Abstract: Systems and methods for manufacturing a garment, include: receiving garment design input data for a garment design including data representing a first textile structural unit at a first location and data representing a second textile structural unit at a second location; generating a textile production machine instruction data set based on the garment design input data; forming a first garment using a first textile production machine to include the first textile structural unit and the second textile structural unit; creating revised garment design input data for the garment design based on the first garment based on receiving additional body map data relating to the first garment; generating revised textile production machine instruction data set based on the revised garment design input data; and forming a second garment using a textile production machine and the revised garment design input data including the changes to the garment design.

Abstract: A magnetic rotary encoder for the fine resolution of the rotational angle of a shaft (1) includes an exciter unit which images the rotation to be monitored and rotates about an axis of rotation (20), a stationary fine resolution sensor unit (2) for fine resolution of each revolution, and an electronic processing means. It is characterized in that the exciter unit includes two first permanent magnets (7, 7) which are disposed symmetrically with respect to the axis of rotation at a mutual spacing such that their magnetization vectors (21, 21) which extend through their respective center of gravity extend in the same direction in relation to the common field lines and form a central field space (9) which directly connects the permanent magnets, and at least the fine resolution sensor unit is so arranged that it can use the field (10) of the central field space for measurement.

Abstract: An electromagnetic actuator, particularly for needle selection devices in machines for knitting, hosiery or the like, with high gauge. The electromagnetic actuator comprises a main magnet which has at least two polar regions which are side-by-side and separated by a gap and two selection electromagnets, each provided with at least one polar region which is aligned with the gap and spaced laterally from said gap. The at least one polar region of a selection electromagnet is arranged laterally on the side opposite to the at least one polar region of the other selection electromagnet with respect to the gap. The selection electromagnets can be activated individually to generate or cancel or reduce an attractive magnetic force at the corresponding polar region.

Abstract: A monitoring system can be used to monitor an operation status of at least one machine. The machine has an operation lamp. The operation lamp is used to emit light when the operation status of the machine is under operation. The monitoring system includes at least one light sensor and at least one controller. The light sensor is disposed at the operation lamp for emitting a sensing signal according to the brightness of the operation lamp of the machine. The controller is electrically connected with the light sensor for determining, the operation status of the machine according to the sensing signal.

Abstract: A magnetic actuator, particularly for selection devices in hosiery knitting machines or the like, comprising a main magnet, which has at least two poles arranged side by side and separated by a discontinuity, and a selection electromagnet, which is provided with at least one pole arranged in alignment with the discontinuity and spaced laterally with respect to it. The selection electromagnet can be actuated to generate or eliminate or reduce a magnetic attraction force at the pole of the selection electromagnet.

Abstract: A magnetic actuator, particularly for selection devices in hosiery knitting machines or the like, comprising a main magnet, which has at least two poles arranged side by side and separated by a discontinuity, and a selection electromagnet, which is provided with at least one pole arranged in alignment with the discontinuity and spaced laterally with respect to it. The selection electromagnet can be actuated to generate or eliminate or reduce a magnetic attraction force at the pole of the selection electromagnet.

Abstract: A plurality of control magnetic poles 33n-34n are provided in each selection unit of a selection actuator, and the upstream control magnetic poles 33n, s and downstream control magnetic poles 34n, s are controlled independently based on the relative positions thereof to selectors. The selectors can be selected with a pitch approximately half the pitch at which selection is possible with the conventional selection actuator and the time used for selecting each selector can be extended. Therefore, a knitting member can be reliably selected even in a fine-gauge knitting machine.

Abstract: In a magnetic-type needle selection device of a flat knitting machine, a power supply control device controls a current-application interval, during which an electric current is applied to a selector actuator, in accordance with the moving speed of a carriage. The power supply control device is structured so that, when the moving speed of the carriage is high, the current-application interval is lengthened by moving further forward a power-supply starting position than when the moving speed of the carriage is medium. When the moving speed of the carriage is low, the current-application interval is shortened by moving further backward the power-supply starting position and moving further forward a power-supply stopping position than when the moving speed of the carriage is medium.

Abstract: What is described is a knitting machine with an electromagnetic selecting device for the three-way technique. In order to reduce the space requirement for the selecting device in height and width, assigned to each of the knitting tools (7) is a pivotable control jack (8) having two raising butts (17, 18) and to which, per selecting device, two control magnets (31, 32) arranged one after the other in the running direction of the knitting tools (7) are assigned. Depending upon which of the two control magnets (31, 32) is selected for a selecting procedure, the control jacks (8) find their way with one raising butt (17) onto a knitting cam (28) or with the other raising butt (18) onto a tuck cam (29).

Abstract: A selector actuator is provided with two controlled attraction parts (5, 6) and three non-controlled attraction parts (7, 8, 9). In the controlled attraction part (5), two magnetic coil poles having attraction sites (16a, 16b) at their top ends are arranged with a magnet in between them. In the non-controlled attraction part (7), three yokes (32a, 32b, 32c) having attraction sites (33a, 33b, 33c) at their top ends are arranged with two permanent magnets (31a, 31b) sandwiched in between them. The controlled attraction part (6) and the non-controlled attraction parts (8, 9) are similarly arranged, respectively. Each magnetic coil pole is arranged to oppose to the ends of two yokes of the same non-controlled attraction part.

Abstract: In a knitting member selection actuator (1) of a knitting machine, there is provided between a pair of yokes a magnetic property means (35a, 35b, 45a, 55a, 55b) for making a magnetic reluctance between the confronting yokes (32a, 32b, 42a, 42b, 52a, 52b) of an uncontrolled attraction region (7, 8, 9) larger than a magnetic reluctance between the yokes of the uncontrolled attraction region and the knitting member attracted to attraction surfaces and also smaller than a magnetic reluctance between the yokes of the uncontrolled attraction region and attraction surfaces of the adjacent controlled attraction region (5, 6).

Abstract: A device for transferring digital data between a rotating part and a fixed part of a machine, particularly for hosiery knitting machines and the like, comprising a data transmission unit and a data reception unit, the data reception unit being arranged so as to face the data transmission unit, the data transmission unit and the data reception unit being arranged on two separate parts of the machine, of which one is movable and the other one is fixed.

Abstract: The invention relates to Jacquard selection in a textile machine characterized by a selection jack (1) provided with a spring (M1) by which, after the preselection phase in which the jacks are guided by a cam inside the cylinder, they move out under the pressure of the spring, thus modifying the path or the functions; or remain contained and/or retained in the cylinder by a selector and/or other member disposed frontally which prevents their moving out. According to circumstances, the selector, even if fixed, can move vertically, horizontally and also radially, with minimum time and space, without lateral impact on the incoming butts and/or jacks. Finally, the actuators, together with the cams of the jacks and/or needles, are incorporated in a modular support to modify the type of selection and/or for textile operations other than the Jacquard type.

Abstract: A knitting machine comprises at least one knitting implement carrier (1) having tricks (10) and knitting implements (8) slidably mounted therein, a cam system for guiding the knitting implements (8) in pass or raise tracks (15, 16), control jacks (9) formed as two-armed levers associated with the knitting implements (8), which jacks have controllable raising butts (21) and armature surfaces and are mounted freely pivotable in tricks (10) of the carrier (1), springs (26) bearing on the trick bottoms for biasing the control jacks (9) and at least one selector station with a control magnet (25) and a presser cam system part (24) for so turning the control jacks (9) that their armature surfaces are applied to the control magnet (25) and are then selectively held or released from this.

Abstract: A jacquard pattern control mechanism for a circular knitting machine is provided in which a plurality of rocker bar supporting members are each slidable in one of the grooves along which one of the knitting elements move, a plurality of elongate rocker bars are pivotally mounted on one of unsaid plurality of rocker bar supporting members for movement about a medial pivot, the opposite end portions of the rocker bars being selectively movable between operative and inoperative positions and having magnetically attractable sections thereon, magnet attracting devices are operatively associated with the opposite end portions of the elongate rocker bars for selectively attracting one of the magnetically attractable sections at opposite ends of the rocker bars to pivot the rocker bars and selectively move one of the opposite end portions thereof to the other operative position and the other opposite end portion thereof to the inoperative position, the magnetic attracting devices comprising a permanent magnet and a p

Abstract: A device for needle-by-needle selection in circular stocking knitting machines is disclosed. An elastic lock pin or segment (19) is provided for each lower needle (13) of the type having an elastic deflection tail. The segment is carried by a crown (22) fixed with the cylinder and usually in a position shifted downwards away from the tail of the lower needle. A thruster (20) is provided under the lock segment, which can be moved upwards and is intended to deflect the lock segment (19) up to the level of interception with the tail of the lower needle (13). This results in a locking of the lower needle in the deflected, inoperative position. A selection electromagnet (21) is provided which can be activated and deactivated according to a program to hold or release the lock segment. The activation/deactivation keeps the inoperative lower needle locked or releases it because it is moved towards the outside into the operating position.

Abstract: An electromagnetically-operating Jacquard control device has an electromagnet (1) with a magnetic core (3), an armature (8) and a limit stop (14) for each controlling element (16) to be controlled. The limit stop can optionally be brought into the movement path of a hook (18) attached to the controlling element (16). Two lovers (5, 11) are provided, the first bearing the armature (8) and the second bearing the limit stop (14). These two levers are coupled to one another with positive engagement such that the forces are transmitted substantially perpendicularly to the plane formed by the limit stop (14) and the swivel pin (12) of the second lever (11). This enables wear-related incorrect operation to be avoided.

Abstract: A modified needle with associated actuation elements or knitting the heel in circular stocking machines, comprising a first conventional selection heel and an elastic extension having a second heel that can be selected for forming the sock and stocking toe and heel, the respective actuation elements being distributed independently of one another along two corresponding annular bands of the cylinder arranged at different levels.

Abstract: A jacquard pattern control mechanism for a circular knitting machine in which knitting instrumentalities are selected in accordance with a jacquard pattern and are moved between three positions, namely, welt, tuck and knit positions, by a selector jack, a rocker base, a rocker bar pivotally mounted on the rocker base and control cams for controlling the knitting instrumentality, selector jack, rocker base and rocker bar and electromagnetic selection mechanisms that attract selected portions of the rocker bar to determine to which position the knitting instrumentality will be moved, and wherein the selection mechanisms are more compact and have shorter strokes to permit selection of all types of knitting instrumentalities and all three positions without reducing the number of yarn feeds.

Abstract: A circular knitting machine and a jacquard pattern control mechanism therefor is provided in which knitting instrumentalities slidably mounted in grooves in a rotating member, such as a needle cylinder, sinker cap or dial, are controlled by a rocker bar supporting member slidably mounted in each groove behind the knitting instrumentality, the rocker bar supporting member having at least one butt thereon, a rocker bar pivotally mounted on the rocker bar supporting member and having magnetically attractable sections at opposite ends thereof, a magnetic attraction device selectively attracting the magnetically attractable sections of the rocker bar to pivot the rocker bar to control the selection of knitting instrumentalities to be moved from inactive to active positions and a cam system for moving the rocker bar supporting member and selected knitting instrumentalities.

Abstract: The magnetic selection ring has a ferromagnetic body defining a flange provided with recesses. Slots filled with diamagnetic material are provided in the recesses to form heads each accommodating the core of a respective release electromagnet. The selection ring is usable with selectors of the type provided with a shaped elastic portion, a lower heel, which is outwardly flexible for being affected by a lifting cam or inwardly retainable to avoid interference with the cam, and an upper heel, actuated by a lowering cam formed on the lower surface of a complementary ring for retaining the elastic portions of the selectors. The selectors have a lowermost tapering tab, which can be moved by a retraction cam into contact with the magnetic ring. When the tab is retained by the permanent magnets, the heel assumes the configuration for not interfering with the cam. The electromagnets are activatable for selectively releasing the selectors.

Abstract: The selector has a lower extension for retention by a fixed magnetic selection ring associated with a needle cylinder, and an upper shaped elastic portion for returning the lower portion of the selector towards the outside of a needle cylinder. A flat or inclined profile is defined uppermost on the selector for engagement with a correspondingly flat or inclined base of a sub-needle. A guide portion, having a longitudinal extension lying substantially parallel to the shaped elastic portion, is connected to the shaped elastic portion and is engageable with helical springs used for retaining selectors in needle cylinder grooves. The selector has an upper heel protruding therefrom at an opposite side with respect to said guide portion, and a lower heel extending parallel to the upper heel for engagement with a lifting cam.

Abstract: A needle selection device including a plurality of push jacks respectively mounted in the needle slots of the needle cylinder of a circular knitting machine, a plurality of lifting bars respectively mounted in the needle slots and selectively driven by the push jacks to lift respective needles, and an electromagnetic device mounted on the cam of the circular knitting machine and moved by it to pass from one lifting bar to another, wherein each lifting bar is balanced in one needle slot on a fulcrum at its center and moved by the electromagnetic device between a first position in which the lifting bar will be driven by the respective push jack to lift the respective needle, and a second position in which the lifting bar will not be driven by the respective push jack to lift the respective needle.

Abstract: In a textile machine, in particular in a knitting machine, with controlla working elements and an arrangement for selecting the working elements, the working elements are held in their initial position by a holding magnet and are selectively released from their initial position by an electromagnetic control system. In order to obtain a textile machine with a simple design, capable of being driven at high working speeds but in a reliable and safe manner, at least one holding magnet is rigidly fixed to the part of the textile machine that carries the working elements. A direct contact between the working elements and the moving control system is thus avoided, so that a contactless selection of the working elements is made possible.

Abstract: A selection device for an elastic selector for needles in a circular knitting machine which includes, in an upward region, an elastic portion that is adapted to move the lower portion towards the outside of the cylinder and has a lower heel that is adapted to move outward into a position for engagement on the part of a lifting cam; the selector continues, in a downward region, with a tab that is adapted to be attracted and retained by a fixed annular permanent magnet which is arranged towards the inside of a cylinder and at which one or more electromagnets are mounted; the activation of the electromagnets is adapted to selectively release the selectors which are otherwise retained by the permanent magnet during the rotation of the cylinder.

Abstract: A selecting mechanism for a circular knitting machine, including a hollow base, which holds pairs of selecting jacks at different elevations, and a selecting jack pushing-up device detachably fastened to the hollow base to hold pairs of pushing-up plates, wherein each pushing-up plate has a nose turned about a respective pivot between two alternative positions for controlling the positions of the pairs of selecting jacks for a full-stitch, half-stitch, or plain-stitch operation.

Abstract: The needle selection device has multiple selectors arranged in axial grooves formed in the skirt of the needle cylinder, each selector arranged below a needle and oscillatable in a radial plane of the needle cylinder from an active position, in which a butt protrudes radially from its groove, for the engagement of the butt with cams for actuating the selectors arranged around the needle cylinder to move the selectors along their groove in the needle cylinder so as to activate the overlying needle, to an inactive position, in which the selector is positioned in its groove in the needle cylinder so that it does not interfere with the selector actuation cams. The device has selector extraction elements to transfer the selectors from the inactive position to the active position and selection elements to transfer the selectors from the active position to the inactive position or to keep them in the active position.

Abstract: The device comprises, for each selector element, a high-speed electromagnet having a fixed core with a single coil, and an armature consisting of a lightweight blade. When the coil is energized, the blade is moved into one position, and is restored to another position by means of a compression spring when the coil is de-energized, with a response time of less than 4 ms. The electromagnets are housed in the support of a selection assembly, and packed in at least two offset rows. Each coil is energized at a first voltage and is subsequently maintained energized at a lower voltage.

Abstract: Apparatus for operating needles of a textile machine includes magnetically operated control flaps for operating the needles, and magnetic controls operable to actuate the control flaps. The control flaps include a flap structure and an armature disposed on the flap structure, the magnetic controls being operable to magnetically actuate the armature to thereby effect movement of the flap structure, whereby the movement of the flap structure actuates the needles.

Abstract: A circular knitting machine of elastic needle type provided with a cam for flexing all the needles into their trick before they are raised to seize the feed yarn, in which the selection between those needles to be maintained flexed and those needles to be allowed to return to their normal configuration is made by axially slidable sliders positioned below each needle contained in the tricks.

Abstract: A knitting machine comprises a needle cylinder, stitch-forming knitting needles, displaceable selector elements for initiating specific knitting operations, springs which bias the selector elements into a first position, mechanical control means which transfer the selector elements into a second position contrary to their biasing and electromagnetic selector means which comprise at least one activatable magnetic pole for holding the selector elements in their second position. The displaceable selector elements have a stop edge which cooperates in the second position with a counterstop edge stationary relative to the movement of the selector element. When the stop edge engages on the counterstop edge, the selector elements are located at such a small distance from the electromagnetic selector means, hereby forming an air gap, that their magnetic force is still sufficient to hold the selector elements in their second position.

Abstract: A circular knitting machine having a needle selection device and a device for axially shifting needles which has an axially movable cam. The axially movable cam defines a contour and is movable to three levels corresponding to a knitting position, a tuck position, and a float position. The device is arranged in correspondence with the feed stations of a circular knitting machine, such that butts of needles not moved into operation by jacks traverse the contour of the axially movable cam. The contour raises the needles not moved into operation by the jacks with a substantial delay with respect to other needles moved into operation by the jacks under control of the needle selection device.

Abstract: The knitting machine with needle selection device has a plurality of needles or sub-needles each having a body with at least one magnetized portion. A selection element faces the magnetized portion and is constituted by a plate which is physically separate from the body of the needle or sub-needle and is made of a material which can be magnetized. The selection device has a magnetizing device which acts controllably upon the selection element of the various needles or sub-needles in order to induce a magnetic interaction between the magnetized portion of the body of the needle or sub-needle and the selection element itself. Actuation cams act on the body of the needle or sub-needle, after the action of the magnetizing device, and cause a diversified actuation of the needle or sub-needle depending on the magnetic interaction induced between the portion of the body of the needle or sub-needle and the selection element.

Abstract: A circular knitting machine for manufacturing hosiery comprises a lower needle cylinder (1) having a cam section arrangement (5, 6, 7, 8, 9) and a verticle trick (2) grooved on the needle cylinder (1) near the arrangement (5, 6, 7, 8, 9). The cam section arrangement (5, 6, 7, 8, 9) defines a plurality of channels (13, 14, 15, 16). A sinker arrangement (3, 4) is disposed in the verticle trick (2) for verticle movement and has guiding butts (41, 42) alternately engageable with the channels (13, 14, 15, 16). The guiding butts (41, 42) are movable in the channels (13, 14, 15, 16) in a knitting direction (S) and a reverse knitting direction (S'). A plurality of needles (4') are engaged with the sinker arrangement (3, 4). Stitch cams (10, 11) are mounted to the cam section arrangement (5, 6, 7, 8, 9) for engaging the needle (4') when the needles (4') are moved in the knitting direction (S).

Abstract: An electromagnetic selector device comprising a single permanent magnet and a plurality of electromagnets, which are excited in contrast or in agreement with the permanent magnet, to form a plurality of selection positions on two fronts along which run the elements to be selected.

Abstract: A device for needle selection in a circular knitting machine consisting of springs lying below the elastic jacks and rotating with them, to be deformed axially and be retained in their deformed position or to be released therefrom by electromagnetic selectors, in order, respectively, not to retain the elastic jack and thus allow it to rise and activate its respective needle, or to retain the elastic jack flexed within its trick and thus not allow it to activate its needle.

Abstract: A knitting machine has a bed, knitting implements which are mounted displaceably in the bed and which each have at least an operating and a pivotably first control butt, and at least one patterning arrangement which has a cam portion intended for guiding the butts, with at least one respective non-knitting, tuck and knitting track formed by cam member, and a selector intended for pivoting the control butts, by means of which the butts are distributed to a respective one of said tracks. The selector has a first control unit for controlling selected knitting implements into the non-knitting track and a second control unit for selectively distributing the other knitting implements to the tuck or knitting track.

Abstract: A needle selection device for circular knitting machines for women's stockings, including a pusher jacks associated with each of a plurality of needles of a needle cylinder, each pusher jack having two heels including an upper heel interacting, in a selection position, with a lower cam and a lower heel interacting, in a selection position, with a pressure cam, acting in a radial direction with respect to the cylinder, and with a raising cam. A horizontal collar is provided formed of non-magnetic material anchored around the needle, the collar defining a plurality of radial grooves. A plurality of horizontal elastic selector jacks are positioned in one of the radial grooves. A permanently magnetized ring is fastened below the collar, facing the selector jacks, spaced a distance from the selector jacks to retain said selector jacks only when said selector jacks are inclined downwardly.

Abstract: A circular knitting machine in which the inactivation or activation of a vertical jack below each needle is determined by a flexible fork located radially of the cylinder within a ring structure completely surrounding the machine cylinder and rigid therewith. A number of forks and radial grooves equal to the number of needles is provided, said forks being able to flex within said grooves and being selected by a magnetic force.

Abstract: Needle selection is effected by an assembly fixed on and rotating with the cylinder and consisting of a plurality of horizontal jacks selected by controlled electromagnets, and an electronic control system. The assembly is provided with Hall sensors which receive magnetic pulses from stationary coil positioned around the rotating assembly.

Abstract: A setting device for needle selection devices of a multisystem circular knitting machine includes a portable displacement unit connectable to individual needle selecting apparatuses of the systems of the machine and a separate programmable electric control unit connected to the setting unit by a cable. The displacement unit has a setting member displaceable against selecting blades of a needle selecting apparatus and being activated according to a program by a solenoid. The displacement unit is provided with a display and control buttons for entering and displaying a code number of a system to be set. The control pulses for the solenoid and for the movement of the setting member are delivered according to a program by the separate electric control unit.

Abstract: This device relates to a circular knitting machine in which the inactivation or activation of a vertical jack standing below each needle is controlled by a horizontal jack. The horizontal jack is located in a radial position relative to a cylinder within a ring structure. This ring structure surrounds and is rigid with the machine cylinder. It contains, in a number equal to the number of needles, radial grooves. The horizontal jacks slide radially in the grooves as well as horizontally. They are selected by electromagnetic retention devices with which each jack is provided and which are mounted on the ring structure. When the devices are energized, they retain the horizontal jacks in their outer position to activate the corresponding needles. When they are not energized, the electromagnetic devices allow the horizontal jacks to return to their inner position by a thrust spring, to leave the corresponding needles in a rest postion.

Abstract: A yarn changing apparatus for a multi-feed circular knitting machine includes lever arms connected to yarn feeding fingers. Vertically moveable sliders operatively connect to the lever arms and are slidable between raised and lowered positions to move the lever arms and yarn feeding fingers connected thereto, so as to place the yarn feeding fingers into operative and nonoperative positions. Vertically moveable rocking jacks pivotably connect to the sliders with each rocking jack including pivotably moveable upper and lower ends. Remotely programmed selection units are operative with the rocking jacks for aiding in pivoting the rocking jacks. The remotely programmed selection unit includes upper and lower electromagnetic block units which are energizable and act upon selectors to engage and pivot the rocking jacks.

Abstract: A restoring device for a needle selecting apparatus of a circular knitting machine has a housing mounted on the needle selecting apparatus, and a slider located in the housing for each set of selecting plates of the selecting apparatus. Each slider is displaceable in a direction of displacement of the selecting plates and is provided with a pressing surface and a withdrawal surface. The pressing and withdrawal surfaces of each slider act on all selecting plates of a respective set to displace the selecting plates to their operating and rest positions, respectively.

Abstract: The device has a box-like supporting structure which slidably accommodates at least one slider arranged laterally facing the needle cylinder of the machine and is movable, by virtue of the action of a linear motor, along a direction which is radial to the needle cylinder. The slider is rigidly associated, with its end which protrudes out of the box-like structure, with a knitting cam which is selectively engageable with needle actuation elements by moving the slider. The slider is constituted by a shaft which is slidably supported, along its axis, by the box-like structure by means of a first bearing which is arranged inside the box-like structure and has balls partially accommodated in longitudinal seats defined on the outer surface of the shaft and in seats correspondingly defined on the inner surface of a bush which extends around the shaft and is prevented from rotating about its axis.

Abstract: An electromagnetic device is provided for use, for example, as a yarn brake, a rely nozzle valve, a weft yarn stretching nozzle and the like. The electromagnetic device has a pole piece associated with a winding connectable to an electric line. A spring strip is fixedly mounted at one end and projects over a curved abutment surface on the pole piece. In the absence of a magnetic field, the spring strip is disposed in spaced relation to the abutment surface. When a magnetic field builds up in the winding and the pole piece, the free end portion of the strip engages with the abutment surface of the pole piece along an increasing length, for example, to brake a yarn therebetween and, as the magnetic field intensifies, more and more zones of the spring strip engage the pole piece. Consequently, the initial speeds at which the strip moves at engagement and upon cessation of energization of the winding are relatively high.

Abstract: The device includes at least one selection lever, one end whereof is arranged laterally facing the needle cylinder at the level of a heel of selection elements accommodated in the grooves of the needle cylinder below the selectors or sub-needles. The selection lever is movable towards or away from the needle cylinder from a first position, in which its end engages the heel of the selection elements, to a second position in which it does not interfere with said heel. The end of the selection lever has a rising portion which in the first position raises the selection element when the needle cylinder rotates with respect to the selection lever. As an effect of this lifting, the overlying selector is engaged by a lifting cam arranged facing the needle cylinder so that the overlying needle is moved to knit.

Abstract: This invention relates to an electronically controlled electromagnetic needle selection device which is used in the in a circular knitting machine. The device operates in the direction of the needle cylinder rotation and can include reciprocating motion. It is used particularly for making ladies' stockings and includes a cylinder with needles and elastic pusher jacks which are housed in corresponding longitudinal grooves. Each pusher jack is provided with three butts: an upper butt which cooperates with a first ring cam for lowering into the selection position, an intermediate butt which cooperates with a presser cam in the centripetal direction, and a lower butt provided with a cam for raising the pusher jack to activate the corresponding needle. The device also has a rim structure fixed to the needle cylinder and provided, in line with each pusher jack, with a radial horizontal groove for housing an elastic selector.

Abstract: In a knitting machine, a selection latch having two end positions for selecting a knitting-needle is actuated so as to engage a cam which moves the selected latch towards a second end position. The actuation of the selection latch in two stages reduces the displacement brought about by the actuating means and increases the selection frequency. According to the invention the latch is actuated by a thin needle similar to a needle-printer needle, producing an impact on the latch, resulting in transmission of motion with high efficiency and moving the latch into an intermediate position in which the cam brings the latch into its second end position. This substantially eliminates friction between the actuating means and the latch, and enhances the selection frequency.

Abstract: The selection system is based on a reciprocal action of a selector jack for each needle and operative cams, such that each selector jack may not be selected or may be selected one or two times during its engagement with one same operative cam, owing to the existence of two electronic controls for each cam. Each control includes a box having a plurality of selectors for the jacks, and the selectors may be moved from a retracted inoperative position to an extended activated position for a very short period of time due to a special arrangement of magnets.