EP0124450B1 - Loom dobbies - Google Patents

Loom dobbies Download PDF

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Publication number
EP0124450B1
EP0124450B1 EP84420051A EP84420051A EP0124450B1 EP 0124450 B1 EP0124450 B1 EP 0124450B1 EP 84420051 A EP84420051 A EP 84420051A EP 84420051 A EP84420051 A EP 84420051A EP 0124450 B1 EP0124450 B1 EP 0124450B1
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EP
European Patent Office
Prior art keywords
hook
reading device
selection
retaining member
dobby
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP84420051A
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German (de)
French (fr)
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EP0124450A1 (en
Inventor
Jean-Paul Froment
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP0124450A1 publication Critical patent/EP0124450A1/en
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Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/06—Double-lift dobbies, i.e. dobbies in which separate draw-knives or equivalent operate on alternate picks
    • D03C1/08—Double-lift dobbies, i.e. dobbies in which separate draw-knives or equivalent operate on alternate picks reversible, i.e. correct sheds open automatically when the loom is driven backwards

Definitions

  • the present invention relates to dobbies of the type with scales used for training the crowd on the weaving looms and it relates more particularly to the arrangement of the selection hooks interposed in these machines between each balance and the reading device.
  • each of the scales is provided at its ends with two coupling hooks which are intended to cooperate with two selection hooks controlled by the reading device in function of the weave or design program envisaged for the fabric being produced.
  • Each selection hook has two stable positions, one resulting from elastic means (springs) associated with said hook while the other is ensured by a prolonged action of the reading device.
  • the present invention intends to remedy, in order to allow the production of a balance dobby of the synchronized type which is of simple and reliable construction.
  • the invention essentially consists in associating with each of the selection hooks an individual retaining member subjected to elastic return means and clean, under the effect of an action fleetingly exerted by the reading device on said retaining member and / or on the hook itself, to immobilize the latter at one or the other of the two usual stable operating positions.
  • the retaining member which is provided with each of the hooks for selecting the dobby actually plays the role of an active memory which ensures that said hook is maintained in the position which has been assigned to it and which consequently dispenses with the need for prolonged action of the reading device.
  • the construction of the latter is therefore considerably simplified, a fleeting action or impulse exerted in both directions of operation of the dobby on one and the other of the two selection hooks associated with each balance is obviously easier to achieve than prolonged action.
  • electromagnetic type reading devices can be used, capable of easily supplying fugitive pulses.
  • FIG. 1 schematically shows in 1 one of the heald frames provided on the loom associated with the dobby considered.
  • This frame 1 is connected, for example by a cable 2, to a lever or half-balance 3 on which a balance 4 is articulated provided at its ends with coupling hooks 5 articulated at 6.
  • a balance 4 is articulated provided at its ends with coupling hooks 5 articulated at 6.
  • a cross member or pusher 7 that a rocker 8 drives with an oscillating movement, in synchronism with the movement of the weft pass member of the loom and the leaf thereof.
  • each selection hook 10 comprises, in addition to a main body designated by the reference 10, a retaining member or pawl arranged so as to form a memory for immobilizing the hook 10 corresponding either to the "out" position for which its beak is disposed on the path of the beak of the coupling hook 5 (case of the upper hook 10 in FIG. 1), or in the "eclipsed” position for which the aforementioned beaks cannot cooperate with each other (case of lower hook 10).
  • each retaining member is constituted by a finger 12 which under the effect of a spring slides in a small cylinder fixed to the frame of the dobby, so that its free end comes elastically to engage in one or the other of two flared depressions 10a practiced side by side in the edge of the body 10. It will also be observed that it has two heels 10b arranged on either side of the pivot axis 11 and oriented in the direction of the reading device 9, and it is against one or the other of these heels 10b that the movable members of said come to act device (moving parts which have been shown in the form of arrows 9a).
  • the action exerted by the device 9 on the heels 1 O b can be fleeting, that is to say formed by a simple pulse without any duration, because the finger 12 ensures the retention of the body 10 of the selection hook considered at the position to which said body has been brought by the mobile thrust members 9a.
  • the device 9 is thus capable of ensuring the control of the two selection hooks of each actuating element of the dobby, in either of the two directions of operation (weaving or unweaving), without it being necessary to have recourse to a delicate and complicated construction, and this as a result of the simply fleeting nature of the action of the organs 9a on the heels 10b.
  • Fig. 2 illustrates an alternative embodiment according to which each selection hook, here referenced 13, is associated with a retaining member constituted by a tilting pawl 14 carried by a fixed axis 15. Under the effect of a spring 16, the spout 14a of this pawl 14 cooperates with one or the other of two recesses 13a formed on the edge facing the body of the hook 13 in order to immobilize the latter in one or the other of two orientations different angles.
  • the movable members of the reading device act fleetingly alternately on a heel 13b of the body of the hook 13, and on a heel 14b of the pawl 14.
  • the body of the hook 13 rocks under the effect elastic means constituted by a spring 17.
  • Fig. 3 shows an embodiment very close to that according to FIG. 2.
  • the two springs 16 and 17 are replaced by a single spring referenced 18, the ends of which are respectively attached to the body of the hook 13 and to the pawl 14.
  • the operation is otherwise identical.
  • the member which ensures the elastic retention of the hook here referenced 19, in either of the two stable operating positions thereof, is in the form of an elastically deformable blade 20 clamped in the longitudinal direction between a support 19a of the body of the hook 19 and a fixed support 21, so as to play the role of a compression spring.
  • this blade 20 tends to tilt the hook 19 to bring it to one or the other of two positions for which the points 11,19a and 21 are not in alignment.
  • the stability of the positions is ensured by two fixed stops 22; as in fig. 1 the fleeting action of the reading device is selectively exerted on one or the other of two heels 19b provided on the body of the hook 19 on either side of the tilting axis 11.
  • this member or memory can in particular be constituted by a tilting pawl 23 which is articulated on a transverse axis 24a directly carried by the body of the hook 24; the spout 23a of this pawl 23, permanently biased by a spring 25, cooperates with two recesses 26a formed in the edge opposite a fixed part 26, the fugitive action of the reading device being selectively exercised against one or the other of two heels 23b and 24b respectively provided on said pawl 23 and on the body of the hook 24.
  • the invention is applicable to dobbies of the type with "pulled" scales in which the selection hooks are carried by a beam driven by the trade of an oscillating movement, this beam taking the place of the rocker 8 of the embodiment illustrated in fig. 1, corresponding to the case of a dobby with "pushed" scales.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Buckles (AREA)
  • Catching Or Destruction (AREA)

Description

La présente invention est relative aux ratières du type à balances utilisées pour la formation de la foule sur les métiers à tisser et elle concerne plus particulièrement l'agencement des crochets de sélection interposés dans ces mécaniques entre chaque balance et le dispositif de lisage.The present invention relates to dobbies of the type with scales used for training the crowd on the weaving looms and it relates more particularly to the arrangement of the selection hooks interposed in these machines between each balance and the reading device.

On sait que dans les ratières de ce type (voir DE-A- 1 915796), chacune des balances est pourvue à ses extrémités de deux crochets d'attelage qui sont destinés à coopérer avec deux crochets de sélection commandés par le dispositif de lisage en fonction du programme d'armure ou dessin envisagé pour le tissu en cours de réalisation. Chaque crochet de sélection comporte deux positions stables, l'une résultant de moyens elastiques (ressorts) associés audit crochet tandis que l'autre est assurée par une action prolongée du dispositif de lisage. Un tel système fonctionne de manière entièrement satisfaisante pour ce qui est des ratières usuelles.We know that in the dobbies of this type (see DE-A- 1 915796), each of the scales is provided at its ends with two coupling hooks which are intended to cooperate with two selection hooks controlled by the reading device in function of the weave or design program envisaged for the fabric being produced. Each selection hook has two stable positions, one resulting from elastic means (springs) associated with said hook while the other is ensured by a prolonged action of the reading device. Such a system works entirely satisfactorily with regard to the usual dobbies.

Il n'en va pas en revanche de même lorsqu'on désire réaliser des ratières dites "synchronisées", c'est-à-dire susceptibles de fonctionner aussi bien en marche arrière (détissage) qu'en marche avant (tissage). En effet, si les moyens elastiques sont aptes à assurer dans un sens comme dans l'autre l'une des deux positions stables de chaque crochet de sélection, par contre le maintien de l'action prolongée du dispositif de lisage en vue de l'obtention de l'autre position stable du crochet supérieur comme du crochet inférieur lors du fonctionnement en marche arrière entraîne une grande complexité dans la construction du dispositif précité. Or l'on comprend que cette complexité se fait au détriment des performances, de la fiabilité et du coût du dispositif de lisage.On the other hand, the same does not apply when one wishes to make so-called "synchronized" dobbies, that is to say capable of functioning both in reverse (weaving) and in forward (weaving). Indeed, if the elastic means are capable of ensuring in one direction as in the other one of the two stable positions of each selection hook, on the other hand, maintaining the prolonged action of the reading device in view of the obtaining the other stable position of the upper hook as the lower hook during reverse operation results in great complexity in the construction of the aforementioned device. Now we understand that this complexity is at the expense of performance, reliability and cost of the reading device.

C'est à cet inconvénient qu'entend remédier la présente invention, afin de permettre la réalisation d'une ratière à balances du type synchronisé qui soit de construction simple et fiable.It is to this drawback that the present invention intends to remedy, in order to allow the production of a balance dobby of the synchronized type which is of simple and reliable construction.

L'invention consiste essentiellement à associer à chacun des crochets de sélection un organe individuel de retenue soumis à des moyens élastiques de rappel et propre, sous l'effet d'une action exercée fugitivement par le dispositif de lisage sur ledit organe de retenue et/ou sur le crochet lui-même, à immobiliser ce dernier à l'une ou l'autre des deux positions stables usuelles de fonctionnement.The invention essentially consists in associating with each of the selection hooks an individual retaining member subjected to elastic return means and clean, under the effect of an action fleetingly exerted by the reading device on said retaining member and / or on the hook itself, to immobilize the latter at one or the other of the two usual stable operating positions.

On comprend que l'organe de retenue dont est doté chacun des crochets de sélection de la ratière joue en fait le rôle d'une mémoire active qui assure le maintien dudit crochet à la position qui lui a été affectée et qui dispense en conséquence de la nécessité d'une action prolongée du dispositif de lisage. La construction de ce dernier est donc considérablement simplifiée, une action fugitive ou impulsion exercée dans les deux sens de fonctionnement de la ratière sur l'un et l'autre des deux crochets de sélection associés à chaque balance étant évidemment plus aisée à réaliser qu'une action prolongée. En particulier on peut avoir recours à des dispositifs de lisage du type électromagnétique, susceptibles de fournir facilement des impulsions fugitives.It is understood that the retaining member which is provided with each of the hooks for selecting the dobby actually plays the role of an active memory which ensures that said hook is maintained in the position which has been assigned to it and which consequently dispenses with the need for prolonged action of the reading device. The construction of the latter is therefore considerably simplified, a fleeting action or impulse exerted in both directions of operation of the dobby on one and the other of the two selection hooks associated with each balance is obviously easier to achieve than prolonged action. In particular, electromagnetic type reading devices can be used, capable of easily supplying fugitive pulses.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer:

  • Fig. 1 est une coupe transversale schématique montrant l'agencement général de l'un des éléments d'actionnement d'une ratière à balances équipée de crochets de sélection établis conformément à l'invention.
  • Fig. 2 à 5 sont des coupes transversales partielles à plus grande échelle illustrant quatre variantes de réalisation d'un crochet de sélection.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is a schematic cross section showing the general arrangement of one of the actuating elements of a dobby with scales equipped with selection hooks established in accordance with the invention.
  • Fig. 2 to 5 are partial cross sections on a larger scale illustrating four alternative embodiments of a selection hook.

En fig. 1 on a schématiquement représenté en 1 l'un des cadres de lisses prévus sur le métier à tisser associé à la ratière considérée. Ce cadre 1 est relié, par exemple par un câble 2, à un levier ou demi-balancier 3 sur lequel s'articule une balance 4 pourvue à ses extrémités de crochets d'attelage 5 articulés en 6. Contre le talon arrière de chaque crochet 6 vient agir une traverse ou poussoir 7 qu'une bascule 8 anime d'un mouvement oscillant, en synchronisme avec le déplacement de l'organe passe-trame du métier et du battant de celui-ci.In fig. 1 schematically shows in 1 one of the heald frames provided on the loom associated with the dobby considered. This frame 1 is connected, for example by a cable 2, to a lever or half-balance 3 on which a balance 4 is articulated provided at its ends with coupling hooks 5 articulated at 6. Against the rear heel of each hook 6 acts a cross member or pusher 7 that a rocker 8 drives with an oscillating movement, in synchronism with the movement of the weft pass member of the loom and the leaf thereof.

Cet agencement est classique et ne nécessite donc aucune description détaillée. Il suffira de rappeler qu'entre les crochets d'attelage 5 de chaque balance 4 et le dispositif de lisage de la ratière schématisé en 9, sont interposés deux crochets de sélection 10 articulés sur des axes fixes 11. Chacun de ces crochets de sélection 10 est commandé par le dispositif de lisage 9 pour venir, au moment opportun déterminé par le programme d'armure qui équipe ledit dispositif, se disposer sur le trajet oscillant du crochet d'attelage 5 correspondant ou au contraire se dissocier de celui-ci, en actionnant ainsi, en combinaison avec la commande du crochet 10 opposé, le demi-balancier 3 associé au cadre de lisses 1.This arrangement is conventional and therefore does not require any detailed description. It will suffice to recall that between the coupling hooks 5 of each balance 4 and the dobby reading device shown diagrammatically at 9, are interposed two selection hooks 10 articulated on fixed axes 11. Each of these selection hooks 10 is controlled by the reading device 9 to come, at the appropriate time determined by the armor program which equips said device, to be placed on the oscillating path of the corresponding coupling hook 5 or, on the contrary, to dissociate from it, by thus operating, in combination with the control of the opposite hook 10, the half-balance 3 associated with the heald frame 1.

Suivant l'invention chaque crochet de sélection 10 comprend, outre un corps principal désigné par la référence 10, un organe de retenue ou cliquet agencé de manière à former mémoire pour assurer l'immobilisation du crochet 10 correspondant soit à la position "sortie" pour laquelle son bec est disposé sur le trajet du bec du crochet d'attelage 5 (cas du crochet 10 supérieur en fig. 1), soit à la position "éclipsée" pour laquelle les becs précités ne peuvent coopérer l'un avec l'autre (cas du crochet 10 inférieur).According to the invention each selection hook 10 comprises, in addition to a main body designated by the reference 10, a retaining member or pawl arranged so as to form a memory for immobilizing the hook 10 corresponding either to the "out" position for which its beak is disposed on the path of the beak of the coupling hook 5 (case of the upper hook 10 in FIG. 1), or in the "eclipsed" position for which the aforementioned beaks cannot cooperate with each other (case of lower hook 10).

En fig. 1 chaque organe de retenue est constitué par un doigt 12 qui sous l'effet d'un ressort coulisse dans un petit cylindre fixé au bâti de la ratière, de façon à que son extrémité libre vienne élastiquement s'engager dans l'une ou l'autre de deux dépressions évasées 10a pratiquées côte à côte dans le bord du corps 10. On observera par ailleurs que celui-ci présente deux talons 10b disposés de part et d'autre de l'axe de pivotement 11 et orientés en direction du dispositif de lisage 9, et c'est contre l'un ou l'autre de ces talons 10b que viennent agir les organes mobiles dudit dispositif (organes mobiles qu'on a figurés sous la forme de flèches 9a).In fig. 1 each retaining member is constituted by a finger 12 which under the effect of a spring slides in a small cylinder fixed to the frame of the dobby, so that its free end comes elastically to engage in one or the other of two flared depressions 10a practiced side by side in the edge of the body 10. It will also be observed that it has two heels 10b arranged on either side of the pivot axis 11 and oriented in the direction of the reading device 9, and it is against one or the other of these heels 10b that the movable members of said come to act device (moving parts which have been shown in the form of arrows 9a).

On conçoit que l'action exercée par le dispositif 9 sur les talons 1 Ob peut être fugitive, c'est-à-dire formée par une simple impulsion sans aucune durée, du fait que le doigt 12 assure la retenue du corps 10 du crochet de sélection considéré à la position à laquelle ledit corps a été amené par les organes mobiles de poussée 9a. Le dispositif 9 est ainsi susceptible d'assurer la commande des deux crochets de sélection de chaque élément d'actionnement de la ratière, dans l'un comme l'autre des deux sens de fonctionnement (tissage ou détissage), sans qu'il soit nécessaire d'avoir recours à une construction délicate et compliquée, et ce par suite du caractère simplement fugitif de l'action des organes 9a sur les talons 10b.It is understood that the action exerted by the device 9 on the heels 1 O b can be fleeting, that is to say formed by a simple pulse without any duration, because the finger 12 ensures the retention of the body 10 of the selection hook considered at the position to which said body has been brought by the mobile thrust members 9a. The device 9 is thus capable of ensuring the control of the two selection hooks of each actuating element of the dobby, in either of the two directions of operation (weaving or unweaving), without it being necessary to have recourse to a delicate and complicated construction, and this as a result of the simply fleeting nature of the action of the organs 9a on the heels 10b.

Fig. 2 illustre une variante de réalisation suivant laquelle à chaque crochet de sélection, ici référencé 13, est associé un organe de retenue constitué par un cliquet basculant 14 porté par un axe fixe 15. Sous l'effet d'un ressort 16, le bec 14a de ce cliquet 14 vient coopérer avec l'un ou l'autre de deux décrochements 13a ménagés sur le bord en vis-à-vis du corps du crochet 13 afin d'immobiliser ce dernier à l'une ou l'autre de deux orientations angulaires différentes.Fig. 2 illustrates an alternative embodiment according to which each selection hook, here referenced 13, is associated with a retaining member constituted by a tilting pawl 14 carried by a fixed axis 15. Under the effect of a spring 16, the spout 14a of this pawl 14 cooperates with one or the other of two recesses 13a formed on the edge facing the body of the hook 13 in order to immobilize the latter in one or the other of two orientations different angles.

Dans ce cas, les organes mobiles du dispositif de lisage agissent de manière fugitive alternativement sur un talon 13b du corps du crochet 13, et sur un talon 14b du cliquet 14. Dans ce dernier cas, le corps du crochet 13 bascule sous l'effet de moyens élastiques constitués par un ressort 17.In this case, the movable members of the reading device act fleetingly alternately on a heel 13b of the body of the hook 13, and on a heel 14b of the pawl 14. In the latter case, the body of the hook 13 rocks under the effect elastic means constituted by a spring 17.

Fig. 3 montre un forme de réalisation très voisine de celle suivant fig. 2. Les deux ressorts 16 et 17 sont remplacés par un ressort unique référencé 18, dont les extrémités sont respectivement attachées au corps du crochet 13 et au cliquet 14. Le fonctionnement est autrement identique.Fig. 3 shows an embodiment very close to that according to FIG. 2. The two springs 16 and 17 are replaced by a single spring referenced 18, the ends of which are respectively attached to the body of the hook 13 and to the pawl 14. The operation is otherwise identical.

Dans la variante illustrée en fig. 4, l'organe qui assure la retenue élastique du crochet, ici référencé 19, à l'une et l'autre des deux positions stables de fonctionnement de celui-ci, se présente sous la forme d'une lame élastiquement déformable 20 serrée dans le sens longitudinal entre un appui 19a du corps du crochet 19 et un appui fixe 21, de façon à jouer le rôle d'un ressort de compression.In the variant illustrated in FIG. 4, the member which ensures the elastic retention of the hook, here referenced 19, in either of the two stable operating positions thereof, is in the form of an elastically deformable blade 20 clamped in the longitudinal direction between a support 19a of the body of the hook 19 and a fixed support 21, so as to play the role of a compression spring.

On comprend que cette lame 20 tend à faire basculer le crochet 19 pour l'amener à l'une ou l'autre de deux positions pour lesquelles les points 11,19a et 21 ne se trouvent pas en alignement. La stabilité des positions est assurée par deux butées fixes 22; comme en fig. 1 l'action fugitive du dispositif de lisage s'exerce sélectivement sur l'un ou l'autre de deux talons 19b prévus sur le corps du crochet 19 de part et d'autre de l'axe de basculement 11.It is understood that this blade 20 tends to tilt the hook 19 to bring it to one or the other of two positions for which the points 11,19a and 21 are not in alignment. The stability of the positions is ensured by two fixed stops 22; as in fig. 1 the fleeting action of the reading device is selectively exerted on one or the other of two heels 19b provided on the body of the hook 19 on either side of the tilting axis 11.

On conçoit qu'on pourrait imaginer d'autres formes de réalisation pour l'organe de retenue ou "mémoire" associé à chaque crochet de sélection. Comme on l'a illustré en fig. 5, cet organe ou mémoire peut notamment être constitué par un cliquet basculant 23 qui est articulé sur un axe transversal 24a directement porté par le corps du crochet 24; le bec 23a de ce cliquet 23, sollicité en permanence par un ressort 25, coopère avec deux décrochements 26a ménagés dans le bord en vis-à-vis d'une partie fixe 26, l'action fugitive du dispositif de lisage s'exerçant sélectivement contre l'un ou l'autre de deux talons 23b et 24b respectivement prévus sur ledit cliquet 23 et sur le corps du crochet 24.It is understood that one could imagine other embodiments for the retaining member or "memory" associated with each selection hook. As illustrated in fig. 5, this member or memory can in particular be constituted by a tilting pawl 23 which is articulated on a transverse axis 24a directly carried by the body of the hook 24; the spout 23a of this pawl 23, permanently biased by a spring 25, cooperates with two recesses 26a formed in the edge opposite a fixed part 26, the fugitive action of the reading device being selectively exercised against one or the other of two heels 23b and 24b respectively provided on said pawl 23 and on the body of the hook 24.

Il va de soi que l'invention est applicable aux ratières du type à balances "tirées" dans lesquelles les crochets de sélection sont portés par un fléau animé par le métier d'un mouvement oscillant, ce fléau tenant lieu de la bascule 8 de la forme de réalisation illustrée en fig. 1, correspondant au cas d'une ratière à balances "poussées".It goes without saying that the invention is applicable to dobbies of the type with "pulled" scales in which the selection hooks are carried by a beam driven by the trade of an oscillating movement, this beam taking the place of the rocker 8 of the embodiment illustrated in fig. 1, corresponding to the case of a dobby with "pushed" scales.

Claims (8)

1. Dobby for weaving loom of the type comprising a series of double swinging levers actuated by selection hooks placed under the dependence of a programmed reading device, each selection hook being adapted to take two stable positions with respect to one of the two coupling hooks borne by the ends of each double swinging lever, characterized in that each of the selection hooks comprises, in addition to a principal swinging body (10, 13 or 19), an individual retaining member (12, 14 or 20) arranged so as to act elastically on the body which is associated therewith in order to maintain the latter in that of the two positions to which it was brought by an action or impulse exerted in fugitive manner by the reading device (9).
2. Dobby according to Claim 1, characterized in that each retaining member is constituted by a sliding finger (12) associated with independent elastic means for engaging in one or the other of two adjacent depressions (10a) made in the opposite edge of the body (10) of the corresponding selection hook.
3. Dobby according to Claim 2, characterized in that the body (10) of the selection hook comprises two heels (10b) disposed on either side of the pivot axis (11) of said hook to cooperate with the mobile members (9a) of the reading device (9).
4. Dobby according to Claim 1, characterized in that each retaining member is constituted by a rocking pawl (14) of which the nose element (14a) is adapted to cooporate, under the effect of elastic means (16), with one or the other of two recesses (13a) made in thw edge of the body (13) of the hook, which body is itself subjected to the action of elastic means (17).
5. Dobby according to Claim 4, characterized in that the pawl (14) and the body (19) of the hook are urged by common elastic means (18).
6. Dobby according to Claim 4, characterized in that the mobile members (9a) of the reading device acting selectively on a heel (13b) of the hook and on a heel (14b) of the rocking pawl (14).
7. Dobby according to Claim 1, characterized in that each retaining member is constituted by an elastic blade (20) compressed longitudinally between the body (19) of the hook and a fixed point (21) so that, under the effect of a fugitive action or impulse exerted selectively by the reading device (9) on one or the other of two heels (19b) of the above-mentioned body, the latter rocks until it bears against a corresponding fixed stop (22).
8. Dobby according to Claim 1, characterized in that each retaining member is formed by a rocking pawl (23) which is coupled to the body (24) of the hook and which, under the action of elastic means (25), cooperates with one or the other of two recesses (26a) made in a part (26) outside the hook.
EP84420051A 1983-03-22 1984-03-19 Loom dobbies Expired EP0124450B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8304883 1983-03-22
FR8304883A FR2543172B1 (en) 1983-03-22 1983-03-22 IMPROVEMENTS ON BALANCE RATIERS FOR WEAVING

Publications (2)

Publication Number Publication Date
EP0124450A1 EP0124450A1 (en) 1984-11-07
EP0124450B1 true EP0124450B1 (en) 1986-06-11

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EP84420051A Expired EP0124450B1 (en) 1983-03-22 1984-03-19 Loom dobbies

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US (1) US4557298A (en)
EP (1) EP0124450B1 (en)
JP (1) JPS59179839A (en)
DE (1) DE3460213D1 (en)
ES (1) ES8500352A1 (en)
FR (1) FR2543172B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61637A (en) * 1984-06-11 1986-01-06 村田機械株式会社 Reading apparatus in dobby machine
FR2609476B1 (en) * 1987-01-09 1990-12-07 Staubli Sa Ets IMPROVEMENTS ON NEGATIVE RATIERS OF THE OSCILLATING BALANCE TYPE
FR2647124B1 (en) * 1989-05-19 1991-07-12 Staubli Sa Ets NEGATIVE RATIERE WITH OSCILLATING SCALES FOR WEAVING
FR2651803B1 (en) * 1989-09-14 1991-11-08 Staubli Sa Ets DOUBLE RAISED DRAWER OF THE DRAWN BALANCE TYPE FOR WEAVING MACHINES.
US7475708B2 (en) * 2004-11-17 2009-01-13 Groz-Beckert Kg Shaft drive for heald shafts of weaving machines

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US2644488A (en) * 1947-09-20 1953-07-07 Sulzer Ag Shedding mechanism for looms
CH317075A (en) * 1953-01-26 1956-11-15 Staeubli Geb & Co Device for locking the draw hooks with the knives on a dobby
US3140731A (en) * 1962-04-17 1964-07-14 Wisconsin Wire Works Loom with a pirnless shuttle
FR1503816A (en) * 1966-10-07 1967-12-01 Staubli Geb & Co Double-lift dobby skills
CH470507A (en) * 1967-03-03 1969-03-31 Staeubli Geb & Co Shedding device for looms
CH501073A (en) * 1968-04-02 1970-12-31 Staeubli Geb & Co Dobby
DE1760849C2 (en) * 1968-07-10 1974-07-18 Johann Kaiser Kg, Maschinenfabrik Und Eisengiesserei, 8580 Bayreuth Counter pull machine, type Hattersley, with controlled locking knives
CH620477A5 (en) * 1976-01-30 1980-11-28 Staeubli Ag

Also Published As

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FR2543172A1 (en) 1984-09-28
EP0124450A1 (en) 1984-11-07
ES530285A0 (en) 1984-11-01
ES8500352A1 (en) 1984-11-01
FR2543172B1 (en) 1985-10-25
JPH0320499B2 (en) 1991-03-19
JPS59179839A (en) 1984-10-12
US4557298A (en) 1985-12-10
DE3460213D1 (en) 1986-07-17

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