Abstract: A warp knitted fabric includes a non-elastic filament yarns threaded from a first guide bar and knitted in a 1×2 open Koper stitch pattern, and an elastic yarns threaded from a second guide bar and knitted in a 1×1 closed pillar stitch pattern. The elasticity of the knitted fabric composed of the elastic and non-elastic filament yarns are substantially the same in both longitudinal and transverse directions. A method of manufacturing the warp knitted fabric is also disclosed.

Abstract: A jacquard thread-guide bar (2) for warp knitting textile machines, comprising a supporting body (7) provided with a plurality of housing seats (5) configured and arranged so as to engage each removably a mounting body (6) of a single piezoelectric actuator (3) and to carry out an individual removable mounting of the single piezoelectric actuator (3) onto said supporting body (7), the housing seats (5) extending perpendicularly to the main longitudinal extension of the bar (2) and being configured and arranged so as to guide the sliding of the mounting body (6) between a mounting position and a disengaged position.

Abstract: Knitting machine, method of guiding a guide bar and guide bar drive for a knitting machine. Knitting machine includes a shogging drive, a swing-through drive, and at least one guide bar, which is moveable by the shogging drive in a shogging direction and by the swing-through drive perpendicular to the shogging direction. Further, a slide surface pairing has two slide surfaces oriented perpendicularly to the shogging direction, and the shogging drive acts on the guide bar via the slide surface pairing.

Abstract: A jacquard thread-guide bar (2) for warp knitting textile machines, comprising a supporting body (7) provided with a plurality of housing seats (5) configured and arranged so as to engage each removably a mounting body (6) of a single piezoelectric actuator (3) and to carry out an individual removable mounting of the single piezoelectric actuator (3) onto said supporting body (7), the housing seats (5) extending perpendicularly to the main longitudinal extension of the bar (2) and being configured and arranged so as to guide the sliding of the mounting body (6) between a mounting position and a disengaged position.

Abstract: A warp-knitting machine (1) comprising a unitary supporting structure (2), at least one needle bed (3) mounted on the unitary supporting structure (2), at least one thread-guide bar (4) for feeding yarn to the needle bed (3), mounted on the unitary supporting structure (2), a yarn feeding device (5) to the thread-guide bar (4) and to the needle bed (3); and electric and electronic devices (6) for the operation of the warp-knitting machine (1), the electric and electronic devices comprising at least main electronic devices (8) for the operation of the warp-knitting machine (1), the main electronic devices (8) comprising at least the power electronic devices and/or the servodrives for piloting the motors of the machine (1) and being mounted on the unitary supporting structure (2).

Abstract: A piezoelectric actuator for jacquard thread-guide bars for warp-knitting textile machines, comprising a mounting body (6) singularly dedicated to the piezoelectric actuator (3) and onto which one piezoelectric body (8) is mounted, said piezoelectric body (8), a plurality of interface electric contacts (9) operatively connected to the piezoelectric body (8), and a connecting portion (10) apt to interface with a thread-guide portion, the mounting body (6) being configured and predisposed for being able to be removably engaged into a housing seat (5) of a supporting body (7) of a jacquard bar and to carry out an individual and removable mounting of the actuator onto the supporting body (7).

Abstract: A connection device (4) for piezoelectric actuators (3) of jacquard bars for textile machines, comprising a bearing body (32), a plurality of interconnection elements (34) inserted into the bearing body (32), which can be removably connected to a corresponding plurality of interface electric contacts (9) of a plurality of piezoelectric actuators (3), at least one interconnection terminal (33) for the interconnection elements (34) with control means of a textile machine, and at least one fastening portion (35) configured and arranged so as to removably mount the bearing body (32) onto a supporting body (7) of a jacquard thread-guide bar (2).

Abstract: Knitting machine, method of guiding a guide bar and guide bar drive for a knitting machine. Knitting machine includes a shogging drive, a swing-through drive, and at least one guide bar, which is moveable by the shogging drive in a shogging direction and by the swing-through drive perpendicular to the shogging direction. Further, a slide surface pairing has two slide surfaces oriented perpendicularly to the shogging direction, and the shogging drive acts on the guide bar via the slide surface pairing.

Abstract: A piezoelectric actuator for jacquard thread-guide bars for warp-knitting textile machines, comprising a mounting body (6) singularly dedicated to the piezoelectric actuator (3) and onto which one piezoelectric body (8) is mounted, said piezoelectric body (8), a plurality of interface electric contacts (9) operatively connected to the piezoelectric body (8), and a connecting portion (10) apt to interface with a thread-guide portion, the mounting body (6) being configured and predisposed for being able to be removably engaged into a housing seat (5) of a supporting body (7) of a jacquard bar and to carry out an individual and removable mounting of the actuator onto the supporting body (7).

Abstract: A warp-knitting machine (1) comprising a unitary supporting structure (2), at least one needle bed (3) mounted on the unitary supporting structure (2), at least one thread-guide bar (4) for feeding yarn to the needle bed (3), mounted on the unitary supporting structure (2), a yarn feeding device (5) to the thread-guide bar (4) and to the needle bed (3); and electric and electronic devices (6) for the operation of the warp-knitting machine (1), the electric and electronic devices comprising at least main electronic devices (8) for the operation of the warp-knitting machine (1), the main electronic devices (8) comprising at least the power electronic devices and/or the servodrives for piloting the motors of the machine (1) and being mounted on the unitary supporting structure (2).

Abstract: A method for producing textile articles with warp-knitting machines, comprising a plurality of steps of shifting at least a first thread-guide (3) bar (2) of jacquard type with shog translational movements and with swing transversal movements, so as to produce textile articles on at least one needle bed (52), shifting at least the first thread-guide (3) bar (2) by means of a corresponding first linear motor, with a shog movement of a first predefined width; varying automatically through control devices (60) the shift controlled by the first linear motor so as to vary the width of the shog movement during the production of the textile articles, and shifting at least the first thread-guide (3) bar (2) with a shog movement having a second predefined width differing from the first one, and automatically controlling by means of the control devices (60) connected to the first thread guide (3) bar (2) at least an individual shift of a needle space of at least a first thread-guide (3) of the first bar (2), in additio

Abstract: The inventive knitting tools, in particular knitting needles (6), have a body (7) which, for alignment, has on its narrow side projections (15, 16) which have precisely machined abutment surfaces (18, 19) on their end faces. The abutment surfaces (18, 19), can be produced, for example, during a suitable stage of the manufacturing process. One of the projections (15, 16) or an additional projection (17) can be provided with abutment surfaces (20, 21) which are used for longitudinal positioning of the knitting tool. Corresponding grooves (25, 26, 27) in the needle bar (1) are assigned to the projections (15, 16, 17).

Abstract: Guide bar drive in a knitting machine and method of driving guide bar. The drive includes a linear motor composed of a stator and a rotor, in which the linear motor is greater in height than width. The stator has a length in a longitudinal direction and includes at least one narrow side, and the rotor is structured and arranged in the stator for translational movement in the longitudinal direction. A guide rod is positioned adjacent the at least one narrow side and extending in the longitudinal direction to support the rotor. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: Knitting machine that includes a plurality of guide bars, guides, associated with the plurality of guide bars, which are aligned to a working line, and drives, connected to the plurality of guide bars via coupling points, which are arranged next to one another in adjacent angle segments emanating from the working line and having a smaller width in an area adjacent the working line than in an area distant from the working line. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A control device (1) for thread-guide bars (2) of linear knitting machines, comprising a linear motor (10) designed to impart a translational motion to the thread-guide bar (2), means (40) for moving the thread-guide bar (2) according to an oscillating motion basically perpendicular to the translational motion, and transmission means (20) for transmitting to the thread-guide bar (2) the translational motion of the linear motor (10), thus enabling the oscillating motion. The device (1) is characterized in that the transmission means (20) include a first transmission element (21) associated to and integral with the linear motor (10), and a second transmission element (24) that can be integrally connectable to the thread-guide bar (2). Moreover, the first transmission element (21) has a first guide (22) having preferably a basically curved shape, in which the second transmission element (24) is movably engaged.

Abstract: An oscillating control device (1) for thread-guide bars (2) of linear knitting machines (60), comprising a support (5) that can rotate around a middle axis (6) to which at least one thread-guide bar (2) can be associated, movement means (10) for the support (5), and transmission means (20) operatively connected to the movement means (10) for imparting an oscillating movement to the support (5). The transmission means (20) are operatively associated to the support (5) on at least two separate actuating points (7a, 7b) for moving it with an oscillating movement in a balanced manner with respect to the middle axis (6) thereof. In particular, a pushing action and a pulling action are applied simultaneously on the two actuating points (7a, 7b) by the movement means (10) through the transmission means (20).

Abstract: A device (1) for improving the threading of thread-guides (5) for warp linear knitting machines (10), comprising at least a first support (6) that can be associated to a supporting structure (11) of a warp linear knitting machine (10), a second support (7) operatively placed between the first support (6) and the supporting structure (11), a plurality of thread-guides (5) designed to guide threads while knitting a knitted item, and at least one thread-guide (5) bar (2) operatively associated to the first support (6) to which the thread-guides (5) are associated. The first (6) and the second (7) support are movable with respect to the supporting structure (11) between an operating position, in which the thread-guides (5) are active for the formation of the knitting item, and at least one threading position, angularly rotated with respect to the operating position, in which the threading of the thread-guides (5) takes place.

Abstract: A control device (1) for thread-guide bars (2) of linear knitting machines, comprising a linear motor (10) designed to impart a translational motion to the thread-guide bar (2), means (40) for moving the thread-guide bar (2) according to an oscillating motion basically perpendicular to the translational motion, and transmission means (20) for transmitting to the thread-guide bar (2) the translational motion of the linear motor (10), thus enabling the oscillating motion. The device (1) is characterized in that the transmission means (20) include a first transmission element (21) associated to and integral with the linear motor (10), and a second transmission element (24) that can be integrally connectable to the thread-guide bar (2). Moreover, the first transmission element (21) has a first guide (22) having preferably a basically curved shape, in which the second transmission element (24) is movably engaged.

Abstract: A control device for textile machines, in particular for crochet machines, comprising an electric motor (10) having an output shaft (11) drivable in rotation and a first reduction gear (12) interposed between the output shaft (11) and a knitting member (13) of a textile machine. The device (1) further comprises drive means (14) to power and control the motor (10), and detecting means (15) to detect a main parameter (100) representative of a position of the knitting member (13) and to generate a corresponding main signal (110); said main signal incorporates the main parameter (100) and is destined to the drive means (14) regulating power supply to the motor (10) depending on the main parameter (100).

Abstract: A transmission mechanism for weft bars of knitting machine comprises pairs of connecting rods each pair having one end coupled to the weft bar; connection members having one ends coupled to the other ends of the connecting rods; universal rods having one ends pivotably coupled to the other ends of the connection members; upper engagement blocks having upper sides pivotably coupled to the other ends of the universal rods; lower engagement blocks having top teeth on either end; belts each having parallel teeth on the inner surface, each belt being movable between the upper and the lower engagement blocks with the teeth thereof meshed with the top teeth of the lower engagement block; two transverse rods inserted through the lower engagement block for connecting the lower engagement block and the knitting machine together; sensors each secured on the upper engagement block for controlling the motions of the upper and the lower engagement blocks; pairs of idler gears each pair provided on two sides of the belt; pa

Abstract: A rashel machine is described for the production of a knitted fabric, especially on a double bar or multi-bar rashel machine which includes a knitting needle bar and a guide bar assemblage having several guide bars therein. The guide bar assemblage is supported on a shaft that has a rotationaL axis that can be adjusted relative to the knitting needle bar essentially in the direction of its stroke movement. According to the invention, the rotational axis is adjustable between a first position and a second position by way of an adjustment mechanism, whereby in a first position a threading-in of a thread into the hole of the guide needle is easily possible even with guide bars lying on the inside without having to disconnect the guide bars lying on the outside of the guide bar assemblage.

Abstract: A female member of a hook and loop attachment structure enables a one to one correspondence between loops and stitches in the knitted structure. The female member comprises individual wales of chain stitches with loops, wherein the wales of chain stitches are knitted on a supporting background, such that there is a corresponding number of loops to stitches. Each stitch may be associated with a respective loop or each loop may be attached to two respective stitches. The loops may be formed using a single guide bar, and the wales of chain stitches with loops may be made either with a single yarn or with two yarns.

Abstract: A mechanism for a gripper Axminster loom is disclosed which includes a plurality of yarn carriers each of which is movable to any one of a plurality of predetermined positions. Each carrier guides a plurality of tuft yarn and is arranged to present one of the yarns to a gripper when the carrier is located at a corresponding one of the predetermined positions. The mechanism includes a plurality of independently controllable rotary drive motors, each of which is connected to drive an associated carrier for selectively moving the associated carrier to a selected one of the predetermined positions.

Abstract: The invention relates to a warp knitting machine, especially a crocheting machine, comprising knitting needles guided on a knock-over sinker with warp thread layers which are fitted upstream with warp thread guides and weft thread layer rods assigned to weft thread guides. The invention provides an improvement to a warp knitting machine, characterized in that the weft thread guides of the weft thread layer rods do not cross the knitting needles and the weft thread guides of the weft thread layer rods are assigned feeding means relative to the knitting needles, which can be guided and driven upwards and downwards between the weft thread guides and the knitting needles in such a way that the feeding means place staggered weft threads underneath the assigned knitting needles.

Abstract: The invention relates to a warp knitting loom with individually driven guide bars that are controlled by a control device. A linear motor is used, resulting in a particularly space-saving and flexible driving apparatus. This motor has at least two driving elements which are each connected to a guide bar and can move back and forth in a common stator with a closed magnetic circuit. Each driving element has at least one drive coil which is connected to the control device and whose winding plane is transversal to the magnetic flux.

Abstract: In a device for fastening active components (18) to the bar (6) of a warp knitting machine, the bar (6) has transverse channels (24) each of which is intended to receive a guide section (25) of the active component (18), and a longitudinal groove (20) for receiving holding sections (21) of the active component (18). The longitudinal groove (20) has an uncovered insertion opening area. The transverse channels (24) are arranged next to it. The holding sections (21) are wedged into the longitudinal groove (20) by means of the force of a spring (22). A tool (29) for removing and installing the active components (18) has a first driver (34) carried by an operating handle (31), which driver is fitted to a first stopper (35) on the active component (18) and contributes towards extracting the holding part (21) from the longitudinal groove (20). The result of this is a structure without play, with precise positioning and minimal weight.

Abstract: There is provided a narrow width crochet knitting machine having a driving mechanism of a weft guide bar and two or more kinds of warp guide bars, which can form two or more kind of knitted loops in a narrow knitting space with a simple and compact mechanism. In a narrow width crochet knitting machine having a driving mechanism for independently and synchronously driving one or more weft guide bar, warp guide bars and a plurality of knitting needles, the warp guide bars comprise a plurality of guide bars for forming two or more kinds of knitted loops, at least one guide bar of the warp guide bars is arranged in a space for locating the weft guide bar, a support block of the one warp guide bar is arranged in a substantially identical plane with a support block of the weft guide bar, and the weft guide bar support block and the weft guide bar support block are vertically moved in the substantially identical plane by a main drive shaft independetnly from each other.

Abstract: A guide drive device permits compact reception of a greater number of guide bars and nests within an existing installation space at a side portion of a knitting machine, by disposition of a drive source for guide attaching members in a space above a fan-shaped arrangement. A support member, attached to a machine frame, is provided with the drive source on the upper side of guide bars, directly, or via a base bar which constitutes an attaching and holding member. The guide bars are displaceable by operation of the drive source, and are arranged in parallel ranks successive in a direction intersecting with knitting needle rows. An angle of circumference can thereby be reduced for enhanced use of available space. The nest angle can be further reduced for improved patterning function surpassing that of a conventional Multibar Raschel machine by tightly fastening thread feed guides of the guide attaching members to driving long members respectively carrying out independent shogging motions.

Abstract: A segment carrying knitting elements for a warp knitting machine comprising a plurality of similar plates. Holes provided in said plates are penetrated by at least one hollow pin, which at its circumference is connected with the plates. This gives rise to low weight segments for attachment to the bars of a warp knitting machine.

Abstract: A knitting machine, in particular a warp knitting machine with a central control apparatus (120) containing a computer with an input device (122) for the establishing of the characteristic data of the knitted article (20) to be produced and with a central control unit (124) which is connected over a line (126) with individual drives (16, 28, 33, 35, 63a, 63b, 63c, 63d) for aggregates (15, 22, 32 34, 44a, 44b, 44c, 44d) of the knitting machine. The knitting machine has a main drive (16) for at least one needle bar of a row of needles and a central control unit (120) with an input device (122) to establish the characteristics of the knitwear to be produced. In order to improve the control, each drive (16, 28, 33, 35, 63a, 63b, 63c, 63d) of individual components (15, 22, 32, 34, 44a, 44b, 44c, 44d) has an individual intelligent control unit (163, 283 33.sub.3, 35.sub.3, 63a.sub.3, 63c.sub.3, 63d.sub.3) to assume and process the relevant program module of the control device (120).

Abstract: The thread processing device (8) of a textile machine has at least one thread guiding device that moves a thread (4) back and forth between at least two positions (12, 14) by means of a thread guiding member (30, 32, 34). The thread guiding member may be moved in one direction by means of an interlocking drive (28) and in the opposite direction by a frictional engagement drive (36) that acts against the interlocking drive (28). The textile machine is substantially improved by designing the frictional engagement drive (36) as a pneumatic drive with an individual gas chamber (64) that contains a gas volume that may be compressed by the interlocking drive at the working frequency. The gas chamber communicates with a compressed gas source through a non-return valve.

Abstract: A raschel machine comprises a stitch comb bar 9 whose holder 11 are swingable by the stitch comb shaft 12 and a knock-over comb bar 6 whose holders 8 are secured against swinging by an out-rigger 8a. The stitch comb shaft 12 is contained in knock-over comb bar holders 8. These holders are carried by a supplemental shaft 18 which is displaceable relative to the machine frame 17 with the assistance of displaceable eccentrics 20. In this manner, it is possible to alter the displacement setting of the knock-over comb 4 and the stitch comb 5 at the same time.

Abstract: A Jacquard fabric includes a Jacquard yarn plaited into a base knit structure such as, for example, a "Sleeknit" structure. The fabric may be knitted on a warp knitting machine having at least four guide bars, the frontmost guide bar being a Jacquard guide bar, with the Jacquard yarn being knitted in a knit-float-knit sequence. The two middle guide bars are, for example, fully threaded with multifilament synthetic yarns (e.g. Nylon or polyester), which knit on alternate courses and float on alternate courses. The backmost bar may be fully threaded with, for example, an elastomeric fiber (e.g. Lycra Spandex) which may be laid into the structure during knitting. In an exemplary method for producing the fabric of the present invention, the two middle guide bars knit on alternate courses, so that only one of these bars is knitting on any one course.

Abstract: A process and machine for the preparation of pile ware uses a single needle bedded warp knitting machine, having pile sinkers. During the swing-through of the guides subsequent to the underlap into the overlap position, first the ground threads and then the left pile threads, are laid to the rear of the needles, and run along these, with separation from each other. The pile sinkers are introduced into the space between the ground threads and the left pile threads, during or after the swing-through, and stay there until the knock-over of the stitch. The threads are provided to the guide bars in a one full/one empty order, only every second needle serving for stitch formation. The number of pile sinkers equals half of the number of needles. Right pile threads are provided which are overreached by the pile sinkers together with the ground threads laid about needles not serving for stitch formation and are then knocked over.

Abstract: The present invention provides a patterning unit of a warp knitting machine having a holding member with a stator of a linear pulse motor disposed thereon and a plurality of moving elements provided at arbitrary intervals on the holding member with parts of the moving elements being constructed as guide points. A control method increases reliability and accuracy of positioning the moving elements and eliminates erroneous operation such as step-out by providing a position sensor related to poles of the stator and by exciting movement of the moving elements on a step by step basis based upon positions of the moving elements. The control method includes providing the moving elements each with a linear motor coil assembly for functioning in conjunction with the stator, defining the poles, to move the moving elements along the holding member.

Abstract: The present invention provides a patterning unit of a warp knitting machine in which a stator of a linear pulse motor is assembled in a holding member and a plurality of moving elements are provided at arbitrary intervals on the same holding member with part of the moving elements being constructed as a guide point. A control method increases reliability of accuracy of positioning of the moving elements and eliminates erroneous operation such as step-out by providing a position sensor in connection with the poles and by controlling movement of the moving elements based on detected positions thereof and a set of parameters. The control method includes providing the moving elements each with a linear motor coil assembly for functioning in conjunction with the linear motor stator to move the moving elements along the holding member.

Abstract: The present invention provides a patterning unit of a warp knitting machine having a holding member with a stator of a linear pulse motor disposed thereon and a plurality of moving elements provided at arbitrary intervals on the holding member with parts of the moving elements being constructed as guide points. A control method increases reliability and accuracy of positioning the moving elements and eliminates erroneous operation such as step-out by providing a position sensor and by exciting movement of the moving elements on a step by step basis based upon positions of the moving elements sensed by the position sensor. The control method includes providing the moving elements each with a linear motor coil assembly for functioning in conjunction with the stator to move the moving elements along the holding member.

Abstract: The present invention provides a patterning unit of a warp knitting machine in which a stator of a linear pulse motor is assembled in a holding member and a plurality of moving elements are provided at arbitrary intervals on the same holding member with part of the moving element being constructed as a guide point. The construction allows a thin linear pulse motor to be realized, erroneous operation such as step-out to be prevented in positioning control and the positioning to be carried out stably regardless of power failure or external noise. To that end, poles of the moving element are disposed so as to face poles on both sides of the stator. Moving element driving coils of the poles of the moving elements, NS directions of two field magnets and teeth of the poles of the stator are set so that a magnetic path of the field magnets runs in the same direction.

Abstract: A warp knitting machine with at least one knitting needle bar and with at least one guide bar (46) lapping in lengthwise direction with thread guides for the feeding of threads. Incorporated into the guide bar is at least one auxiliary guide bar (72) lapping back and forth in the lengthwise direction of the guide bar with at least one auxiliary thread guide (76), which are driven relatively to one another. This allows for the arrangement of an auxiliary thread guide in an especially simple and space-saving manner.

Abstract: Installed on a crochet galloon machine is a device (1) for inserting alternately-interposed wefts, comprising two weft-inserting sliders (10, 16) carrying respective threading tubes (11, 17) each adapted to lay down a weft yarn (12, 18) to be interlooped in the article of manufacture (M) being worked. Each slider (10, 16) is movable along a respective weft-inserting guide (9, 15). The cyclic movements of the sliders (10, 16) are mutually offset according to a cycle fraction equal to the number of the provided weft-inserting bars (9, 15), so as to alternate laying down of each weft yarn (10, 18) with each chain stitch (6b)-formation cycle.

Abstract: A patterning method and device has yarn guides for guiding pattern yarns in a warp knitting machine and divisional fall plates for knitting pattern yarns in a fall plate structure individually drive-controlled through drive devices. The device comprises any number of moveable bodies having yarn guides, the bodies being installed for movement along a row of knitting needles by the drive devices. For patterning, the moveable bodies are moved through a desired distance along the row of knitting needles so as to be positioned for patterning, thereby providing a patterning zone for pattern yarns corresponding to the number of yarn guides. Thus, it is possible to effect a free varigated patterning which is comparable with the patterning effect provided by the Jacquard control.

Abstract: A Jacquard bar (1) for warp knitting machines having at least one row of guides (4), which can be moved to and fro between two stops (6). A thread redirecting edging (11) covers the intermediate spaces between the stops (6). The redirecting edging (11) is fixed positionally by connection with the stops (6). In this way the weight of the components bearing the redirecting edging can be reduced allowing precise positioning of the guides in operation.

Abstract: Guide bars (24, 32, 34) with thread guides (26, 36, 38) are arranged above the knitting needles (4). At least one group (G1 to G7) of at least two guide bars (36, 38) which are arranged one above the other is provided to increase the number of possible guide bars and/or to improve the accessibility of the guide bar region. This arrangement is effected in such a way that the thread guides of the guide bars (32, 34) arranged one above the other do not intersect.

Abstract: A guide bar arrangement for a warp knitting machine has at least one guide bar, which is axially displaceable by means of a displacing arrangement and is carried, suitably on an axially rigid holding arrangement attached to a swinging shaft, through the intermediation of a compensating arrangement. The compensating arrangement and the displacement arrangement include bending transducers, which are attached at one end thereof on the holding arrangement (a lever 19 holding rails) and on the other end thereof on the guide bar and are bendably deformed under the influence of a direct current control signal. This leads to a simple construction of the guide bar arrangement with little frictional loss.

Abstract: A warp knitting machine having at least one guide bar (1) comprises a plurality of retaining segments (11) releasably attached to the guide bar (1). The retaining segments receive in each case a subassembly (17) of piezoelectric bending transducers (9) for displacing the guides by a knitting needle space. The control lines leading to the bending transducers (9) are provided with connector contacts (37) for the purpose of being releasably connected to the control device (42). In this way, it is possible to replace rapidly guide, bending transducers or control lines.

Abstract: A system for controlling the horizontal movements of yarn carrier bars in an automatic loom or knitting machine includes a plurality of yarn carrier bars mounted for horizontal movement, a respective stepper motor operatively connected to each yarn carrier bar to control its movement, a respective programmable motor control unit electrically coupled to each stepper motor, a programmable central controller electrically coupled to all motor control units, an electrical power supply, and an energy storage means which provides sufficient energy for operation of the stepper motors and control units for a short period when power from the power supply is unavailable. Each stepper motor includes an output shaft, and a respective shaft position encoder measures and supplies output shaft position information to the motor control unit.

Abstract: A yarn guide needle has a simple construction, is capable of being operated for swing motion and lapping motion, of accurately guiding a yarn to a desired position regardless of the type or the tension of the yarn and of being driven by a simple driving mechanism. The yarn guide needle has an upper flat portion and a lower flat portion twisted relative to each other, and the yarn guide needle is supported for turning by a pivot pin attached to the upper flat portion on a pair of support plate obliquely extending relative to the row of needles. Therefore, when the yarn guide needle is turned on the pivot pin, the lower flat portion moves in a plane oblique to the row of needles for lapping motion and a guide hole formed in the lower end of the lower flat portion is shifted transversely. Since the yarn guide needle need not be bent for lapping motion, the yarn guide needle may be formed of a firm, rigid plate.

Abstract: A warp knitting machine having a main shaft has at least one bar mounted to reciprocate in accordance with a predetermined schedule. The machine also has an electrically activated drive arrangement with a body made of a material that can alter at least one of its dimensions in dependence upon the magnitude of an applied field. The machine also has a control arrangement coupled to the drive arrangement for providing an electrical signal thereto, in accordance with the predetermined schedule and in dependence upon the angular displacement of the main shaft. This electrical signal can establish the applied field with a predetermined timing within each displacement step of the one bar.

Abstract: Warp knitting machine with a guide bar executing an oscillation movement and a base shift movement. Single thread guides are mounted thereon and are individually movable in a to- and fro- motion in the shift direction and are combineable into one or more groups and are group-wise adjustable by electrically controlled control motors under the influence of a program control having a pattern shift movement stored therein. Each of the control motors is connected to the thread guides of at least one group by a pull control cable held under tension which extends over the length of the guide bar and is further connected to the thread guides such that all thread guides of any one group execute the same pattern shift movement. The control motors are structurally supported independent from the guide bar. The pull control cables are guided from the guide bar at right angles and then deflected toward said motors.

Abstract: There is provided a warp knitting machine with a weft thread arrangement M having two jacquard guide bars 11 and 12. These are subject to shogging in the sense of a tricot stitch. In substantially each working cycle, a portion of the guides 13 of first jacquard guide bar 11 are displaced in the sense of a pillar stitch. The selection of the so displaced guides alters itself, but periodically. Thus certain needles 7 remain unlaid by warp threads of the first guide bar 11. The guides bar 14 of the second jacquard guide bar 11 lay warp threads around the said needle 11 left free by the warp threads of guide bars 11 while laying thread around other needles 7. This permits the provision of a patterned fabric which is exceedingly stable two-dimension.