on leaperaturcn öbexhalb is waragefahren 47 ° C. This condition can, but at the übiidien operation of a vehicle often only longer 2 ei * after the occurrence of the "flatspotting" are fulfilled, from which the mentioned © deterioration of the VIrtscaaftüdikelt eimeti such hips results.

According to the most recent knowledge, Ben can thereby achieve an improvement in liability or a somewhat longer service life? ä & B © 1s reinforcement insert a cord verweMat wivü _? ά®τ aum mel yarn is twisted, - the cheoäsohen and phyeikalieuhüi lägmBdäatt & B. Saber, however, no significant improvement in the "flatspotting" is achieved.

Furthermore, cords were vovgfi * aüMg € ä , in which twisted Teoctilfaden are stueätslioh or a or textile thread are wrapped, the latter as a stringer for a guKDiifreundlichee Vorhehandlttngsiiiittei. to serve. ** Flat spotting "cannot be prevented with the help of these cords.

The mentioned Vsrgru & erui " % wä V / i <idenrerkleinerii" g 4 @ e tire circumference can be done very often with a soap seed Rylonoordeinlage, without an inner 3 "shüääähn

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Tire © and a weakening of the rubber oord composite it happens, This phenomenon is known as the "hit ventilation" of the tire is of great importance for a good durability of the tire · Oils generally cause a certain superiority of the nylon tire over other tires, which with « for example are stiffened with rayon cord, especially for Fast moving vehicles · Regardless of this, however, had to have always been accepted with tfylon cord tires so far, that of helping in the course of the operation is increasing sustained elongation, which increases its rolling resistance · This affects the fuel consumption of the Vehicle and the wear and tear of the tire cover unfavorably. <

Reinforcement insert! have been reinforced so far depending on the intended use of the. Item mostly from Oord made of cellulose fibers or thermoplastic synthetic fibers manufactured. Door specific Zweoke were in vehicle tires, so-called composite tires, some layers of cellulose cord and some layers of plastic cord, if necessary also additional inlays made of steel wire, built in · Saber was the sequence of the various layers lsi made a desired order · It was also made proposed to further improve the mechanical properties of the tire the direction of the cord in the individual successive reinforcement inserts to the

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Place the next inserts at different angles. The aim of such an analysis of veritable deposits In tires, however, the avoidance of "flatspotting" was not an option. undoes is the avoidance of this appearance from physical Reasons by such a tire thaw even unavailable"

The task of the invention is to find »objects to create from elastic fabrics reinforced with inserts, which have the beneficial properties of "heat breathing" and have an extended life and at the same time the previously existing disadvantage of the "flatspottiag" not demonstrate. It has been found that this can be achieved in this way loud that as a reinforcement insert a certain novel Cord is used »

The cord according to the invention, showing this favorable combined effect, is characterized in general by ₈ that it is formed as a spiral thread and has a force · * Behnungi-Verformungecharakteristik, the ipt hinaiohtlioh Let recording progressive.

In the case of a tire reinforced with the cord according to the invention, the forces that occurred with low boana stresses and the forces are practically exclusively absorbed by one of the spiral threads, while the forces that are subjected to higher stress are almost finally absorbed by another. with the exception of this, the first component in the h @ h @ rim was completely or at least very largely

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and in this way a deformation of the same in front of one conditional stretching protects.

The properties of the cord according to the invention for its use as a reinforcement insert is even cheaper if the components that make up the spiral thread * are chosen so * that its force-Dehminga deformation characteristics are also pure in small load ranges elaetisoh is »In this embodiment, a" flatspotting "in the entire load area is one with this Cord reinforced tire or C drive belt with security locked out.

Even if it is sufficient in most cases, if the cord according to the invention consists only of two yarn components that differ in their behavior under load of the spiral twist in such a way that the cord has an eraft-elongation-deformation characteristic which is progressive in terms of load absorption Cordι the particular sur reinforcement over very extensive Laetbereich is determined to be composed of three or more yarn components, their characteristic Elongation behavior under load so closes or overlaps in such a way that the aforementioned progressive force-elongation-deformation characteristic is applied to the cord as a whole results in the load pick-up.

Although as components for the cord according to the invention in general, yarns made from all natural and synthetic fibers come into question and their choices

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and compilation depending on aeia specific use β purpose des Cordes can be taken by a professional have themselves but different combinations are particularly useful emphasized <, So you have made cords for fan belts Polyester fibers with glass fibers or made of polyester fibers with polynosic cellulose fibers (see Eel Hands Textil-. reports vol. 42 »July issue 1961) proved to be good reinforcing layers.

For vehicle tires, spiral cords made of polyester fibers or nylon fibers with poly-cellulose fibers or nylon fibers with Bayon fibers or nylon fibers with glass fibers have proven to be effective as reinforcement inserts.

The invention is in no way intended to be restricted by listing these particular embodiments · Among the numerous fibers which are to be considered as components for the cord according to the invention » only metallic wires and wire strands especially highlighted. In the case of fibers of this type, those associated with the material may, for example, be used electrical or magnetic properties can be used for any additional purposes.

line special "execution form of the invention Cordes consists of «<iai> he from twisting with different Denlers is twisted. The pre-twines can consist of spooled materials. Preferably exist with one however, the pre-yarns of this type are made from the same Material, where the shorter component dta is lower and dl longer excrement panic duck has the higher older

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Bas ratio of the titer of the shorter component sub tit he of the longer component is -νοώ material or τοη the materials of the pre-twined and τοη the particular one Purpose depends on what the cord is used for. Generally this ratio will range from 1: 1.1 or less to Hegen 1: 5 or more. A cord made from synthetic fibers for reinforcement τοη vehicle tires there is, for example, the TLter of the shorter Component to the outer of the longer component such as 1: 2 to 1: 4 ratio.

The cord according to the invention can also be used together with known goal cords or other inserts in tires, which have several layers τοη reinforcement inserts, Find use.

Although the cord according to the invention, as already mentioned goose generally as an insert for elastic fabrics or for Reinforcement τοη objects from el as tie above substances like For example, elastic upholstery straps, tarpaulins, boat skins, stressed on pressure and / or tension Plates, membranes, etc. can serve, it becomes a goal mainly as a reinforcement insert in vehicle tires of various types 8.B. as a belt insert in radial tires Terwendet, but the carcass can also be partially or completely reinforced with the cord according to the invention.

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Tires with reinforcement inserts from the invention Cord are equipped »show a ver« · improved suspension. They mediate when stretching quickly an increase in driving comfort, easier steering of the vehicle and improved lateral guidance and sticking to the ground, covering the bumps of the Roadway swallows elastic. These tires stand out furthermore by a significantly improved wear resistance of the tread and a consequent increased wear resistance s

Lifetime. .

Another preferred application is the reinforcement of drive belts u.zw. both of flat belts and of V-belts as well as conveyor belts that are known in every Way additionally reinforced and can be designed with one or more layers.

In these preferred applications, the ■ continue to have an effect Tortelle of the cord according to the invention described above is particularly strong, so that the so reinforced new vehicle tires and drive belts the well-known Are superior to products of this type.

* In the following the \ 7eeen of the invention is based on » management examples with reference to the drawing explained in more detail «whose Flg. 1-4 Kra.fi; -Dii'rmungs-Diagraajße show »in each of which on the Absßieee the

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in percent and on the ordinate the acting force is plotted in kilopond.

Pig, 5 and 6 schematically illustrate the Formation of the spiral according to the invention twists from pre-twists with the same and different titers.

The force acting on the cord goes - e.g. in the event of a running vehicle tire - back to the tensions, caused by various factors in the reinforcement insert (s). These factors are essentially the axle pressure, which is dependent on the weight of the vehicle, the moment transferred from the axle to the circumference of the tire for the propulsion of the vehicle, the rolling resistance *, the Centrifugal forces of the tire mass, vibrations caused by the running of the engine and strains of the tire caused by its Deformation when rolling on the ground occurs «These numerous force components from which the resulting Compound tensions in the reinforcement insert, Io Cord pulsates in a very intricate way. With reference However, it is not necessary for the invention to determine the type of action of each individual force component alone and in combination with each other existing force component on the Investigate Cord. Rather, it is sufficient to consider the total force present in each case as if it were acting on the cord the reinforcement insert would act under static load.

Flg. 1 shows the force-extension-deformation characteristics

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^R 1O00 ^for · * · ^ηβη V ° ^rzwirn ni * Denier 1000, which consists only of B »yongara» This characteristic has the initial modulus / and is practically unchanged over a temperature range of 20-120 ° C. The further shown £ raft "Dehnung8" Verforniung & charakteri8tlk N ₁₀₀₀ for a Vorrwirn with the same denier 1000 and InItIaI "modul β _t of beoteht only from nylon yarn, however, is highly dependent on temperature · The characteristic shown is based on the behavior of the nylon material in the home driven tires at 100 ° C. This thermoplastic behavior of nylon has the consequence * that the same flows partly irreversibly in the overheated tire and the help grows.

For a twisted gleiohen of rayon fibers and Hylonfasero deniers Cord according to the invention, the structure in Fig. 5 is illustrated achematisch, the Krmft Dehnunge-Verforinungaqharakterietilc-S shown in ₂₀₀₀ for 100 ° C in Fig. 2. This characteristic curve is progressive with regard to the metal absorption, since the cord experiences a greater stretch when the load is low and a relatively smaller stretch when the load is high.

In the illustrated example of the err unconventional cords, it occurs in the area of lower

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stress only to a purely elastic elongation of the cord by about 0.5 percent, because in this area only the nylon component H _1oo0i ^ ee spiral wire, which has a soft Kodul in the vicinity of the Diagretmmur3prunges, which absorbs occurring tensions. _{'' The rayon component H 1000} *, which has a hard module, tightens only when the load is greater or when the tension increases and only now comes into effect by absorbing the load and thereby the further stretching of the cord and thus also the deformation of the tire keeps it small. In the diagram the pig. 2 this is clearly expressed by the fact that the origin of the characteristic curve ^ qAq is offset on the abscissa _{relative to the origin of the characteristic curve H 1000.} The size of the offset depends, among other things, on the twisting of the longer component and can therefore be set in the desired manner during the production of the spiral thread according to the invention.

A boosted with the erfindungege MAESSEN Cord Help approached, he first shows the initially mentioned highly desirable appearance of the ^N heat breathing ⁿ by calibrating all in the same T / else, like a reinforced only with nylon cord helping around 0.5! Percent expands. If the load on the tire when driving due to the centrifugal force and the other force components described above becomes greater and greater, then the rayon component H _1n ^ _{n of} the invention increases to an increasing extent

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Cordes added, whereby a state is soon reached in which this bears the load almost alone, so that the Hylon component N ₁₀₀ Q of the spiral thread is practically completely loosened.

It is possible to choose the twist of the spiral twist, taking into account the properties of the components of the cord according to the invention, so that the one, in the present package the nylon component H- | ₀₀₀ »the forces consistently in their purely elastic range

before it is relieved by the other, in this case the rayon component1; e H ₁₀₀₀ , when the load increases, and finally it is practically completely detached during the Laat intake.

The combination of the two chemically and / or physically different fibers in the twisted twist prevents the nylon component H _{1000 from being} stretched beyond its elastic range when the tire is hot and the helpers show the behavior known as "flatspotting". "Flatspotting" does not occur with the cord according to the invention, because at the point in time at which an impermissible stretching of the Bylon component H ₁₀₀₀ can occur, the thermostable Hayon component H ₁₀₀₀ has long since absorbed all stresses. The Hylon component H ₁₀₀₀ can therefore be used as the temperature rises in the cord according to the invention

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· But it can no longer expand in an irreversible way »because the elongation of the tire can ^{only move} within narrow limits due to the existing eyeon component ü-jqqo.

In Hg. 3 the force-elongation-deformation characteristic of two Torzwirne N ₁₀₀₀ and N * _{ooo is} shown, both of which consist only of nylon yarn, but one of which is 1000 and the other 5000. These characteristic curves apply to nylon at 100 ° C and show similar to the curves of the Pig. 1 by their inclination to the right indicates that these pre-twisted yarns stretch progressively with increasing load, a behavior that leads to "flatspotting".

A cord according to the invention "which is twisted as a spiral thread from nylon pre-threads with denier 1000 and 3000" - cf., the representation of SIg. 5 - the other hand, shows the progressive lifting of the characteristic curve S _{1, 000} according Pig "4 .. For these stress-strain deformation characteristics ^S 400O ⁶ ^ - ¹ ** ^{what was said for the} characteristic curve Sg ₀₀₀ of Pig.2 "namely that the origin of the characteristic curve of that component that is loosely twisted in the spiral thread and thus longer, here ^ qqqj compared to the origin of the other component »which is twisted tightly in the spiral thread and thus shorter, here N ₁₀₀₀ , is offset along the abscissa. Accordingly, the tighter, shorter component initially absorbs the increasing Xsst along the characteristic curve with purely elastic inherent deformation, where si oh. the tire stretches. Before it even becomes even partially

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irreversible deformation of this component comes »involved I have now tightened it through the stretching of the tire longer component, which has a significantly steeper initial module than the aforementioned shorter component the load absorption, which in this way takes place in a purely elastic manner even in high load areas, i.e. the change in shape of the cord that occurs when the load is applied when the load is removed completely eurtiok goes.

The production of the cord according to the invention is best carried out in such a way that IsAlQU & MW & xnin from materials with different initial nodules of the -

Elasticity twisted »and twisted and, if necessary, a follow-up treatment on a spiral * to be united.

With this procedure there is also the possibility of on the quality and in particular on the force-elongation-deformation characteristics of the cord to be manufactured To influence that appropriate yarns are selected. Examples of such a selection both in terms of materials and in terms of the titer of the pre-warming are at one given elsewhere in the description.

The weeping appropriately selected yarns can be attached to calibrated in any way to the finished Spiraloord ▼ be worked out. But it is also possible "with certain yarns due to certain processing methods" another Increase in the favorable properties of the inventive

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Cordes, especially a special soft springy barrel one bit to achieve this cord reinforced tire «

It is known that thermoplastic fibers, especially nylon fibers, are stretched by Kachvers and Tempering in the heat to widen the range of the purely elastic behavior of the same under load considerably. According to one embodiment, the beneficial effects obtained this process for the cord according to the invention toad also achieves an improved filling of the same in that the post-drawing is not in the yarn but is made in the cord, with only that component is changed, which is shorter and taut in the finished spiral cord is twisted, while the second or the further components of the cord according to the invention in this aftertreatment in their kiraf ^ elongation properties according to the Selection of these yarns cannot be changed.

According to a design, one or more pre-twists made of a material with a higher initial modulus, with a lead compared to the remaining pre-twists made of a material with a lower initial modulus exist, are twisted to the spiral thread according to the invention, which can then be stretched and tempered while still hot. Whether a β oil is required before post-treatment depends on the selection of the pre-twists.

Another preferred embodiment of the invention

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according to the method is that one or more Pre-twisted yarns with a higher initial modulus and a hQlie pre-twist, with the remaining pre-twist, which have a lower initial mod ul and a lower, possibly ^ JLe have opposite pre-twist ^ sum according to the invention spiral twine are twisted, - " which can then be stretched and tempered in the heat. ■ ".

For example, a hayon yarn of 1650 denier Ddt is provided with 480 turns / m "pre-twist, which makes it shortened by about -19 5 *. Yfurther will use a nylon thread 1680 denier in the same twist *>: ag · sort V 350 turns / o Twist twisted, shortened to STjS.

The two components are then twisted with one another in the direction of rotation opposite to the pre-twist with 350 turns / m. In doing so, the Xiylon thread loses its entanglement entirely. The nayonfad <= n, on the other hand, retains 130 twists of pre-twist, which corresponds to a single twist shortening of 1 ^ς / ί . The difference in length between the two pre-twists in the cord now results in 10 ^C , 0 less 9 5w, i.e. 9 ^, by which the rayon pre-twine is longer than the nylon pre-twine. So the rayon pre-twine lies around the Uylon pre-twine, which is arranged as a core in the axis of the cord, in spirals. \

This cord is now stretched 9 pounds in the heat. Since the liylon pre-twine was $ 9 shorter than the rayon pre-twine,

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only the nylon pre-twine is affected by the kach reinforcement » At the end of the power restraint, both have components the same length.

During the tempering in the warmth that now follows, only the 3Jylon pre-twine and zn. by about 0 »5 ~ 1 * ρ · The Eay.onvorzwim undergoes no structural change under the tempering conditions and therefore becomes slack when the HyIonvorzwirnes shrinks in the bandage of the cord according to the invention. The force-elongation behavior of this cord according to ^{the invention is, as already mentioned, illustrated by the characteristic curve s} on00 of the "® ^ & * ^" and has been discussed in detail elsewhere in the description.

According to one embodiment, the twisted and Y-arm stretched product can be used as a reinforcing insert in the elastic fabric object, for example the vehicle tire, installed and only then together with the elastic material surrounding the insert in the Vfärme are tempered. This tempering can, for example, be carried out together with a vulcanizing process for the insert surrounding rubber done in one and the same operation. Ee is also used here with the length difference mentioned above between the pre-twists that form the spiral cord and thus a reitefefiij.'Vö K ^ ft-IJehnungs-Verforraungecharakterietik Cordes scored.

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The step of teraperning makes it possible In the case of cord according to the invention, compared with previously known cord a very subtle setting of its loose structure that is due to the aforementioned sagging of the non-shrinking component. In this particular loose Structure is a further essential advantage of the inventive cord compared to previously known cords for its Use as a reinforcement insert because this his Structure creates a particularly solid bond with which to " giving rubber. In addition, the cord according to the invention behaves in the tire because of this loose structure or drive belts in the case of distortions, because they allow a smoother transition of tension from one to the other other material allows.

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Claims (1)

Patent claims: 1. Cord as an insert for items made of elastic Substances, especially made of rubber, which may be made of at least two yarns made from materials mil: different chemical and / or physical properties »characterized in that it is designed as a twisted spiral and has a force-elongation-deformation characteristic that is progressive in terms of load absorption. 2. Cord according to claim 1, characterized in that it has an Eraft ^ Dehnungs ^ Terforimingscharistik, which is purely elastic in small load areas. 3.Cord according to claim 1 or 2, characterized in that that it consists of pre-twists of various deniers. 4. Cord according to claim 1, 2 or 3, characterized in that it consists of pre-twisted yarns of the same material, the shorter component of the spiral twisted yarn having the lower and the longer component having the higher titre and preferably the titre of the shorter Component sum tit er of the longer component pm. Ratio 1j1, 1 bia 1: 5 implores. 5 cord according to claims 1, 2 or 3, characterized in that it consists of polyester fibers and glass fibers, 6, cord according to claim 1, 2 or 3, characterized in that it is functional in that transparent polyester fibers and polyno-fibers Cellulose fiber consists of · ·. j • ■. ■ ■ i -22- ORDINAL INSPECTED 009882 / part ■ i »* '■■:;, L. . -1880228 7. Gord according to claim 1, 2 or 3, characterized in that it consists of 1οlyatiidfasen and polyester fibers or rayon fibers. ö. Cord according to claim 1, 2 or 3, characterized in that that it consists of polyamide fibers and glass fibers. 9. A method for producing a cord according to any one of claims 1 to 6, characterized in that pre-twisted yarns are twisted from Endlcsfaaergarnwa made of materials with different initial moduli of elasticity and combined to form a spiral twisted yarn by twisting and, if necessary, an aftertreatment. 10. The method according to claim 9 »characterized in that the pre-twisted thread or threads made of a material with a The lower Iuodul as the shorter component uriLt the or the remaining pre-twists with a higher modulus as a longer component be twisted into a spiral thread with the lead. 11. The method according to claim 9 or 10, characterized in that that one or more pre-twisted yarns with a higher Liodul, which have a high pre-twist, with the rest Pre-twists that have a lower liodule and a lower, possibly have opposite pre-twist, be twisted into a spiral thread. 12. The method according to ein.der claims 9 or 11, characterized in that the twisted from the pre-twists Iroduct stretched in the Y / arm and then in the warm is tempered, with essentially only the pre-twisted yarns, which form the "shorter component", veratreokt and then will be shrunk slightly. · - 23 0 9 ^ 82/1691 «Üt 13. The method according to claim 12, characterized in that the twisted product is stretched in the veuroe, as Insert built into the item made of elastic fabric and only then susaaoien with the surrounding one elastic fabric is tempered in the showcase. Method according to claim 9, IC or 11, characterized in that the pre-twine (s) made of a material old a lower module hot stretched _v than the shorter coaponent old the remaining pre-twine or the remaining pre-twine old higher fcodul as a longer coaponent sub-finished spiral swim will. $ 1. Use of the cord according to one of the claims 1 to 6, as a reinforcement insert in driving grips, especially as a belt insert in radial tires. 16. Application of the Oordes according to one of the claims 1 to 8 as reinforcement »ei al age for drive belts and conveyor belts. Door the anseid he: Anselderi Dr.ttohn. AIfons Jasicek Vienna IVXII. Bestiengasse ö3 - 24 - 25/4 / 66A 009882/1691 BATH ORIGINAL