DE453255C - Bobbinet chair - Google Patents

Description

Bobbinet chair. The invention relates to bobbinet chairs as well on the fabrics made with the same. Under the bobbinet chairs, lace machines, Curtain chairs, chairs for smooth tulle and all other machines are understood in which the binding threads are soon reversed with the help of bobbins and bobbin carriages, soon to be moved forward through the warp threads.

While previously in the production of double-sided or tubular goods with binding threads (bobbin threads) entered in both surfaces of the goods, one of which Part. woven into one surface of the goods and the remaining binding threads into the other surface the tension of the binding threads in the one fabric has difficulty with the tension the binding threads in the other fabric could be kept the same, so that the two Fabrics very often showed very different appearance, are said to be due to the invention these difficulties are eliminated, so that several coincident Fabrics or rounded goods with matching surfaces are easily produced can be. It is known that even relatively small changes in the tension of the threads, in particular changes in the tension of the binding threads and Warp threads, quite a big influence on the type, size and / or type of fabric exercise. It is also known to have a great impact on tissue when the point in time at which the threads are tensioned within the movement processes is changed. .

The machines now in use are used to change the voltage of the threads various, well-known devices have already been used. however, the change in the tension of the binding threads (bobbin threads) is limited. Also, tension can only occur at certain times within the movement process going on.

The main purpose of the invention is to eliminate these drawbacks and changing the tension of the threads, especially the binding threads (bobbin threads), is easier than before and without being bound to specific times.

Another purpose of the invention is to machinery dex type specified above to produce fabric, the meshes of which are partly the meshes knitted goods are similar, so that the fabric resembles knitted goods and the like Has properties like knitted rarities. These tissues can now be used for production of clothing are used in contrast to those on the Bohbinetstühlen Manufactured lace, grommets and other fabrics used only as trimmings for garments be used.

The main feature of the invention consists in a device for Distract your binding threads from their normal path to the fabric support bar. L: m this to achieve are, according to the invention, on the needle bars of the machine a or several adjustable parts provided.

Next to these, sitting on the needle bars, to deflect the threads Serving parts is the thread guide eye in the bobbin carriage in a special way arranged. This eye, which so far has been exactly on the slide's symmetry line has now been shifted somewhat from this.

On -machines with the aforementioned ab-. Changes can now be made according to the invention Fabrics are produced in which individual binding threads in two consecutive Work movements of the machine on one and the same side of the same warp thread remain and at the same time cross adjacent warp threads. Also can tissue are produced, in which individual binding threads in two successive Movements or crossings of two adjacent warp threads on one and the same Side, d. H. under or over individual warp threads, remain or cross each other.

Under the expression "adjacent warp threads" and "adjacent binding threads" are those warp threads or those binding threads to be understood, which, if two fabrics are produced at the same time, lie next to each other in the front tissue, and such Threads that lie next to each other in the back fabric.

The invention has nothing to do with the manufacture of such goods, in which the binding threads with every movement (shifting of the comb e.g. by one Pitch) are looped around the relevant warp threads.

The fact that the warp threads in two successive work movements are crossed by the binding threads on the same side, the binding threads let stitches arise at the relevant points, which knitted the knitting stitches Goods appear quite similar.

The drawings serve for a better understanding of the invention. Fig. i represents a bobbinet chair with the device for deflecting the binding threads, # emiiß Invention.

Fig. 2 shows a diagrammatic representation of a needle bar the attached device for deflecting the binding threads.

Fig. 3 to 8 show different weave patterns.

It is well known that the thread entanglements in bobbinet chairs by the needles sitting on a so-called needle bar 3: 2 against a fabric support strip i are pushed and that one needle bar each on the front and back of the Machine is arranged. The needle bars 3 are moved so that .sich their needles between the chain and push it up against the fabric support strip i as soon as the spool carriages .l located on the same side swing outwards.

Used to divert the bobbin threads from their usual straight line The thread run from the fabric support strip to the thread eye of the shuttle is on each one Needle bar 3 directly on or under the needle bar parallel to the needle tips lying special thread guide rails in the form of rectangular metal strips or rails 5 attached. The brackets 6 are used to attach the rails 5 to the needle bars 3. The rails 5 themselves are attached to the brackets with screws 7 or the like, namely, these screws are worked into the rails 5 or 6 in the angle Slits 8 drawn so that the rails can be adjusted if necessary. the The number of angles 6 can be arbitrary; the length of the rails 5 can also be a be arbitrary. The '_ @ adeln 2 protrude beyond the rails 5 so that their tips push yourself between the threads 9 before the latter comes into contact with the rails 5 come. As soon as the needles are pushed inwards and upwards at the same time in the usual way the rails 5 come into contact with the threads 9 and displace them from their normal position, indicated in Fig. * i with the dotted line 9a, whereby whose voltage undergoes a corresponding change.

If the rails 5 are adjusted relative to the: censures 2, this has As a result, the threads are also deflected from their normal path or position in a different way is changed and also the time of the distraction within the movement process will.

Since the rail only has the binding threads 9, but not the warp threads io to deflect, the arrangement is made so that the rail against the Chain-directed movement with the binding threads going straight outwards, d. H. away from the chain, moved ”-earth, not until it comes into contact have passed those warp threads io that are in the direction of movement of the Binding threads 9 are on the side facing outwards.

Instead of the adjustable rails 5 could possibly also fixed, d. H. Not adjustable on the needle bars or with the rebuke bars 3 one-piece rails can be used.

About the tension created when the thread is withdrawn from the bobbin 12 to reduce and thus to make the withdrawal of the thread easier, is the thread guide eye i i on the side of the bobbin carriage d. provided and not, as usual, on the arranged vertical center line of the bobbin carriage.

The position of the eye can be changed, which means then the generated thread tension is also changed.

If the thread guide eye in a generally customary manner, i. H. in the In the middle at iia (Fig. I), the binding threads 9 would go from the to working needle bars on both sides of the machine. However, when the eye as explained above, moved out of the middle and z. B. is provided for i i, only that needle bar can act on the threads, which is on the side of the Warp threads after which the thread eye is shifted.

In Figures 3 to 8, the weave patterns of various items of goods manufactured according to the invention are shown. The binding threads are with b, b1, b =, b3, etc., the intertwined with the binding yarns on the front of warp threads with fw, f, ell, fw2, ETC. and the warp threads intertwined with the binding threads on the reverse side are labeled b7 £ "bwl, bze12, etc. From Fig. 3, .., 5 and 8 it follows that there is one binding thread for every two warp threads For the sake of simplicity, the warp threads lw, f tvl and f w2, f w3 should be referred to as chain thread pairs according to Fig. 3. The goods are manufactured in such a way that every second chain thread pair is intertwined with the binding threads on the front of the machine, while the pairs in between of the adjacent warp threads are intertwined with the binding threads on the back of the machine.

The binding thread 1l should be considered. It runs first under bu, and bwl, then over btc, l. then under f -w, over fw and at the same time over fu, l and further under case over bwl, under bw and bwl, over bw, under fwl, over fw and fze, l, under fw and finally over bw, which is a Motion would be ended. The movements of all other binding threads are the same and repeat themselves in the same way during the manufacture of the goods.

As can be seen from Fig. 3, the Bindefi'ulen, z. B. b ', first at a with two adjacent front warp threads f «=. f «@" and then at a1 with two rear warp threads lying next to one another bzu =, bcc5 intertwined, etc., ie each Dinde thread, e.g. bl, runs under or over the intersection of the threads of one pair of warp threads, e.g. bw bzt, l. and then above or below the point of intersection of the adjacent pair of chain threads, e.g. fw, f -, u1 via a chain thread of the second chain thread pair.

Fig. 4 shows a product in which three pairs of chain threads lying next to one another are intertwined with the binding threads on the front, while the next two pairs of chain threads are intertwined with the binding thread on the back. the The movement of the threads is the same as described in Figure 3, with the exception that those binding threads, which either only on the front or only on the back are intertwined with the pairs of chain threads, at their points of intersection with the Chain thread pairs always run on the same side of these intersections. so both times above or 1, -idernally below the intersection, while between these intersection points the threads of the adjacent pairs of threads both cross on the opposite side, d. H. either run under both threads or over both threads.

According to Fig. 5, all the warp threads are only on the front intertwined with the binding threads. In this case the movement of the threads is the same again, as described under Fig.3, but with the exception that the binding threads are always in the same direction, d. H. either always below or always above the crossing point of the pairs of threads, while the binding thread runs between the crossing points always comes to lie above or always below the individual threads of the thread pairs.

With reference to Figs. 3, 4 and 5 it should be noted that the binding threads, when they are intertwined with two front and rear warp threads, at the transition from the back warp threads to the front warp threads over the first and under the latter run and those passing from the front to the rear warp threads Tying threads run under the former and over the latter. When the twine but only with the front ones or only with the rear warp threads are entangled, they run at the transition between adjacent pairs of warp threads always in the same direction, d. H. above or below those warp threads.

In Fig.6, each chain thread group is made up of three chain threads bw, bar ', bw2 and f?: U, f @ t @ l, ftc2 and is provided for one binding thread b for each group. The thread groups are crossed by the binding threads alternately on the front and on the back. The binding thread b runs z. B. first 'under the rear warp threads bwl, bw the thread group bw, bzul, 1) w2, then over the warp thread bzel, then. he goes to the front chain thread group f tv, fwl, for = and runs under flu, further over f ü, 1 and f -w, then again under f w1 to go to the rear group, over bwl, then simultaneously under bwl and bw2, now again via bu, 2 to the front group. It now continues under f w1, simultaneously over fw2 and fwl, under fw2, over bzt, 2, under bw and bürg, over bw, under fw2, over fiU2 uncT fzu, under for and finally over bw back to the starting position. A movement process would then be completed. It can be seen from this that each binding thread is entangled one after the other with the first and second warp threads of one group, then with the second and third threads of the neighboring group, and finally with the third and first threads of the first group, in the course of the steps from one chain thread group to the adjacent thread group .

In Fig.; only one chain thread is provided for each binding thread b. The binding thread h runs over chain thread 1 over to w1, first passes over, then under the same away and back over to Ztl, where it runs over, then under w and then again under and over w1. The binding thread b now waits until the next adjacent binding threads b2, b1 on both sides with w. Zc, 2 and with w ' and the next chain thread (not shown here) to 'entwined are. - In other words, the binding threads are made with two adjacent ones The warp threads are twisted twice and then rest for that long. to the neighboring Tying threads are also twisted twice with two chain threads each.

A rich pattern effect is possible due to the various binding options. An example is given in Fig. I #. This figure corresponds to Figure 3, with the only difference that here the binding threads are kept away from the binding with the warp threads at certain intervals. The binding thread b, after it is passed under the intersection of bw and bwl and over b <ul, is not entwined with fwl, but held back for the time being and then entwined with fw. In this way, openings will be created in the goods at h.

All the goods described above can be used with a similar effect as produce the catch goods or edge goods of the knitting. To what extent the meshes emerge depends largely on the tension imparted to the warp threads away. In addition, one or more warp threads can be provided for each binding thread will. Incidentally, the goods manufactured according to the invention can also be used as round closed goods are produced; can also have several similar goods be made at the same time.

When making the goods, make sure that the binding threads (bobbin threads) are drawn off in a relatively large length for the purpose of stitch formation and the bobbins be held relatively loosely. For this purpose, those already described are used and means shown in Figs. i and 2; -They pull the binding threads from the bobbins in the desired length and allow any required change in the tension of the binding threads.

By bringing the binding threads to form a loop, as z. B. indicated at a and a1 and described above, the goods get in the direction of a certain elasticity at right angles to the warp threads; she will in appearance both and rather similar to knitted goods in terms of their elasticity. .

To reduce the possibility of the mesh falling, you can, if necessary further chain threads are drawn in between the individual chain thread groups.

Claims (1)

PAT1: N'rANsi'RÜcHr: i. Bobbinet chair, characterized by thread displacer, which the dinde threads after passing through the warp threads from their normal Deflect the barrel to the fabric support bar. z. Bobbinet chair according to claim r, characterized in that that for deflecting the binding threads adjustable rails with the 1 noble rod carriers (3), are connected. 3. Bobbinet chair according to claim r and 2, characterized in: that (read the thread guide eye located in the bobbin carriage on the side of the carriage is arranged. d .. Bobbinet fabric produced on the basis of claims i to 3 marked bobbinet chair, characterized in that that at Union of the warp threads into groups of one, two, three or more threads each Tying thread intertwined with each chain thread of the adjacent chain thread group will. 5. Bobbinet fabric, produced on the marked by claims i to 3 »eten Bobbinet chair, characterized in that the warp threads from the binding threads twice be crossed on the same side, d. H. that the binding threads twice either under or over the warp threads «-earth, whereby the binding threads mesh form.