BE351656A

BE351656A -

Info

Publication number: BE351656A
Authority: BE

Description

       

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  "Dispositif   d'écart ornent   des fils de la foule pour métiers à tisser sans mécanique   d'armure    
Cette invention a pour objet un dispositif applicable aux métiers tisser sans mécanique d'armure et dont le but principal est d'éviter le   frottement   des fils de la foule par leur   écartement,,   
Ce nouveau dispositif est représenté dans le dessin annexé. 



   Figure 1 en est la vue schématique de face tel   qu'il   est monté sur un métier à tisser. 



   Figure 2 est une vue de détail mon- trant comment s'opère la transmission des mouvements entre les axes supportant les lisses. 



     Selon   l'invention, on évite le frottement des fils en   imprimant     'aux   lisses un 

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 mouvement échelonné les unes par rapport aux autres, ainsi qu'il va être décrit. 



   1,2,3,4 désignent les planches ou   lisses; 5,1   5' les excentriques usuels du   métier ; 6.$   6' des poulies supportant les lisses! et   !; 11' arbre   moteur-8 8' dea poulies décentrées transmettant le mouvement; 9,9' des courroies de transmission; 10 un tambour conjugué; 
11 un arbre conduit;   12,   12' les pouliea supportant les lisses 1 et 3; 13,13' des crocheta de soutien des lis-   @   ses 1. et 3,14,14' dea ressorts de fixation de ces cro- chets 13, 13'; 15 l'arbre dea excentriques 5, 5', 16,   ;Le-'   des   câble    ou longes supportant les lisses ±, 4; 17, 17' des câbles analogues reliant les crochets 1,   13 * et   lea lisses 1 et 3. 



   Le fonctionnement est le suivant:pour réaliser l'échelonnement des mouvements entre une   pai-   re de lisses et une autre, on laisse leur mouvement normal à deux lisses qui ainsi reçoivent leur mouve- ment par l'intermédiaire des   excentriques 5    5' mon- tés sur l'arbre 15 et qui existent sur n'importe quel métier à tisser pour actionner les leviers qui por- tent les câbles   16,   16', ceux-ci en montant et   descen-   dent impriment aux   lisses 23 4   dans le sens vertical un mouvement égal qui se traduit par un mouvement gi- ratoire intermittent dans le sens de la direction de   l'arbre 1     puisque   les poulies 6, 6' sur lesquelles s'enroulent et   desquelles   se déroulent les câbles 
18,

   18' sont solidaires de cet arbre. 



   L'autre paire de lisses est actionnée par le dispositif objet de l'invention.Deux poulies de diamètre approprié correspondent à celles qui suppor- tent les lisses antérieures qui sont décentrées par 

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  "Gap device adorn shed yarns for looms without weaving mechanics
This invention relates to a device applicable to weaving looms without weaving mechanics and whose main aim is to avoid the friction of the threads of the shed by their spacing ,,
This new device is shown in the accompanying drawing.



   Figure 1 is the schematic front view as mounted on a loom.



   FIG. 2 is a detail view showing how the transmission of movements between the axes supporting the beams takes place.



     According to the invention, the friction of the son is avoided by printing 'on the heddles a

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 staggered movement relative to one another, as will be described.



   1,2,3,4 designate the boards or smooth; 5.1 5 'the usual eccentrics of the trade; 6. $ 6 'of pulleys supporting the beams! and!; 11 'motor shaft-8 8' of off-center pulleys transmitting movement; 9.9 'of the transmission belts; A conjugate drum;
11 a driven tree; 12, 12 'the pulleys supporting the rails 1 and 3; 13,13 'of the supporting hooks of the rows 1 and 3,14,14' of the fixing springs of these hooks 13, 13 '; 15 the shaft of eccentrics 5, 5 ', 16,; The cables or lanyards supporting the rails ±, 4; 17, 17 'of similar cables connecting the hooks 1, 13 * and the rails 1 and 3.



   The operation is as follows: in order to achieve the staggering of the movements between one pair of stringers and another, their normal movement is left to two stringers which thus receive their movement via the eccentrics 5 'mon- tees on the shaft 15 and which exist on any loom to actuate the levers which carry the cables 16, 16 ', these going up and down print to the heddles 23 4 in the vertical direction an equal movement which results in an intermittent gyratory movement in the direction of the direction of the shaft 1 since the pulleys 6, 6 'on which are wound and from which the cables are unwound
18,

   18 'are integral with this tree.



   The other pair of stringers is actuated by the device which is the subject of the invention. Two pulleys of suitable diameter correspond to those which support the front bars which are off-center by

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Claims

report 1 their axis * On these pulleys are fixed by means of screws of the belts 9, 9 'which wind and unwind on a drum 10 mounted on an axis 11. This provides a transmission of movement of the motor shaft l 'driven shaft 11. This movement of the shaft will be intermittent in its direction as before but with closed speeds delayed or accelerated with respect to the motor shaft - according to lengths equal to the parts of belts winding and twisting. unrolling on the corresponding eccentrics,

It follows that by placing the other pair of heddles on pulleys measuring a diameter proportional to that of the pulleys which support the front ones on the motor shaft 11, a differentiation is obtained in the ascent and descent speeds. results in a staggering of the positions of the beams from one pair to another and consequently by a perfect and asymmetrical spacing of the threads of the shed -He avoids their mutual friction and their breakage * The beams actuated by this new dis- positive are supported by their lower part by means of cables 17, 17 fitted with appropriate members for fixing to the banquine or to the ground such as hooks 13, 13 'and springs 14,14' intended to bring the rails to their position ,

lower when the belts are unwinding * - R E S U M E - The invention relates to a device applicable to weaving looms without weaving mechanics for separating the fila from the shed and preventing them from rubbing, this device being characterized in that it is on the shaft. <Desc / Clms Page number 4> motor are arranged off-center pulleys tale thanks to ropes or belts winding or unwinding simultaneously relative to a drum, transmitting to a driven shaft a reciprocating movement and speeds delayed or advanced relative to the motor shaft of lengths equal to the parts of the belt which simultaneously wind or unwind on said off-center pulleys, this device also including the following characteristics:

a) On the driven shaft are mounted pulleys supporting the heddles of a diameter suitable for the pulleys supporting the heddles of the motor shaft, which actuate a pair of heddles which move up and down in the direction. vertical accelerated or delayed relative to the other pair of healds actuated by the common and current mechanism of the loom with the same speed difference as that of the supporting shafts, which achieves a staggering of the positions from one pair of stringers to another and thereby the spacing of the threads of the fuller b)

The mechanism preferably consists of hooks for attaching the cables or lower lanyards of heddles actuated by the new device and in springs fixed to the bench of the loom or to the ground and intended to return the heddles to their lower position when the belts pulleys that correspond to them unroll. <Desc / Clms Page number 5> c) The off-center pulleys can be substituted with suitable oxides and varied circumference according to the speed ratio to be obtained.