Abstract: A movable hook of a shed-forming device for a weaving loom which includes a supple tongue which is urged toward engagement with the tip of a pivotable retention hook by a spring element mounted on the movable hook. The supple tongue is engageable with the retention hook to pivot an opposite end thereof into contact with an electromagnet which is selectively controlled to either retain the retention hook or release the retention hook to subsequently engage a notch in the movable hook spaced from the tongue and thereby retain the movable hook in fixed relationship to the retention hook.

Abstract: A shed-forming device in a weaving loom which includes spaced partitions to which are mounted retention hooks controlled by electro-magnets. The electro-magnets are encased in a substantially air-tight manner between adjacent partitions. In the preferred embodiment, oppositely oriented flanges extend from the borders of each partition so as to be engagable with the flanges of adjacent partitions when the partitions are mounted in assembled relationship to thereby form substantially air-tight enclosures.

Abstract: A quick connect coupling for connecting at least one funicular element with respect to the end of a cord, particularly for those of a harness of a weaving loom, to a cord of shed-forming device of the loom, which includes an insert element associated with the cord of the shed-forming device which has at least one crosspiece to which the cord is attached and a bar located below the crosspiece. A clamp is provided for receiving the insert and has two branch elements which are secured to at least one funicular element. The branch elements have hooked free ends which are elastically articulated relative to one another toward the geometrical axis of symmetry of the clamp.

Abstract: A device for assembling a plurality of cords which includes a bushing having a bore which cooperatively receives a clamp. The bushing includes an opening through which adhesive may be introduced after the clamp is inserted within the bore of the bushing to thereby bind the cords which are initially carried by the clamp. The clamp includes two branch elements joined by a crosspiece. Each branch element includes a first outwardly directing hooked end, a second inwardly directed jaw portion and an intermediate outwardly projecting portion. The intermediate portions are yieldably compressible with respect to one another to permit the insertion of the clamp in the bore of the bushing.

Abstract: An assembly for controlling the reciprocating movement of the upper and lower frames of a shed-forming device of a weaving loom wherein on the chassis on either side of the shed-forming device two cams are provided which are each in engagement with the end of an offset lever fitted on a shaft to which is connected a balance beam. The ends of the balance beam are connected to the first ends of two connecting rods which have their other ends articulated to first and second rocking levers. The first rocking lever is split having oppositely oriented spaced arms which are separated by the second rocking lever. The first rocking lever is fitted on a pin pivoting in a bearing on the chassis. The second rocking lever is mounted to rotate about the pin of the first rocking lever and the first and second rocking levers are connected to the upper and lower frames by short and long articulated levers.

Abstract: In a weaving loom, an assembly for controlling the reciprocating movement of the upper and lower frames of the shed-forming device which assembly includes a shaft of which the ends are each associated with the ends of two connecting rods by way of eccentrics and which connecting rods are articulated on rocking levers whose arms are pivotally associated with short and long levers attached respectively to the upper and lower frames of the shed-forming device.

Abstract: A block and tackel arrangement for connecting the hooks of a shed forming device in a weaving loom with heddle or harness threads wherein the block and tackle arrangement includes an idler pulley (17) of reduced diameter which is mounted below conventional pulleys (6,8) about which different lines or cables are supported. A guide pulley (18) is provided at the base of the mechanism and the lower cable element (20) is fixed by one of its ends to a fixed point (21), extends over the idle pulley (17), the guide pulley (18) and pulley (8) with its free end carrying a collar (13a) to which is attached heddle or harness threads (15).

Abstract: A mechanism for controlling the movement of the griffe frames of shed-forming device in a weaving loom which includes a pair of levers which are pivotally mounted to the loom frame work and to one of the griffe frames in such a manner as to define a shiftable quadrilateral linkage which when reciprocated causes the griffe frame to move obliquely from a lower to a higher position to allow passage of the picks of the loom.

Abstract: A three-position weaving mechanism for a weaving loom which includes a plurality of shed-forming devices having tackle assemblies disposed in side by side relationship and wherein the lower pulleys of adjacent tackle assemblies are joined by a cord which passes over such pulleys and an intermediate idler pulley which is secured to the frame of the weaving loom.

Abstract: This invention relates to a device for forming the shed in a weaving loom, wherein the elements which constitute the system for lifting the warp yarns are, from top to bottom, an electro-magnet, two blades, two mobile hooks and a lifting beam. These elements are disposed one below the other between two vertical separating partitions constituting an assembly. A certain number of assemblies are assembled in a row so as to form a module which may be selectively inserted within the loom frame.

Abstract: This invention relates to the shed forming devices in weaving looms wherein each of the retaining hooks is in the form of an element which is pivotable about a horizontal pin with each element provided with a tail portion which is subjected to the reaction of a compression spring so that the head portion thereof lies in a rest position above the toe of a corresponding mobile hook. When the mobile hook causes a retaining hook to pivot so that its nose or head is in an outer position with respect to the toe, an electromagnet of the device may be selectively activated to retain the retaining hook in this outer position to thereby prevent the mobile hook from being restrained by the retaining hook.

Abstract: This invention is directed to improved mobile hooks for the shed forming device of weaving looms wherein the mobile hooks are disposed at each of the ends of a funicular element. Each hook includes a web bordered by a vertical heel disposed in a slideway formed by grooves made in two opposing separating partitions with the web including a toe adapted to be hooked by the curved ends of a conventional blade element which is utilized to maintain the hooks in their uppermost elevated position. The hooks further include portions which are adapted to be gripped by conventional knives as the knives are moved vertically in reciprocating motion and also a push element adapted to displace the hook retaining blade against the core of an electromagnet which is used to selectively urge the retaining hook into engagement with the mobile hook when the electromagnet is activated.

Abstract: A mechanism for selecting and raising heddle hooks in a weaving loom in response to control signals delivered by a pattern reader, wherein the mechanism includes a flexible blade for each hook and further includes a catch associated with each blade and operable to connect the blade with the hook thereby to select the hook, and the mechanism further including an electro magnetic coil operative for selecting each blade and catch in response to said control signals delivered to a shift register whose stages energize the coils, the hooks being supported by one plate and the selecting mechanisms being supported by another plate, the plates reciprocating toward and away from each other in synchronism with the loom motion.

Abstract: In a weaving system in which the selection of the hooks is effected by rotation of their shanks so as to present their nose elements to the blades of the gripper frames or, on the contrary, to retract them, each hook comprises at its end a flat eyelet which, when it returns into its low rest position, engages in a depression with elliptic inlet in a bottom board and which tends to return it to the correct angular orientation corresponding to this position. In addition, to each eyelet is attached an elastic blade which passes through a slit in a guiding board and which acts in the manner of a return torsion spring to complete the effect of the depression.

Abstract: A coupling device for coupling a loom shaft to the shaft of a weft selecting device in a weaving loom, the device comprising two opposed discs having mutually engaging teeth which automatically respond to reversal in direction of rotation of the loom shaft to introduce a desired phase shift between the loom shaft and the weft shaft, the coupling device having automatic means for locking the disc teeth after each reversal in direction of the loom to maintain the newly phase-shifted mutual orientation of the discs.