EP0459582A1 - Block and pulley tackle suspension for Jacquard machine and Jacquard machine with such block and tackle pulley suspension - Google Patents

Abstract

The pulley harness system for a Jacquard, where the warps can be positioned in three settings for the insertion of at least two wefts to weave double fabrics with a pile, has a set of complementary hooks working together for each pile point and two vertically-arranged pulleys each with vertically connected rotating rollers. Pulley cords are suspended below each set of complementary hooks from each hook. Each end of the pulley cord is secured to one of the hooks while its section hanging down passes over the upper roller of the pulley assembly. A second pulley cord is fixed to one hook to hang down lower than the pulley assembly to pass over the upper roller of the second pulley assembly and then pass back upwards over the lower roller of the first assembly and then back down to be bonded to a lower point at the Jacquard. A pulley cord passes over the lower roller of the lower pulley with one end bonded to a lower point at the Jacquard and its other end is connected to the harness for the warps.

Description

The subject of the invention explained below is a device for a jacquard machine with which the pile warp threads are brought into one of three possible positions for shedding in a double-piece weaving machine for each weft insertion. This invention relates in particular to a device which, on the one hand when it is connected to the hooks and on the other hand with one or more warp threads, can implement three possible positions of the warp threads connected therewith.

A jacquard machine of known type is namely provided with at least one arrangement of two rows of complementary hooks, each hook depending on the complementary row to which it belongs being carried along by one of two knives moving up and down in opposite phase and on the Knife moving up and down, on which it rests with a protruding part, - with a first possibility - can move with or - depending on the embodiment of the jacquard machine - with the help of known selection mechanisms - with a second possibility - in its upper or lower one Position can be held while the knife undergoes the normal up and down movement. Two opposing hooks that belong to a different, complementary row form a so-called hook set; although the hooks move with each other in the opposite phase with their associated knives, one hook - or both hooks - can be selected in its upper (possibly lower) position.

To weave certain weaves in double-piece pile fabrics, it is necessary that the pile warp threads are arranged in three possible positions. With certain bindings, these three positions need not be present for every weft at the same time, but it may be sufficient if two positions are taken in the first shot and two other positions in the second shot, so that after these two shots the three necessary positions of the warp thread be realized. The options required for such bindings are illustrated with the aid of FIG. 1 attached here, which schematically shows a two-piece, two-shot V-weave, which is woven with the aid of a pair of bobbins. The three possible positions of the pile warp threads are indicated as follows, with top (B), bottom (O) and center (M).

The weft threads of the lower fabric are indicated by the letters 10 and of the upper fabric denoted by the letters IB. Since the fabric is woven with the aid of a pair of bobbins, two wefts are used for each weft - one for the upper fabric BW and one for the lower fabric OW. The first six shots are shown vertically below with the consecutive numbers 1 to 6.

The two base fabrics consist of binding warp threads (7) and (7 ') or (8) and (8') and tension warp threads (9) or (10).

Furthermore, the pile warp threads, which form the pile, are woven between the two base fabrics - which are kept at a certain distance from one another - while the dead pile warp threads are bound either in the upper fabric or in the lower fabric. Depending on the figure (color) you want to get in the fabric, a - until then - pile-forming pile warp thread is bound in a particular weft in the upper or lower fabric, and a - until then - dead pile warp thread can be included in a particular Start the shot with the pole formation.

The five pile warp threads P1, P2, P3, P4 and P5 are indicated in FIG. 1, of which the pile warp threads P1, P2 and P3 are intended for integration in the lower fabric. The pile warp threads P4 and P5 are intended for integration in the upper fabric. The three necessary positions of the pile warp threads can be recognized in the figure as follows:
Position "down": the pile warp threads are under the flap IO of the lower fabric,
Position "up": the pile warp threads are above the flap IB of the upper fabric,
"Center" position: the pile warp threads are between the IO and IB knocks.
The following positions of the pile warp threads P1, P2 and P3 must be able to be assumed:
Any unpaired shot: "bottom" or "middle",
every paired shot: "below" or "above".
The following positions of the pile warp thread P1 are adopted in the wefts 1 to 6: bottom - top - bottom - top - middle - bottom.
The following positions of the pile warp threads P4 and P5 must be possible:
Every unpaired shot: "below" or "above",
every paired shot: "above" or "middle".
Thus, the pile warp thread P5 in the wefts 1 to 6 in a row for example the following positions:
above - middle - above - middle - below - above.

Consequently, you have to choose between two possible states of the pile warp threads for each weft, whereby a mutual combination of a total of two wefts per two wefts must make three positions possible. As a result of a selection of the hooks with the assistance of the device to which this invention relates, it must be possible to fire between each of the "bottom" and "middle" positions or between the "bottom" and "top" or "top" positions. and choose "middle". In the example described above, it is even necessary that the required options of a certain group of pile warp threads (P1, P2, P3) do not match those of another group of pile warp threads (P4, P5), so that the device in question here in two possible embodiments on a single jacquard machine will have to be present.

One possible embodiment of the known device, with which the options explained here above are implemented, uses a pulley suspension consisting of three associated elements and is illustrated with reference to FIG. 2 attached here. Each pulley element (1), (2) and (3) consists of two rotatable rollers (1 '), (1' '); (2 '), (2' '); (3 '), (3' '), which are attached to one another in the same area by means of a mechanical connection of their axes to one another. Each warp thread is connected via a harness cord to the lower end (4 ') of a pulley cord (4). The pulley cord (4) runs over the lower roller (3 '') of the lower pulley element (3) and is directed back downwards at the other end with a fixed or movable (adjustable) point or grid (5) connected, the upper pulley (3 ') of the pulley element (3) hangs in the loop, which is formed by a downward hanging pulley cord (6), the two ends of which are each higher on one of two lower pulley rollers (1' ') and (2 '') - or on pulley elements (1) and (2) - hanging at the same height, and, directed back downwards, are each fixed at a fixed point. The upper pulley wheels (1 ') and (2') of the designated pulley elements (1) and (2) each hang in the loop formed by downward hanging pulley cords (7) and (8), while each end of the pulley cord (7 ) or (8) higher on a hook of a set of two complementary hooks (9) and (10) or (9 ') and (10') is attached.

Provided that the jacquard machine provides for the upper position of the hooks (9), (9 '), (10), (10') to be selected, the method of operation can of this known device can be described as follows:

If no hook is selected, the hooks move up and down in opposite phase to one another, and the pulley elements hang at the same height because each pulley element is in the downward hanging loop of a cord (7), (8) is suspended, one end of which moves upwards and the other end moves downwards in opposite phase. There is no upward or downward movement of pulley elements; (Individual pulley cords (7) and (8) move on the rollers (1 ') and (2')) and the end (4 ') of the pulley cord (4) remains in the "down" position.

If one of the hooks, e.g. B. the hook (9) was selected in its upper position, then in the following phase of the hook movement the hook (10) is brought up a distance h (= stroke of the knife), and the pulley element (1) is raised over half of that distance (= h / 2). The pulley element (2) is in the previous position because neither a hook (9 ') nor a hook (10') was selected, and the pulley element (2) remains hanging at the same height. As a result of the lifting of the block and tackle element (1) over a distance h / 2, the block and tackle element (3) is also raised to that distance, which leads to a lifting of the end (4 ') of the block and tackle element (4) over a distance h leads. The warp threads connected to this are brought into the "center" position.

Now if z. B. the hooks (9) and (9 ') were selected, then the hooks (10) and (10') are raised over a distance h in the subsequent movement phase, whereby both the pulley element (1) and Move the block and tackle element (2) upwards over a distance h / 2. The block and tackle element (3) is consequently subject to a stroke over a distance h, as a result of which the lower end (4 ') of the block and tackle element (4) is pulled upwards over a distance of 2 hours. The associated warp threads are brought into the "up" position. Consequently, the warp threads can be brought into one of the three possible positions with each pick by selecting none, one or two hooks (9), (9 ') or (10), (10').

The disadvantage of this known device lies in the fact that two sets of complementary hooks (9), (10) or (9 ') and (10') are necessary to obtain these three options in combination with this device.

The aim of the invention is to provide a pulley suspension which, in combination with a set of complementary hooks, can create three possible positions for the warp threads connected to them, the number of complementary hooks need not be doubled and consequently the pulley suspension becomes less expensive, while all the necessary options for choosing the position of the warp threads are retained.

The object of the invention is a pulley suspension for a jacquard machine, which is connected in the length above with a set of complementary hooks and in the length below with one or more warp threads, with the choice of the hooks, it is possible to repeat these warp threads per repeat of 2 wefts in three possible positions to form the pile for the pile warp threads with each shot.

The pulley suspension according to the invention is characterized in that a single set of complementary hooks is connected by means of a downward hanging pulley cord, while the uppermost pulley element with its uppermost roller is suspended in the loop thus formed. The end of a second pulley cord is attached to one of the hooks, which hangs lower than the top pulley element and is knocked with the other end around the top pulley of this second pulley, then back up on the bottom pulley of the uppermost pulley element runs and is connected backwards deeper than that roll with a fixed or adjustable grille.

On the bottom roll of this bottom pulley element is a third pulley cord, which is connected at one outer end to one or more warp threads (via harness cords) and at the other end is lower than the bottom pulley of the bottom pulley element with a fixed or adjustable grid is connected.

Another possible embodiment of the pulley suspension according to the invention is characterized in that the uppermost pulley element is suspended directly on one hook on the top roller, while another pulley cord is connected at one end to the other hook, lower than that the bottom pulley of the top pulley element hangs downward and further runs back up on the bottom pulley of the top pulley element to finally be connected at the second end to the top, fixed or adjustable grid, this grid being lower than the one mentioned , bottom pulley is.

The bottom pulley element with its uppermost pulley pulley then hangs in the loop hanging downwards, which is formed by this pulley cord. A pulley cord that runs on the bottom pulley of the bottom pulley element is then wider than in the first embodiment connected on the one hand to the warp threads and on the other hand to a fixed or adjustable grid.

Further features, advantages and possible embodiments of the block and tackle suspension according to the invention are made clear with the aid of the detailed description which follows, but the invention is not restricted to these two possible embodiments.

This description is illustrated by the figures attached here, wherein
3 schematically shows a side view of the first possible embodiment of the pulley suspension according to the invention - in combination with a set of complementary hooks,
FIG. 4 schematically shows a side view of the second possible embodiment of the pulley suspension according to the invention - in combination with a set of complementary hooks,
FIGS. 5a to 5p show a number of possible positions of the hooks and the adjustable grids on the pulley suspension according to the invention in order to obtain the three possible positions of the warp threads associated therewith,
FIG. 6 schematically shows a rod fabric,
FIGS. 7a and 7b show the mode of operation of the jacquard machine - if the hook is selected above - in order to realize the binding of FIG. 6 while indicating the various options for the first and second shot,
FIGS. 8a and 8b illustrate the mode of operation of the jacquard machine, if the hook is selected below, in order to realize the binding of FIG. 6 while indicating the various options for the first and second weft,
FIGS. 9a and 9b show the mode of operation of the jacquard machine, if the hook is selected above, in order to realize the binding of FIG. 1 while indicating the various options for the two groups of pile warp threads in the first and second weft,
Figure 10 shows a side view of the two embodiments of the pulley suspension according to the invention for a set of complementary hooks and
Figure 11 shows a perspective drawing of the arrangement and a portion of the pulley suspension for three sets of complementary hooks according to the first embodiment of the invention.

The pulley suspension according to the invention is characterized in that, in a first embodiment (FIG. 3), the two ends of a pulley cord (13) are attached to the underside of each hook (11) and (12), which form a set of complementary hooks that hangs down as a loop. In that loop, a pulley element (14) is suspended from its upper roller (14 '). One end of a second pulley cord (15) is fastened to the underside of the one hook (11).

This pulley cord (15) hangs down as a loop, and the other end is placed on the lower roller (14 '') of the pulley element (14) and connected to a fixed or adjustable grille (16) which is lower than the pulley roller (14 '') is arranged. A pulley element (17) is now suspended from its upper roller (17 ') in the downward-hanging loop formed by the bottle pull cord (15). On the lower roll (17 '') of the pulley element (17) is a pulley cord (18), one end (20) of which is connected to one or more harness cords, which are successively connected with warp threads, and the other end of which is connected fixed or adjustable grid (19) is connected. This grid (19) is arranged lower than the pulley block (17 ''). The two grids (16) and (19) can be arranged together in a fixed manner, but one (16) or (19) of both can also be adjustable, the movements of those grids then also taking place vertically and together with one of the two complementary ones Knives (11 ') or (12') go along the same route h.

In Figure 4, a second possible embodiment of the pulley suspension according to the invention is shown schematically.

Here the upper pulley element (14) is suspended on the upper roller (14 ') directly with a permanently attached cord on the underside of the one hook (11). On the underside of the other (complementary) hook (12), the end of a pulley cord (21) is attached, which is hung lower than the lower pulley roller (14 '') as a loop and brought back up, over the lower one Pulley (14 '') and then the other end attached to the horizontal, lower grille (16), which can be fixed or movable with one of the knives (11 ') or (12').

In the loop formed by the pulley cord (21), the lower pulley element (17) is now suspended from its upper pulley pulley (17 '). The pulley cord (18) then hangs on the lower pulley block (17 ''), the lower one at one end (20) with one or more Warp threads and is connected at the other end to the lower-lying grid (19) which is arranged fixedly or adjustable with one of the knives (11 ') or (12').

FIGS. 5a to 5p show the different possibilities through which the three possible positions of the warp threads are obtained.

In Figure 5a the upper position of the hook (11) is selected and the grids (16) and (19) are considered to be fixed. When the hook (12) is lifted up by the knife (12 '), the pulley element (14) is brought up a distance h / 2. The upper end of the pulley cord (15) and consequently also point 15a are raised by a distance h.

Due to the fact that the pulley element (14) moves up a distance h / 2, a point (15b) of the pulley cord (15) comes up a distance h.

Since both the point (15a) and the point (15b) are raised by the distance h, the block and tackle element (17) also goes up over the distance h. The end (20) of the pulley cord (18) is consequently raised over a distance of 2 hours. Therefore, the warp threads move from their original "down" position to the "up" position.

In Figure 5b the case is considered that no hook was selected and the hook (12) is in its upper position and the hook (11) in its lower position. The block and tackle element (14) remains hanging in its lower position, since the movements of the two hooks (11) and (12) compensate each other.

The point (15b) on the pulley cord (15) is consequently also in its lowest position. The upper end of the pulley cord (15) together with the hook (11) is in its lowest position, as a result of which the point (15a) is in its low position. As a result, the pulley element (17) and also the end (20) of the pulley cord (18) hang in the low position. The warp threads connected to it are in the "down" position.

The hook (12) is selected in FIG. 5c, while the knife (12 ') is at the bottom and the knife (11') is at the top. The situation for the pulley suspension is identical to that of FIG. 5a.

Figure 5d shows the circumstances when not a single hook was selected and the hook (12) is in its lower position and the hook (11) is in its upper position. The block and tackle element (14) is in its low position, and consequently the point (15b) is in its low position. As a result of the stroke of the hook (11), the point (15a) comes up a distance h, and the pulley element (17) comes to hang higher at a distance of h / 2. This results in a stroke of the end (20) of the pulley cord (18) over a distance h. The warp threads are now in the position: "middle".

Now you can see the positions of the hooks already considered for the case in which the upper grille (16) together with the knife (11 ') is raised by a height h, while the lower grille (19) remains stationary.

For the cases shown in FIGS. 5a and 5b, nothing changes because the knife (11 ') is there in the lower position.

In the cases shown in FIGS. 5c and 5d, the only difference obtained by the stroke of the grating (16) is that the point (15b) is a distance h lower, as a result of which the pulley element (17) is a distance h / 2 comes to hang lower. The effect of raising the grille (16) by a distance h is thus that the end (20) is lowered by a distance h, compared to the same choice of hook without raising the grille (16).

In Figures 5e and 5f, the position "center" and the position "down" are obtained for the position of the warp threads.

In Figures 5g and 5h the effect is considered when the lower grid (19) is raised together with the knife (11 ') by a distance h. It is clear that this causes the end (20) to lie a distance h lower than in the case of an identical hook selection without raising the grille (19). As a result, the "middle" or "down" position is obtained for the warp threads.

If the hooks are not selected, the situation of FIG. 5b and then that of FIG. 5d is only obtained with two successive shots. For the warp threads one obtains the position "down" (lifting the hook (12)) and the position "middle" (lifting the hook (11)).

(With a choice of the hooks in the upper position) it can be said with regard to the warp threads that without selecting a hook, a "middle" position is achieved when the hook (11) is raised and a "down" position when the hook (12) is raised , while the raising of each grating (16) and (19) entails a lowering by a distance h. Selecting a hook in the upper position takes you to the "up" position.

When selecting the hooks in the lowest position, there are also three possible positions for the warp threads (bottom, middle and top). In the Figures 5i to 5l, both grids (16) and (19) are always considered as fixed. This fixed position is higher by the distance h than in the election above; Figures 5a to 5d.

If the hook has not been selected, the highest position is reached when the hook (11) is raised (FIG. 51), which becomes the "up" position for the warp threads. If the hook (12) is on the other hand, the "center" position is maintained.

The lifting of the hook (11) has the result that a lifting over a distance of 2 hours is obtained for the end (20) of the pulley cord (18). The lifting of the hook (12) alone leads to a lifting over a distance h. The lower position of the warp threads, ie the "down" position, is reached when one of the hooks is selected in the lower position. If the other hook is then also brought down, the two hooks are at the bottom. The block and tackle element (14) and both point (15a) and point (15b) assume the lower position. This also brings the pulley element (17) into its lower position, which ultimately leads to the lowest possible position of the end (20) of the pulley cord.

The effect of lifting a grid (16) or (19) over a distance h is of course also that the end (20) of the pulley cord is lowered in length h. Conversely, lowering the grating (16) or (19) by a distance h results in the increase in the end of the block and tackle cord by the distance h (FIGS. 5m to 5p). In addition, the grids - one of them or both - can also be provided here so that they move with one of the knives (11 ') or (12').

To illustrate the possible uses of the device according to the invention, consider a rod fabric that is bound through 2 wefts (see the schematic view in FIG. 6).

With every shot you get a hit I. With every second shot (i.e. on the 2nd, 4th, ...) you get a rod R. The pile warp threads can act as figure-forming pile warp threads by being above every second shot the rod R is located. This location is called above (B).

The lower layer (O) is taken up by a pile warp thread, which is located under lay I. The position in the middle (M) is above stroke I, but below rod R.

bei jedem ersten Schuß:

P1 "unten"; P2 und P3 "Mitte",

bei jedem zweiten Schuß:

P1 "oben"; P2 und P3 "unten".

The pile warp threads P1, P2 and P3 can take the following position with each weft:

with every first shot:

P1 "below"; P2 and P3 "middle",

every other shot:

P1 "top"; P2 and P3 "below".

The jacquard machine, which can meet these requirements, consists of a cutting grid with knives (11 ') and a cutting grid with knives (12'), which move up and down in opposite phase to each other. The hooks (11) and (12) can be selected in the top and bottom position. If that choice is made in the up position, then the grille (16) is allowed to move with the cutter grate (11 ') while the grille (19) remains fixed.

With every first shot, the warp threads must either move to the "center" or "down" position. The state of the device according to the invention is shown in Figure 7a for those two possibilities in the first shot, in which the knife (11 ') is at the top and the knife (12') at the bottom.

When the hook (12) is selected, the hooks (11) and (12), which are raised over the distance h, are in the "up" position at that time. The block and tackle element (14) is brought up by a length h / 2, as a result of which the point (15b) of the block and tackle cord (15) reaches a position higher by the length h. The fact that the grid (16) is also increased by a length h means that the point (15b) is raised. As a result of the lifting of the hook (11), the point (15a) is raised by a distance h. The block and tackle element (17) is pulled up over the distance h / 2. Since the grid (19) is fixed, a stroke h of the end (20) of the pulley cord (18) is finally obtained. The warp threads reach the "center" position.

If the hook (12) has not been selected, then the hook (11) is in the "up" position, while the hook (12) is in the "down" position.

The point (15a) experiences a stroke over the distance h. The pulley element (14) assumes its lower position, whereby the point (15b) of the pulley cord (15) is not raised. Because the grid (16) - together with the knife (11 ') - is raised by a distance h, the resulting movement of the point (15b) is a reduction by a distance h.

The point (15a) rises by a length h, while the point (15b) decreases by a length h, so that the block and tackle element (17) is not raised and is in its lowest possible position. The grid (19) is fixed so that the end (20) of the pulley cord (18) also hangs in its lowest position. As a result, the warp threads are in the "down" position.

Because the hook (12) is selected before the first shot or is not selected, there is a choice between the "center" and "bottom" positions for the warp threads.

In the second shot, the knife (12 ') is in the upper position, while the knife (11') is in the lower position. When the hook (11) is selected, the two hooks (11) and (12) are in the position with the stroke h, as a result of which they pull the pulley element (14) up a distance h / 2 higher than their lowest position. The point (15a) has the stroke h, while the point (15b) also goes up a distance h.

The pulley element (17) is raised by the length h, whereby the end of the pulley cord (18) - in connection with the fixed grating (19) - experiences a stroke over a distance of 2 hours. The warp threads will move to the "up" position.

The grille (16) remains in its lower position since the knife (11 ') to which it is connected is located at the bottom.

If the hook (11) is not selected, then the hook (11) is in its lower position and the hook (12) is brought into its upper position.

The pulley element (14) is in its lower position with the result that the point (15b) is not raised and is in its lower position. The point (15a) also assumes its lower position - the hook (11) being at the bottom - as a result of which the pulley element (17) is in its lowest possible position. The end (20) of the pulley cord (18) that is firmly connected to the grid (19), is consequently in the lowest possible position. The warp threads are brought into the "down" position.

Because the hook (11) is selected or not selected, the second weft consequently gives the choice to bring the warp threads into the "up" or "down" position.

The options that are shown for the first and the second weft in FIGS. 7a and 7b, therefore, correspond completely with the necessary positions of the warp threads for weaving the fabric of FIG. 6, namely for the pile warp thread P1 (positions "bottom" and "top") and for the pile warp threads P2 and P3 (positions "center" and "bottom").

In the event that the hooks (11) and (12) are selected in the lower position, the two grids (16) and (19) are fixed. The necessary positions of the device according to the invention are in the first or second weft during the weaving of the fabric of Figure 6 in the Figures 8a and 8b reproduced. The first shot takes place when the knife (12 ') is in its upper position and the knife (11') is in its lower position. If the hook (11 ') was not selected, the pulley element (14) is subject to a stroke of h / 2 above its lowest possible position - this happens when the two hooks (11) and (12) are at the bottom - . The point (15a) is not subjected to an increase, while the point (15b) is subject to a stroke over a length h.

Consequently, the pulley element (17) reaches a height greater by h / 2 in order to hang there, as a result of which the end (20) of the pulley cord (18) is raised by a height h above its lowest possible position. The warp threads reach the "center" position.

The other necessary position of the warp threads is obtained for the first shot when the hook (12) is selected in its lower position. In the first shot, the two hooks are consequently in their low position, as a result of which the pulley element (14) and thus also the point (15b) reach their low position. The point (15a) is also in the lower position, as a result of which the pulley element (17) also hangs in its lowest position. As a result, the end (20) of the pulley cord (18) hangs in the lowest position. The warp threads reach the lowest position, namely the "down" position.

For the first weft, the necessary positions "center" and "bottom" of the warp threads are obtained in that the hook (11) is not selected or probably selected in its lower position.

For the second shot, the necessary positions "up" and "down" are achieved in that the hook (11) is not selected or is selected in its lower position. If the hook (11) is not selected, it is at the top, and on the second shot the hook (12) is in its lower position. The block and tackle element (14) is raised by a length h / 2 above its low position, which leads to an elevation of point (15b) by the height h. The point (15a) is also raised over a length h, so that the pulley element (17) rises by the height h to hang there. As a result, the end (20) of the pulley cord (18) is conveyed upward by a distance of 2 hours. The warp threads thus reach the "up" position.

If the hook (11) is selected well, the situation in which the two hooks (11) and (12) are in their low position is achieved in the second shot. - For the device according to the invention - this situation is the same as that with a choice of the hook (12) in its lower position was obtained, which was described in detail above. Here, the "down" position of the warp threads is also reached.

With regard to another possible application of the device according to the invention, reference is made to FIG. 1, which schematically shows a double-piece pile fabric woven with a pair of bobbins with the 2-weft V-weave.

For each first shot, part of the pile warp threads (P1, P2, P3) must be able to choose between the positions "bottom" or "middle", while for another part of the pile warp threads (P4, P5) there must be a choice between the positions " below "and" above "must be present.

With this weave, the choice between the positions "bottom" and "top" must be given with every second weft for the first group of pile warp threads, while for the second group of pile warp threads (P4, P5) the choice between the positions "top" and "middle" must be given "must exist.

In the first shot, the necessary choices in the device according to the invention are shown in Figure 9a; with regard to the second shot, reference is made to FIG. 9b.

For the first group of pile warp threads, the grid (16) - together with the knife (11 ') - is arranged to be movable, and the grid (19) is fixed, while for the second group of pile warp threads the two grids are fixed.

The arrangement of the first group of pile warp threads is to the left of the arrangement of the second group of pile warp threads in each figure.

In the first shot, there are two choices for the first group of pile warp threads (namely "bottom" and "middle") by selecting or not selecting the hook (12) in its upper position. In this regard, reference is made to the description associated with FIG. 7a.

In the second group of pile warp threads, the pulley cord (13) is attached to the hook (11) and the pulley cord (15) to the hook (12), vice versa to all previous cases. The two grids (16) and (19) are fixed. This situation is identical to that of Figure 7b; as a result of the exchange, these positions ("below" and "above") are now obtained on the first shot.

For the second group of pile warp threads, the necessary options are obtained in that the hook (12) is selected or not selected in its upper position, while the grids (16) and (19) must be arranged in a fixed manner.

Consequently, the jacquard machine must consist of two sections: namely a section for the first group of pile warp threads with the movable one Grid (16) and a section for the second group of pile warp threads with fixed grids (16) and (19) and with an exchanged pulley suspension.

On the second shot the choice between the positions "bottom" and "top" must be made for the first group of pile warp threads. The positions in the device according to the invention which meet these correspond to those of Figure 7b. Because the hook (11) is selected or not selected in its upper position, the "up" or "down" position is achieved.

On the second shot, the second group of pile warp threads has to choose between the "top" and "middle" positions.

The "up" position is obtained in the same way as for the first group of pile warp threads in the second weft: namely by selecting the hook (11) in its upper position. The condition of the device is identical since the exchange of the pulley suspension does not matter when the two hooks (11) and (12) are in the "up" position and when the knife (11 ') is down; (the movable grid (16) is equal to the fixed grid (16)).

The "center" position is obtained by not selecting the hook (11) on the second shot. The block and tackle element (14) and consequently also the point (15b) are in the lowest possible position. The point (15a) is raised from the hook (12) over the distance h. The pulley element (17) comes to hang a distance h / 2 higher, whereby the end (20) of the pulley cord (18) hangs at a height h above its lowest position. The warp threads are thus brought into their "center" position.

In order to clarify the practical implementation of the pulley suspension according to the invention in a preferred embodiment, reference is made to FIG. 10, which shows a side view of a section of the device which interacts with a set of complementary hooks. The block and tackle suspension shown in FIG. 10 is connected to each set of complementary hooks of the jacquard machine. FIG. 11 shows a perspective view of a section of the device which works together with three sets of complementary hooks.

Each hook (11) and (12) consists of an elongated tab, on one side of which a projection is provided. Under each row of hooks, more precisely, under the protrusion of those hooks there is a knife (11 ') or (12'); the two knives lead one against the other Up and down movement from which you can take the hooks (11) and (12) upwards. For this purpose, the shape and size of the projection on each hook (11) and (12) are provided such that during the upward movement of those hooks (11) or (12) on the upper edge of the knife (11 ') or (12' underneath. ) can rest.

On the lower side of each hook (11) and (12) there is an opening for fastening the pulley cords (13) and (15).

On the underside of all hooks (11) belonging to one and the same row, the ends of two pulley cords are fastened, namely the end of the pulley cord (13) and the end of the pulley cord (15), etc. The pulley cord (13) hangs down and runs open along the underside of the upper pulley block (14 ') of the pulley element (14) and then back up, where the second end of this pulley cord (13) with the underside of the hook (12) - the complementary hook belonging to another row - connected is.

The pulley cord (15) hangs down further than the pulley cord (13) and runs over the underside of the upper pulley block (17 ') of the pulley element (17) and then back upwards, where it passes over the top of the lower pulley block (14 '') of the pulley element (14) is guided and continues to run back down, where the end is connected to the grid (16). The grid (16) can either be fixed or movable, whereby it can follow the movements of the knife (11 ') or (12').

Each pulley element (14) and (17) consists of an upper and lower pulley roller (14 '), (17') and (14 ''), (17 ''), which are rotatably arranged one above the other on parallel axes. Both axes are also by known tools - z. B. mechanically connected by two side plates parallel to the two side surfaces of the pulley blocks.

Consequently, the two pulley elements (14) and (17) hang with their lower pulley pulley in the loop formed by the downward hanging pulley cords (13) and (15), over the pulley pulleys (14 ') and (17 ') to run.

Another pulley cord (18) runs on the top of the lower pulley block (17 '') of the pulley element (17), which has one end at the bottom with the grid (19) and at the other end (20) lower with one or several harness cords are connected in connection with the warp threads. The grid (19), like the grid (16), can either be arranged in a fixed manner or be movable, following the movements of the knife (11 ') or (12'). FIG. 11 shows individual slats of the grids (16) and (19) connected to the pulley cords (15) and (18).

The advantage of the invention lies in the fact that only one set of complementary hooks (11) and (12) is required per pole point to enable three different positions of the warp threads. To provide for this possibility, two sets of complementary hooks per pole point have to be made available to date, which means that more space is required in the jacquard machine.

Claims (8)

Pulley suspension for forming the compartment with the warp threads of a jacquard machine, in which the pulley elements are connected to the hooks with the aid of pulley cords, one end of a pulley cord is connected with one or more warp threads and, possibly as a result of the choice of the hooks Combination with influencing an upward and downward movable suspension point of a pulley cord, at least two wefts three possible positions of the warp threads can be selected, characterized in that the pulley suspension interacts with a set of two complementary hooks (11) and (12) per pole point and is composed of two superimposed pulley elements (14) and (17) - each consisting of two rotatable rollers (14 '), (14'') and (17'), (17 '') connected to each other - the under each set of complementary hooks with pulley cords (13) and (15) are hung on those hooks, each the end of the pulley cord (13) is attached to one of the hooks (11) and (12), while its downward hanging portion runs over the upper roller (14 ') of the pulley element (14) - which is suspended in this way - , on which a hook (11) a second pulley cord (15) is attached, which hangs lower than the pulley element (14) down, over the upper roller (17 ') of the pulley element (17) - the is suspended in that way - and runs back up, is passed over the lower roller (14 '') of the pulley element (14) and is connected back at its end downwards to a lower, fixed point of the jacquard machine, and wherein A pulley cord (18) is guided over the lower roller (17 '') of the pulley element (17) and is connected at one end to a lower fixed point of the jacquard machine and at the other end (20) via the harness cords one or more warp threads v is connected. Pulley suspension according to Claim 1, characterized in that the pulley cord (15) is connected at the end which is not connected to a hook (11) to a grid (16) which is in phase with the one knife (11 ' ) or (12 ') over one and the same height h as the lifting of those knives can be moved up and down. Pulley suspension according to claims 1 and 2, characterized in that a pulley cord (18) at the end which is not connected to the warp threads is connected to a grid (19) which is in phase with the one knife (11 ') or (12 ') can be moved up and down over one and the same height h as the raising of those knives. Pulley suspension for forming a compartment with the warp threads of a jacquard machine, in which the pulley elements are connected on the one hand with the aid of pulley cords to the hooks and the one end of a pulley cord is connected with one or more warp threads, which may result in the hooks being able to be selected in combination with the control of an up and down movable suspension point three possible positions of the warp threads can be selected at least 2 wefts each, characterized in that the pulley suspension interacts with a set of two complementary hooks (11) and (12) per pole point and is composed of two superimposed pulley elements (14) and (17) - each of which consists of two rotatable rollers (14 '), (14'') and (17'), (17 '') connected to each other - which are hung under each set of complementary hooks on those hooks with cords (21) and (22), the pulley element ment (14) with a cord (22) attached to it is hung directly on the one hook (11) and one end of the pulley cord (21) is attached to the other hook (12), while the tackle cord (21) is lower than the pulley element (14) hangs down over the upper roller (17 ') of the pulley element (17) - which is suspended in this way - and runs back upwards, over the lower roller (14'') of the pulley -Elementes (14) and is connected back at its end downward with a lower fixed point of the jacquard machine, and wherein a pulley cord (18) is guided over the lower roller (17 '') of the pulley element (17) one end is connected to a lower, fixed point of the jacquard machine and at the other end (20) is connected to one or more warp threads via harness cords. Pulley suspension according to claim 4, characterized in that the end of the pulley cord (21) which is not connected to the hook (12) is connected to a grid (16) which is in phase with the one knife (11 ') or (12 ') on the same distance h as the lifting of those knives can be moved up and down. Pulley suspension according to claims 5 and 6, characterized in that the end of the pulley cord (18), which is not connected to the warp threads, is connected to a grid (19) which is in phase with the one knife (11 ') or (12 ') over one and the same distance h as the lifting of those knives can be moved up and down. Jacquard machine provided with a pulley suspension according to one or more of claims 1 to 3. Jacquard machine provided with a pulley suspension according to one or more of claims 4 to 6.

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