Abstract: This shedding mechanism includes a housing and a movable hook which can be retained by a selection device including at least one electromagnet (100) immobilized in the housing and which includes a ferromagnetic core (102) comprising first and second pole faces (S122, S124). The electromagnet (100) also includes a non-magnetic portion (104, 108) and a retaining lever configured to retain the movable hook. The retaining lever is pivotally mounted about an oscillation axis (A144) and includes a ferromagnetic armature (202) that interacts magnetically with the first and second pole faces. The non-magnetic portion of the electromagnet includes a surface (S144) for guiding the pivoting of the retaining lever. This guide surface cooperates with the retaining lever in a direction radial to the oscillation axis (A144) between a remote position and a contact position. The guide surface (S144) is cylindrical with a circular base, centered on the oscillation axis.

Abstract: This control system (100) for at least one Jacquard mechanism (4) for forming shed has electromechanical selection devices (20) including magnets, a primary controller (70) intended to communicate with a weaving machine (2) and including at least one memory (76) to store weave pattern data and at least one computer (74). This system also includes at least two secondary controllers (40A, 40B), each electrically connected to the primary controller (70) and each able to control a group of electromechanical selection devices (20), each secondary controller having at least one memory (46A, 46B) for storing weave pattern data, at least one computer (44A, 44B), and control units (30) for the electromagnets belonging to the electromechanical selection devices (20). This system further includes at least one intermediate controller (50) in direct electrical connection, with one of the secondary controllers (40A, 40B) and with at least two electromagnet control units (30).

Abstract: Heddle for a harness of a Jacquard weaving loom having two strands (32, 34) each equipped at a first end with a member for hooking-up the heddle to an element 10 of the harness, as well as a link (30) with an eyelet (36) for guiding a warp thread, this eyelet (36) being positioned, along a longitudinal axis (XI0) of the heddle, between both strands (32, 34). The link (30) is in a synthetic material and has two branches (52, 54) positioned on either side of the eyelet (36) along the longitudinal axis (XI0). A portion (522, 542) of each branch (52, 54) is over-molded on a second end (324, 344) of a strand (32, 34) opposite to its first end and shifted longitudinally from the eyelet (36). Further, each branch (52, 54) of the link completely surrounds the second end (324, 344) of the corresponding strand (32, 34).

Abstract: A blade for moving hooks of a Jacquard mechanism for forming a shed on a Jacquard loom wherein the blade includes at least one profile made from a composite material, having a body made of unidirectional fibers that extend in a longitudinal direction (X12) of the at least one profile and are embedded in a resin.

Abstract: A heddle for guiding a warp yarn for a loom extends lengthwise along a longitudinal axis (X4) and is formed by an assembly of a heddle body including at least one strand, and an eye including an eyelet for the passage of a warp yarn, and defining a main plane (P) wherein a first part of the strand and the eye is provided, before assembly, with an end part a second part of the strand and the eye is provided, before assembly, with a cavity for receiving the end part arranged at a longitudinal end of the second part and wherein the receiving cavity is provided with a bottom and emerges on an outside of the second part, along a transverse axis (Z4) perpendicular to the main plane (P).

Abstract: A heddle for guiding a warp yarn for a loom extends lengthwise along a longitudinal axis (X1) and has a heddle body including at least one strand and at least one eye including an eyelet for the passage of the warp yarn and wherein the heddle body includes at least one housing, the housing of the eye and the housing of the heddle body extend along a common axis (Z1) transverse to the longitudinal axis, the housing of the heddle body is across from the housing of the eye, and the housings together forming a pair of housings and wherein an assembly member made from solidified resin is positioned in the pair of housings.

Abstract: In this mechanism (7) a moving hook comprises a body (20) provided with a nose (202) for bearing against a corresponding knife (14), and a flexible blade (21) secured to the body so as to be capable of moving relative thereto and designed to interact with a retaining lever (16) belonging to the selector device. The selector lever (16) forms a ramp (313) over which a portion (214) of the resilient blade (21) slides when the hook (13) is moved in the vicinity of its top dead-center position. The ramp on which the selector lever slides is shaped in such a manner that the component (FA+FB+FC) parallel to the travel direction (X-X?) of the moving hook (13) of the resultant of the forces (RA, RB, RC) acting on the flexible blade (21) when in contact with the ramp (313) in the vicinity of the top dead-center point of its travel and at the beginning of its downward movement (F14), is directed downwards.

Abstract: This process includes steps consisting in manufacturing an eyelet for guiding a warp yarn, making, in a threadlike element, an opening for receiving the eyelet, and placing and immobilizing the eyelet in the opening. During manufacture of the eyelet at least two projecting tabs offset from each other along its edge and perpendicularly to the principal faces of this eyelet are formed on this outer edge. During the placement of the eyelet in the opening, a part of the edge of the opening is inserted between the tabs. As a variant, the tabs can be provided on the edge of the opening.

Abstract: A device for hooking a heddle of a weaving loom of the Jacquard type to a harness cord of the loom that includes an endpiece molded on an upper end of the heddle. The endpiece including an aperture for the passage and wedging of the cord and a housing for receiving two strands of the cord. The device also includes a rigid sleeve reciprocally slidably mounted on the endpiece between a first position, in which it allows access to the aperture, and a second position, in which it covers the aperture and exerts a compressive force for constricting the aperture and blocking access to the lower end of the cord. The device may also be used for hooking one or more cords on a string.

Abstract: In this mechanism (7) a moving hook comprises a body (20) provided with a nose (202) for bearing against a corresponding knife (14), and a flexible blade (21) secured to the body so as to be capable of moving relative thereto and designed to interact with a retaining lever (16) belonging to the selector device. The selector lever (16) forms a ramp (313) over which a portion (214) of the resilient blade (21) slides when the hook (13) is moved in the vicinity of its top dead-center position. The ramp on which the selector lever slides is shaped in such a manner that the component (FA+FB+FC) parallel to the travel direction (X-X?) of the moving hook (13) of the resultant of the forces (RA, RB, RC) acting on the flexible blade (21) when in contact with the ramp (313) in the vicinity of the top dead-center point of its travel and at the beginning of its downward movement (F14), is directed downwards.

Abstract: This process includes steps consisting in manufacturing an eyelet for guiding a warp yarn, making, in a threadlike element, an opening for receiving the eyelet, and placing and immobilizing the eyelet in the opening. During manufacture of the eyelet at least two projecting tabs offset from each other along its edge and perpendicularly to the principal faces of this eyelet are formed on this outer edge. During the placement of the eyelet in the opening, a part of the edge of the opening is inserted between the tabs. As a variant, the tabs can be provided on the edge of the opening.

Abstract: A member for guiding harness cords of a Jacquard loom harness wherein the member is substantially planar and is provided with holes defining passages for the cords. At least one of these passages extends in a direction that is oblique with respect to a principal plane of the member. This arrangement makes it possible to reduce frictional forces undergone by the harness cords, particularly at the upper and lower edges of the holes.

Abstract: The shed forming device according to the invention for a weaving loom of Jacquard type comprises two series of knives actuated by a single input shaft animated by a continuous movement of rotation and extending between two plates which support oscillating shafts equipped with rocking levers kinematically connected to the series of knives. The input shaft is equipped, in the vicinity of each plate, with means for driving the rocking levers. The oscillating shafts extend in parallel between the plates and are each connected to the input shaft by a single rod and eccentric link, a link being respectively made in the vicinity of each plate.

Abstract: The invention concerns a device comprising rigid or semirigid shafts (120) and at least a member (200) provided with orifices (203) for the passage and direct guiding in translation and angular positioning of a shaft in its controlled rocking movements (F1). Said member (200) is mobile, with two degrees of freedom relative to the loom frame, in translation (F4), along a direction globally parallel to the direction (A–A?) of the weft yarns, and in rotation (P4), about an axis (Z1Z?1) globally parallel to the translational direction (A–A?) of the shafts. Said member (200) can be positioned (F4, P4) by the warp yarns (103) which pass through the eyelets (127) of the shafts (120) which it guides.

Abstract: Hooks for controlling movement of heddle cords in a Jacquard weaving loom are each displaced by a knife, between a position of top dead center, wherein each hook may be immobilized by a selection device, and a position of bottom dead center. Each hook includes a body provided with a catch that engages a corresponding knife and a metal blade that is relatively movable with respect to portions of the body adjacent the catch and that interacts with the selection device to selectively retain the hook in the top dead position thereof.

Abstract: The invention relates to a shedding device comprising at least one electric rotary actuator having an output shaft (11) that is designed to rotate a pinion (21) which is engaged with a rack (22), said rack being connected to a control heald (3) of a warp end (4) by means of a load transfer element (24).

Abstract: This invention relates to a heddle formed in a metal band or strip which comprises an eyelet for passage of a warp yarn and presents, over substantially the whole of a zone included between this eyelet and a first end by which it is connected to a drive means, a cross-section substantially in the shape of a Z, with two branches substantially parallel to each other.

Abstract: The shed forming device according to the invention for a weaving loom of Jacquard type comprises two series of knives actuated by a single input shaft animated by a continuous movement of rotation and extending between two plates which support oscillating shafts equipped with rocking levers kinematically connected to the series of knives. The input shaft is equipped, in the vicinity of each plate, with means for driving the rocking levers. The oscillating shafts extend in parallel between the plates and are each connected to the input shaft by a single rod and eccentric link, a link being respectively made in the vicinity of each plate.

Abstract: A member for guiding harness cords of a weaving loom harness of Jacquard type which is provided with at least two plates with holes for passage of the cords and which plates are separated by a space adapted to be supplied with gas under pressure. The holes constitute orifices for exhaust of the gas with respect to the space. The guiding members makes it possible to cool the harness cords and to clean the holes through which the harness cords pass.

Abstract: Springs associated with a harness of a weaving loom of the Jacquard type are connected on a frame of the loom by an assembly of devices each of which includes a plurality of rods each being connectable with a spring and which rods extend from a common base. Each base is provided with hooks adapted to engage with beaks of corresponding shape for mounting each device on at least one elongated section secured to the frame of the loom.