Abstract: The present invention relates to a method of weaving a multi-colored web (5,6,7) with various colored wrap threads (1,2,3,) and weft threads (4). According to the invention wrap threads having preferably three different colors, namely blue, red, and yellow, are used, in regular series adjacent to each other. One of these colors is emphasized locally by the corresponding admixture into the front side of the web, which is being woven, in order to strengthen the shade. By the corresponding admixture of two or more colors new shades are obtained. The invention also relates to a multi-colored web (5,6,7), produced according to this method as well as to a wrap thread arrangement (1,2,3), used in or for the method and web respectively.

Abstract: A solenoid unit for a weaving device is described and which includes a frame; a plurality of eyelets mounted on the frame and individually movable with respect to the frame; a support member releasably coupled to the frame; and a plurality of solenoids mounted on the support member, and wherein each solenoid controls the movement of at least one eyelet.

Abstract: A weaving device is described which includes a frame and an eyelet movably mounted thereto. A solenoid is also mounted to the frame and produces a magnetic field when energized. A latch is mounted on the frame for movement thereon to affect movement of the eyelet. A contact member is rotatably mounted to the latch and is magnetically attracted to the solenoid when energized.

Abstract: A thread clamping device, particularly for the figuring weft threads on jacquard machines, in which figuring weft threads, e.g. those on jacquard looms, are only picked from time to time corresponding to the figured form of the woven jacquard fabric, with the figuring weft threads being held under tension and released as required, during their stationary period, by thread clamping devices which are controlled via the harness thread of the associated figuring weft cord heald.

Abstract: Housings to enclose winding actuators for the vertical control of harness threads of a weaving mechanism are arranged in rows and/or columns to form at least one panel positioned in the upper portion of a weaving loom.

Abstract: A device for selectively controlling oscillating transverse movement of a yarn in a loom features the integration of yarn selection mechanisms into sinkers that are connected to the loom and driven simultaneously. The yarn selection mechanisms are associated with controlled actuators for individually actuating one or more of the yarn selection mechanisms to selectively engage yarns for making specific patterns.

Abstract: A process and apparatus for weaving a fabric with a three dimensional bulging zone, which is formed by increasing the density of the crossing points of the warp and weft threads so as to naturally impart a bulging zone in the fabric. The density is changed by changing the number of threads and/or changing the weave pattern. The lengths of the warp threads can also be increased in the bulging zone. In a preferred embodiment, the threads include a material which is settable by thermal or chemical treatment, and such that upon being set a three dimensional rigid matrix is formed which includes the non-settable threads as a reinforcement. The apparatus for carrying out the process takes the form of a loom having the capability of individually drawing off selected lengths of the warp threads from a warp supply, and a jacquard head for forming the weaving sheds and which has a control for changing the number of threads woven and/or the weave pattern.

Abstract: A Jacquard mechanism for creating a shed in a loom has a plurality of hooks operative to be connected, optionally via one or more other bodies, to yarns in a loom. The hooks are movable between a first position and a second position. A griffe is provided, the griffe being movable along a path so as to engage the hooks when the hooks are in the first position. The Jacquard mechanism also has a plurality of solenoids, each solenoid having a plunger operative to directly engage a hook. Movement of the plunger causes an associated hook to move to the second position wherein it will not be engaged by the griffe as it moves along the path.

Abstract: In a jacquard system for forming the shed in a weaving machine, vertical reciprocating blades of griffe frames are controlled by concentric shafts driven by a single cam assembly connected to the input shaft driven by the drive shaft of the weaving machine. Each of the concentric shafts include radially extending levers which are connected to control the reciprocating movement of the blades.

Abstract: A method and apparatus utilizing an elongate, flexible member operatively attached to rods that move up and down, on a Jacquard loom. A latch control mechanism is provided for latching said elongate, flexible member in a fixed position by applying pressure thereto by vacuum or pressure. This latching of the rod in an upper position creates a shed whereby filling yarns can be passed through to create Jacquard fabric. The pressure can be applied against the elongate, flexible member by filling sealed elongate, elastomeric member with pressured gas. In addition, the pressure can be applied against the elongate, flexible member by activating a dimensionally alterable, electric element that presses against the elongate, flexible member.

Abstract: In a shed-forming system of a weaving loom the drive shaft thereof is driven by an independent motor with controlled variable input which will depend upon the weaving program, the current forces on the components of the shed-forming system and constant forces inherent in the shed-forming system operation and by a second input shaft which synchronizes the drive shaft with the principal drive shaft of the loom.

Abstract: A harness system for weaving looms wherein neck cords connected to an actuating mechanism for controlling the movement of at least one heddle are releasably connected to harness cords connected to the at least one heddle by way of collars having releasably engageable male and female portions. The harness cords pass through openings in a control member which is reciprocally moveable so as to move the collars relative to guides through which the neck cords extend from the actuating mechanism.

Abstract: The double roller elements for Jacquard machines are produced as one piece plastic carcasses each comprising a central body (60) with end plates (64, 66) integrally hinged thereto. The body has hollow spindles (88) to receive the rollers, (94) and once the rollers (94) have been placed on the hollow spindles, the plates (64, 66) are hinged to cover the rollers (94) and plugs (90) snap into the spindles (88). The cords can be snapped past the gaps between the outer peripheries of the plates (64, 66) to couple the cords to or uncouple them from the element, without unplugging the plates (64, 66) from the spindles (88).

Abstract: In a jacquard system of a weaving machine in which hooks are actuated by harness cords controlled by knives carried by belts supported on drums drivingly connected to drum disc shafts, independent motors having output shafts are provided for driving the drum disc shafts. The motors are controlled to reciprocate the movement of the belts by first sensors monitoring the rotational movement of the motor output shafts and second sensors monitoring the rotational movement of a primary drive shaft of the weaving machine.

Abstract: A mechanism for controlling the reciprocating movement of griffe frames in a weaving loom which includes four crank arms which are mounted offset angularly with respect to one another to a driving shaft associated with the loom. Two short connecting rods and two long connecting rods are connected to the four crank arms with the two short connecting rods being pivotally mounted to one of the griffe frames and the two long connecting rods being mounted to the other of the griffe frames whereby rotation of the driving shaft causes a reciprocating movement of the griffe frames.

Abstract: A mechanism for controlling the reciprocating movement of griffe frames of a weaving system including a control shaft on which first and second sets of two complementary cams are mounted in opposite angular relationship with respect to one another by approximately 180.degree.. Each cam corporates with a follower roller mounted on first and second sets of double rocker levers which are connected to two griffe frames by first and second sets of connecting rods.

Abstract: A shedding device for weaving machines including lifting knives arranged on both ends of respective knife units for joint displacement with the knife units up and down in respective mutually opposite direction, with each knife unit being connected to the device frame by a separate lever provided on one side of the knife unit and by a lever arrangement provided on another side of the knife unit, which lever arrangement has a lever and a guide rod that connects this lever with the frame or the knife unit.

Abstract: A jacquard machine having lifters controlled by electromagnets. Activated by electromagnets are lifters that, according to the weave pattern, must reside in the upper shed. The lifter is arranged between a continuously rotating lifting roll and an appropriately distanced press roller of an anchor of an electromagnet, the roller pressing the lifter to the mantle surface of the lifting roll when the electromagnet is electrically connected according to the weave pattern. Next to each lifting roll, a series of lifters are positioned. The lifting rolls are arranged so that in a vertical plane, along the width of the warp, there exists a roll matrix composed of mutually equal columns of rolls and mutually equal rows of rolls. The one-column lifting rolls together with the respective lifters, electromagnets and the respective mechanical equipment form a roll module, and two roll modules positioned along the warp compose a roll aggregate.

Abstract: A loom heald hook lifter includes a horizontal bracket, a plurality of links secured to the horizontal bracket so that the links are not pivotable relative to the horizontal bracket, and a corresponding number of blades each pivotably linked to one of the links. A first hole is defined through a lower tip of each of the links and a second hole is defined in an edge of each of the blades. The blades are respectively pivotally connected to the links by a corresponding number of pintles loosely extending through the holes in the links and frictionally engaging the holes in the blades.

Abstract: In a Jacquard system, in order to form an oblique shed necessary for the weaving of ribbon-like articles drums whose diameters decrease from one end of the system to the other are provided. The drums are used for driving the runs of funicular elements which bear the knives for actuating the hooks of the modules which house the cords for vertical control of the warp yarns. The drums are driven with oscillating movement by two longitudinal connecting rods.

Abstract: A needle selector apparatus for a Jacquard machine has drop needles and thrust needles which are supported thereby and which are horizontally and vertically movable by way of control devices. A blocking element is associated with the end of each drop needle and can selectively provide support for the end of the drop needle or permit the drop needle to drop down. The adjusting element of each blocking element is a respective piezoelectric flexural transducer which is stationarily clamped at one end. Each transducer is arranged with its longitudinal direction transversely to the longitudinal direction of the associated drop needle. The free end of each transducer is movable between the support position of lying in the path of movement of the drop needle and the drop-down position of lying outside the path of movement of the drop needle, in a plane which is transverse to the longitudinal direction of the drop needle.

Abstract: A shedding device for a textile machine contains two lifting blades (120) which move to and fro antagonistically, two traction elements (121) which can be engaged and disengaged with the lifting blades (120) and an insertion device (12) which is arranged so that the traction elements adopt a defined position with respect to the pole regions when in the lower shed position. The traction elements (121) have coupling parts (123) with hooks (126) which can be coupled with matching lifting blade parts, and stop parts (54) which co-operate with the stop board (46) for the rest position and with the lower edge of the lifting blade (120) so that they move to and fro interlocked with the traction elements (121) coupled with the blades (120).

Abstract: Apparatus for selecting and controlling the warp threads moving structure, one by one, in the operations of weaving preparation and of weaving. A plurality of pairs of selection bars are provided. The bars of each pair are provided with reciprocating lifting and lowering motions in opposition of phase to each other. Corresponding rods are received in each of the pairs of the selection bars for moving the warp threads. Corresponding devices for hooking the rods to the selection bars under the command of a control element. Corresponding electronic, logic and control circuits are provided for operating the hooking devices.

Abstract: A shed formation apparatus having increased flexibility and speed. The shed formation apparatus is comprised of a plurality of movable heddles which are connected to a plurality of heddle selectors by a first plurality of control leads. The heddle selectors are movably connected to a plurality of heddle selector controllers which include stoppers to retard the movement of the heddle selectors. A second plurality of control leads are attached to the heddle selectors. A repeat pattern output apparatus determines the movement of the second plurality of control leads and the attached heddle selectors, and selectively activates the stoppers.

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: A Jacquard system for making patterns on the selvedges of fabrics being woven in a loom which includes a hollow input shaft for controlling the vertical movement of heddle support cords. The input shaft extends through a housing and a principle drive shaft extends through and is drivingly connected to the input shaft. The housing includes clamping apparatus for its adjustment along a support beam extending parallel to the principal drive shaft.

Abstract: A shed formation apparatus which has increased flexibility and speed and finds particular application in automated reweaving of the ends of a fabric. The apparatus is generally comprised of a plurality of heddles which will control yarn movement during the shed formation. Each of the heddles has a yarn mail and at least one control lead. Each control lead is under the influence of a controller - stopper mechanism which controls heddle movement and position. The actuation of the stopping mechanism is controlled by a shed formation repeat pattern output device which determines the position of the heddle and the selection of the stopping mechanism in accordance with the repeat pattern.

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: In loom control for weaving a preselected pattern design or the like, electronically controlled electric actuators (1,10) are programmed for required operation in accordance with the pattern by a computer, each actuator (1) being connected to a warp thread (W) or to more than one such thread of the shed (S) for positive operation of the threads (W) in effecting required shed formations in weaving the pattern. A flexible connection member (2) between the actuator (1) and an eye member (3) receiving a warp thread (W) may be arranged in an endless manner for positive operation of the eye member (3) in either direction. In the case of a knitting machine each actuator is connected to one or more yarn feeders and/or to the carriage or carriages of the machine for their operation in knitting the preselected pattern.

Abstract: A loom, especially a loom equipped with a Jacquard mechanism is supported by a vibration isolating device. At least one, preferably two or four such devices are arranged in positions most effective for the vibration damping, with due regard to the center of gravity of the wrap beam and/or of the entire loom. At least one, preferably all vibration dampers are constructed to include a controllable level controlling element in the form of an air spring. The compression in the air spring is controlled in response to the spacing of a fixed point of the loom from the loom supporting surface. Thus, spacing variations between the loom and the Jacquard mechanism that could otherwise be caused due to weight changes of the loom, are eliminated or compensated, whereby the loom-Jacquard spacing is maintained constant.

Abstract: An apparatus for controlling warp threads on weaving machines, particularly suited for control of warp threads on Jacquard type machines, for example selvedge machines. Control members are arranged to control movement of a warp thread and are adapted to be moved in arcuate paths by a reciprocatable member which reciprocates repeatedly. Selectively operable members cooperate with the control members to allow the control members to reciprocate fully with the reciprocatable members or to be held in a position in which the control members either reciprocate less than the reciprocatable members or do not reciprocate at all. The control members have abutting surfaces in different planes which slide relative to each other and which permit the control members to be positioned with the abutting surfaces facing each other with a combined thickness substantially the same as the overall thickness of one of the control members.

Abstract: A shed-forming device for a textile machine which includes lift blades (e.g., 3) arranged to hookingly engage or slidably contact an associated hooking engagement element (e.g., 4) such that the hooking engagement element is either lifted into an upper shed position to effect a shed change or alternatively, is pivoted into an arrested lower shed position by the attractive force of an associated electromagnet (e.g., 5). The hooking engagement elements are arranged in pairs by flexible connecting elements (e.g., 9) which form a loop into which is disposed a roller (e.g., 12) operatively attached to a shed such as a harness (e.g., 13). A pulling force generated by the movement of the roller and harness serves to pivot or position the hooking engagement element for cooperation with the lift blades and accordingly, facilitates changing of the harness.

Abstract: A double lift, open shed Jacquard machine in which the lifting knives of two sets of lifting knives which are to be moved in opposite directions are linked at their ends to oscillating shafts by lever arrangements. The oscillating shafts are mounted in the machine frame and are pivoted via a form-locking connection to the eccentric of an eccentric gear. The rotating shaft of the eccentric gear is coupled with a driving motor. The oscillating shafts can be mounted by supports along their length in the machine frame. In this manner the masses to be moved can be substantially reduced with a simple constructional design and furthermore assembly is facilitated.

Abstract: An open shed Jacquard machine in which two hooks are connected at one end over a common pulley and can be coupled with knives when moving in opposite directions. A common electromagnet arranged between the hooks serves for control according to a pattern in a defined shed position. The electromagnet is mounted in a housing to tilt or see-saw about an axis. In the reading position each hook is mechanically moved to approach the pole of the electromagnet, in particular to abut against it.

Abstract: A Jacquard emulator for operating the pins of a Jacquard mechanism as is used in the textile industry. The emulator has a number of disks mounted on the shafts of respective stepper motors. The disks have a number of holes therein so that when the disks are brought into contact with the pins by axial movement, predetermined pins align with holes in the disk so that required patterns of pins are actuated. The stepper motors are controlled to orient the disk to vary the pattern of pins actuated as required by a desired program.

Abstract: A pulley-block drive of an open shed Jacquard mechanism is sectionally controlled by a movable suspension apparatus. Pulley bands or harness cords are attached to one of the ends of the movable suspension apparatus. The movable suspension apparatus is suspended from hooks which can engage with the knives of the jacquard machine so that the movable suspension apparatus is driven by the knife grid of the jacquard mechanism.

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: An electronic jacquard mechanism for controlling shedding motion of warps by selectively holding dropper needles by means of solenoids in accordance with command signals generated from a computer. Movable cores of the solenoids are directly fixed on one end of the dropper needles. Housings of the solenoids, including stationary cores and coils, are secured directly on a printed board associated with the computer. The solenoids can be densely arranged on the printed board corresponding to the arrangement of the dropper needles, allowing greater compactness of the mechanism.

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: A single-leg hook for a double lift open shed Jacquard machine with two sets of blades which are movable in opposite directions towards and away from each other by lift means, without crossing, a stationary set of arresting blades and a stationary hook rack, has first and second suspension projections which face in the same direction, and a support projection which points in the same direction. In one embodiment, the major, lower portion of the leg of the hook is rigid while the upper end portion is flexible, and the suspension projections are disposed at respective ends of a bar member fixed to the upper end of the hook. In another embodiment, the leg of the hook is rigid throughout and one of the suspension projections is arranged at its upper end, with the other suspension projection disposed on a resilient bar connected by an end region to the rigid leg.

Abstract: A shed forming arrangement for a loom comprises lift elements which move in opposite directions to each other, with holding members arranged on each lift element. The holding members are connected together in respective pairs by connecting members each forming a loop in which a roller is carried. The roller is operatively connected to the shed forming means of the machine. The holding members are in the form of magnet armature members and are operatively associated with selectively actuable holding magnet means, thereby to control a lift movement of the respective roller.

Abstract: It comprises a grid incorporating inclined bars (13) for bending the needles (5) so that they pass above a lateral lug (8c) of the corresponding small needle (8) provided to be flat. Each small needle comprises a fine tail (8b) guided by a perforated panel (12) on which it rests in the free state by being loaded by the needle (5) which passes through a perforation (11a) in a plate (11). The paper (9) is raised in the direction of the small needles with a view to selection.

Abstract: An arrangement is disclosed for stabilizing and reinforcing the connection between the resilient hold-down control springs and their underlying couplings in a Jacquard loom. The junction between two portions of the spring is strengthened by using a flared-out arrangement beneath an aligning comber board through which the springs pass in a vertical orientation. In this manner, the connected heddle/spring is maintained in a reliable axial position and the spring is able to function in its resilient holding-down capacity by a technique which generates reduced stress at the key point where the spring is retained.

Abstract: A double-lift open-shed Jacquard loom comprises hooks controlled by control needles, the leg of each hook having three noses thereon. The loom also has two sets of blades which are movable towards and away from each other by lift means, a stationary set of blades, and at least one hook rake. Bracing means are provided to act on the legs of the ones of said hooks which are disposed on the arresting blades in the open-shed position, to urge said hooks towards the respective lifting blade.

Abstract: A double-lift open-shed Jacquard loom comprises hooks controlled by control needles, the leg of each hook having three hook noses thereon. The loom also has two sets of blades which are movable in opposite directions towards and away from each other by lift means, and a stationary set of blades. The blades of at least one movable set are arranged pivotally about respective imaginary axes which extend in the longitudinal direction of each blades, and a pivoting means is provided for producing simultaneous parallel pivotal movement of the pivotal blades.

Abstract: An open-shed Jacquard machine comprising multiple harness cords on each side of the layer of warp yarns of a loom, and each cord provided with an eyelet through which a corresponding warp yarn passes, the shed opening system comprising multiple modules each having pulleys respectively receiving in its groove one of the harness cords, harness cord displacement mechanisms on the modules to rotate the pulleys through angles sufficient to lift the cords, the shed opening modules being arranged on the loom in series of spaced rows with their displacement mechanisms facing away from each other and their pulleys facing toward each other, and the rows being progressively offset from each other in directions parallel to the warp yarns.

Abstract: A knife construction for a double-lift open-shed Jacquard loom includes two knife boxes which are movable in opposite directions past each other. The knives of each knife box consist of a carrier member having hook plates fastened thereto and provided with spaced control hooks. Lifter members formed as flat bars controlled by main needles arranged transverse to the knives each include two main noses engageable with the control hooks of the movable knives and a holding-up nose engageable with a stationary upper-shed knife. The formation of the control hooks and the main noses in the control direction of the main needles permits movement of the lifters intermediate the control hooks of a knife.

Abstract: An improved hook for a double-lift open shed Jacquard machine, each hook having first and second oppositely facing catches and having a boss for contacting in the low position of the hook a finger of the machine to displace the hook so that one of the catches engages a gripper of one frame, the boss being so located that the hook when in low position in displaced when pressed transversely by a needle so that the other catch engages a gripper of the other frame.