EP0124450B1 - Perfectionnements aux ratières à balances pour métiers à tisser - Google Patents

Perfectionnements aux ratières à balances pour métiers à tisser 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
Authority
EP
European Patent Office
Prior art keywords
hook
reading device
selection
retaining member
dobby
Prior art date
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
Application number
EP84420051A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0124450A1 (fr
Inventor
Jean-Paul Froment
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0124450A1 publication Critical patent/EP0124450A1/fr
Application granted granted Critical
Publication of EP0124450B1 publication Critical patent/EP0124450B1/fr
Expired legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Buckles (AREA)
  • Catching Or Destruction (AREA)
EP84420051A 1983-03-22 1984-03-19 Perfectionnements aux ratières à balances pour métiers à tisser Expired EP0124450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8304883 1983-03-22
FR8304883A FR2543172B1 (fr) 1983-03-22 1983-03-22 Perfectionnements aux ratieres a balances pour metiers a tisser

Publications (2)

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

Family

ID=9287207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84420051A Expired EP0124450B1 (fr) 1983-03-22 1984-03-19 Perfectionnements aux ratières à balances pour métiers à tisser

Country Status (6)

Country Link
US (1) US4557298A (enrdf_load_stackoverflow)
EP (1) EP0124450B1 (enrdf_load_stackoverflow)
JP (1) JPS59179839A (enrdf_load_stackoverflow)
DE (1) DE3460213D1 (enrdf_load_stackoverflow)
ES (1) ES530285A0 (enrdf_load_stackoverflow)
FR (1) FR2543172B1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61637A (ja) * 1984-06-11 1986-01-06 村田機械株式会社 ドビ−機における読取装置
FR2609476B1 (fr) * 1987-01-09 1990-12-07 Staubli Sa Ets Perfectionnements aux ratieres negatives du type a balances oscillantes
FR2647124B1 (fr) * 1989-05-19 1991-07-12 Staubli Sa Ets Ratiere negative a balances oscillantes pour metiers a tisser
FR2651803B1 (fr) * 1989-09-14 1991-11-08 Staubli Sa Ets Ratiere a double leve du type a balances tirees pour machines a tisser.
US7475708B2 (en) * 2004-11-17 2009-01-13 Groz-Beckert Kg Shaft drive for heald shafts of weaving machines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644488A (en) * 1947-09-20 1953-07-07 Sulzer Ag Shedding mechanism for looms
CH317075A (de) * 1953-01-26 1956-11-15 Staeubli Geb & Co Einrichtung zum Verriegeln der Zughaken mit den Messern bei einer Schaftmaschine
US3140731A (en) * 1962-04-17 1964-07-14 Wisconsin Wire Works Loom with a pirnless shuttle
FR1503816A (fr) * 1966-10-07 1967-12-01 Staubli Geb & Co Perfectionnement aux ratières à double lève
CH470507A (de) * 1967-03-03 1969-03-31 Staeubli Geb & Co Fachbildungsvorrichtung für Webstühle
CH501073A (de) * 1968-04-02 1970-12-31 Staeubli Geb & Co Schaftmaschine
DE1760849C2 (de) * 1968-07-10 1974-07-18 Johann Kaiser Kg, Maschinenfabrik Und Eisengiesserei, 8580 Bayreuth Gegenzugschaftmaschine, Bauart Hattersley, mit gesteuerten Arretiermessern
CH620477A5 (enrdf_load_stackoverflow) * 1976-01-30 1980-11-28 Staeubli Ag

Also Published As

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

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