DE2107160A1 - Open shed double stroke jacquard machine - Google Patents

Description

BR. R. POSCHENRIEDER

DR. E. BOCTTKER
DIPL.-ING. Γ f ■ JLLER

8 -fri <. J χ 4. i · [$ Q
■ le-Gi-ai ^ -.- Ta e 38
Telephone 440755

Apparatefabrik AG-. Huttwil Huttwil (BE) langenthalstrasse (Soliweiz)

Open shed double stroke jacquard machine

The invention relates to an open shed double-stroke jacquard machine with two resilient legs each Sinkers, each leg of which is provided with two tongues that cooperate with a lifting knife or an open shed knife are, wherein for the open shed knife a drive device and guides for moving the open shed knife are provided alternately upwards and downwards with respect to the sinkers, so that they remain in the open compartment position certain sinkers each come into engagement with an associated open shed knife, and with transverse to the Pushing pins arranged on the sides of the plates for the optional action on the individual legs.

An open shed double-stroke jacquard machine with two resilient legs having sinkers is already known, which are provided with at least one hook on each leg, which can interact with both a lifting knife and an open shed knife, a drive device and guides provided for the open shed alM _f which these knives during the lifting knife

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movement move upwards and downwards at an angle, so that in each case on the side of the ascending lifting knife the open tray knife evades, while the open tray knife on the other side goes into readiness for the To let hook in the sinker legs not pushed away by the push pins and so the sinkers in the open compartment position to keep.

This known design has the disadvantage that the hook cooperating with the open shed knife must be pushed away when climbing from this open shed knife after he has reached the effective edge of the open shed knife has happened to spring back and intervene in the open knife. Bumps when climbing the top of the hook not in engagement with the lifting knife on the underside of the open specialist knife which on the one hand causes noise and on the other hand is associated with a great deal of material wear is.

Another major disadvantage is the following: Legs of those boards that are not in To remain open, but rather to go down, are distracted by the impact of the push-pins, so that they cannot hang in the open compartment knife. However, this impact needle action must last so long until the hook of the descending plate has passed the rising knife, since the plate of the latter would otherwise be torn up again. Firstly, this has the consequence that push pins and sinker legs Grind against each other over more than half the stroke, causing further excessive wear arises, and second, that the relatively long time of the pushpin impact for preparation the next pushpin function

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get lost. As long as the push pins have not returned to the starting position, neither can one The jacquard card is switched on and a needle selection is prepared by means of electromagnets.

All of these disadvantages mentioned are one reason that the operating speed of this known Jacquard machine cannot be increased significantly.

It is the object of the invention to provide an open-shed double-stroke jacquard machine to create, which does not adhere to the disadvantages listed above, and with a higher working speed than previous jacquard machines works flawlessly.

The open-shed double-stroke jacquard machine according to the invention is characterized in that the legs of the sinkers assigned, transversely to the legs movable and alternately acting on the free leg ends Leits are provided, each on the side of the lifting knife rising to the top hold the legs of the sinkers that have remained in the high shed position in the position of engagement with this lifting knife, and that the guide rails before reaching the high position of the lifting knife moving upwards towards this and guardrail drive is provided moving away from the lifting knife moving downward.

The subject matter of the invention is explained in more detail below with reference to the drawings, for example. Show it:

1 shows a section from an open shed double-stroke jacquard machine, only the essential parts are shown,

Fig. 2 is a side view of a device for selecting the ones to be actuated

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Push pins and for pushing them,

3 shows a basic illustration of a

Drive for the open shed knife of the jacquard machine according to Fig. 1,

Fig. Aa to Ae movement diagrams of the various moving parts, such as lifting knives, open shed knives, holding rails, pushing rails and needle plates,

FIGS. 5a to 5f show a circuit board in its various positions with respect to FIG other moving parts of the jacquard machine in a schematic representation, and

Fig. 6a to 6f the same board in further different positions *

Fig. 1 shows a section parallel to the needles 1 and 2 through an open shed double-stroke jacquard machine. Four boards 3 are arranged side by side in one plane. Perpendicular to the plane of the drawing For example, sixty sinkers 3 can be arranged one behind the other, so that the whole jacquard machine two hundred and forty such boards 3 includes.

Each plate 3, which is in the rest position, these are the first two plates from the left in FIG. 1, rests on a stationary stop plate 4. In the widened cross-piece 5 there are two holes £ ;: u in the hanging of the choir cords 7. Although several choir cords 7 can be attached to a board 3, only one per board is shown in FIG. Each sinker 3 has two upwardly directed legs 8 and 9 which are biased outward and accordingly have a tendency to move away from the lifting knives 10 and 11.

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BATH ORIGINAL

On the inside of the legs 8 and 9 are two each Tongues 12 and 13 are provided. The lower tongues 13 are to cooperate with the lifting knives 10 or 11 and the upper tongues 12 for cooperating with open specialist knives 14 and 15 respectively. Fixed stop rods are located in the area of the free ends of the legs 8 and 9 16, which prevent the pretensioned legs from moving away from each other beyond a permissible extent. The distance between two stop rods 16 is so great that the lifting knives 10 and 11 and the open shed knives 14 and 15 can move past the tongues 13 and 12, respectively, without affecting the sinkers 3. In the lower part, the boards 3 are guided in a rake, not shown, so that they are only on- and can move away. The upper part of the legs 8 and 9 is guided between the push pins 1 and 2, so that they cannot tip over.

The lifting knives 10 and 11 are alternately moved up and down via a drive (not shown). In Fig. 1 is the left-hand lifting knife

10 in its lower position and the lifting knife on the right

11 shown in its high position. The left-hand open shed knife 14 can refer to FIG. 1, from top left to bottom right and vice versa and the right-hand open tray knife 15 from bottom left move to the top right and vice versa. In the figure, the open shed knife 14 is just in the upper left position and the open tray knife 15 in the lower left position. All movements of the same Knives with reference marks run synchronously.

The drive for the open shed knives 14 and 15 is shown in more detail in FIG. All open shed knives 14 are connected to crossbars 18 via webs 17, which in turn have two longitudinal

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members 19, only one of which is shown on Keep distance. Each longitudinal member 19 is via two intermediate pieces 20, which on the one hand around a pin 21 pivotable on the longitudinal member and on the other hand pivotable about a pin 22 on a stationary part of the Jacquard machine are linked to the latter. On the right-hand end face 23 of the A pressure roller 24 rests on the longitudinal member 19, which via a two-armed lever 25 which rotates about an axis 26 is pivotable, pivot movements from a cam 27 to the longitudinal member 19 transmits. One on the longitudinal link 19 attached spring 28 pulls the same down, the end face 23 of the longitudinal member 19 on the pressure roller 24 is printed.

Corresponding to the rotation of the cam 27, the longitudinal member 19 is moved along an arc of a circle according to the arrow 29, the radius of which is given by the distance between the pins 21 and 22 of the intermediate piece 20, from shifted top left to bottom right and vice versa. These movements are carried out by all open shed knives 14, because they are connected to the longitudinal member 19 via the webs 17 and the crossbars 28.

All open shed knives 15 are via webs 17 'and crossbars 18' with two longitudinal members 19 ', of which only one is shown connected. The longitudinal link 19 is similar to the longitudinal link 19 Via intermediate pieces 20 'and pins 21' and 22 'with a stationary part of the jacquard machine, not shown articulated. Starting from a cam 27, the longitudinal member 19 'is moved via the two-armed lever 25 'and the pressure roller 24' against the action of a spring 28 'issued a movement, as this by the Arrow 29 'is shown. Accordingly, can

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the open specialist knife 15 from bottom left to top right and vice versa when the cam 27 'rotates.

The shafts 30 and 31 'on which the two

Cams 27 and 27 'are attached, rotate with the same Speed. The cams 27 and 27 'are, however, arranged offset, so that the movements of the open shed knife and 15 do not occur at the same time.

It can also be seen from FIG. 1 that a frame 31 is also provided above the open shed walls 14 and 15 is provided with guide rails 32 and 33 projecting on the underside thereof. This frame 31 and the guide rail are in a guide, not shown, transversely to the Sr-crochets 8 and 9 and are by on both end faces 34 and 34 'adjacent rollers 3 5 and 35' are driven. The movements of these roles are grounded two-armed levers 36 and 36 'controlled by crouching 37 and 37'. These cams 37 and 37 'are preferably on the same '-JeIIe jO or 30' arranged as the cams or 27 'for the actuation of the open shed knife 14 and 15. The cams 37 and 37 'are so opposite to each other offset that the rollers 35 and 35 'are moved either to the right or to the left simultaneously.

In the position shown in Fig. 1, the guard rails 32 and 33 are in the left End position. The inner sides 38 of the guide rails 32 lie in the same plane as the stop surfaces 39 of the Stop rods 16, while the inner sides 40 of the guard rails 33 by the distance 42, along which the Guard rails can be moved, opposite the stop surfaces 41 of the stop rods 16 against the Inside of the legs 8 and 9 are shifted. In the other, the right-hand end position of the guardrails it is just the other way around, i.e. the inner surfaces

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40 of the guide rails 33 are then located in the same plane as the stop surfaces 41 of the stop rods 16 and "the inner surfaces 38 of the guide rails 32 protrude into the space between the legs 8 and 9.

■ - The push pins 1 rest on cross bars 43 and the push pins 2 on cross bars 44. These cross bars also serve as stops for blocks 45, which are rigidly connected to the push pins, and limit the displacement movements of the push pins. These cross bars are preferably made of "Teflon ¹¹ " to reduce friction and noise.

The further over the cross bars 43 and 44 protruding ends 46, respectively. 46 'of push pins 1 and 2, respectively thickened and are under the action of compression springs 48 and 48 'on likewise thickened ends 49 and 49' of Front needles 50 or 50 'on. These pre-needles are parts of a device 51 for selecting the ones to be actuated Push pins, which device is described in more detail below with reference to FIG. Each push pin 1 and 2 has a driving lug 52 to, if necessary, a leg 8 or 9 against the associated lifting knife to be pressed, as is the case, for example, with the leg 8 of the first board 3 viewed from the left.

FIG. 2 shows the above-mentioned device 51 for selecting the pushing needles 2 to be actuated. One Similar device with Yorn needles 50 is on the left-hand side of the embodiment shown in FIG arranged and intended for actuating the push pins 1.

A needlework 54 is rigidly connected to the jacquard machine by means of a carrier part 53. The needlework 54 is penetrated by the front needles 50 and the tapered ones Ends 55 of the front needles protrude from the needlework 54. Each front needle is a holding needle 56 with a not

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assigned cams shown. The associated pre-needles 50 lie on these cams (not shown) on.

The upper ends of the holding needles 56 are located in the interior of a winding shown only once 57 which is accommodated in a bore 58 of the block. A soft iron core 60 is fixedly arranged in the middle of the winding 57. Immediately above it is a Rod-shaped permanent magnet 61. Through this permanent magnet the holding needle 56 is tightened and held in its upper position.

Under the holding needles 56 is a driven up and down needle plate 62. A brief current flow through the winding 57 at the time the needle plate 62 is the first third of its. Downward movement performs, and in the sense that a field opposite to the permanent magnet 61 is built up, causes that the holding needle 56 in question by its own weight and the weight of the front needle 50, which is not above the shown cam of the holding needle 56 is supported on this, the needle plate 62 following falls down and in the lowest position of the same rests on it, while the " The tapered end 55 of the front needle 50 comes to rest on a bumper rail. This bumper rail has one on the End face of the tapered end 55 of the preinstalled needle 50 acting abutment face 64. Corresponding to the four on top of one another arranged front needles 50 are also provided four bumper bars 63 arranged one above the other. These are attached to an angle lever 6 5, which in turn is pivotable about a shaft 66. At the other end of the Angle lever 65, a roller 68 cooperating with a cam 67 is arranged around the bumper rails 63 to move against the action of a tension spring 69 at the appropriate moment against the pre-needles 50. This will be

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the selected pre-needles 50, i.e. those that are no longer held by the permanent magnet 61 is moved to the left.

The needle plate 62 is on one about the axis 2 (5 pivotable angle lever 70 attached. At the other end of this angle lever is one with a cam 71 cooperating Roller 72 arranged. This is pressed against the cam 71 by the weight of the needle plate 62. After the bumper rails 63 have carried out their pushing movement, they return to the position shown in FIG. and then the needle plate 62 is raised by the cam 61. this causes all of the holding needles 56 resting on the needle plate 62 to rest on their associated soft iron cores 60 are brought up and held by the permanent magnets 61, or released again when the winding 57 is energized can be. As a result of the upward movement of the holding needles 56, all of the pre-needles 50 also return to their starting position return.

The cam 67 for operating the push bars 63 and the cam 71 for lifting the needle plate 62 are arranged on the same shaft 30 on which the cam 27 for actuating the open shed knife 15 and the Cams 37 for moving the support rails 32 and 33 are attached. Hence the individual movements inevitably dependent on one another and the sequences of movements coordinated with one another in terms of time.

These movements are shown in Figs. 4a to 4e in function of the rotation angle α of the drive shaft shown graphically, wherein in Fig. 4 _e only the rotational angle α is recorded in degrees. 4a shows the essentially harmonious upward and downward movement of the counter-rotating lifting knives 10 and 11.

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The stroke is plotted on the ordinate. The solid curve 73 shows the sequence of movements of the lifting knife 10 and the dashed curve 74 shows the sequence of movements of the lifting knife 11. Each lifting knife reaches during one revolution of the drive shaft once its high position and once its low position.

Fig. 4b represents the sequence of movements Open shed knife 14 and 15. The full curve 7 5 shows the movements of the open shed knife 14 and the dashed line Curve 76 the movements of the open specialist knife 15. From this illustration it can be seen that the Open knife 14 and 15 do not move at the same time, but that after one diagonally has moved upwards, the other has moved diagonally downwards and that the two open-section knives never move at the same time are below.

The jig ·. 4c shows the movement of the guardrails 32 and 33, which move simultaneously and in the same direction because they are fixedly connected to the frame 31. On the ordinate, oil displacement of the guardrails to the right and below to the left is plotted, the left and right referring to FIG. 1 . The guide rails 32 and 33 are accordingly shifted once from left to right and back during one full revolution of the drive shaft.

The movements of the bumper rails 63 are recorded in FIG. 4d. The full curve 77 shows the Movement of the bumper rails, not shown in the figures, and the dashed curve 78 the movements the bumper rails 63 shown in FIG. 2. The bumper rails arranged on both sides of the jacquard machine are alternately turned once per full Rotation of the drive shaft actuated.

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FIG. 4e shows the movement of the buttons associated with each device 51 for selecting the push pins Needle plate 62, on the one hand "when going down the holding needles 56, whose magnetic windings are excited, a harmonic Forces falling motion, and on the other hand, when going up, brings it back to the soft iron cores 60, so that the holding needles 56 come into contact with the needle plate 62 during this entire movement sequence and in this way prevents the holding needles from falling freely and hitting the needle plate will. The full curve 79 belongs to the device 51, not shown, and the dashed curve 80 belongs to it the needle plate 62 shown in FIG. 2.

In FIGS. 1, 2 and 3, the individual parts are drawn in that position which corresponds to the angle of rotation a = 270 °.

With reference to FIGS. 5a to 5f and 6a to 6f, the following is the function of the double liftoff mentioned above enfach jacquard machine described, whereby in all these figures only the one plate 3 with the parts acting directly on it are shown schematically is.

In the low-lying position shown in FIG. 5a of the board 3, which is, for example, the board shown in the second position from the left in FIG. corresponds, the crosspiece 5 lies on the stop plate 4 on. The free ends of the two outwardly biased legs 8 and 9 lie on the opposite sides Stop surfaces 39 and 41 of the stationary stop rods 16 on »The hooks 13 of the legs 8 and 9 are so far apart that the lifting knives 13 and 14, without touching these hooks, open and can move away. The board 3 thus remains without further

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external influences in the low-lying area, regardless of whether the. Move the lifting knife up and down. The positions of the lifting knives, the open shed knives and the holding rails corresponds to an angle of rotation · α = 270.

The board 3 should now be in the raised position arrive, at the point in time which corresponds to the angle of rotation α = 270 °, the leg 8 by means of the assigned push needle 1 is printed against the lifting knife 10, which is just about to move away from its lower position to move towards the high altitude. The edge of the lifting knife 10 comes under the tongue 13 of the leg 8, as shown in Fig. 5b. The underside of the tongue 13 is inclined inwards and lies after the engagement on the likewise inwardly inclined surface of the lifting knife 10. Thanks to these inclined surfaces, the hook 13 remains in engagement with the lifting knife 10, even when the pushing needle 1 is not more is pressed against the leg 8. It is therefore sufficient the driver nose 52 of the push pin 1 only briefly to press the leg 8 until the plate 3 has been raised a little by the lifting knife 10. While During this time, the leg 8 has moved only a little, and that due to the contact with the driver lug 52 The frictional losses caused by the leg 8 are relatively small.

A further phase of the upward movement of the plate 3 is shown in FIG. 5c. This figure shows the position of the individual parts, which corresponds to the angle of rotation α = 360 ° or 0 °. The lifting knives 10 and 11 are at the same height and thus the board 3 also has half the V / eg between the lower shelf and the high layer covered. The tongue 13 of the leg 9, also moving upwards, passed the Edge of the downward moving lift knife 11, without

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to touch this because the free end of the leg 9 rests on the stop surface 41 of the stop rod 16. Shortly before reaching this central position, the open shed knife 15 has moved from the position indicated by dashed lines in the position shown in solid lines moved obliquely from the bottom left to the top right.

At this point in time, the guardrail 33 is located directly above the leg 9. Even before that 'The free end of this leg 9 could hit the guardrail 33, this is moved to the right, as indicated in FIG. 5d. The position shown therein corresponds to the angle of rotation of the drive shaft of α = 60 °. The lifting knife 10, which rises and is in engagement with the tongue 13 of the leg 8 hasn't quite reached its peak yet. The tongue 12 has just passed the edge of the open pocket knife 14, after this has been moved shortly before from the top left to the bottom right and the passage for the tongue 12 has released. The free leg ends reach unhindered between the two guide rails 32 and 33. Although the clear width between the guardrails is a little larger than the distance between the outer surfaces of the Legs, the opposing inner surfaces of the guide rails are beveled so that the leg ends can be safely lifted between the guardrails.

Fig. 5e shows the board 3 in the high shed position, which corresponds to an angle of rotation α = 90 °. The lifting knife 10 is in the upper position and the lifting knife 11 in the lower position. The tongue 13 of the leg 8 is still in engagement with the lifting knife 10. If there are no further forces on the plate at this point in time 3 act, the same is taken with the lifting knife 10 back into the lower shed position.

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However, at this point in time, the leg 9 is pushed by the driver nose 52 of the associated push pin 2 pressed against the lifting knife 11, as shown in FIG. 5f, the tongue 12 of the leg arrives in engagement with the open shed knife 15 when the lifting knife 10 begins to lower. The board 3 only lowers by about 1-2 mm. As soon as' the tongue 12 of the Leg 9 in engagement with the open specialist 15 has reached, the pushing needle actuating the leg 9 has 2 finishes its work and is moved back again. During this short time, the leg 9 is opposite the driver lug 52 of the pusher needle 2 barely displaced, so that only negligible frictional losses on this Contact parts have arisen.

The command that the board 3 remains in the open compartment position must always be given to the free leg 8 or 9 are transmitted, which is therefore not in engagement with one of the lifting knives. Since now in the next Movement phase the lifting knife 11 rises and will then come into engagement with the leg 9 is before necessary that the other open shed knife 14 the Holds the circuit board 3 in the open compartment position. For this purpose, according to FIG. 6a, the open shed knife 14 shifted from the bottom right to the top left, engaging with the tongue 12 of the leg 8 arrives because the guardrail 32 holds the leg in readiness. The position shown in FIG. 6a corresponds to an angle of rotation α = 180 °. The lowering lift knife 10 and the rising lift knife are at the same height and the blank 3 is suspended from both open shed knives 14 and 15 at the same time.

After the tongue 12 of the leg 8 has come into engagement with the open shed knife 14, the

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Guard rails 32 and 33 moved to the left, and that Open shed knife 15 moves from top right to bottom left, see Fig. 6b. The leg 9 is through the guardrail 33 held so that the ascending lifting knife shortly before reaching its high position in the tongue 13 of the Leg 9 can intervene. Another phase of the ascent of the lifting knife 11 is shown in FIG. 6c, whereby the positions of the individual parts correspond to an angle of rotation α = 225 °.

In Fig. 6d the lifting knife 11 is in its high position, corresponding to an angle of rotation α = 270 °, shown. The lifting knife 11 has raised the leg 9 with the tongue 13 by 1 to 2 mm, whereby the tongue 12 of the leg 8 has been lifted from the open tray knife 14 is «The leg 8 has pulled out thanks to its bias from the position indicated by dashed lines in the The position shown is moved up to the stop surface 41 of the stop rod 16. If at that time the associated pusher needle 1 is not actuated, the board 3 goes simultaneously with the lifting knife 11 in the Lowered position down, with the tongue 13 of the leg 8 on the upwardly moving lifting knife 10 without Touching it is moved past.

However, if the associated pusher needle 1 is actuated, as shown in FIG. 4, FIG. 6e, then it is elongated the tongue 12 of the leg 8 over the open shed knife 14 $ so that when the straight knife is then lowered 11 the blank 3 again gets stuck on the open compartment knife 14 and remains in the open compartment position *

Now the lifting knife 10 rises again and is when it reaches its high position in the tongue 13 of the Leg 8 intervene * The next command about the remaining of the board 3 in the open compartment position or that Lowering the board into the lower shed position can accordingly

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only the leg 9 are transmitted. It is therefore necessary to move the board 3 before the Lifting knife 11 from the open shed knife 14 to the open shed knife 15 to be reassigned. For this purpose, according to FIG. 6f, the open shed knife is used at an angle of rotation α = 3 50 ° 15 is moved from the bottom left to the top right so that it comes into engagement with the tongue 12 of the leg 9. Then the guide rails 32 and 33 are shifted to the right and the open tray knife 14 from the top left moved to the bottom right. These last-mentioned movements can be seen in FIG. 5d.

■ If then at the angle of rotation α = 90 ° the Leg 8 is not pressed against the lifting knife 11, the board 3 goes with the lifting knife 10 in the lower shed position down. Just before the lifting knife 11 reaches its low position has reached, the board 3 is placed on the stop plate 14 and the lifting knife 11 is when it is reached Depth the hook 13 of the leg 8 free and the Leg 8 springs outward until its free end the stop surface 41 of the stop rod 16 rests. The board 3 has thus reached the starting position which is shown in Fig. 5a.

According to the above, it is the task of the guide rails 32 and 33 to hold the tongue 13 of the respective free leg 8 or 9 of the board 3 in the open position ready for engagement for the ascending Hubmeseer 10 or 11 and also the transfer of itself blanks 3 located in the upper shed position from an open shed knife 14 · or. 15 to allow the other.

In all jacquard machines, the hooks, which here correspond to the tongues 12 and 13, as well as the lifting and open shed knives 11 and 10 are exposed to the greatest loads. In the case of the jacquard machine described above, there is no sliding in any operating phase

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Snapping the tongues over the edges of the knives instead of. The tongues are only brought into the engagement position after passing the knife, so that when actual engagement process no sharp edges, but the beveled surfaces of the tongues or the Put knives on top of each other. This significantly reduces the wear and tear on these parts.

The only parts that temporarily slide on each other during operation are the outside of the free ends of the legs 8 and 9, the stop surfaces 41 of the stop rods 16 and the inner sides of the guide rails 32 or 33. The guide rails and the stop rods can therefore preferably be equipped with a friction-resistant Be provided with a plastic covering, which then also results in a reduction in noise generation.

Because the legs 8 and 9 are brought into the engagement position against their clamping force either by the associated pin 1 or 2 or the guide rails 32 or 33, they tend to vibrate much less, ie they work much more reliably. In addition, the pushing movement of the pushing needles 1 and 2 extends over around 120 degrees of crank angle, so that 240 degrees of crank angle are available for raising and lowering the needle plate 62 according to FIG. 4e, which corresponds to two thirds of a rotation. In contrast, in previously known jacquard machines, for reasons already explained, the action of the push needles 1 or 2 on the sinker legs 8 or 9 must be of longer duration, so that for raising and lowering the needle plate 62 or an analog turning or indexing of a jacquard card only 160 degrees of crank angle or 45% of a revolution remain.

The reasons given enable the working speed of such jacquard machines to be

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loaned can be increased. Previously known jacquard machines work with a maximum of 240 strokes of the lifting knives per minute. The jacquard machine described above works with 600 Strokes of the lifting knives per minute are still flawless. * At such working speeds, it is necessary to hitherto customary, the choir cords 7 pulling down weights by spring elements or elastic trains replace, as the acceleration of the blanks is greater than the acceleration due to gravity.

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Claims (4)

PATENT CLAIMS ' Ί) Open shed double-stroke jacquard machine with two resilient legs each having .Platinen, each leg are provided with two tongues that interact with a lifting knife or open shed knife, with a drive device and guides for moving the open shed knives alternately up and down for the open shed knife are provided opposite the sinkers, so that the sinkers remaining in the open shed position each come into engagement with the associated open shed knife, and with pushing needles arranged transversely to the legs of the sinkers for the optional action on the individual legs, characterized in that the legs (8, 9) associated with the plates (3), movable transversely to the legs and reciprocally acting on the free leg ends, I / Eitschienen (32, 33) are provided, each on the side of the lifting knife (10, 11) rising into the upper position, the legs of the sinkers that have remained in the high shed position in engagement position with this Hold em lifting knife, '' and that a guide rail drive (35, 36, 37) is provided before reaching the hollow position of the lifting knife moving upwards on this m and away from the lifting knife moving downwards. 1 0 9 a A (i / Π 9 5 7 21Q7160 2. Machine according to claim l, characterized in that that the resilient legs (8, 9) are pretensioned in the direction away from the lifting knives (10, 11) and that Fixed stops (16) are provided to limit the distance between the legs in the area of the free leg ends are. 3. Machine according to claim 2, characterized in that the lifting knife (10, 11) and the open shed knife (14, 15) between the legs of the boards are arranged. 4. Machine according to claim 1, characterized in that the guide track for the open compartment knife (14, 15) is in the shape of an arc of a circle is. 1098 36/0957