Device for enabling and disabling the needle bars and the piercer bars in an embroidery machine

Description

[0001] The present invention relates to a device for enabling and disabling the needle bars and the piercer bars according to a predetermined program in an embroidery machine and particularly it offers improvements with respect to both the italian patent Nr. 1.153.643 filed on November 5, 1992 and the European Patent Application Nr. 0230.211 filed on June 6, 1986, the two both by the applicant of the present patent application.

[0002] The device forming the object of the present invention comprises a series of needle bars suitable to be enabled and disabled according to a certain program with the same arrangement of the structure described in the above cited italian patent, but representing an improvement thereof as in the present invention piercer bars are also provided having means for enabling and disabling the bars themselves independently from the means for enabling and disabling the needle bars.

[0003] It should be noticed as well that the present invention represents an improvement also with respect to the above cited European Patent Application as, while in the latter two different operating means are provided for enabling and disabling the needle bars and the piercer bars, in the present invention a single operating means is advantageously provided for enabling and disabling the needles and the piercers.

[0004] The characteristics and the advantages of the present invention are clearly pointed out in the following description of a non-limiting embodiment thereof made with reference to the attached drawings in which:

Figure 1 represents a schematic perspective view of this device;

Figure 2 is a vertical sectional view of the device;

Figure 3 is a sectional view according to the line III-III in Fig.2;

Figure 4 is a particular of this device ;

Figure 5 is an elevational schematic view of the means for both feeding and holding the thread, applied to this device; and

Figure 6 is a plan view of Fig.5.

[0005] Referring to the Figs. 1 and 2, an oscillating drive bar 1, according to the prior art relative to the embroidery machines, shifts to and fro on a horizontal plan according to the double arrow X. Said bar 1 is connected to either the needle bars 2 or the piercer bars 3 through connecting means to be described hereinafter.

[0006] For convenience of representation, the drawings show only one needle bar and a corresponding piercer bar, both said bars being a part of a so called rapport, even if such machines comprise a plurality of needle bars and the same number of piercer bars.

[0007] Said connecting means consists of two hooks 4 and 5, respectively for a needle bar 2 and for a piercer bar 3. A slider 6 is fixed on the needle bar 2 and surrounds the stationary shaft 7 while a slider 8 is fixed on the corresponding piercer bar 3. On said sliders 6 and 8 the hooks 4 and 5 are pivoted respectively through pins 9 and 10 around which small springs 11 and 12 are wound tending to cause the downward rotation of said hooks 4 and 5, as wholly shown in fig. 3.

[0008] In the upper part of the embroidery machine a body 13 is fixed, while being provided with holes through which the needle bars 2 or the piercer bars 3 slide, when these are alternatively connected to the oscillating drive bar 1. Above said body 13, a cap 15 is fixed, by means of screws, below which an actuating member 16 can be moved, e.g. through a pneumatic piston not shown in the drawing, while being provided with slots 17 in which pawls 18 having projections 19 and 19' are inserted. It is specified that one pawl is provided for each rapport consisting of a needle bar 2 and a corresponding piercer bar 3, and that the actuating member 16 is one and only for the whole machine and it can be shifted in two positions corresponding to the tiltings of the pawls according to the axes a and b, as shown in Fig.4. In correspondence with the two projections 19 and 19' of each pawl 18, two small blocks 20 and 21 are placed, in turn respectively above the hooks 4 and 5. In such an arrangement, when the pawls 18 tilt according to the axis a due to the shifting of the actuating member 16 in the direction of the arrow Y, the projections 19' of the various pawls 18 reach the small blocks 21 pushing them against the tail of the hooks 5 thus causing a raising thereof and disengaging them from the oscillating drive bar 1. On the contrary, when the actuating element 16 is shifted in the direction opposite to the arrow Y, the pawls 18 tilt according to the axis b so that the projections 19 of the various pawls 18 reach the small blocks 20 thus moving them downwards against the tail of the hooks 4 and raising them as shown in fig. 2 as well as disengaging them, such in a way, from the oscillating drive bar 1. As it can be seen, the single drive bar 16 causes, in one position, the enabling of all the needle bars and the disabling of all the piercer bars and, in the other position, it causes the enabling of all the piercer bars and the disabling of all the needle bars.

[0009] A slider 22 is provided, combined with each pair of small blocks 20 and 21, having its upper part inserted between the two small blocks 20,21 and actuated in its lower part by a resetting bar 23 which is moved both upwards and downwards, e.g. by means of a pneumatic piston not represented in the drawing. Said resetting bar 23 is connected to the various sliders 22 by an elastic member 24. Inside the connection of the slider 22 with the small blocks 20 and 21, two springs 25 are provided for each small block 20,21; such springs tend to push upwards the slider and the small blocks of each rapport.

[0010] In correspondence with each slider 22 a selecting lever 26 is provided which is pivoted at 26' and keeping lowered, in the position of Fig.2, both the corresponding sliders 22 and the small blocks 20,21 as well as keeping raised the hooks 4 and 5 which thus result disengaged from the oscillating drive bar 1. Such a position of the selecting levers 26 is obtained by lowering the resetting bar 23 thus causing the slider 22 to lower from the position represented in dashed line to the one represented in unbroken line of the upper end of the slider itself, so that said selecting levers 26 are pushed by the springs 27 in said position of disengagement. Thus it is clear that such a position of the levers 26 involves the disengaging of both all the needle bars and all the piercer bars.

[0011] The selecting levers 26 are provided with a projection 28 as well as the sliders 22 are provided with a projection 29 so that when the sliders 22 lower, by means of the resetting bar 23, from the position represented in unbroken line in Fig.2, the selecting levers 26 move to the position represented in dashed line in the same drawing and are held by magnets 30, if excited, each of them being placed in correspondence with a selecting lever 26. According to the above cited program, there are both excited magnets 30 and non-excited others so that the excited ones hold the corresponding selecting levers 26, while the non-excited ones allow the corresponding selecting levers 26 to return, as being pushed by the corresponding springs 27, in the position of disengagement.

[0012] It is clear that the hooks corresponding to the selecting levers 26 held close to the respective magnets, move to the position in which they engage with the oscillating drive bar 1 while the hooks corresponding to the selecting levers 26 which are in the position of disegagement represented in unbroken line in Fig.2, remain in the raised position in which they are disengaged from the oscillating drive bar 1.

[0013] Clearly what above explained is true for the hooks 4 or 5 which have not been previously disengaged from the pawls 18 and then a a selected operation will be obtained of either the needle bars 2 or the piercer bars 3, depending on the adopted program.

[0014] The oscillating bar 1, depending on the presetting thereof to cause the operation of either the needle bars or the piercer bars, moves according to motion laws different from each other and proper for each of these movements which are selectable upstream of the above described device.

[0015] It should also be noticed that the hooks 4 and 5 have an internal outline, which reaches the oscillating drive bar 1, shaped according to a plane, whereby it slides along the protruding part of said bar 1 without any wear of the touching parts.

[0016] As it can be seen in the Figs. 2,5 and 6, in the upper part of each slider 22 a rod 31 is fixed which passes through a narrow opening 32, acting as a pivot, obtained in a hub 33. At its opposite end, the rod 31 is pivoted at 34 on a middle lever 35 which is the counterpart of a roller supporting lever 36 in turn pivoted at 37 inside said lever 35. A roller 36', on which the yarn feeding each needle bar is wound, is freely rotatable around a pin 38 of the lever 36 and is integral with a gear 39 which in turn engages with another gear 40 on whose axis a braking means is mounted, not shown in the drawing, common to all the needle bars.

[0017] The lowering of the slider 22 from the position represented in dashed line to the one in unbroken line of the upper end of the slider itself, involves the disengaging of the lever 26, as well as a lowering of the rod 31 with its end fixed to the slider and a raising of the rod 31 with its end inserted in the pivot 34. The middle lever 35, thereby rotating upwards, pulls with its edge 41 the roller supporting lever 36 so that the gear 39 moves thus disengaging from the gear 40. In such a way, the yarn winding roller 36' stops, thereby interrupting the yarn feeding to the disengaged needle bar 2, which corresponds to said lever 26 in the position of disengagement.

[0018] As above explained, during the automatic operation, i.e. while actuating the sliders 22 by means of the resetting bar 23, the clockwise rotation of the middle lever 35 is obtained by means of the rod 31 as well as the contemporaneous raising of the roller supporting lever 36 which rests on the edge 41 of the middle lever 35.

[0019] Moreover, during the automatic operation, an upward releasing of the sliders 22, which corresponds to an enabling of the needle bars, involves an anticlockwise rotation of the middle lever 35 on the pivot 37, this being caused by the lowering of the pivot 34 and the consequent coupling of the gears 39 and 40.

[0020] The above described mechanism, illustrated in Fig.5, allows a manual free rotation of the roller supporting lever 36 on the pivot 37 from a position I to a position II in order to facilitate the threading of the yarn in the machine. Through a further upward movement of the lever 36 besides the position II, the edge 42 of the lever 36 touches the corner 43 of the middle lever 35 thus causing a clockwise rotation of the middle lever 35 itself on the pivot 37 with a consequent upward shifting of the pivot 34 and disengagement of the corresponding needle bar by means of the slider 22 which, being pushed by the end of the rod 31 opposite to the pivot 34, reaches the position of disengagement.

[0021] A subsequent manual enabling of the needle bar occurs by manually operating the selecting lever 26, thus causing it to reach the enabling position in which it touches the corresponding magnet.

[0022] As it could be noticed in the above description, the advantages of this invention are the following:
   improved simplicity and savings both in the realization and operation thereof, mainly due to the fact that the needle bars and the piercer bars are actuated by a single means, and to the fact that the actuating means of the selecting levers, e.g. consisting of magnets, are stationary and each of them for one selecting lever.

Claims

1. A device for enabling and disabling needle bars (2) and piercer bars (3) according to a predetermined program in an embroidery machine, comprising connecting means (4,5) suitable to connect said bars to an oscillating drive bar (1), characterized in that said connecting means are operated by a single actuating member (16) which connects said oscillating drive bar (1) to either the needle bars (2) or the piercer bars (3), and selecting levers (26) being suitable to connect to said oscillating drive bar (1) either all the bars (2,3) or some of them which have not been excluded, according to said program, from the motion of the oscillating drive bar (1), by means of said actuating member.

2. A device according to claim 1, characterized in that said actuating member (16) moves pawls (18) which are rotated in correspondence with two positions of the actuating member (16) so that each pawl (18), for each rapport consisting of a needle bar (2) and a corresponding piercer bar (3), in one position disengages one of the two bars (2,3) from the oscillating drive bar (1) while in the other position disengages from the oscillating drive bar (1) the other of the two bars (2,3).

3. A device according to claim 2, characterized in that said connecting means consists of both pivoted hooks (4,5) each of them provided with springs (11,12) which tend to cause the rotation of the hooks in the position of engagement, and sliders (6,8), on which said hooks (4,5) are pivoted, fixed to said needle bars (2) and piercer bars (3), so that when the hooks are in the position of engagement the oscillating drive bar (1) is connected only to the hooks in said position, said hooks (4,5) having a flat internal outline which touches said bar (1) without any wear for the parts in contact.

4. A device according to claim 2, characterized in that each pawl (18) has two projections (19,19') so that in one position of the pawl one projection (19) presses a first small block (20) touching a connecting means (4) which is disengaged from the oscillating drive bar (1), while in the other position the other projection (19') presses a second small block (21) touching the other connecting means (5) which is thereby disengaged from the oscillating drive bar (1).

5. A device according to claim 4, characterized in that a slider (22) is provided which is both combined with each pair of small blocks (20,21) of one rapport and suitable to be moved to the position of disengagement for disengaging the two respective connecting means (4,5) from the oscillating drive bar (1).

6. A device according to claim 5, characterized in that a selecting lever (26) is provided for each slider (22) so that each selecting lever (26) keeps, in a first position, the respective slider (22) in the position of disengagement corresponding to the pressure on both small blocks (20,21) of one rapport, while in a second position it lets said slider (22) free of reaching the position of engagement corresponding to the engagement of the connecting means (4 or 5) which has not been excluded by the corresponding pawl (18).

7. A device according to claim 6, characterized in that a resetting bar (23) is provided which is actuated to cause both the respective slider(22) to reach the position of disengagement and the respective selecting lever (26) to reach the position for keeping the slider (22) in said position of disengagement, said selecting lever (26) being pushed in said position by a spring means (27).

8. A device according to claim 7, characterized in that the resetting bar (23) is connected to the sliders (22) through elastic means (24) so that with a little shifting of said sliders (22) the selecting levers (26) move in such a position to keep the sliders (22) in the position of disengagement, while by continuing the shifting of the sliders (22) a projection (29) of the sliders themselves moves the levers (26) thus placing them in a second position in which they are held by magnets (30) while the sliders (22), being not kept, shift in the position of disengagement as being pushed by a spring means (27), and those magnets (30) which are excited hold the respective selecting levers in the position of engagement and the magnets which are not excited let the corresponding selecting levers (26) move in the position of disengagement, as being pushed by said spring means, according to the cited program.

9. A device according to claim 5, characterized in chat a rod (31) is fixed on each slider (22) and when the slider (22) reaches the position of disengagement, and consequently the corresponding needle bar (2) is disengaged, the feeding is interrupted of the yarn of each roller (36') on which the thread for feeding each needle is wound.

10. A device according to claim 9, characterized in that said rod (31), on the opposite side with respect to the slider (22), passes through a narrow opening (32) formed in a hub (33) and is pivoted with its pivot (34) on a middle lever (35) having an edge (41), so that when the corresponding slider (22) reaches the position of disengagement, the pivot (34) raises together with the lever (35) thus pulling with its edge (41) a roller supporting lever (36) and causing said interruption of the yarn feeding.

11. A device according to claim 10, characterized in that the roller supporting lever (36) is suitable to be manually rotated around a pivot (37) of said lever (35) without causing a rotation of said lever (35), in order to facilitate the yarn threading of the machine.

12. A device according to claim 11, characterized in that said roller supporting lever (36) is suitable to be further manually rotated from said position so that said lever (36) touches a corner (43) of said middle lever (35) thus causing the upward movement of the pivot (34) with a consequent positioning of the corresponding slider (22) in the position of disengagement.

Ansprüche

1. Vorrichtung zum In- und Außerbetriebsetzen von Nadelstangen (2) und Vorlochnadelstangen (3) nach einem vorbestimmten Programm in einer Stickmaschine, umfassend Verbindungsmittel (4, 5), die geeignet sind, die Stangen mit einer hin- und hergehenden Antriebsstange (1) zu verbinden, dadurch gekennzeichnet, daß die Verbindungsmittel durch ein einziges Betätigungselement (16) betätigt werden, welches die hin- und hergehende Antriebsstange (1) entweder mit den Nadelstangen (2) oder den Vorlochnadelstangen (3) verbindet und wobei Auswählhebel (26) geeignet sind, mit der hin- und hergehenden Antriebsstange (1) entweder alle Stangen (2, 3) oder einige von ihnen mittels des Betätigungselements zu verbinden, die gemäß dem Programm von der Bewegung der hin- und hergehenden Antriebsstange (1) nicht ausgeschlossen wurden.

2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Betätigungselement (16) Sperrklinken (18) bewegt, die in Übereinstimmung mit zwei Stellungen des Betätigungselements (16) gedreht werden, so daß jede Sperrklinke (18) für jeden Rapport der aus einer Nadelstange (2) und einer entsprechenden Vorlochnadelstange (3) besteht, in einer Stellung eine der zwei Stangen (2, 3) von der hin- und hergehenden Antriebsstange (1) freigibt, während sie in der anderen Stellung die andere der beiden Stangen (2, 3) von der hin- und hergehenden Antriebsstange (1) freigibt.

3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Verbindungsmittel sowohl aus schwenkbaren Haken (4, 5) von denen jeder mit Federn (11, 12) versehen sind, die dazu neigen, die Drehung der Haken in der Erfassungsstellung zu bewirken, als auch aus Schiebern (6, 8), auf denen die Haken (4, 5) verschwenkt sind, die an den Nadelstangen (2) und den Vorlochnadelstangen (3) befestigt sind, bestehen, so daß dann, wenn sich die Haken in der Erfassungsstellung befinden, die hin- und hergehende Antriebsstange (1) nur mit den Haken in dieser Stellung verbunden ist, wobei die Haken (4, 5) einen flachen Innenumriß aufweisen, der die Stange (1) ohne irgendeinen Verschleiß für die Teile, die in Berührung stehen, berührt.

4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß jede der Sperrklinken (18) zwei Vorsprünge (19, 19') aufweist, so daß in einer Stellung der Sperrklinke ein Vorsprung (19) einen ersten kleinen Block (20), der ein Verbindungsmittel (4) berührt, das von der hin- und hergehenden Antriebsstange (1) freigegeben ist, drückt, während in der anderen Stellung der andere Vorsprung (19') einen zweiten kleinen Block (21) drückt, der das andere Verbindungsmittel (5) berührt, das dadurch von der hin- und hergehenden Antriebsstange (1) freigegeben wird.

5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß ein Schieber (22) vorgesehen ist, der sowohl mit jedem Paar kleiner Blöcke (20, 21) des einen Rapports kombiniert ist als auch geeignet ist, in die Freigabestellung bewegt zu werden, um die zwei jeweiligen Verbindungsmittel (4, 5) von der hin- und hergehenden Antriebsstange (1) freizugeben.

6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß ein Auswählhebel (26) für jeden Schieber (22) vorgesehen ist, so daß jeder Auswählhebel (26) in einer ersten Stellung den jeweiligen Schieber (22) in der Freigabestellung hält, die dem Druck auf die beiden kleinen Blöcke (20, 21) eines Rapports entspricht, während er in einer zweiten Stellung, den Schieber (22) freigibt, die Erfassungsstellung zu erreichen, die der Erfassung der Verbindungsmittel (4 oder 5) entspricht, die durch die entsprechende Sperrklinke (18) nicht ausgeschlossen wurde.

7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß eine Rückstellstange (23) vorgesehen ist, die betätigt wird, um zu bewirken, daß sowohl der entsprechende Schieber (22) die Freigabestellung erreicht als auch der jeweilige Auswählhebel (26) die Stellung erreicht, um den Schieber (22) in dieser Freigabestellung zu halten, wobei der Auswählhebel (26) durch ein Federmittel (27) in diese Stellung gedrückt wird.

8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Rückstellstange (23) mit den Schiebern (22) über elastische Mittel (24) verbunden ist, so daß sich die Auswählhebel (26) mit einem qeringen Verschieben der Schieber (22) in eine solche Stellung bewegen, um die Schieber (22) in der Freigabestellung zu halten, während durch das Fortsetzen des Verschiebens der Schieber (22) ein Vorsprung (29) der Schieber selbst die Hebel (26) bewegt, um sie so in eine zweite Stellung zu verbringen, in welcher sie durch Magnete (30) gehalten sind, während die Schieber (22), die nicht gehalten werden, sich in die Freigabestellung verschieben, da sie von einem Federmittel (27) gedrückt werden, und jene Magnete (30), die erregt sind, die jeweiligen Auswählhebel in der Erfassungsstellung halten, und die Magnete, die nicht erregt sind, die Bewegung der entsprechenden Auswählhebel (26) in die Freigabestellung bewirken, da sie von den Federmitteln gedrückt werden, und zwar gemäß dem erwähnten Programm.

9. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß eine Stange (31) an jedem Schieber (22) befestigt ist und daß dann, wenn der Schieber (22) die Freigabestellung erreicht und folglich die entsprechende Nadelstange (2) freigegeben wird, die Zufuhr von dem Garn jeder Rolle (36') unterbrochen wird, auf der der Faden zum zuführen zu jeder Nadel gewickelt ist.

10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß sich die Stange (31) mit Bezug auf den Schieber (22) an der gegenüberliegenden Seite durch eine in einer Nabe (33) gebildete, schmale Öffnung (32) hindurch bewegt und mit ihrem Drehgelenk (34) an einem mittleren Hebel (35) mit einem Rand (41) schwenkbar gelagert ist, so daß dann, wenn der entsprechende Schieber (22) die Freigabestellung erreicht, sich das Drehgelenk (34) zusammen mit dem Hebel (35) nach oben bewegt, wodurch dieser mit seinem Rand (41) einen eine Rolle abstützenden Hebel (36) zieht und die Unterbrechung der Garnzufuhr bewirkt.

11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der die Rolle abstützende Hebel (36) geeignet ist, per Hand um ein Drehgelenk (37) des Hebels (35) herum gedreht zu werden ohne eine Drehung des (35) zu bewirken, um das Garneinfädeln der Maschine zu erleichtern.

12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der die Rolle abstützende Hebel (36) geeignet ist, weiter per Hand aus dieser Stellung gedreht zu werden, so daß der Hebel (36) eine Ecke (43) des mittleren Hebels (35) berührt, wodurch die Aufwärtsbewegung des Drehgelenks (34) mit einem resultierenden Positionieren des entsprechenden Schiebers (22) in der Freigabestellung bewirkt wird.

Revendications

1. Dispositif pour l'embrayage et le désembrayage des barres à aiguilles (2) et des barres à alênes (3) selon un programme préétabli dans une machine à border, comprenant des moyens de connexion (4,5) aptes à relier lesdites barres à une barre oscillante de commande (1), caractérisé en ce que lesdits moyens de connexion sont actionnés par un seul élément de commande (16) qui connecte ladite barre oscillante de commande (1) aux barres à aiguilles (2) ou aux barres à alênes (3), et que des leviers sélecteurs (26) sont aptes à connecter à ladite barre oscillante de commande (1) toutes les ou partie des barres (2,3) qui n'ont pas été exclues, selon ledit programme, du mouvement de la barre oscillante de commande (1) au moyen dudit élément de commande.

2. Dispositif selon la revendication 1, caractérisé en ce que ledit élément de commande (16) déplace des cliquets (18) qui sont tournés en correspondance de deux positions de l'élément de commande (16) de sorte que chaque cliquet (18), pour chaque rapport formé par une barre à aiguilles (2) et une barre à alênes (3) correspondante, dans une position dégage une des deux barres (2,3) de la barre oscillante de commande (1) et dans l'autre position dégage de la barre oscillante de commande (1) l'autre des deux barres (2,3).

3. Dispositif selon la revendication 2, caractérisé en ce que ledit moyen de connexion consiste en des crochets (4,5) montés les deux sur des pivots et munis chacun de ressorts (11,12) tendants à faire tourner les crochets dans la position d'engagement et des coulisseaux (6,8), sur lesquels lesdits crochets (4,5) sont montés à basculage, fixés auxdites barres à aiguilles (2) et barres à alenes (3), de sorte que lorsque les crochets sont dans la position d'engagement la barre oscillante de commande (1) est connectée seulement aux crochets dans ladite position, lesdits crochets (4,5) ayant un profil intérieur plan qui touche ladite barre (1) sans usure pour les parties en contact.

4. Dispositif selon la revendication 2, caractérisé en ce que chaque cliquet (18) a deux saillies (19,19') de sorte que, dans une position du cliquet, une saillie (19) presse un premier petit bloc (20) en contact avec un moyen de connexion (4) qui est dégagé de la barre oscillante de commande (1), tandis que dans l'autre position l'autre saillie (19') presse un second petit bloc (21) en contact avec l'autre moyen de connexion (5) qui est ainsi dégagé de la barre oscillante de commande (1).

5. Dispositif selon la revendication 4, caractérisé en ce qu'un coulisseau (22) est prevu qui est combiné avec chaque paire de petits blocs (20,21) du même rapport et apte à être déplacé dans la position de dégagement pour dégager de la barre oscillante de commande (1) les deux moyens respectifs de connexion (4,5).

6. Dispositif selon la revendication 5, caractérisé en ce qu'un levier sélecteur (26) est prevu pour chaque coulisseau (22) de sorte que chaque levier sélecteur (26) retient, dans une première position, le coulisseau respectif (22) dans la position de dégagement correspondante à la pression sur les deux petits blocs (20,21) du même rapport, tandis que dans une seconde position il laisse ledit coulisseau (22) libre d'atteindre la position d'engagement correspondante à la position d'engagement du moyeu connecteur (4 ou 5) qui n'a pas été exclu par le cliquet correspondant (18).

7. Dispositif selon la revendication 6, caractérisé en ce qu'une barre de remise au zero (23) est prevue qui est actionnée pour faire atteindre au coulisseau respectif (22) la position de dégagement et au levier sélecteur respectif (26) la position pour retenir le coulisseau (22) dans ladite position de dégagement, ledit levier sélecteur (26) étant poussé dans ladite position par des moyens à ressort (27).

8. Dispositif selon la revendication 7, caractérisé en ce que la barre de remise (23) est connectée aux coulisseaux (22) par des moyens élastiques (24) de sorte qu'avec un petit déplacement desdits coulisseaux (22) les leviers sélecteurs (26) se déplacent dans une position telle que les coulisseaux (22) sont tenus dans la position de dégagement, tandis qu'en persistant le déplacement des coulisseaux (22) un ergot (29) des mêmes coulisseaux déplace les leviers (26) en les plaçant dans une seconde position dans laquelle ils sont retenus par des aimants (30), tandis que les coulisseaux (22) non retenus et poussés par des moyens à ressort (27) se déplacent dans la position de dégagement et les aimants (30) qui sont excités retiennent les leviers sélecteurs correspondants dans la position d'engagement, tandis que les aimants qui ne sont pas excités laissent les leviers sélecteurs correspondants (26) se déplacer dans la position de dégagement poussés par lesdits moyens à ressort selon ledit programme.

9. Dispositif selon la revendication 5, caractérisé en ce qu'une tige (31) est fixée à chaque coulisseau (22) et, lorsque le coulisseau (22) atteint la position de dégagement et par conséquent la barre à aiguilles correspondante (2) est dégagée, l'alimentation du fil de chaque rouleau de bobinage (36') est interrompue.

10. Dispositif selon la revendication 9, caractérisé en ce que ladite tige (31) du coté opposé du coulisseau (22) passe à travers une ouverture étroite (32) d'un moyeu (33) et est montée avec son pivot (34) sur un levier intermédiaire (35) ayant un bord (41) de sorte que, lorsque le coulisseau correpondant (22) atteint la position de dégagement, le pivot (34) s'élève en même temps que le levier (35) en entrainant ainsi avec son bord (41) un levier porte-rouleaux (36) et procurant ladite interruption de l'alimentation du fil.

11. Dispositif selon la revendication 10, caractérisé en ce que le levier porte-rouleaux (36) est apte à être tourné à la main autour d'un pivot (37) dudit levier (35) sans faire tourner ledit levier (35) afin de faciliter l'enfilage du fil dans la machine.

12. Dispositif selon la revendication 11, caractérisé en ce que ledit levier porte-rouleaux (36) est apte à être tourné ultérieurement à la main de ladite position, de sorte que ledit levier (36) entre en contact avec une arête (43) dudit levier intermédiaire (35) en provoquant ainsi le déplacement ascendant du pivot (34) avec le positonnement conséquent du coulisseau correspondant (22) dans la position de dégagement.

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