DE576693C - Process for making rod warp pile fabrics - Google Patents

Description

GERMAN EMPIRE

ISSUED AH May 18, 1933

REICH PATENT OFFICE

PATENT DOCUMENT

KLASSF 86 d GROUP

is used.

The invention relates to the production of rod warp pile fabrics, in which each non-patterning pile warp threads removed from the fabric after weaving will. In the production of such fabrics are in the fabric in most Cases not all pile threads are used for the formation of the pattern in one point under consideration. The appearance of fabrics of this type, especially carpets, is in contrast to hand-woven carpets in which only the threads forming the pattern make the carpet. The cleanliness of the back of non-hand-woven carpets is often caused by the presence of this excess, visible threads on the back are blemished, and you can also recognize them immediately the mechanical production of the so-called oriental carpets. One has already got rid of these non-patterning ones Pile warp thread parts proposed as soon as their presence in a particular Points of the carpet in the formation of the pattern is superfluous.

Processes for the production of warp pile fabrics with between the tails and the upper wefts of the base fabric, which do not form a pattern Pile warp threads are the subject of patent 548 575. During manufacture however, very close-shot carpets of this patent can have difficulties arise in that the non-pattern-forming pile warp thread parts do not fall out of their own accord, in that some interweave are clamped tightly to the knobs lying close to one another. The removal of these threads was relatively easy at the manufacture of a fabric with thick points of wool; but it became difficult in making fine dense points. In case seeking out these ineffective Threads was not carried out with the desired care on the part of the worker the danger that this part of the carpet will be spoiled or disheveled.

The difficulties mentioned are eliminated according to the invention in that the each pattern-forming pile warp threads of the ones running below the base fabric Pile chain according to that. Pattern to be woven after entering a lower basic weft one or more times in succession over the rod and down around the lower base section around 55 ■ finally from the upper compartment back into hers

To return to the starting position below the base fabric.

The method according to the invention brings a number of advantages: The Carpet remains completely untouched; instead of looking for the threads to be removed a mechanical work one; the loom is greatly relieved and enables one Increase in production, since he is not at ίο every between two consecutive Rods lying work cycle the large mass of non-pattern-forming threads in motion needs to put.

The method according to the invention can also be carried out in such a way that the respective pattern-forming pile warp threads of the ones running below the base fabric Pile warp according to the pattern to be woven after shooting in a number, for example, three, base shots (shortfall, overshot, shortfall) on theirs Rest position below the base fabric upwards over the tail, then downwards the first lower base shot around, over the second upper base shot and again down around the third lower base section finally from the rod compartment back to its original position below the base fabric to return.

There are also difficulties in eliminating the non-patterning portions of the pile threads in some cases because of the crossings of the same which may occur on the back side. Furthermore, enters thereby \ ^r eranlaßt, a so-called swelling that affects the appearance of the carpet.

In order to avoid these difficulties as well, the procedure can be modified in this way that the respective pattern-forming pile warp threads correspond to the pile warp running below the base fabric the pattern to be woven after entering a lower basic weft one or more times in succession over the rod and be guided down around the lower base section, and finally out of the upper compartment to return over the lower base weft to its starting position below the base fabric.

Some exemplary embodiments of the methods according to the invention are shown schematically in the drawings, namely shows Fig. Ι the proposed thread guide for the pile warp threads when weaving a Carpets with five choirs and a lower base weft between the rods, FIG. 2 shows the corresponding binding cartridge, FIG. 3 shows a similar longitudinal section through the finished carpet woven according to FIGS. 1 and 2 after removing the non-patterning ones Pile warp thread parts,

Fig. 4 shows a similar binding as Fig. 1, namely the proposed guide for the Pile warp threads when weaving a carpet with four chores and two between the rods lying lower ground shots,

Fig. 5 shows a similar binding as Fig. 4, but without weft thread when inserting the Rods,

6 shows the binding cartridge for the binding according to FIG. 5,

7 shows an improved guidance of the pile warp threads during the production of a carpet with four chores and a lower base weft lying between the rods, FIG. 8 shows the corresponding binding cartridge. In the drawing, L ₁ and L ₂ are the basic warp threads, R the or filler warp threads, d the weft threads, ν the rods, g the pile • warp threads and G the tufts.

It is now the production of carpets with single weft thread, i. H. with a lower base section between the rods and with five choirs (Fig. 1, 2 and 3) described in detail, with the other depicted bonds differing then surrender by themselves.

The pile warp threads of the choir g _t selected by the pattern card for forming the pattern are used over the rod V ₁ as well as the weft thread CU ₁ inserted together with this, then for forming the corresponding pattern points on the back around the weft thread d ₂ and then for forming the pattern pile area on the front over the rod V ₂ and the weft thread d _s entered together with this. Thereafter, the threads of this choir, since they are no longer needed to form the pattern, fall under the weft thread d ₄ and remain completely outside the carpet on its rear side until they are reinserted into the fabric. This happens after the weft thread d ₂₀ .

The threads of the choir g ₂ , which are supposed to take the place of the choir g _{t in} accordance with the pattern in order to participate in the pattern formation further, were taken out of the fabric through a suitable perforation of the sample card at exactly the moment where the threads of the choir g _x their finished the last pattern point, and they are guided at the same time as the pile warp threads of the choir ^ ₁ over the rod v ₂ and the associated weft thread d _s .

The threads of the choir g ₂ then alternately form their pattern points on the front and on the back by being _{guided over the rods W 3} and V ₄ as well as under the lower base weft threads d _t and rf.

As soon as they have completed their pattern dots, they are passed under the lower base weft thread d ₈ to the back of the fabric and float outside the carpet under the base fabric.

The threads of the choir g _a , which are now supposed to take the place of the pile warp threads g ₂ ", take part in the formation of the carpet by simultaneously following the pattern card

ίο are passed with the pile warp threads of the choir g ₂ over the rod V ₁ , forming the pattern up to point C.

At this point they are replaced by the threads of the choir g ₄ , which are passed over the rod V ₅ at the same time as the pile warp threads g ₃ and from this moment on form the pattern on the front and on the back up to point D , where the pile warp threads g ₅ jump in and so on.

It is apparent that the Florkettenfäden the choir _lt g the finish their work at A and pick them up again until E after they have been hovering below the base fabric, eliminated between A and B. They leave the pattern again at F , where they disappear again from the carpet to float under the base fabric.

The pile warp threads g ₂ , which replace the pile warp threads ^ ₁ , are removed before A and woven in between A and B in order to disappear between B and H from the fabric to the back of the carpet, whereupon they are woven in again at H to create the pattern up to / to form, where they then disappear again.

The _{pile warp threads §- 3} that do not form a pattern before B are tied in from B to C and then disappear to K ₁ where they take over the pattern formation again.

The pile warp threads g " ₄ removed from the carpet before C form the pattern between C and D ₁ disappear between D and F, sx work from. F to H and leave the carpet after H again.

Finally the Florkettenfäden § · ₅ then work occur in / for the pattern formation between D and E and between / and K ₁ being g in place of the Florkettenfäden ₄ g at D and the place of Florketteiifäden ₂ and above D ₁ between E and / and finally to be eliminated after K.

All non-pattern-forming pile warp thread parts are removed after weaving by simply brushing the carpet on the back, eliminating any damage and any ruffling of the front is avoided. A carpet finished in this way Figure 3 shows.

The threads of the choir Jf _{1 complete} their pattern with the right part of the pile nub G ₁ after forming their pattern point on the back under the lower base weft thread dg. By pulling in the rod V ₂ , the pile warp thread of this choir was cut open at A, thus forming half the pile tuft. At the same time, the threads of this choir, which no longer form a pattern from point A, were released.

Simultaneously with the pile warp threads of the choir Jf ₁ after the passage of the weft thread d ₂ , the sample card caused the lifting of the threads of the choir g ₂ , which were released after the entry of the rod V ₂ in the part of the fabric in front of A and the left part of the pile nubs G _{2 have} formed. Your work continues; they form half the right tuft of G ₂ as well as the left of G ₂ after the passage of the rod V ₃ and leave the carpet again after they have formed the half of the right tuft of G ₂ after the passage of the rod v ± at point B. In the parts B to H they are then eliminated.

The pile warp threads of the choir g _s then follow them from the weft thread d _e ; When the rod v _t is drawn in, the entire part of it that is in front of B is released and forms the left tuft of G ₃ ; after the passage of rod V ₅ at C they form the right part of G ₃ . They are answered from C to K.

The threads of the choir g _t form the half and whole tufts from G ₄ , G ₄ 'and G ₄ ". They are eliminated from the formation of the half right tuft from G ₄ " on between D and F.

The threads of the choir g _s form the half and whole tufts G ₅ , G ₅ 'and G ₅ ". They are removed from point E to point /.

The threads of the choir ^ ₁ follow them from E to F in the same way, whereupon the threads from g ₄ come to the fore again between F and H , and then through the threads from g ₂ between H and / and then to K through the Threads of g ₃ to be replaced, etc.

It goes without saying that such a mode of operation. That for the more general case an arrangement with five choirs was described in the same way for Arrangements with two, three or four choirs are suitable, both for working with ■ a single weft thread as well as for working with a double weft thread U5 as well as with several weft threads. This is shown in FIGS. 4, 5 and 6.

Practice has shown that in certain embodiments of the method, the elimination of the non-patterning parts of the Pile warp threads are made difficult in some cases because of the crossings that occur at certain

Place on the back between the pile warp thread parts to be removed and the im Remaining pile warp thread parts appear on the carpet. Also, the back receives this gives an uneven appearance because of the difference in the meaning of the Loops on the back as the loops, under which no pile thread by crossing clamped, are necessarily smaller than the loops that are underneath have formed a pile warp thread part to be removed. Through this peculiarity which is referred to as swelling, the carpet takes on an appearance that in itself is not disadvantageous and is even sought after for certain so-called primitive oriental carpets but should be avoided for other types of oriental carpets.

The above statements can be better understood with reference to FIG. 1. From this figure it is easy to see that the elimination of the lying between the rods V ₂ and W ₁₁ part of the pile warp thread ^ ₁ certain difficulties z. B. can be countered by the fact that the thread g _v, which has decided on the pattern, is guided under the weft thread d ₄ at the same time as the thread g ₂ , which has started the same, and that as a result these threads necessarily cross. From this it also follows that under the weft thread d _it follows the pull-in of the rod> ₂ and around which the two pile warp threads ^ ₁ and g _{2 are} lifted at the same time, after the removal of the one between the rods v _& and W ₁₁ , not pattern-forming part of the thread ^ ₁ a swelling of the loop of the thread g ₂ can arise. The same disadvantages can occur with the weft threads d $, cf ₁₀ , ^ ₁ G etc., which follow the drawing in of the rods v _it v _s , v _s etc. and around which two pile warp threads are lifted at the same time. On the other hand, the difficulty in eliminating the non-pattern-forming pile thread and the swelling under the weft threads d ₂ , d _ß , d _u , d ₂₀ , etc. cannot occur.

The purpose of the binding ″ shown in FIGS. 7 and 8 is to avoid these disadvantages, and For this purpose it is characterized in that the pile warp threads are used for pattern formation are no longer required after the individual rods have been drawn in, over which two pile warp threads are passed at the same time are separated from the pile warp threads now used for pattern formation.

From Fig. 7 and 8 it can be seen that one

according to this method of operation after the rods V ₂ , v _t , V ₇ etc. are drawn in, over which two pile warp threads ^ ₁ and g ₂ , g ₂ and g $, g ₃ and g ₄ 'are passed at the same time, the pile warp threads, which have chosen their pattern to separate from the pile warp threads that have just started it; this separation takes place after the rod V _{2 has been drawn in,} for example by leading the threads ₁ over the weft thread and the threads under them. In this way, among the weft threads d _it d ₈ , d _u , etc., any crossing between two types of pile warp thread, namely the threads that have decided on their pattern on the one hand and the threads that have just begun on the other, is avoided It follows that any difficulty in eliminating the non-patterning pile warp thread parts as well as any swelling of the pile warp thread loops on the back is avoided by the fact that the pattern points on the back are always formed by a single pile warp thread.

It is also clear that the pile warp threads which are to begin their pattern can be guided below the weft threads d ₂ , d ₆ , d ₁₂ , etc., together with the pile warp threads which are about to resolve it, without disadvantageous consequences.

This new way of working makes it possible to omit the neck or lace board, but requires the presence of a sample card on the reverse side to allow the threads, which have decided on their [pattern, after the rods V ₂ , V _it V ₇ etc. have been drawn in over the weft threads d ₄ , ά _Ά , d _u usAv. to lift.

Claims (3)

Patent claims: i. A method of making a rod warp pile fabric in which each Non-pattern-forming pile warp thread parts are removed from the fabric after weaving, characterized in that that the respective pattern-forming pile warp threads correspond to the pile warp running below the base fabric the pattern to be woven after entering a lower basic weft or several times in succession over the rod and down around the lower base section to finally return from the upper compartment to its original position below the base fabric. 2. ■ A method for producing a rod warp pile fabric, in which each non-pattern-forming pile warp thread parts are removed from the fabric after weaving, characterized by, that the respective pattern-forming pile warp threads correspond to the pile warp running below the base fabric according to the pattern to be woven shoot several base shots (undershot, overshot, undershot) from their Rest position below the base fabric up over the tail, then down around the first lower base weft around, over the second upper base section and down again around the Third lower base shot around to finally get out of the rod compartment return to their original position below the base fabric. 3. Method of making a Rod warp pile fabric, in which the pile warp thread parts that do not form a pattern removed from the fabric after weaving, characterized in that that the respective pattern-forming pile warp threads correspond to the pile warp running below the base fabric the pattern to be woven after entering a lower basic weft one or more times in succession over the Tail and be guided down around the lower base section to finally from the upper compartment over the lower base weft back to its starting position below the base fabric to return. 1 sheet of drawings