Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.

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 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 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: 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: A jacquard device (1) for selectively shifting thread-guides (2) in a knitting machine, comprising at least one supporting element (3) provided with a plurality of housing seats (4) for a plurality of thread-guides (2), a plurality of thread-guides (2) mounted onto the supporting element (3) and having at least one thread-guide portion (2b) selectively moving at least between a first and a second operating position and apt to guide a thread (7), at least one actuating element (12) for each thread-guide (2) for shifting the thread-guide portions (2b) of the thread-guides (2) between the first operating position and the second operating position, and at least one electropneumatic actuating device (15) operatively connected to the actuating element (12) for shifting the thread-guide portion (2b) of the thread-guides (2).

Abstract: A jacquard device (1) for selectively shifting thread-guides (2) in a knitting machine, comprising at least one supporting element (3) provided with a plurality of housing seats (4) for a plurality of thread-guides (2), a plurality of thread-guides (2) mounted onto the supporting element (3) and having at least one thread-guide portion (2b) selectively moving at least between a first and a second operating position and apt to guide a thread (7), at least one actuating element (12) for each thread-guide (2) for shifting the thread-guide portions (2b) of the thread-guides (2) between the first operating position and the second operating position, and at least one electropneumatic actuating device (15) operatively connected to the actuating element (12) for shifting the thread-guide portion (2b) of the thread-guides (2).

Abstract: A warp knitting machine with bearded needles (5) and a pattern press comprises a driven press bar (10) having individual press elements thereon. These are so controllable that during the working stroke (47) of the press bar (10) at choice there is provided a press contact onto the hooks (19) of the corresponding bearded needles (5) or not. Every pressing element (46) is provided with a piezoelectric bending transducer ((42) attached at one end whose free end (45) in the direction of the needle bed may either move from a first position during the working stroke 47 into a press contact and in a second position in which the press element 46 or a power transmitting element located forwardly thereof in the direction of the needle bed may be displaced. In this manner, it is possible to provide a safely constructed pattern press suited for high velocity operation.

Abstract: A warp knitting machine comprises a jacquard guide bar (102) whose guides (7) are movable to and fro between two end stops (113 and 114). This motion is effected by setting members of a guide control. The end positions of the guides have a separation equal to two needle spaces. Additional strikers (115) and (116) are, at choice, made operative by the setting members (transducer 108) of a stop control. When one of the additional strikers is in an operative position, that striker holds the guide (7) in a central position. In particular, needle control and stop controls may operate with piezoelectric transducers. In this manner, it is possible to obtain an extremely large number of patterning possibilities.

Abstract: A stroke control arrangement (1) for influencing individual threads of a thread sheet, in particular for a warp knitting machine, comprises entrainment devices (20) controllable by piezoelectric transducers (19). The entrainment devices (20) are provided adjacent to the transducers (19) in the transverse direction and are born at one end thereof in a portion (25) supported by a carrier (16) and carry at the other end thereof a transport stop (37). The transport stop (37) in a first position carries a stroke element, which in a second position of the transport stop (37), to the contrary, is left uninfluenced. In this way there is obtained a reliable system for stroke control.

Abstract: A knitting machine and needle selection mechanism is provided including a piezoelectric body movable between upper, lower and neutral positions corresponding to knit, tuck and welt positions of the knitting needles, a first driving circuit for displacing the piezoelectric body upwardly, a second driving circuit for displacing the piezoelectric body downardly, a third driving circuit for displacing the piezoelectric body to the neutral position, and a control device for controlling the driving circuits in accordance with a pre-set program.

Abstract: The present invention relates to an auxiliary driving device for the patterning device for a warp knitting machine, including a desired number of movable bodies each having at least a portion thereof formed as a guide point, the movable bodies being disposed in a guide path so that they are movable on the basis of driving means installed thereon, patterning being effected in that the individual guide points are moved by desired amounts of displacement in optional directions on the basis of signals transmitted from an electronic control section to the driving means for the individual movable bodies and are thereby positioned. The invention provides a device and method enabling the movement of the movable body to follow even a high speed rotation, and is characterized in that it includes auxiliary driving means for adding to the driving force from the driving means during start and movement involved in the lapping caused by the movable body.

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: Textile machine in particular a warp knitting machine having attached, side-by-side, on a carrier (1), stroke elements (2) which grip on the threads, which are individually displayable in the longitudinal direction. To the carrier (1), are provided control element (21) which are electrically activatable and can be brought into two positions. A common activating arrangement (8) which runs along the length of the carrier (1) and is driveable to and fro in the stroke direction, influences the stroke element (2) in the first position of the appropriate control element (21) in the at-rest position and carries it with it in its second position in a working mode. In this manner it is possible to control the individual stroke elements without the need for harness cords.

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: In a warp knitting machine at least one guide bar (8,9) carries piezoelectric bending transducers (14,15) to which are attached guides (11,12). A control arrangement (16) comprises a computer (17,19,20) and a potential generator, which provide the control potential via control lines (25) to the bending transducers. The potential source provided to a guide bar (8,9) comprises a plurality of serial to parallel converters (23) whose data and command inputs (22) are connected via a common data and command bus (21) with the computer and whose outputs (26) are connected with the bending transducers via the control lines (25). The serial to parallel converters (23) take up the data sequentially and upon occurrence of the switching command transmit them simultaneously in the form of control potentials. In this way rapidly running and/or large warp knitting machines can be provided with a operative piezoelectric jacquard control.

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 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: There is provided a warp knitting machine with a jacquard control mechanism. Piezoelectric transducers are provided to each individual guide of a guide bar. These transducers can displace the guides by the application of a control potential. In particular, the piezoelectric transducers are formed as deflecting transducers. These transducers can comprise a plate-like carrier upon which there is provided at least one active layer of piezoelectric material. A holding arrangement of the guide bar can rigidly support one end segment of the plate, whose other end can carry the guide. This gives rise to a very easily constructed jacquard arrangement.

Abstract: A control arrangement for the shifting movement of at least one guide bar (4) contains a pick-off gear (10) against which the guide bar is pretensioned. The pick-off gear (10) has a plurality of thrust elements (8, 8.sub.1, 8.sub.2, 8.sub.3) connected one behind the other, between which displacement elements (12.sub.1, 12.sub.2, 12.sub.3, 12.sub.4) are arranged, the thrust elements (8, 8.sub.1, 8.sub.2, 8.sub.3) being supported on the radial cams (34) of the displacement elements (12.sub.1, 12.sub.2, 12.sub.3, 12.sub.4). The displacement elements (12.sub.1, 12.sub.2, 12.sub.3, 12.sub.4) are connected via coupling members (16) to a pattern controlled adjusting device (18) and can be adjusted between a basic position and a switched position. In order to improve the warp knitting machine, the adjusting device (18) is constructed as a negative dobby or Jacquard machine operating by the double-lift method and the displacement elements are pretensioned in one position.

Abstract: In a knitting machine, a plurality of stepping motors (10) is controlled by an electronic control unit (35) and each motor transmits horizontal oscillations to a tube bar (5). Each oscillation is built up of a plurality of horizontal-movement steps, each step being delimited between two limit points to which a centered positioning of the threading tubes (8) in the spaces defined between the needles (9) corresponds. A photoelectric sensor interlocked to the control unit detects the passage before a given read point of optical locators reproduced on plate-like elements, each associated with the drive shaft of one of the motors, in order to check whether the individual bars perform correct movements. Should a cutoff in the electric supply to the knitting machine (4) occur, each tube bar (5) would be stopped at anyone of the limit points.

Abstract: The control member herein described comprises an electromagnet 30 which is fixed with respect to a thread guide rail and acts on a swinging arm 37 l pivoted with respect to the electromagnet itself and slidably engaging a lifter 14. Due to the energization of the electromagnet 30 the swinging arm 37, is brought, against the action of a return spring 39, from a rest position in which the lifter is disposed in a disengagement condition, to a working position in which the lifter is in an engagement condition and is engaged by actuator means oscillating in synchronism with the thread guide rail in order to cause the actuation of a threading tube associated with said lifter.

Abstract: There is provided an electromagnetically operated jacquard control arrangement having a magnetic system. Each control element is provided with a magnetic core having a corresponding repulsion winding and a anchor equipped with a permanent magnet. A control arm urges the anchor toward the magnetic core on each cycle. When the repulsion winding is activated the anchor is repelled from the magnetic core. If there is no activation, then the anchor remains in its position. A control arrangement of this type works in a highly reliable manner.

Abstract: The invention pertains to the technical field of the knitting machines and it particularly relates to a control device for the selection of weft yarns.The device of the invention comprises selective tensioning means consisting of movable plates individually integral to tie rods, as well as of electromagnets individually facing said movable plates and globally integral to a movable support approaching said plates and moving away therefrom provided with an alternate motion in synchronism with the movement of the needles of the respective knitting machine. Said electromagnets are individually excited according to a predetermined work program, by electronic circuits.

Abstract: A warp knitting machine has a plurality of needles and a Jacquard guide bar having at least one pair of stopping surfaces. The machine also has a plurality of Jacquard-controlled guides each having a displaceable forward end and each having a rearward end attached to the Jacquard guide bar. The pair of stopping surfaces spaced and positioned to straddle a given one of the Jacquard-controlled guides. The machine also has at least one displacement member for reciprocating the given one of the Jacquard-controlled guides against the pair of stopping surfaces a distance of about one neddle space. The stopping surfaces straddle the given one of the Jacquard-controlled guide at a position between its forward end and its point of contact with the displacement member.

Abstract: In the process for the control of the warp speed during direct warping, the winding diameter is determined by a contactless measurement. The actual thread speed is determined from the winding diameter and the current warp beam rate of rotation. A direct warping machine for carrying out this process has a transducer for measuring the winding diameter. This transducer is located proximate to but not in contact with the circumference of the winding for measuring the winding diameter. Also included is an arrangement for the determination of the rate of rotation of the warp beam. Also, a computer can calculate the thread speed from the above outputs that correspond to winding diameter and rate of rotation.

Abstract: In an electromagnetically operated, jacquard control arrangement, each controllable element is provided with an electromagnet cooperating with an anchor. An actuating current switch can energize the electromagnet arrangement. A swingably mounted control element provides a movable contact point on a lever arm for moving controllable elements. A swingable synchronization arrangement is driven back and forth by a continually rotating main shaft which can also turn the control element in one direction over a predetermined working angle. A return spring, in dependence upon the activation condition of the electromagnet, can swing back the control element. At the beginning of each working cycle the anchor is positioned proximate the poles of the electromagnet. The anchor is attached to the control element. The anchor of the control element may be carried by the synchronization arrangement.

Abstract: A steering system for controlling the operation of a warp knitting machine performing the function of a conventional jacquard mechanism includes an electromechanical mechanism to maintain the steering element in one of its two possible terminal positions. The system includes a steering mechanism disposed generally above and in relatively close proximity to the guidebar drive levers of the knitting machine and is operably coupled to a plurality of steering elements which are disposed proximate the guides of the machine. Activation of the electromechanical device coupled to a predetermined programming device causes the steering elements to be maintained in one of its two stable conditions which may be synchronized with the source of machine driving power.

Abstract: A guide bar assembly for use in a warp knitting machine in which a plurality of ferromagnetic, tubular yarn carrier elements are disposed between two bar rails forming a guide bar and can be shifted longitudinally independently from each other. The elements are magnetically held in apertures between the bar rails which can be longitudinally shifted in opposite directions to shift the elements.

Abstract: Knitting-machine guide bars, which carry columns of guides through and then along a row of knitting needles and are moved longitudinally along the row on the basis of the content of a programmable read-only memory. Stepping motors which respond to the memory rotate pinions in directions and numbers of steps determined by the memory. Racks engaging the pinions articulate respective adjustable-leverage levers which reciprocate the separate guide bars longitudinally along the row. Respective springs press each rack against each pinion transverse to the rack length so as to eliminate slack. Longitudinal movement of the bars is synchronized with their transverse movements through the needle row by sensing when the guides clear the front of the needles and producing a synchronizing pulse that gates appropriate signals from memory buffers to the motors; and producing a synchronizing pulse on a separate channel when the guides are clear of the rear of the needles.