DE1535562C - Method for passing on a piece of fabric being produced on a wave weaving machine after a work interruption and device for carrying out the method - Google Patents

Description

i 535

The invention relates to a method for further weaving an on a wave loom in production grasped piece of tissue, in which the attack front and the weft thread direction one Include a small angle with each other after a work interruption where already entered weft threads have been removed from the fabric.

Wave looms are known (German Auslegeschrift 1072 569, Belgian patents 635 288 and 635 289). In these wave weaving machines, several web supports each carry one behind the other a shed wandering across the width of the weave, only part of it through the warp threads the weaving width is formed, one weft thread between the warp threads. This weft will continuously struck by stop members on the fabric that has already been produced before the warp threads at the relevant point of the weaving width in the position for taking up the next weft thread ao to be brought.

When a weft thread is inserted in its entire length, it is already on a large one Part of its length is struck on the fabric, and there are already more weft threads through the Subsequent shooters were inserted and posted over part of their length. The geometric one Location of the attachment points of the last inserted weft threads, hereinafter referred to as the attachment front therefore forms an angle, albeit a small one, with the weft direction. When the weft threads as with the fabrics produced on conventional looms, at right angles to the warp threads should run, the front stop must form an angle slightly different from 90 ° with the direction of the chain. This angle depends on the weft thread density, the weaving width and the number of people working at the same time Protect different. If, on the other hand, the front stop should always be at right angles to the direction of the warp form, the weft threads are at an angle different from 90 ° to the warp threads struck, and the fabric must then be twisted a little so that the angle between Weft and warp threads become 90 °.

It has now been recognized that in both cases there is the disadvantage that it is not easily possible is to simply continue to weave, for example when the loom has been switched off to correct a weaving defect and the weft threads that were last inserted in whole or in part have been removed from the fabric are. Such an interruption of work may be necessary if, for. B. broken a weft thread or a defective weft thread was inserted. If one after removing the last entered If the weft threads just wanted to continue to weave, no new threads would be inserted in place of the threads that were removed and chipped. An alleyway running in the weft direction would remain in the fabric, which would render the fabric unusable would do. If, on the other hand, the chain were to be pulled back so far that the first newly inserted weft thread at the shooter entry end at the point of the last weft thread removed would be struck, the stop organs would be the last not removed weft threads move forward to an increasing extent towards the exit side of the shooter and huddle together while the newly inserted weft threads from this stop front diagonally run back and also leave an alley free.

The invention is therefore based on the object of avoiding these disadvantages. .

This is achieved according to the invention in that the one lying between the last one in the tissue The small angles located on the foot thread and the tack front are eliminated, so that the tack front and Weft threads are parallel to each other, that then new weft threads are inserted and that during of the complete insertion of the first new weft thread the angle between the stop front and The weft thread direction is brought back to the previously maintained value.

There are various options for eliminating the angle mentioned and restoring the angle previously maintained. So can one can adjust the angle between the tack front and the weft thread direction by warping the fabric or Eliminate by swiveling the stop front and bring it back to the value previously observed.

In the first case, the warp threads can vary in length in the area of the stop front moved back and forth. This measure is useful when the stop front and the shooting direction are at right angles to the warp direction and the weft threads after Before hitting, form an angle different from 90 ° with the direction of the chain and between the front of the hitch and goods tree a mutual displacement of the warp threads should take place anyway, so that the weft threads as the fabric runs onto the tree at right angles to the weft direction come to rest.

The second measure, the adjustment or pivoting of the stop front, that is, the front reversal points of movement the to-and-fro stop members come into consideration in particular when the weft threads are struck in this way should that they run directly at right angles to the warp threads. Then he has to Angle between warp threads and tack front according to the weft density and the shuttle distance be changeable.

The invention also includes devices. Wave looms for carrying out the invention Procedure.

Such a device in which the tissue is warped in order to change the specified angle, is characterized in that between the warp beam and Änschlagfront and between the stop front and fabric tree each have a deflecting roller for the warp cord that extends across the weaving field or for the fabric, which roller is pivotably mounted at one end and at the opposite end The end is guided displaceably transversely to the longitudinal axis.

Another device in which the said angle is changed by pivoting the stop front is characterized in that the weft thread beating device of the loom is pivotable about an axis which is essentially perpendicular to the plane of the tissue.

In another device with a weft stopper with a multitude of stop lamellae, which run lengthways to each other and to the planes in which the individual warp threads run, parallel tracks are reciprocable and

^: ■ .. · ■■ ■■ ■ 3 ■ '■' · 4 ■■ ... '■

the front movement reversal points of which the ends of the warp thread 11 wandering over the weaving width Forming impact fronts can lead to the change of the wave antinodes of the same, the. Form of Sagittarius called angle or for pivoting the shape adapted to form 21 in which these shooters stroke front, the stroke ranges of the individual stops are held and taken along. In the area Slats are displaced in relation to one another along their paths - each passing shooter 21 thus acts be bear. of the organs 22 temporarily as shooters 22 a.

In the drawing, the subject matter of the invention is shown between these areas the same organs act on the basis of exemplary embodiments. as a stopper 22 b by making a weft thread 24, it shows. that of the last to the entering organ 22-

F i g. 1, a shooter 21, which was run with a first embodiment of FIG. 10, is inserted into its shed 19 called facility equipped Wellenweb- has, up to the designated as stop front, parmaschine in a perspective view from the left allele to the axes of the warp beam 10 and des Side, goods tree 12 running straight lines 18 to the loading

FIG. 2 shows the state of fabric 13 that has already been produced in a schematic top view. Every shot the The warp and the fabric on a wave weaving thread is then finally "- depending on the weaving machine according to Fig. 1 after your tearing of a pattern - by crossing the warp threads LIa and lift Weft thread and parking the machine, at the relevant point by means of the appropriate

FIG. 3 shows the shafts of the shaft group 17 in a representation analogous to FIG.
Adjustment immediately before further weaving, 20 The fabric 13 runs from the stop front 18

F i g. 4 and 5 in an analogous representation the same over a second guide roller 25, a second AusElemente in two different stages after the start of the steering roller 26 and between a switching and a breast des Further weaving, tree 27, which is turned with a handwheel 48

F i g. 6 an angular velocity which can be adjusted with another embodiment is driven the said device equipped Wellenweb- 25 and the uniform advance of the fabric machine in a perspective view from the right causes its entire width, and a pressure roller Page, 28 through to the tree 12, on which it

Fig. 7 a wave loom is wound with a third. Be in operation of the machine Embodiment of the device in a schematic of the warp threads continuously from the warp beam 10 to Side view, 30 of the stop front 18 and from there as components

F i g. 8 elements of the shooter drive and attachment of the fabric 13 moved on the tree 12, beating device of a wave weaving machine with the backing beam 14, the two guide rollers 16 fourth embodiment of the device, in side and 25 and the chest tree 27 are with each other view, and to the axes of the warp beam 10 and the

F i g. 9 a part of the in F i g. 8 illustrated 35 goods tree 12 parallel, immovable axes Elements, seen from below, in the two side walls 29 and 30 of the web

F i g. 10 a section along the line X-X of the machine frame mounted; from the (from goods-F i g. 9 and tree 12 seen) right wall 29 are only

Fig. 11 shows a diagram of the operation of the shaft two bearing projections 29a and 29 ft, and loom with the device according to FIG. 8 40 parts of the left wall 30 have broken off, to 10, according to the line XI-XI of FIG. 8 from above around elements located behind these parts seen. show.

In Fig. 1 denotes 10 the warp beam of the shafts. The two deflecting rollers 15 and 26, however

loom, 11 those running down from the warp beam are with their right ends in the bearing protrusion chain and 12 the goods tree on which the with 45 gene 29 a or 29 ft of the right side wall 29 Using the chain 11, fabric 13 is wound and pivotably mounted, while its left ends are in will. The chain 11 runs from the warp beam 10 over an arcuate slot 31 or 32 on the left Backrest 14, a first deflecting roller 15 and a side wall 30 are held displaceably. The Guide roller 16 after a shaft group 17 and the longitudinal profile of the slots 31 and 32 is selected so that from there to the stop front 18. 50 that the left ends of the deflecting rollers 15 and 26, respectively

The shafts of the shaft group 17 are not shown in the drawing not only upwards and downwards, but also not according to the voltage. They form the chain 11, front and rear, in such a way that their threads alternately upwards and that the tension of the warp threads 11 and below ausleriken each other in a wave-like manner over the weaving width caused by the fabric 13 on these rollers following wandering sheds 19 between 55 forces have the lowest possible components parallel to the see the upwardly deflected warp thread 11a axis of the relevant roller; thereby and the downwardly deflected warp thread 11 b. a lateral migration of the warp thread in each such wandering shed, one of which or the fabric is counteracted,
at the front edge of the chain in the drawing. The deflecting roller 26 is in the projection 29 ft in

is shown schematically in longitudinal section, runs a 60 mounted such a height that it, if its axis Protect 21 with. parallel to those of the guide roller 25 and

The shooters 21 are supported by organs 22 of the chest tree 27, which is located by this tree, those in the longitudinal direction of the machine, d. H. Rolling tissue following the breast tree lengthways one each perpendicular to the axes of the warp straight touches. That is the case when the deflection boom 10 and the tree of goods 12 running 65 roller 26 at the upper end of the slot 32 is pending. Level, individually in equal cycles with one such when the left end of the roller 26 down mutual phase shift is moved back and forth, the path of the warp is lengthened, that they cross in the direction of arrow 23 to threads 11 from the frit 18 to the breast

tree 27 and the fabric tree 12, i.e., the individual warp threads 11 become when the Deflection roller 26 in the area of the stop front 18 by different, increasing from right to left Amounts moved forward. When the weft threads 24 of those parts of the fabric that lie on the breast beam 27 or are wound up on the goods tree 12, parallel to the axes these trees run and are at right angles to the warp thread 11, so then form in the area of Stop front 18 the last weft threads 24 inserted into the fabric 13 with the stop front a small angle, which is larger, the further down the slot 32 the left end of the deflecting roller 26 stands.

To this different displacement of the warp thread 11 in the area of the stop front 18 without Change in the mutual position of the warp beam 10 and fabric beam 12 without changing the warp thread length to compensate between the two and without changing the warp thread tension, the Deflection roller 15 during downward pivoting of the deflection roller 26 around its bearing point in the projection 29 a pivoted upward that the path of each warp thread 11 from the spanning tree 14 after Guide roller 15 is shortened by exactly as much as that of the same warp thread 11 from the guide roller 25 is extended after the breast tree 27. Do this using the left end of the rear Deflection roller 15 in the slot 31 and the left end of the front deflection roller 26 in the slot 32 by means a common lever 38 mounted on a pin 37 via a respective link 33 or 34, the is hinged to this lever by means of a pin 35 or 36, shifted in opposite directions. At the front The end of the lever 38 also engages a tension spring 39, the opposite end of which is at one in the Wall 30 seated bolt 40 is hooked, and the lever 38 to pivot counterclockwise, To lower the left end of the deflecting roller 15 that the deflecting roller 26 seeks to lift.

The position of the lever 38 is controlled by a second lever 41 by means of one of the two levers 38 and 41 coupling handlebar 42nd determined. The lever 41 is mounted on a pin 43, which on one on two Fixed pin 44 horizontally displaceably guided adjusting slide 45 is seated and in a longitudinal slot 46 of the lever 41 engages. At its front end, the adjusting slide 45 has a toothing 47, in which a pinion 49 engages, which is used to adjust the angular speed of the chest tree 27 and thus the pre-clipping speed of the warp thread 11 and the fabric 13 are used Handwheel 48 is rotatably connected. When turning this handwheel 48 clockwise, the one Corresponding to the increase in the feed rate, the slide 45 with the pin 43 in adjusted horizontally to the left.

The movements of the levers 38 and 41 and thus the two deflecting rollers 15 and 26 are by means of controlled by a slide 50, which is articulated with a bolt 51 on the lever 41, in one on the machine frame fixed guide 52 is vertically displaceable and with a pin 53 in a cam groove 54 of a Gear 55 engages; the latter is freely rotatable on a pin 56 seated on the wall 30. In the vicinity of its uppermost position, the slide 50 can be locked by means of a ratchet lever 57, the carries a pin 59 reaching under a nose 58 of the slide 50 and on a pin 60 on the wall 30 is pivotably mounted. A spring 61, one end of which is seated in the wall 30 Bolt 62 is hooked and engages by means of a bolt 63 on the ratchet lever 57, pulls this against the Slide 50; the bolt 63 also serves to pivot this slide around the pin 59 by hand to be released from engagement with the slide lug 58.

ίο The gear 55 is by means of a machine drive from gear 64 held in rotation in the direction of arrow 64 α. The gear 64 leads per machine cycle, d. H. viewed at the time of the passage of a shooter 21 at one Until the next shooter has passed, turn off one full turn at this point, and that Gear ratio from wheel 64 to wheel 55 corresponds to the reciprocal of the number of on the shuttle 21 omitted from the weaving width; in the present embodiment, with four shooters run one after the other across the web, this transmission ratio is 1: 4. The wheel 55 points an toothless recess 65 in which the continuously revolving gear 64 rotates without take the bike 55 with you.

From the point 66 of the cam groove 54 at which the pin 53 engages in this groove when the Slide 50 is in its lower end position, up to point 67 of the groove at which this pin is located is at the highest position of the slide 50, this groove rises against the direction of rotation 55 a des Gear 55 spirally, while it drops steeply from point 67 to point 66.

The operation of the described embodiment of the device is described below Referring to FIG. 2 to 5 explained.

In these figures, 11 again denotes the warp threads and 24 the weft threads. At 17 the shafts serving for shedding are indicated schematically, at 22 the mentioned organs are indicated, which act both as a shooter driver 22 α for the shooter 21 as well as a striker 22 b acting behind each shooter for the weft thread 24 emanating from the shooter. The stop front is shown in FIG

the line up to which the organs 22 acting as strikers 22 b push the inserted weft thread 24 forward in order to strike it against the tissue 13 that has already been produced.

If the front deflecting roller 26 were in its uppermost pivot position, in which it would remove the fabric 13 just touched and its axis parallel to that of the chest tree 27 and parallel to the front of the stop 18, if the fabric 13 is not warped, the weft threads 24 should be in the region of the

Stop front 18 parallel to those of the fabric 13 and 12 wound on the tree 12 thus, if these are to be at right angles to the warp thread 11, parallel to the stop front 18 run (Fig. 3).

But since at every moment several weft threads 24 each at one point of the weaving width through one each Shooters 21 are entered and at each point the last entered weft thread to the front 18 is posted while the previously entered

Weft threads are already in front of the fabric 13 again, the weft threads must be used in the normal weaving process 24 in the area of the stop front 18 with this one opening to the shooter entry side (left)

form a small angle α (FIG. 2). This angle α is depending on the number of simultaneously within the Web width located shuttle 21 and different depending on the density of the weft threads. For example, it amounts to with a weaving width of 2160 mm, an S shuttle spacing of 240 mm (i.e. nine shuttle bars on the weaving width) and a density of ten weft threads per centimeter around 0.25 °.

In Fi g. 2 is now with 24 a a weft thread which is torn at point A and of which therefore only half was entered into the fabric, and 24 z denotes the previous, last whole weft thread. To remedy the error caused by the tearing of the weft thread 24 a, all threads 24 b up to 24 h and the torn thread 24 a itself, the right half of which is missing, must first be removed from the fabric. The thread must also be removed from the shuttle 21 located within the weaving width. '

If the weaving was now to continue, the beginning of the first newly inserted weft thread - it is denoted by 24 i - would come to lie immediately behind the point at which the beginning of the rearmost previously removed thread is located when the organs 22 acting as slingers 22 b are banged 24 ft and there would be an open alley between the parallel wefts 24 z and 24 /, which of course is unacceptable.

This deficiency could not be remedied in that the warp 11 would be withdrawn by turning the warp beam 10, the chest beam 27 and the fabric beam 12 until the last weft thread already inserted ΤΑζάώ. the point of the furthest removed weft thread 24Λ would come; because then this and the weft threads entered in front of it would come to lie behind the stop front 18, increasing to the right, and the stopper 22 b acting along this would only compress the fabric 13 already produced so that the weft thread withdrawn at the point of 24 A. 24 ζ would be pushed back into the stop front 18 and the threads entered in front of it behind this stop front. As the weaving continues, the advancing of the chain 11 along the stop face 18 at the same time as the thread 24 i is inserted would again result in an alley, this time of triangular shape with a width increasing to the right.

The mentioned deficiency could not be remedied by the fact that the chain 11 would only be withdrawn until the weft thread 24 z came to lie in the place of the last completely inserted and now removed thread 24 d. Then a displacement of this thread 24 z and threads lying in front of it would be avoided when hitting along the front 18, but the connection of the new fabric to the existing one would not be established on the left fabric edge. Between the threads 24 z and 24 /, which are parallel in this case, there would again be an alley without weft threads.

With the in F i g. 1 device shown, this deficiency can now be avoided.

During undisturbed weaving, the left end of the deflecting roller 26 is in the position shown in FIG. 1 visible deep position in the slot 32. If now, as shown in Fig. 2 and explained above, the weft thread 24 α torn at A , and this thread 24 a and all weft threads 24 b to 2Ah entered after it are removed from the fabric and If the shuttle 21 located within the weaving width is also emptied, the ratchet lever 57 is pivoted to the left by means of the bolt 63 and its pin 59 is released from engagement with the nose 58 of the slide 50. This enables the spring 39 to move the front ends of the levers 38 and 41 upward. The left end of the deflecting roller 26 then moves upwards in the slot 32 to its upper end, so that the axis of this roller comes to lie parallel to that of the breast tree 27. The left end of the deflecting roller 15, however, migrates downward in the slot 31. The path of each warp thread 11 between the warp beam 10 or the backrest beam 14 and the guide roller 16 is thereby lengthened, while that between the guide roller 25 and the breast beam 27 or the fabric beam 12 is shortened by the same amount; this amount increases over the weaving width from right to left. The section of each warp thread located between the guide rollers 16 and 25, in the area of which the stop front 18 lies, is thus shifted backwards by a distance increasing from right to left. The increase in this displacement from the right to the left fabric edge is not exactly linear, so that each weft thread follows a weak arc, but its deviation from the straight line is insignificant. The displacement is so dimensioned that it practically eliminates the original inclination of the weft threads 24 in the area of the stop front 18 and the tendons of the arches, which these weft threads follow, are now at right angles to the warp threads 11. The weft thread 24 ζ entered last and not removed is now brought into line with the stop face 18 by rotating the warp beam 10 and the fabric beam 12 and thus evenly shifting all the warp threads, as shown in FIG. 3 shown. Then the machine is started again, but the drive of the switching and breast boom 27 and the fabric boom 12, that is, the uniform advance of the fabric 13 and all warp threads 11, still remains switched off.
• Before the slide 50 is released, the pin 53 is in the steep part of the cam groove 54 of the gear 55 just below its point corresponding to the highest position of the slide 50, since the gear 55 in this illustration due to the recess 65 is out of engagement with the drive gear 64 is. After releasing the slide 50, the pivoting of the lever 41 brought about by the spring 39 and the downward movement of the slide 50 as a result of this course of the cam groove 54 causes the gear 55 to rotate in the direction of the arrow 55 a until its teeth adjoining the recess 65 are engaged with the drive gear 64. If the latter begins to rotate when the machine is restarted, it also drives the gear 55 in the direction of arrow 55 a. During this rotation, the cam groove 54 pushes the pin 53 and thus the slide 50 upwards until its nose 58 releases the path of the pin 59 and the pawl lever 57 under the action of the spring 61 moves into its position shown in FIG. 1 shown locking position returns. This is the case when the highest point 67 of the cam groove 54 has almost reached the pin 53. The slide 50 is raised a little further with the further rotation of the gearwheel and afterwards

009 648/96

the highest point 67 of the cam groove has passed the pin 53, again lowered somewhat. At this moment sets the drive of the gear 55 through the drive wheel 64, because the recess 65 this comes face to face. Since the pin 53 is now in the part of the steeply sloping from 67 to 66 Cam groove 54 engages, the gear 55 is by the action of the spring 3? downward going Slide 50 rotated further until its nose 58 comes to rest on pin 59; the recess 65 is then opposite the drive gear so that it is completely out of engagement with gear 55.

In this case, the gear 55 has made a full turn and the drive gear 64 has made as many rotations as shooters 21 follow one another across the width of the weave, that is to say four rotations in the present example. During this time, by gradually lifting the slide 50 into its original locking position, the levers 41 and 38 and the deflecting rollers 15 and 26 have been pivoted back into their starting positions. As a result, the path of the warp thread from the warp beam 10 to the stop front 18 has been shortened by an amount increasing from right to left; have experienced an advance increasing from right to left by this amount. The weft threads 24 already entered, the last of which was thread 24 z, thus gradually regain their original inclination according to FIG. 2 reached. At the same time that shooter 21 who, when restarting the machine, began to insert a new weft thread 24 / on the left edge of the weaving width immediately behind the stop face 18 and behind the retracted weft thread 24 z, pulled this weft thread 24 i over the entire weaving width; its position in relation to the stop front 18 corresponds at this moment to that of the weft thread 24 d in FIG. 2.

From FIG. 4, the position of this thread 24 / currently being entered can be seen in which of the shooters 21 releasing this thread is slightly more than the distance between two successive ones Protect has gone through and the weft threads already entered up to and including the Thread 24 z by the different advance displacement of the warp threads 11 a little more than a quarter their original inclination. This is on the left edge of the weaving width even in front of the stop front 18, additional space for entering another one that has just begun Weft thread was created 24Jt.

F i g. 5 schematically shows the stage of weaving process, in which are indexed the weft yarns 24/24 and k entraining contactors 21 to a rifle division and the already wefts another quarter have regained their original inclination. The insertion of a third weft thread 24 / has already started. .

In a subsequent, not shown in the drawing stage of weaving the weft yarns 24/24 * and 24Z were added about as far as the threads 24 e, 24 f and 24g in Fig. 2, and the inclination of the weft threads of the fabric already correspond almost the one shown in FIG. 2 shown.

The insertion of a fourth weft thread, which would have been designated as 24 m, would have started in the same way as that of the thread 24 h in Fig. 2 ^.:

After the thread 24 / has been entered completely and the deflecting rollers 15, 26 completely into theirs have returned to the original positions, the drives of the switching and chest tree 27 as well of the goods tree 12 switched on, and the machine continues to work without adjustment.

ίο The adjustment of the setting slide 45 at Turning the handwheel 48 to change the rate of advance of the tissue causes the The machine works during the described process of changing the density according to the feed rate the weft is adjusted.

The pin 43 on which the lever 41 is mounted is on the adjusting slide 45 at such a height arranged that the slot 46 of the lever 41 is horizontal when the slide 50 is in his

ao is in the lowest position, d. H. the pin 53 of which engages in the cam groove 54 at the point 66. If this is the case, the left end is the exit, steering roller 26 in its uppermost position, the axis of this roller is parallel to that of the breast

»5 tree 27, and the warp threads 11 and weft threads 24 are in the position according to Fig. 3. This state of the machine is independent of the feed speed, because in this case the horizontal displacement of the pin 43 when turning of the handwheel 48 has no effect on the horizontal position of the lever 41.

The feed speed of the fabric 13 is set by turning the handwheel 48 clockwise increased, the pin 43 moves in the slot 46 to the left. As a result, the distance decreases between the pins 43 and 51 and increases the angle by which the lever 41 at the by the rotation of the gear 55 caused the slide 50 to move upward by a constant Route is pivoted. Also the angle by which the lever 38 and thus the deflecting rollers 15 and 26 pivoted during the upward movement of the slide 50 increase accordingly. The angle «that the weft threads 24 make with the tack front 18 after locking the slider 50 by the latch lever 57, i.e. during normal Operation of the machine, form (Fig. 2), is consequently, as required, the greater the higher the feed speed of the chain 11 and the fabric 13 in relation to the constant Speed of the shooters is 21.

The in F i g. 6 differs from that shown in FIG. 1 in that that between the backrest, designated here by 70, and the stop front 18 and between this and the breast boom marked 71, the guide and deflection rollers 15, 16, 25 and 26 miss. The axes of the warp beam 10, one arranged between this and the backrest beam 70 Guide roller 72, which in this case is driven by the breast

. tree 71 different shift roller 73 and its pressure roller 28 as well as the tree 12 are parallel to each other.

The backrest 70 is with its left end in an upper projection 30 α of the left side wall 30 of the machine, not shown, with his right end in one extending over the entire length of the machine, in the longitudinal direction

horizontally displaceable carrier 74 mounted. Is also stored, and is supported by a front to a BolzenlOö the Brüstbaum b 71 is in an upper projection 30 attached to the wall spring 107 to the left side wall 30 and in the carrier 74th pulled and pressed against the pin 101. With 108 the carrier 74 is slidable on two bolts 75, an eye of the frame wall 29 is referred to, guided by the on the in F i g. 6 only partially shows which the lever 104 is held at a distance from the wall on the right side wall 29 of the machine frame surface. Own in their rear part. The backrest 70 and the chest tree 71, the pawl 102 sits a shoulder 109, with which they can thus be pivoted in a horizontal plane and can snap into place on the pin 101; however, the lever 104 will remain parallel to one another. by moving forward from the control lever 87

During normal operation of the loom, the stretching arm 110 is in the drawing representation of the carrier 74 in such a way that the axes of the position held, in which the heel backrest 70 and the chest tree 71 are parallel. 109 is further back than the pin 101.
to the stop front 18 and to the axes of the chain The gear 92 bearing the cam 93 tree 10, the shift drum 73 and the goods is freely rotatable on a pin 111 on the frame tree 12 are. Since in this operating state, such as 15 wall 29 stored and can be explained by means of a drive with reference to FIGS. 1 and 2, the weft gear 112, which when the machine is running stänfäden24 with the stop front 18 necessarily rotates clockwise, counterclockwise Form angle «are due to the parallelism in a clockwise direction with a speed ratio driven by the. Stop front 18, the breast beam 71 and the one that corresponds to the reciprocal value of the number of goods tree 12 the weft threads24 des.auf these »ο shooters21, which are at the same time within the wound fabric 13 not at right angles to the weaving width. The toothed wheel 92 and the warp thread 11, but with them form a cam disk 93 so lead a full UmWinkel that deviates by α from the right angle. rotation off, while a shuttle 21 passes through the whole Because α usually only a small fraction of the weaving width. In the case of the in FIG. 6 makes up an angular degree, this deviation 35 rotational position of the gear 92 engages can, however, be tolerable. Toothing of the drive gear 112 in a die

The displaceable carrier 74 has a recess toothing of the gear 92 interrupting Ausmung76, in which a recess 113 on a pin 77 on the circumference of the latter, so that pawl 78 pivotally mounted on the side wall 29 could not drive this easily. With engages when the backrest 70 and the chest 3o the drive gear 112, a cam disk 114 is connected to the tree 71 parallel to the warp and to the tree with a recess 115, on whose standing, as required by normal operation. One catches a tension spring 79 attached to the upper end of the lever 104, on the one hand on a pin 80 on which the roller 116 runs when this lever 104 is not pawl 78, on the other hand on a pin 81 on which is pivoted forward by the arm 110.
Suspended on the frame side wall 29, this pawl holds 35 To adjust the pin 89 on which the in engagement with the recess of the carrier 74; Control lever 87 is pivotable, serves as a Verdoch, the pawl 78 can be released by hand against the positions of the pin 43 in the first execution of the force of the spring 79 from the engagement mentioned play a handwheel 48, by means of which the advance will be. Farther back, a tension spring 83 engages on the carrier 74 speed of the chain 11 and the fabric 13 in the seated bolt 82, which can be changed to a bolt 84 attached to the frame wall 29 in relation to the running speed of the shooters 21. By turning this hand one seeks to pull the carrier 74 forward. rades48 clockwise, the above-mentioned advance is finally increased the thrust speed on the carrier 74 by means of a pin 86 and at the same time articulated by means of a control lever 87 for the displacement of this pinion carrier, which is non-rotatably connected to the handwheel. The control lever 87 has a longitudinal slot 88 which is guided on two bolts 44 and with which it pivots on a pin 89 that can be adjusted in the vertical direction of the toothing, which meshes with the pinion 49, and carries the pin 89 is stored. moved down. By shifting the

At the lower end of the lever 87 there is a pin 89 to be down with unchanged

Pin 90, which is in a cam groove 91 with a 5 <> Stroke of the pin engaging in the cam groove 91. 90

Gear 92 connected cam valve 93 engages. the deflection angle of the control lever 87, the

The cam groove 91 has a short radial displacement path of the carrier 74 and the angle around

cut 94, the inner end of which over one in which the back tree 70 and the chest tree 71

In a clockwise direction gradually rising spiral-shaped with respect to the warp beam 10, the fabric beam 12

Section 95 is connected to the outer end. 55 and the stop front 18 are pivoted, ent-

In the circumference of the cam 93 there is a detent 96 corresponding to the aforementioned feed speed

formed, in which enlarged in the rotational position of the disc.

93, the pin 90 87, the explanation of the operation of 94 of the cam groove, located in the lever in the radial For this EinAbschnitt 91 a in the direction is taken back to FIG. 2 to 5 of geeinem pin 97 on the frame wall 29 pivotally ^6o. It is to be noted merely that engages in norpelaRerter detent lever 98 under the action of painting operation of the loom of the back rest 70 tension spring 99, which on a bolt 100 and the breast beam is suspended 71 parallel to the abutment front 18 of the frame wall 29th In addition, the weft threads of the fabric 13 and the cam disk 93 carries a pin 101 which, when wound onto the tree 12, still has the same rotary position of this disk as a stop for ⁶ 5 the same inclination at the angle α as a pawl 102 ; this is shown in FIG. 2 by means of a pin.

103 hinged to a lever 104 which, when a weft thread 24a is inserted into the

Bolt 105 on the frame wall 29 is torn in a pivotable manner; point A (FIG. 2) is torn when the

13 14

guide form according to Figure 6 after the shutdown of the cam 93; by rotating it becomes

Machine first the pawl 78 von.Hand pushed aside by means of the locking lever 98.

Bolt 80 out of engagement with the recess 76. The gear 92 now rotates one full turn

of the carrier 74 released. The spring 83 then pulls this out, while successively full shooters 21 between.

Carrier 74 forward, making the backrest 70 5 see the. Warp threads 11 enter. At this time

and the chest tree 71 around its bearing points in the rotation of the gear 92 is now in the steep

Projections 30 α and 30 b swing forward, lowing section 95 of the curve nul 91 protruding

the warp thread 11 in the area of the stop front 18 pin 90 is gradually pressed to the left. The tax

a distance increasing from left to right lever 87 rotates clockwise as a result

be pulled forward and the already completely io around the pin 89 and moves the carrier 74 en-

or partially inserted weft threads from the chest against the force of the spring 83 to the rear, so that

tree 71 up to and including the weft thread 24 h parallel the axes of the backrest tree 70 and the chest

to the stop front 18. tree 71 gradually to their bearings in the

The displacement of the carrier 74 is limited to frame projections 30 α and 30 b in their normal conditions at the respective weft density for this drive position parallel to the stop front 18 and to allele position required path that the ■ the axes of the warp beam 10 and the goods -Pin 90 at the lower end of the control lever 87, the tree 12 can be pivoted back. .
From the carrier 74 by means of the pin 86 around the through this pivoting movement the feed caused by the adjustable pin 89 counterclockwise rotation of the switching drum 73 is pivoted, the inner end of the radial 20 outermost warp thread to the right (from the tree section 94 of the cam groove 91. Seen through this) compensated, so that this warp thread does not experience any advancement of the warp thread by one from the left to the displacement. The outermost warp right increasing the left path is created between the on the other hand, the trees will be 70 any point in the weaving width last registered and 71 practically · not affected by this tilt, as it in the near wefts 24 d bis'24 h and stop front 18 25 close Pivot points of their axes, and its a distance increasing from left to right. The feed through the shift drum remains undiminished.

Thereupon the torn weft thread 24 α and the remaining warp threads experience as a result the weft threads 24 b to 24 h entered after it. from the right (shooter exit side) to the left from the fabric, which, in contrast to the (shooter entry side) increasingly different embodiment because of the mentioned 30 borrowed feed relative to the stop front 18. The distance between the last weft threads 24 d to the resulting shift of the warp thread as a result of 24 Λ many times over is possible without further, even further advance of the feed through the switching drum 73 and the shifting of the warp thread forwards. Pivoting of the backrest 70 and the chest. Also from the tree standing within the weaving width is the same as that for the first off-shooter 21, all threads are removed. 35 is then an exemplary embodiment with reference to FIG. 2 to 5 explanations parallel to the stop front 18 last square. During this rotation of the control lever 87 weft thread 24 z, which has remained in the fabric 13, its arm 110 pivots the lever 104 in the opposite direction by turning back the warp beam 10 and clockwise so that its roller 116 overlaps the fabric beam 12 with the stop front 18. Area of the disk 114 leaves. When the carrier 74 attuned so that the FIG. 3 has reached the aforementioned normal operating position, the state has been reached. . '■. the pawl 78 falls under the action of the spring 79

While the pin 90 in the radial section 94 into its recess 76. At the same time comes the the cam groove 91 moves inward, it follows the recess 113 of the gear 92 opposite the Arm 110 of the control lever 87. Therefore, the drive gear 112 can stand so that its lever 104 now come under the influence of the toothing on the 45 and disengage the gear Pawl 102 acting spring 107 clockwise with the cam 93 is stationary, namely in the turn, taking this pawl with it to the left, rotating position shown in the drawing so that its shoulder 109 with the pin 101 of the curve which the locking lever 98 again in the locking 96 and disk 93 comes into engagement. At the same time, the pin 90 of the control lever 87 comes into the radial abdomen at the upper end of the lever 104 mounted roller 50 cut 94 of the cam groove 91 engages. The rear 116 in contact with the cam disk 114, and flank of this radial section of the cam groove although it engages in its recess 115, which it serves in this case when it hits the pin 90th as faces this operating state. Stop for locking the cam disk 93,

Now the machine, this time including up this pin through the lever 87 again

Drive of the switching tree 73 and thus the chain 55 is moved inside.

Feed, set again in ¹ gear, and the on. In the devices according to FIGS. 1 and 6 it is drive gear 112 begins to turn clockwise to not absolutely necessary to rotate the warp thread 11 between. Since the recess 115 of the warp beam 10 connected to it and the stop face 18 above which the cam disk 114 leaves the roller 116, a roller 15 or 70 is to be guided, the pivoting of which the lever 104 moves counterclockwise with that of the roller 26 or 71, which pivots and the pawl 102 hinged to it is displaced according to the different longitudinal displacement of the warp right. By engaging its threading 11 it is pivoted, set 109 inevitably coupled to pin 101 is the cam disk. The pivoting movement of one of the two 93 and the gear 92 connected to it is rotated counterclockwise by the lever 38 or the carrier 74 with one another, so that the toothing 65 of the coupled rollers 15, 26 and 70, 71 serves namely this gear behind the recess 113 with ^ lent only to the tension of the warp threads between the drive gear 112 comes into engagement. This ^ these rollers when pivoting the other now takes over the drive of the gear 92 and ^ to keep the roller approximately constant; this happens

15 16

in the described devices in that, however, the distance by which the individual warp

the support point of each warp thread on the rear thread 11 in the device 120 is pulled forward

Deflection roller 15 or on the backing beam 70 are not linear across the width of the fabric

whose or whose inevitably controlled swiveling changes, small ones arise in the warp thread tension

5 differences caused by the elasticity of the threads

will be pushed like the support point of the same chain will be compensated.

thread on the front deflection roller 26 or on The device 120 can with a same

the chest tree 71. Mechanism and controlled in the same way

The same effect can be achieved with the device shown in FIG. In this device on the previous figure controlled io or the carrier 74, 10 in turn denotes the warp beam, 11 the end of the device according to FIG. 1 or 6.
warp thread running off from it, 17 the shafts - the in F i g. 6 illustrated and above tegruppen to the formation of sheds 19 with upper required device has the disadvantage that the warp threads Ua and bottom warp yarn 11 b, 18, the weft yarns 24 in the generated tissue does not exactly abutment front 27 of the breast beam, 73, the switch 15 in the right At an angle to the warp thread 11. To roller, 28 the pressure roller and 12 the tree to avoid this, it could be ensured that on which the fabric is wound. With 120 in a facility according to FIG. 1 or 6 at nor is a device for different demands of the weaving process, the stop front 18 is not in the direction of the path of the warp threads 11 between the right angle to the warp threads 11, but from the lay front 18 and that to the tree 12 para- ao left to right runs obliquely forward, and labeled with allelic breast tree 27. This device can make the axis of the breast tree at an angle from, for example, as in the device according to the above with reference to FIG. 2 defined size α Fig. 1 forms a guide roller 25 and one on its. Since this angle is different depending on the pivotably mounted deflection roller 26 weft density, the position would then have to encompass. However, according to a variant that is not represented by the stop front also for normal operation, it could also be changeable as in the case of the device, in order to use tissue on the machine as shown in FIG. 6 adjustable chest tree. to be able to produce different shot density. because

Instead of one with the other end of the deflection but the back and forth moving organs 22 that work as a roller 26 coupled second deflection roller or stop 22 \ b and whose movement of a pivotable spanning tree now has the 30 reversal points form the stop front, also as a device according toFig. 7 a device for self-contactor driver 22 a have to work, would also have to make balancing of the warp thread tension. This the path of the shooters 21 together with the device can be adjusted between the strike front instead of the spanning tree.

the warp beam 10 and the shafts 17. Such a machine could thus be realized approximately in the and comprises two parallel to each other and to the warp 35 way that the guide rollers 121 and 122 mounted on the supports 21, beam 10, the members 22 and their guide , Control and a dancer roll 123, the mechanism for introducing guide rolls between these drive means lies freely on the warp threads 11 and carries and beating the weft threads as a whole only with their two end journals 124 vertically with respect to the machine frame by one the kale slots 125 of the frame side walls out 40 axes of the warp beam 10 and the tree 12 is. The diameter of the dancer roller 123 is the same as the vertical axis would be pivotable,
the clearance between the guide rollers. A different displacement of the warp threads 121 and 122 so that the warp threads 11 always loop around them U for further weaving in the case of a weft thread, and. braches would then also not be necessary, since the tensile force that it exerts on this warp thread could be pivoted only by its weight, but not by its whole, in such a way that the altitude depends . The dancer roller 123 thus holds the stop front at a right angle to the warp thread, the warp threads 11 and thus the fabric 12 running under (FIG. 3), whereupon it moves in accordance with the entry of constant tension. new weft threads with simultaneous advance of the

If the path of all warp thread 11 of this fabric 50 fabric and the warp through the shift drum is around between the guide roller 122 and the goods - the left end point of the stop front 18 in the clock tree 12 would be pivoted forward clockwise by the device 120 for the same length until it reaches the angle α hold, these warp threads also form between the described and its normal operating position is reached Guide rollers 121 and 122 of equal length loops. To effect these pivoting movements and the axis of the dancer roll 123 parallel to 55 could serve similar devices as those in FIG those of the guide rollers. If, on the other hand, the F i g. 1 and 6 shown devices for Ver-Kettfadenwege in the device 120 to pivot the deflecting rollers 15 and 26 or des from one to the other side of the fabric spanning tree70 and the chest tree71 (Fig. 6). 13 linearly increasing distance and there- With such a design of the machine through the individual warp threads around this distance after 60, the construction of the drive would offer as a whole pulled forward, the chain-pivoting mechanism shortens some threads of difficulty between the guide rollers 121 and 122 th. Above all, there would be a certain mutual formed loops accordingly, and the dancer minimum distance of the warp threads 11 required so Roller 123 is in one of the named one the organs 22 their reciprocating motion perpendicular after the mentioned other side increasing 65 to the stop front 18 also then unhindered from dimensions pulled up, but without the can lead when this stop front with the the tensile force exerted by it on these threads and so the warp threads do not form a right angle. Under ummit the tension of these threads changes. As far as they stand it must be accepted that this

. 009648/96

17 18

Organs 22 each time the warp thread goes down, with this sinus line belly in the corresponding 11 press something aside and rub against them. Compartment 19 at a right angle to the direction of displacement - These disadvantages can be avoided if the drive rods 132 do not run across the web, the sliders as in the width described so far, whereby the slugs 22 ft of the embodiments contained in it, from the- 5 cut to length weft thread 24 are formed between the warp thread the same organs as the Schützen- llla and lift enters. The shooter rests here with drivers, but with respect to these are movable, a flat, lying in front of the said rib and if means are available which control the moving surface 138 on the bearing surfaces 135 of the narrowing of this stopper in such a way that the The shooter driver 130. ^] Movement reversal points forming the stop front 18 Behind the shooter driver 130, each drive rod 132 carries a pin 139, on which the stop 131, designed as a lever, can be changed with the direction of travel of the shooter forms. In Fig. 8 to 10 is a pivotally mounted. Each striker extends i the drive mechanism for a shooter driver 130 above this pin along the same plane and an associated with it, designed as a lamella 15 as the associated shooter driver 130 between the connected stop 131 and a device for the adjacent warp thread 11 so far up that it. j Controlling the movement of a number of such to each of these, also shown in the most highly ranked club, which fulfills these requirements. above deflected position lla protrudes. Ad j

Each contactor driver 130 is driven, and the two stops 131 support one another at the side for example, from a cam, not shown, ao Licher direction with the help of their upper ends the one with the corresponding drive cams for the existing support shoes 140 with parallel side other Contactor driver of the machine on a borrowed sliding surface of sufficient length so that; common, these shoes continuously touch each other during operation, even if the I. rotating control shaft. Of these cams with them provided adjacent stops 131; For each contactor driver, a drive becomes the largest that occurs in the company form rod 132 in an existing angle in the machine frame. j guide 133 along a to the warp thread 11 par- With its fork-shaped lower end 141 is j allelic plane between an invariable in front of each stop 131 pivoting on a pin 142; whose end position 132 a and an unchangeable one that sits on a slide 143 is held in place. from teren end position 1326 moved back and forth. On every 30 of these slides 143, every third one engages with two Drive rod 132 sits a contactor driver 130, the pins 144, 145 in a direction of movement of the in the rear end position 132 ft of the rod between drive rods 132 parallel groove 146 of a fixed see the two levels in which the adjacent traverse 147 of the machine frame. Since the Schie-Kettfädenll through the shafts 17 upwards, lla, berl43 touch each other laterally, they are on this and below, 11 ft, are deflected in that 35 way, all parallel to said direction of movement lift, the warp thread that runs straight down. Their undersides rest on an adjustable joint is, passing in the just passing lever 148, which is on a vertical pin 149 on Shed 19 extends into it. In the front end - the left side of the machine on the traverse 147 location 132 a of the drive rod 132 is pivotally mounted and in its top a Shuttle driver 130 has a longitudinal groove 150 entirely outside of the shed 40. Each slide 143 carries 19, as indicated by dash-dotted lines at 130 a. a pin engaging in this longitudinal groove 150, the

In the upper edge of each shooter driver 130, a dovetail-shaped recess 134 and called pin 144 are formed for every third slide, and a special pin 151 is formed on the other sliders for the direction of displacement of the shooter driver.
parallel support surface 135 for each passing 45 To clarify the drawing, in FIG. 9 running shooters 21 formed. The cycles of the reciprocating slide 143 drawn in and backward movement of the individual drive rods 132 net than the machine actually has and than in and the gun driver 130 sitting on them are FIG offset that the other require, are indicated,
approximately vertical rear boundaries of the excercise 50 While the drive rods 132 now go back and forth between recesses 134 an extreme positions 132 a and kel to the direction of movement of the drive rods 132 and 132, which continue to be unchangeable in the right-hand wind, they cause each of them to move from the left to the left Right-shifting sine line 136 form stop 131 with the associated pin 142 (FIG. 11). With 136a in Fig. 11 the front as a fulcrum around a practically constant, with 136 ft the rear extreme positions of the 55 angles between a front extreme position 131a and a rear extreme position 131 ft back and forth are drawn, and with α in FIGS. 8 to 11 their oscillations are the same. However, these extreme positions are not given as permanent travel. unchangeable, since the slide 143, which

The rearwardly directed bellies of these sinusoidal pegs 142 are carried by pivoting the

line lie within the lever 148 of the shafts 17 from 60 about the axis of the pin 149 below.

The wandering sheds 19 formed by the warp threads can be displaced differently. The single

Each shooter 21 has on its underside a rib of individual slides 143 parallel to each other by stretching

137, which moved into the recesses 134 of a number corresponding to the distances between the axes of their

Shooter driver 130 fits, the rear limit of which guide grooves 146 from the axis of the pin 149

genes are proportional to one of the 65 mentioned in the apex and thus from the left to the

the backward-facing bellies of the sine line, increase linearly on the right side of the machine. Will

so that the shooter concerned by the back and the lever 148, for example, from a position in

Movement of the screw driver 150 forced its longitudinal groove 150 at right angles to

the guide hats 146 runs, in the position according to Fig. 9 pivoted backwards, everyone comes Slide to lie a little further back than the one against the pin 149, i. H. against the left Machine side adjacent. The swivel areas 131a-1316 of the, single attacker. 131 in increasing measure from the left to the right side of the machine front.

FIG. 11 illustrates the mode of operation of a device with the devices according to FIG. 8 to 10 equipped Wave loom at a position of the lever 148 which corresponds to normal operation of the machine. In this figure, the individual stops 131 are in cross section along the plane XI-XI of Fig. 8 indicated by way of illustration. With 131a is plotted the line in which the front edge of each stopper at its front, in Fig. 8 similarly designated extreme position comes to lie, and with 1316 the corresponding line for the rear ao Extreme position of the attackers. With 6 the path is indicated, which the leading edges of the slingers in the plane XI-XI measured between the two mentioned extreme positions.

As can be seen from Fig. 11, the striker 131 move in the same way as the shooter driver 130 according to a traveling sine curve; but they are due to the inclination of the lever 148 in of left to right with decreasing dimensions compared to the shooter drivers 130 offset to the rear. The line 131a, which is the locus of the front extreme positions of the front edges of the attackers forms, is identical to the stop edge 18. It forms with the direction perpendicular to the warp thread planes, d. H. the weft threads 24 which have already been entered and cast on in the fabric 13 small angle; the inclination of the lever 148 is to be chosen so that this small angle for the relevant weft thread density and the relevant distance between the successive shooters21 is equal to the angle α defined above. It is easily seen from Fig. 11 that in In this case, they form the apex of each forward-facing wave bulge of the stop sine line Slinger leading edges, measured in the direction of the warp threads, by one weft thread pitch lie further forward than the leading edge of the stopper that forms the apex of the next belly. Since between these two wave bellies a shuttle 21 the right end of a new weft thread 24 inserts, each weft thread is struck back by one weft thread pitch than the one inserted in front of him so that all the weft threads are struck parallel to one another and perpendicular to the warp thread will.

If a weft thread break occurs, the machine is switched off and the lever 148 on the right-hand side of the machine is pulled forward until its longitudinal groove 150 is at right angles to the direction of movement of the rods 132. As a result, the lines 131a (stop front) and 1316, which define the extreme positions of the stopper 131, are rotated counterclockwise when viewed from above (FIG. 11) and come to lie at right angles to the warp threads 11 and parallel to the weft threads 24 of the fabric 13, as indicated at 131a 'or 1316'. You then remove the torn and all weft threads inserted after it or still present in shuttlecocks within the weaving width, and the last weft thread 24, which has been completely inserted into the fabric, is returned by pulling back the warp as far as the stop front 131a ', whereby the weft thread shown in FIG. 3 analog state is established. The machine can then be restarted, including advancing the fabric 13 and the chain, ensuring that the lever 148 is gradually returned to its normal operating position during the time it takes for a shuttle 21 to travel the full width of the weave will. The right end of the stop front, which now rotates back from 131 α 'to 131a, follows the advance of the fabric 13, while its left end remains in place, so that the feed of the warp thread in front of the stop front creates space for the weft threads that are still attached. To actuate the lever 148, an automatic control device of basically the same type can be provided as is shown in FIG. 1 for pivoting the lever 38 and in FIG. 6 is provided for moving the carrier 74. When the lever 148 is pivoted back, the angle between the inserted weft threads 24 and the stop front increases in the same way from 0 ° to <x, as illustrated in FIGS. 3, 4, 5 and 2, with the difference that the weft threads are now stay at right angles to the warp thread and the front of the cast is inclined.

Claims (12)

Patent claims: 1. A method for further weaving a being produced on a wave loom Piece of fabric in which the attack front and the weft thread direction form a small angle include with each other, after a work interruption, in which already entered existing weft threads have been removed from the fabric, characterized in that that the weft thread located between the last weft thread in the fabric and the stop face small angle is eliminated so that the front and weft threads are parallel to each other lie that then new weft threads are inserted and that during the complete Entry of the first new weft thread the angle between the tack front and weft thread direction is brought back to the previously maintained value. 2. The method according to claim 1, characterized in that that the angle between the stop face and the weft thread direction is eliminated by warping the fabric and adjusted to the one previously observed Value is returned. 3. The method according to claim 1, characterized in that the angle between the stop front and weft thread direction is eliminated by pivoting the stop front and returned to the value previously maintained. 4. The method according to claim 1, characterized in that that the advance of the fabric is only resumed after the first new weft thread has been completely inserted and up then the angle between the tack front and the weft thread direction by pivoting the weft thread direction in the feed direction or I 535 the attack front in the opposite sense a point located on the fabric edge on the guard outlet side on the previously observed Value is returned. 5. The method according to claim 1, characterized in that the advance of the tissue on its entire width is taken up again at the same time as the insertion of the first new weft thread is, while the angle between the attack front and the weft thread direction is through Pivoting the weft thread direction against the feed direction or the stop front in the feed direction around a point located on the edge of the fabric at the entrance to the guard to the point before returned value. 6. Device on wave looms for carrying out the method according to claims 1 and 2, characterized in that between the warp beam (10) and stop front (18) and between the stop front (18) and goods ao tree (12) each one across the Deflection roller (15, 26; 70, 71; 123, 26) extending over the weaving field is provided for the warp thread sheet or for the fabric, which roller is pivotably mounted at one end and displaceably guided transversely to the longitudinal axis at the opposite end. 7. Device according to claim 6, characterized in that the displaceably guided Ends of the two deflection rollers (15, 26; 70, 71) are coupled to one another by a gear unit, which causes them to move in opposite directions by equal paths. 8. Device according to claim 6, characterized in that that the backrest (70) and the chest tree (71) the pivotable deflection rollers form and that both the string tree and the breast tree in the same way in one horizontal plane are pivotable and coupled to each other. 9. Device according to claim 6, characterized in that one of the two deflecting rollers is formed by a dancer roller (123) which is pivotable between parallel deflecting rollers (121, 122) in a vertical plane transverse to the warp thread, held at one end and free at the other end is. 10. Device on wave weaving machines for carrying out the method according to the claims 1 and 3, characterized in that the weft thread stopping device of the loom is pivotable about an axis which is essentially perpendicular to the plane of the tissue. 11. Device on wave weaving machines for carrying out the method according to claims 1 and 3 with a weft thread stop device with a plurality of stop. Lamellae, which can be moved back and forth parallel to one another and to the planes in which the individual warp threads run, and whose front reversal points form the stop front, characterized in that the stroke areas of the individual stop lamellae (131) can be moved along their paths to one another. 12. Device according to claim 11, characterized in that each stop lamella (131) is movably connected to a drive rod (132) which is movable to and fro in a constant stroke range (132a-132fc) , and that each stop lamella (131) a pin (142) is pivotably mounted, which is guided parallel to the pivot plane of the stop lamella (131) and is displaceable by means of a lever (148) which is common to all the stop lamellae and is mounted on one side of the weaving field. For this purpose 3 sheets of drawings