EP0570947B1 - Tackle mechanism for a jacquard machine - Google Patents

Description

The invention explained below relates to a pulley device for a jacquard machine.

It is known that a jacquard machine, in cooperation with a double-piece weaving machine, ensures that the various pile warp threads are brought into the correct position before each weft, so that the fabric - depending on the desired weave with the desired figures - can be woven.

Such jacquard machines contain at least two rows of hooks and two knives which move up and down continuously in opposite phase with respect to each row and which can take the hooks of that row, each hook optionally in its upper or lower position (depending on the design of the jacquard machine ) can be held by an electoral mechanism for the duration of one or more cycles through the knives.

Two such rows of hooks are referred to as complementary rows of hooks, and two just opposite hooks belonging to one of two complementary rows of hooks are named as a complementary pair of hooks. The hooks of one or two complementary pairs of hooks can, due to their cooperation, which is imposed on them by a mutual connection, pulley blocks, pulley cords deflected on these pulleys and one or more warp threads connected to a pulley cord (via a harness cord) due to the different positions of the cooperating hooks bring a different height. In other words, by selecting each hook which interacts with the same pulley device, the warp threads connected to a pulley cord of this pulley device can be brought into the desired position before each shot in order to realize a double piece fabric. This principle is known and is illustrated using the example below, reference being made to the attached FIG. 1.

For weaving certain weaves in double-piece fabrics, it is necessary that the pile warp threads for two successive shots can be placed in three possible positions with respect to the weft threads in the upper and lower fabrics, namely above these weft threads, below these weft threads and between these weft threads. One speaks of the positions: top, bottom and in the middle. In order to implement these three options, three pulley elements (1), (2) and (3) are used (see Figure 1). Each pulley element contains two rotatable rollers (1 ', 1''),(2', 2 ''), (3 ', 3'') arranged one above the other.

The two hooks of two complementary pairs of hooks (9), (10) and (9 '), (10') are connected by a downward hanging pulley cord (7) and (8), while the downward hanging section under the upper roller ( 1 ') of the pulley element (1) or under the upper roller (2') of the pulley element (2) is deflected.

A pulley cord (6) is connected at one end to a fixed point - below the rollers (1 '') and (2 '') - and guided over the roller (1 '') of the pulley element (1) deflected a downward hanging section under the upper roller (3 ') of the pulley element (3), finally passed over the roller (2' ') of the pulley element (2) and with the other end at a lower, fixed point fixed.

A pulley cord (4) runs over the lower roller (3 '') of the lower pulley element (3), is connected at one end to the harness cord with one or more pile warp threads and at the other end to a fixed or movable one (adjustable) point or grid (5) connected.

If none of the four hooks is selected, then on the one hand the hook (9) moves up and down in opposite phase to the hook (10) and on the other hand the hook (9 ') moves in opposite phase to the hook (10'). As a result, the pulley elements (1) and (2) remain at the same height. There is no lifting and the pile warp threads remain in the "down" position.

If a hook, e.g. B. the hook (9) is selected in its upper position, then after lifting the hook (10) with the help of the knife (by a height h) the pulley element (1) is raised to a height h / 2. The block and tackle element (2) is not raised because neither the hook (9 ') nor the hook (10') is selected. The lifting of the block and tackle element (1) by a height h / 2 results in the same lifting of the block and tackle element (3) (by a height h / 2), whereby the pile warp threads are raised by a height h. They are brought into the "in the middle" position. When the hook (10) is in its lowest position, the warp threads are in the "down" position.

If now a hook z. B. (9) and (9 ') of each complementary hook pair is selected in its upper position, then when lifting the complementary hooks (10) and (10') both pulley elements (1) and (2) by a height h / 2 raised. This results in a lifting of the block and tackle element (3) by a height h, whereby the pile warp threads are raised by a height 2h become. They are brought into the "up" position. When the hooks (10), (10 ') are brought into their lower position, the pile warp threads are in the''down''position.

Due to the different choices of the hooks and the fact that the grid (5) may be brought to another level together with a hook, the pile warp threads can be brought into three possible positions in two successive shots.

The great disadvantage of this known pulley device lies in the fact that two complementary pairs of hooks (9, 10), (9 ', 10') are required, which results in a large, expensive machine.

This disadvantage has been overcome by pulley devices described in Belgian patent BE-A-1 004 347.

It relates to a block and tackle device for a jacquard machine, in which only a complementary pair of hooks has to be connected and by selecting these hooks it is possible to bring the warp threads per repeat from 2 wefts into three possible positions.

In the above patent specification two possible embodiments are described, which are shown in the accompanying FIG. 2. In the first embodiment, one end of a downward hanging pulley cord (13) is attached to two complementary hooks (11) and (12). This pulley cord (13) is deflected under the upper roller (14 ') of a pulley element (14). On one of the two hooks (11), (12) the end of a second pulley cord (15) is fastened, which hangs lower than the pulley element (14) below the upper roller (17 ') of a pulley element (17) is deflected, then is led back upwards, runs over the lower roller (14 '') of the block and tackle element (14) and is connected deeper than that roller (14 '') with a fixed or adjustable grille (16). A third pulley cord (18) lies on the lower roll (17 '') of this pulley element (17). one end of which is connected lower (via harness cords) to one or more pile warp threads, and the other end of which is connected lower than the lower roller (17 '') of the block and tackle element (17) to a fixed or adjustable grid (19).

In the second embodiment, the upper pulley element (14) is attached to one of the two complementary hooks (11) and (12), while another pulley cord (21 ') is connected at one end to the other hook (12), deeper than the pulley element (14) under the upper one Roll (17 ') of the pulley element (17) is deflected, runs back upwards, placed over the lower roller (14'') of the pulley element (14) and with the other end lower and back on a fixed or adjustable Grid (16) is connected. A pulley cord (18) runs over the lower roller (17 '') of the pulley element (17), one end of which is connected to the pile warp threads - lower - by harness cords, and the other end - also at a lower level - to one fixed or adjustable grid (19) is connected.

If the hook (11) - or (12) - is selected in its upper position and the grids (16), (19) are assumed to be fixed, then the warp threads - after lifting the other hook (12) or (11 ) - raised by a height of 2h and move from the "down" position to the "up" position.

If not a single hook is selected, the warp threads are raised by the height h as a result of the lifting of the hook (11) and brought from the position "down" to the position "in the middle".

If the device is now provided with aids through which one of the grids (e.g. the grille (16)) is raised by a knife (12 ') together with the hook (12) by a height h, the warp threads arrive - after lifting the hook (12) - a distance h lower than in the case of a fixed grille.

For a more detailed description of all the possibilities of this known pulley device, reference is made to the Belgian patent BE-A-1 004 347.

The pulley device outlined above is a solution to achieve three positions of the pile warp threads with only two complementary hooks, two pulley elements and two grids.

A disadvantage of this solution, however, is that two pulley elements and two grids (16), (19) are required, as a result of which the entire device takes up a lot of space in height and the jacquard machines provided with this pulley device must be set up quite high to obtain acceptable angles of incidence of the harness cords on the choir board.

The aim of this invention is a pulley device to be provided for a jacquard machine, the height of which is more compact.

The object of the invention is specified in claim 1 and relates to a pulley device in which a pulley element and a roller element fastened to a grid are provided for each complementary pair of hooks of a jacquard machine. Each pulley element contains two rotatable rollers which are arranged on a common construction and over which the pulley cords in question can be guided.

Each roller element is provided with a rotatable roller over which the pulley cord can be passed.

This device is arranged as follows. The end of a pulley cord is attached to one hook of a complementary pair of hooks. This pulley cord is deflected under an upper roller of the pulley element and attached at the other end to the other hook of the complementary pair of hooks. In this way, the pulley element is suspended from the hook with the aid of the pulley cord.

The roller element is fixed under the pulley element. A second pulley cord is attached at one end to one of the above-mentioned hooks (next to the first pulley cord), runs downwards and is deflected under the rotatable roller of the roller element, runs back upwards, where it runs over the lower roller of the pulley element, to extend further back down. The harness cord is attached to the hanging end of this pulley cord.

With the block and tackle device according to the invention, three possible positions of the warp threads are obtained via the different options for the hooks, no single hook or one or the other hook in its upper or lower position (depending on the embodiment of the device) being selected and the other hook moves up and down with a knife.

When choosing the hook to which one pulley cord is attached in its upper position, the warp threads carried along by the harness cord reach the positions below and above at the moment when the other (complementary) hook from the knife goes into its lower position or in the upper position.

When choosing the hook on which two pulley cords are attached, the warp threads carried by the harness cord reach the middle and top positions at the moment when the other (complementary) hook from the knife reaches its lower and upper positions brought.

If not a single hook is selected, the warp threads carried by the harness cord will move to the bottom and center position at the moment the hook to which one pulley cord is attached or the hook to which two pulley cords are attached , is brought into the uppermost position by the knife. The device can thus effect three different positions of the warp threads in two successive knife cycles, only one complementary pair of hooks being required per harness cord.

An advantage of this invention lies in the fact that - by using only one pulley element and one fixed roller element per pair of hooks - the height is much more compact than the known devices of this type.

Because only one pulley element and one roller element are required per pair of hooks, there is an additional advantage of the invention in the limited number of individual parts and in the simplicity and the low cost of the device.

When interacting with all (or part of) complementary hook pairs of a jacquard machine, a device according to the invention can always be provided. These pairs of hooks can be arranged in one or more complementary double rows. The various pulley elements are suspended next to one another under their respective pairs of hooks, while the associated roller elements are fastened under each pulley element. Such an arrangement of several devices according to the invention on the same jacquard machine is another object of the invention.

In a preferred embodiment of the arrangement according to the invention, the roller elements belonging to the same complementary pair of hook rows are fastened to a profile body which extends parallel to these rows and mainly horizontally under these rows of hooks. Several such adjacent profiles, to which roller elements are attached, can be connected to one another and form a grid. Such a profile or a plurality of profiles can also be arranged — either not connected to one another — either in a fixed or movable (= adjustable) manner.

In another embodiment of the device according to the invention, at least one roller of the pulley element or the roller of the roller element is arranged or designed in such a way that - in a vertical run, the pulley cord on this roller (or on these rollers) is deflected, accordingly run back vertically - the two vertical pulley sections are arranged in different vertical surfaces lying perpendicular to the knife direction, while the outside of the pulley element and / or roller element is perpendicular to the knife direction.

Preferably, all the rollers (both the pulley element and the roller element) are arranged or designed in this way with your aim, on the one hand to prevent vertical pulley cord sections running against one another from rubbing against one another, and on the other to prevent the Hang pulley elements askew. So far, these problems have been avoided by using reels with different maximum reel centerlines.

The advantage of this embodiment lies in the fact that rolls with the same roll center line can be used anywhere.

In a preferred embodiment of this device according to the invention, the above-mentioned feature is obtained by mounting a roller on an obliquely arranged axis. An oblique arrangement is understood here to mean that this axis does not lie in a vertical surface running in the knife direction, while the outside of the flanks of the pulley element and / or roller element is perpendicular to the knife direction.

Further features and advantages of the pulley device and the arrangement of several pulley devices on a jacquard machine according to the invention are made clear on the basis of a detailed description of a preferred embodiment, without the invention being restricted thereby to this possible embodiment.

• Dabei ist Figur 1 eine schematische Seitenansicht einer bekannten Flaschenzug-Vorrichtung für eine Jacquardmaschine, die drei Flaschenzug-Elemente und zwei komplementäre Hakenpaare benutzt, und
• Figur 2 zeigt eine schematische Seitenansicht zweier Ausführungsformen einer bekannten Flaschenzug-Vorrichtung für eine Jacquardmaschine, die zwei Flaschenzug-Elemente und ein komplementäres Hakenpaar benutzen.
  Die weiteren, beigefügten Figuren verdeutlichen zum anderen die nun folgende Beschreibung einer bevorzugten Ausführungsform der Erfindung:
• Dabei zeigt Figur 3 eine perspektivische Ansicht der Anordnung von sechs Flaschenzug-Vorrichtungen gemäß der Erfindung in Zusammenarbeit mit sechs komplementären Rollenpaaren, die über drei paarweise angeordnete, komplementäre Hakenreihen verteilt sind,
• Figur 4 zeigt eine Ansicht der Flaschenzug-Vorrichtungen gemäß der Erfindung aus Figur 3 von oben,
• Figur 5 zeigt eine perspektivische Ansicht eines auseinandergenommenen Rollenelementes einer Flaschenzug-Vorrichtung gemäß der Erfindung und
• Figur 6 eine andere perspektivische Ansicht des auseinandergenommenen Rollenelementes aus Figur 5.

The attached figures illustrate the above description of the prior art:

• 1 is a schematic side view of a known pulley device for a jacquard machine, which uses three pulley elements and two complementary pairs of hooks, and
• FIG. 2 shows a schematic side view of two embodiments of a known pulley device for a jacquard machine, which use two pulley elements and a complementary pair of hooks.
  The other attached figures also clarify the following description of a preferred embodiment of the invention:
• 3 shows a perspective view of the arrangement of six pulley devices according to the invention in cooperation with six complementary pairs of rollers which are distributed over three complementary rows of hooks arranged in pairs,
• FIG. 4 shows a top view of the pulley devices according to the invention from FIG. 3,
• FIG. 5 shows a perspective view of a disassembled roller element of a pulley device according to the invention and
• FIG. 6 shows another perspective view of the disassembled roller element from FIG. 5.

A preferred embodiment of a pulley device according to the invention comprises a pulley element (21) which is composed of two elongated side pieces (22), (23) which are fastened to one another parallel to one another and just opposite one another at a certain distance. In the vicinity of the ends of these side pieces (22), (23) axes (24) and (25) run between these side pieces (22), (23), that is from one side piece (22) to the other side piece (23). The side pieces (22) and (23) are attached to each other with the help of these axes.

Rotatable rollers (26) and (27) are placed on the axes (24), (25). The axes (24) and (25) are arranged parallel to one another and are not perpendicular with respect to the outside of the side pieces (22) and (23).

The angles (α) between the center lines of the axes (24) and (25) on the one hand and the vertical on the outside of one of the side pieces (22) or (23) - at the height of the axes (24) and (25) - on the other hand are consequently identical.

The pulley cord (28) is attached at one end to the hook (29) - i.e. at a point that lies on the vertical axis of symmetry of this hook (29) - runs vertically downwards, is deflected under the roller (26) and runs vertically back up, where its other end is attached to the hook (30) - that is, at a point that is not on the vertical axis of symmetry of this hook (30). The point of attachment of the tackle cord (28) to the hook (30) is not in the middle of this hook, because a second tackle cord must be attached to the same hook (30) (see further).

The size of the angle (α) between the center line of the axis (24) of the roller (26) and the vertical on the outside of the side piece (22) or (23) is chosen such that the pulley cord (28) from the one attachment point in a vertical surface perpendicular to the direction of the knife - which contains the vertical lines of symmetry of the hooks (29) and (30) - can run downwards, is then deflected under the roller (26) and then in another vertical surface which is perpendicular to the knife direction, can run up to the other attachment point, while the outer walls of the side pieces (22) and (23) are within surfaces perpendicular to the knife direction. The roller element (31) has a bar-shaped base part (32) which is provided with a T-shaped recess (33) coming out on the lower wall, so that the roller element (31) has a T-shaped recess (33) in the Matching, protruding edge (34) of a profile body (35) can be pushed away to secure this roller element (31) on this profile body. The roller element (31) can only be attached to or detached from this edge by pushing the base part (32) from one end of the edge (34) or pushing it off at one end.

A vertical rib (32 ') is provided vertically on the upper side of the base part (32), on which a bushing (39) extending in the longitudinal direction of the base part (32) is fastened. In this socket (39) an axis (40) projecting on both sides is rotatably arranged.

A side plate (36) or (41) is now attached to both ends of the rotatable axis (40). The two side plates (36), (41) have a lower section (36 ') or (41') of elongated shape, the edges of which are parallel, and run higher in a wider head (36 '') or rounded above . (41 '') off. In the center of the head (36 ''), an axis (37) is fixed to the inside of this side plate (36) on which a rotatable roller (38) is seated.

The head (41 '') of the side plate (41) has on its inside a symmetrical, circular depression (42), in the middle of which an opening (44) is provided. The shape and dimensions of this recess (42) and the opening (44) and their arrangement in the side plate (41) are selected such that when the side plates (36), (41) are joined together, the axis (37) into the opening ( 44) and the roller (38) is partially surrounded by the walls of the recess (42) so that there is sufficient space between the side plates (36) and (41) and around the roller (38) to hold a pulley cord ( 47) from underneath the roller (38) and guide it back upwards, whereby the roller (38) can rotate about its axis (37).

The side plate (41) has on the inside of its lower section (41 ') a U-shaped recess (43), the walls (43') of which run parallel from the underside of this side plate (41) and higher at a bend (43 '') merge. An opening (45) is provided in this recess close to the bend (43 ''). The location, shape and dimensions of the recess (43) and the opening (45) are chosen such that when the side plates (36) and (41) are joined together, the end of the axle (40) can be pushed into the opening (45), the bushing (39) and the top of the rib (32 ') from the walls (43') and the bend (43 '') of the U-shaped recess (43) of the side plate (41) are enclosed.

A recess (46) is provided on the side of the outer wall of the side plate (41) of the roller element (31) and extends over the entire height of the head (41 ''). This recess (46) forms a recess - with a rounded transition between the two walls forming the recess - which runs from the top edge of the head (41 '') to where this head (41 '') enters the elongated section ( 41 ') passes.

The axis (37) is not perpendicular to the side plate (36). Between the center line of the axis (37) and the vertical on the outside of the side plate (36) - at the height of the axis (37) - an angle (β) is formed which corresponds to the angle (α), but in comparison to the angle (α) the angle (β) is formed on the other side of the perpendicular.

The pulley cord (47) is attached to the hook (30) at a point that is not on the vertical line of symmetry, but on the other side of that line of symmetry next to the attachment point of the pulley cord (28). The pulley cord (47) runs vertically downwards and is placed under the roller (38) of the roller element (31). Then the pulley cord (47) is led back vertically upwards, passed over the roller (27) of the pulley element (21) and then runs back vertically downwards.

The angle (β), which the axis of the roller (38) forms with a vertical on the outside of the side plate (36), is chosen such that the pulley cord (47) extends from the point of attachment to the hook (30) (which is is not located on the line of symmetry) in a vertical surface perpendicular to the knife direction, then is guided around the roller (38) and can continue to run upwards in another vertical surface lying perpendicular to the knife direction, this latter surface contains the vertical lines of symmetry of the hooks (29) and (30) and the outer walls of the side plates (36) and (41) of the roller element (31) are located within surfaces perpendicular to the knife direction.

Because the axis of the roller (27) forms an angle (α) with a vertical on the side piece (23), the pulley cord (47) - After its deflection on the roller (27) - from the vertical surface, which contains the lines of symmetry of the hooks (29) and (30), into a parallel, vertical surface, in which the pulley cord (47) descends between the profile bodies ( 35) runs and is connected to the warp threads, the latter, vertical surface also containing the point of attachment of the pulley cord (28) to the hook (30).

As a result, the portion of the pulley cord (47) hanging down from the roller (27) runs parallel at a certain distance from the portion of the pulley cord (47) that extends downward from the point of attachment to the hook (30), wherein the two sections of the pulley cord are on the broad sides of the surface which contains the lines of symmetry of the hooks (29) and (30).

The design of the roller element (31) and in particular of the recess (46) is selected such that the section of the pulley cord (47) which hangs downwards from the roller (27) is level with the roller element (31) in the recess (46) extends downward.

An additional feature of the block and tackle element (21) is that one of the side pieces (23) on the outside of the edge that runs upwards, on which the block and tackle cord (47) is guided downwards, has a recess (48) rounded at the entire height Has walls that the pulley cord (47) can guide.

The two side plates (36), (41) of the roller element (31) are arranged pivotably with respect to the base part (32) on the axis (40). This pivotable fastening prevents a bending moment in the roller element (31) due to the movement of the grating in accordance with an inclined compartment.

In a preferred arrangement of a plurality of devices according to the invention, a grid is provided which consists of a plurality of profile bodies (35) which are arranged in parallel at a fixed distance from one another. This grid is attached in such a way that the profile bodies (35) run parallel to the knives. On the top of each profile body (35) there are two parallel, protruding, T-shaped, profiled edges (34). Several roller elements (31) are fastened next to one another at these edges (34). The location for the arrangement of the profile body (35) and each roller element (31) on the edges (34) of this profile body (35) is selected so that the pulley cords (28), (47) and the pulley element ( 21) and the roller element (31) of a device according to the invention - which are connected to one another by pulley cords are - can extend with vertical pulley cord sections or outer walls, which are located in vertical, perpendicular to the knife direction.

The two rows of pulley devices, which are arranged next to one another and whose roller elements (31) are fastened to different, adjacent walls (34) of the adjacent profile bodies (35), are mounted in such a way that the respective pulley cords (47) are between the same profile bodies (35) run down to the warp threads so that as a result the hooks (30), which interact with two such rows of pulley devices and to which two pulley cords (28), (47) are attached, are located next to one another and that the pulley blocks Elements (21) and roller elements (31) of the different rows are suspended or fastened in such a way that the cutouts (48) and (46) are directed towards one another.

An additional advantage of the invention consists in the displaceable fastening of the roller elements (31) on the profile bodies (35), as a result of which cheaper access to the pulley blocks is obtained in order to possibly replace individual parts of the pulley block device.

The aforementioned angles α and β each lie in the plane of the drawing in FIG. 4, that is to say in a plane perpendicular to the (mostly vertical) longitudinal direction of the block and tackle arrangements shown. The components (39, 40) referred to above as hooks are also called boards. The arrangement according to the invention is characterized, inter alia, by simple construction and simple handling, since not only the two ends of the pulley cord (28) but also the upper cord end of the pulley cord (47) are fastened to the hooks. The lower end of the pulley cord (47) leads directly to the harness cord. Therefore, only the roller elements (31) are to be provided on the grid formed by the profile bodies (35). Any cord ends therefore do not have to be fixed on the grid or on the pulley element (21). It is also advantageous that the hooks can only be controlled in one of their two possible positions, preferably in their upper position, for the momentary shutdown and otherwise participate in the up and down movement of the knives (double-stroke jacquard machine). By stopping at best one of the two complementary hooks can be switched between any two harness line positions (bottom; middle; top) by moving the other hook up and down. Neither of the two hooks must be selected for the transition between the bottom and middle positions; the hook (30) must be selected for the transition between the bottom and the top; the hook (29) must be selected for the transition between the center and the top.

Claims (18)

1. Tackle mechanism connected to two complementary hooks of a Jacquard machine which, during each cycle of movement of the knives, can each either be taken up by one of the two knives of the Jacquard machine, movable upwards and downwards in phase opposition, or be retained in the upper or lower position, whilst those hooks are connected to one or more warp threads via tackle cords deflected on tackle pulleys, so that these warp threads can be brought to three different levels in two successive cycles of movement of the knives in accordance with the selection possibilities of the hooks, characterized in that this tackle mechanism consists of a tackle element (21) with two pulleys (26), (27) and of a pulley element (31) with a pulley (38), in that the pulley element (31) is secured under two complementary hooks (29), (30), in that a tackle cord (28) is connected at one end to one hook (29), runs downwards, is deflected under the upper pulley (26) of the tackle element (21) and runs back upwards, where the other end is connected to the hook (30), in that the tackle element (21) hangs under the hooks (29), (30) and above the pulley element (31), and in that a tackle cord (47) is tied at one end to the hook (30) next to the tackle cord (28), runs downwards, is deflected under the pulley (38) of the pulley element (31), runs back upwards, is deflected via the lower pulley (27) of the tackle element (21) and runs back downwards, where it is connected lower than the pulley element (31) to one or more warp threads.
2. Tackle mechanism according to Claim 1, characterized in that the tackle element (21) and/or pulley element (31) is so designed and/or at least one of their associated pulleys (26), (27) and (38) are so arranged or designed that it is true of at least one pulley (26), (27), (38) that a tackle cord (28), (47) deflected at that pulley runs vertically on the opposite sides of that pulley in different planes perpendicular to the knife direction, whilst the outside of the side pieces of the tackle element (21) and/or of the pulley element (31) is perpendicular to the knife direction.
3. Tackle mechanism according to Claim 1 or 2, characterized in that the design of the tackle element (21) and/or of the pulley element (31) and/or the arrangement or design of at least one of their respective pulleys (26), (27), (38) is selected in such a way that the tackle-cord segments running vertically next to one another on the same side of the pulleys (26), (27), (38) extend in different planes perpendicular to the knife direction, at a sufficient distance from one another to prevent these tackle-cord segments from rubbing against one another while the tackle mechanism is working.
4. Tackle mechanism according to Claim 1, 2 or 3, characterized in that at least one pulley (26), (27) or (38) is seated on an axle (24), (25), (37) which does not lie in a vertical plane extending in the knife direction.
5. Tackle mechanism according to one or more of Claims 1 to 4, characterized in that the tackle element (21) is composed of two elongate side pieces (22), (23) which are fastened to one another parallel and opposite to one another at a specific interspacing, in that axles (24) and (25) run near to the ends of these side pieces (22), (23) from one side piece (22) to the other (23), and in that pulleys (26) and (27) are arranged rotatably on these axles (24), (25).
6. Tackle mechanism according to Claim 5, characterized in that the axles (24) and (25) of the tackle element (21) are arranged parallel to one another and obliquely, so that an angle (α) is formed between the centre line of each axle (24), (25) and the perpendicular to the outside of one of the side pieces (22), (23) level with each centre line within a horizontal plane, in that the size of this angle (α) and the direction of the oblique arrangement of the axles (24), (25) are selected in such a way that, in an arrangement of the tackle element (21), on the one hand the tackle-cord segments of the tackle cords (28), (47), deflected at the pulleys (26), (27), which extend under the hook (29), are located in a vertical plane perpendicular to the knife direction, this plane containing the fastening point of the tackle cord (28) on the hook (29) on the vertical bisecting line of this hook (29), and in that, on the other hand, the tackle-cord segments running under the hook (30) are located in another vertical plane perpendicular to the knife direction, this plane containing the fastening point of the tackle cord (28) on the hook (30) outside the vertical bisecting line of this hook (30).
7. Tackle mechanism according to Claim 6, characterized in that the side pieces (22), (23) of the tackle element (21) are designed in such a way that the insides of the side pieces run parallel to the obliquely arranged pulleys (26), (27), and in that, in an arrangement of this tackle element (21), the outsides of these side pieces (22) and (23) are located within vertical planes perpendicular to the knife direction.
8. Tackle mechanism according to Claim 5, 6 or 7, characterized in that one of the side pieces (23) of the tackle element (21) has over the entire height, on the outer face of the vertically extending edge on which the tackle cord (47) runs downwards, a recess (48), the walls of which can guide the tackle cord (47).
9. Tackle mechanism according to one or more of the preceding claims, characterized in that the pulley element (31) is provided with a base part (32) having fastening aids (33), whilst two upright side plates (36), (41) are fastened pivotably to this base part (32), in that the fastening aids and the pivotable fastening of the side plates (36), (41) are designed in such a way that these side plates (36), (41) are arranged pivotably with respect to a horizontal axle (40) set perpendicularly to the knife direction, and in that an axle (37) extends from one side plate (36) to the other side plate (41), whilst a pulley (38) is fastened rotatably on this axle (37).
10. Tackle mechanism according to one or more of the preceding claims, characterized in that the axle (37) of the pulley element (31) is arranged obliquely, so that an angle (β) is formed in a horizontal plane between the centre line of the axle (37) and the perpendicular to the outside of one of the side plates (36), (41) level with the centre line, in that the size of this angle (β) and the direction of the oblique path of the axle (37) are selected in such a way that, in a fastening of the pulley element (31), on the one hand the tackle-cord segments of the tackle cord (47), deflected at the pulley (38), which run under the hook (29) are located in a vertical plane perpendicular to the knife direction, this plane containing the fastening point of the tackle cord (28) on the hook (29) on the vertical bisecting line of this hook (29), and in that, on the other hand, the tackle-cord segments of this tackle cord (47) which run under the hook (30) are located in another vertical plane perpendicular to the knife direction, this plane containing the fastening point of the tackle cord (47) on the hook (30) on the vertical bisecting line of this hook (30), that is to say on the other edge of this vertical bisecting line of the hook (30) in comparison with the fastening point of the tackle cord (28) on this hook (30).
11. Tackle mechanism according to one or more of the preceding-claims, characterized in that the side plates (36), (41) of the pulley element (31) are designed in such a way that the insides of the segments (36'') and (41'') of these side plates run parallel to the obliquely set pulleys (38), and in that the side plates (36), (41) are so designed and the fastening aids (33) are so provided that, in a fastening of this pulley element (31), the outsides of these side plates (36), (41) are located in vertical planes perpendicular to the knife direction.
12. Tackle mechanism according to one or more of the preceding claims, characterized in that the pulley element (31) has a beam-shaped base part (32) which is provided with a T-shaped recess (33) terminating in the lower wall, in that there stands vertically on the upper wall of the base part an upright rib (32') which extends in the width direction and to which is fastened symmetrically a horizontal bush (39) which extends in the longitudinal direction of the base part (32) and in which an axle (40) projecting on the opposite sides is arranged rotatably, in that a side plate (36) and (41) is fastened to each of the two ends of the axle (40), in that the two side plates (36), (41) have downwards to a level with their fastening point an elongate segment (36'), (41') with parallel edges and terminate higher in a wider head (36''), (41'') rounded upwards, in that there is fastened to the side plate (36) centrally in relation to the head (36'') an axle (37), on which a rotatable pulley (38) is seated, in that there is provided centrally in the head (41'') a symmetrical circular depression (42), at the centre of which is located an orifice (44), in which the axle (37) is seated, the pulley (38) being partially surrounded by the walls of the depression (42), in that sufficient space remains between the side plates (36) and (41) and around the pulley (38) to deflect a tackle cord (47) from the top side under this pulley (38) and to guide it back upwards, in that the side plate (41) has in the lower segment (41'), along the inside, a U-shaped lower segment (43), the parallel walls (43') of which start from the underside of this side plate (41) and merge higher into one another in a bend (43''), and in that an orifice (45), in which the axle (40) is seated, is provided in this segment (43) near to the bend (43'').
13. Tackle mechanism according to one or more of the preceding claims, characterized in that a recess (46) is provided on one side in the outer wall of one of the side plates (36), (41) of the pulley element (31) and extends over the entire height of the wider segment (41''), and in that the walls of the recess can guide the segment of the tackle cord which runs downwards to the warp threads.
14. Arrangement of a plurality of tackle mechanisms according to one or more of the preceding claims on a Jacquard machine, characterized in that the pulley elements (31) of the tackle mechanisms, which cooperate with hooks (29), (30) of the same pair of complementary hook rows, are fastened next to one another to the same profiled body (35) running parallel to these rows.
15. Arrangement of a plurality of tackle mechanisms on a Jacquard machine according to Claim 14, characterized in that these pulley elements (31), which cooperate with hooks (29), (30) of the same pair of complementary hook rows, are fastened to profiled bodies (35), on the top side of which there is provided at least one projecting edge (34) of T-shaped cross-section which runs in the longitudinal direction and which corresponds in shape and dimensions to the T-shaped recess (33), these pulley elements (31) being firmly seated on one edge (34) in such a way that the T-shaped edge (34) is seated in the T-shaped recess (33).
16. Arrangement of a plurality of tackle mechanisms on a Jacquard machine according to Claim 14 or 15, characterized in that pulley elements (31), which cooperate with hooks (29), (30) of different complementary pairs of hook rows, are fastened to different profiled bodies (35) lying next to one another, whilst these profiled bodies (35) are connected to one another to form a fixed or movably arranged grid.
17. Arrangement of a plurality of tackle mechanisms on a Jacquard machine according to Claim 14, 15 or 16, characterized in that each profiled body (35) is provided with two projecting edges (34) of T-shaped cross-section, in that the pulley elements (31), which cooperate with hooks of pairs, lying next to one another, of complementary hook rows, are firmly seated on edges (34), lying next to one another, of the same profiled body (35) or of adjacent profiled bodies (35), and in that the tackle mechanisms, the pulley elements (31) of which are fastened to different edges (34), lying next to one another, of profiled bodies (35) lying next to one another, are arranged in such a way that respective tackle cords (47) extend between those same profiled bodies downwards towards the warp threads, the hooks (30) of those tackle mechanisms to which the two tackle cords (28), (47) are fastened being located opposite one another.
18. Jacquard machine, especially double-lift Jacquard machine, which is provided with at least one tackle mechanism according to one or more of the preceding claims.

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