Abstract: A device for monitoring the yarn reserve in weft feeders for textile looms, comprising an active element which is capable of detecting the presence of the turns of yarn that constitute the yarn reserve wound on the drum of the feeder. The device is associated with an intermediate support of its own which is pivoted to the fixed frame of the feeder and can oscillate about its own pivoting fulcrum in contrast with the action of a contrast spring in order to vary the contact pressure or inclination of the active element on, or with respect to, the drum of the feeder; the oscillation for adjusting the intermediate support of the monitoring device is produced by a downward-acting adjustment screw which acts on said support.

Abstract: A method and apparatus for monitoring the scanning conditions when controlling a yarn feeding device including a storing surface for the yarn, a drive motor, a sensor device having at least one sensor oriented towards a scanning zone defined in the yarn feeding device, and a control circuit connected to the sensor device. The sensor generates an object-output signal for control purposes in response to the movement, absence or presence of an object in the scanning zone. A test signal is formed from and substantially synchronously with the object-output signal, and the signal level of the test signal is compared with an alarm threshold value representing a just barely acceptable deterioration level of the scanning conditions. An alarm signal is generated when the signal level of the test signal falls below a predetermined threshold value.

Abstract: A yarn feeder device for feeding elastic (soft) yarns to a yarn consuming station whose yarn demand fluctuates over time. The device has a control unit which ascertains the current yarn demand or to which the current yarn demand is reported. In accordance with this demand, a yarn feed wheel is driven at a rotary speed suitable for the yarn demand. The yarn travels via a tensioning device to the yarn feed wheel. The tensioning device is arranged such that the yarn is stretched in a defined way. As a result, a fixed association between a desired yarn feed quantity and the rotary speed of the yarn feed wheel is enabled.

Abstract: A yarn supply apparatus with dual feeding features is disclosed. The apparatus is characterized in that a yarn guide arm is fabric yarnedly secured on the front top side of a support holder of the apparatus having an inner and an outer yarn eyes provided thereon in order to enable a short and a long fabric yarn knittings without a yarn brake detachment-and-mounting procedure.

Abstract: A device for feeding an elastically extendable yarn to hosiery knitting machines, which includes a positive yarn feeder composed of two mutually opposite contrarotating rollers which have parallel axes and between which the yarn to be fed passes. Elements are provided for rotationally actuating at least one of the rollers about its own axis with a rotation rate which can vary on command. Downstream of the positive feeder along the yarn feed direction, there are arranged elements for detecting the tension of the yarn and a programmable control and monitoring unit which is operatively connected to the detector elements. The control and monitoring unit compares the yarn tension detected by the detector elements with a yarn tension which is preset in the control and monitoring unit.

Abstract: In a yarn feeder used in a jacquard knitting machine, each yarn tension bracket includes a casing covered with a cover plate, a pivot shaft supported on bearings between the casing and the cover plate, a yarn tension rocker formed of two wire rods respectively fastened to two opposite round pins at two opposite ends of the pivot shaft outside the casing and the cover plate and turned with the pivot shaft to adjust the tension of yarns passing through upper and lower thread eyes at the wire rods, and an auxiliary yarn guide with upper and lower thread eyes fastened to the casing and the cover plate to guide two yarns passing through the upper and lower thread eyes at the yarn tension rocker and to prevent the yarns from being tangled.

Abstract: A yarn supply apparatus for elastic yarns in knitting machines having abruptly fluctuating yarn consumption. A yarn wheel, around which the yarn to be supplied is wrapped, furnishes the yarn to a yarn store located between a knitting station and the yarn wheel. A closed-loop controller responsive to yarn tension operates the yarn wheel via a low-inertia drive motor. The yarn store is embodied as an essentially straight segment of yarn in the yarn path in which yarn is guided so it can expand freely. The combination of a low-inertia drive motor, a yarn store that utilizes the intrinsic elasticity of the yarn, and a closed-loop controller that monitors the yarn tension by means of a sensor device makes it possible to use the yarn supply apparatus for supplying elastic yarns and to keep the yarn tension essentially constant even when the demand for yarn fluctuates abruptly.

Abstract: A yarn brake has a bearing pin, two brake elements for braking a yarn, the brake elements being mounted on the bearing pin for being rotated by the yarn in friction engagement with the brake elements when the yarn is consumed, at least one of the brake elements being axially movable on the bearing pin, a bias mechanism holding the two brake elements in abutment, and a support, the bearing pin being freely rotatable in the support by the brake elements during use of the yarn brake.

Abstract: A rotation speed control apparatus for a yam winding storage drum has a unit for driving the drum, and a scanning device for scanning the quantity of storage windings on the drum which provides signals proportional with the number of the storage windings. The scanning device includes a light source for generating light beams along optical paths guided so as to impact the surface of the storage windings wound on the drum. A plurality of sensors are arranged so as to receive a related light beam along a respective light path with a light intensity varying in proportion with the number of storage windings. A plurality of light guiding blocks are each arranged on a respective one of the optical paths between the storage windings and the sensors.

Abstract: A thread feeder with a thread-twisting preventive device for a knitting machine is provided. The thread-twisting preventive device includes at least a protective piece which is substantially cup-shaped having a wall and a coupling hole. The coupling hole allows the cup-shaped protective piece to be axially coupled to the spinning axis on the thread feeder, thus allowing the wall of the cup-shaped protective device to surround the spinning axis. Since the protective piece is a fixed piece that covers the exposed part of the spinning axis, broken threads will not be pulled by the spinning axis and twisted around the same. Production of fabrics thus will not be delayed due to broken threads twisting around spinning parts of the knitting machine.

Abstract: A yarn supply reel and yarn guide for use in a knitting machine includes a driving reel with a plurality of spaced struts arranged in an annular shape and a driven reel with a plurality of spaced ribs arranged in an annular shape. The ribs have slanted and curved lateral surfaces to allow a yarn to be wound around thereon and then slip and wind around the struts smoothly. The yarn guide has smooth surfaces and edges and enables a yarn coming from the yarn supply reel to pass therethrough to a needle at a constant tension without sticking. Both the yarn supply reel and the yarn guiding yarn are made by plastics injection molding for reduced cost and enhanced quality.

Abstract: An improved yarn receiver for knitting machines includes a driving reel integrally formed by plastics injection with a transmission shaft in the center and a plurality of spaced L-shape struts projecting upwardly around the smooth rim of a bottom flange. A driven reel with a plurality of spaced pillars mating with the sheaths of a bushing reel engages with the driving reel. The struts and pillars are positioned in a staggered manner with each other. A brush member located on a yarn feeding member has its brush tip located between the gap formed by the struts and the pillars. The brush member prevents the yarn wrapped around the struts and pillars from falling off and also discharges accumulated yarn waste therefrom after reaching a predetermined weight.

Abstract: For determining the movement of a thread supply boundary on the storage surface of a thread storage and feed device, different scanning properties of at least two circumferentially offset circumferential sections of the storage surface are scanned simultaneously and converted into storage surface signals which are nonidentical among themselves and which are discriminated from thread signals which are identical among themselves. The thread signals are generated by sensors which scan a scanning zone on the storage surface and formed on the basis of a scanning property of the thread windings when the thread supply is present in the scanning zone. The thread storage and feed device is provided with first and second circumferential sections on the storage surface differing from one another with respect to their scanning properties, and a plurality of sensors.

Abstract: The invention relates to a thread feeder device with continuously adjustable thread extraction tension for textile machines, particularly for textile machines having uneven thread consumption, with a storage body that carries the thread without slippage and is directly or indirectly actuated by a motor and whereon the thread, in order to form a storage reserve winding, is wound tangentially and (according to requirements) is unwound axially between its front face, provided as a braking surface, and a complementary braking surface that rotates in the same direction. According to the invention, the complementary braking surface is formed by a thin, flexible circular disk the diameter whereof is slightly larger than the diameter of the front face of the storage body. The elasticity of this disk is used to achieve a more uniform thrust pressure on each point of the braking surface of the storage body, and to secure the thread more or less tightly by means of a more or less intense thrust pressure, i.e.

Abstract: A pneumatic thread feeder in knitting machines or the like having at least one tube in which a passage is provided having an outlet to be directed towards the needle work region of a knitting machine; injection means for injecting air through the tube; means for actuating the injection means; and abutments that form a path for the approach of the thread to the inlet of the tube. The tube is served by a thread takeup element that is arc-shaped and is pivoted to a supporting structure about an axis located on the concave side of the body of the takeup element. The takeup element has, proximate to one of its ends, a passage for the thread, and is arranged so as to move transversely with respect to a portion of the path for the approach of the thread to the tube when it is turned about the axis.

Abstract: A yarn feeding device includes a mounting frame fastened to the frame structure of a circular knitting machine to hold a yarn guide plate, a driving wheel, a yarn guide bracket, a plurality of plastic yarn tension guides, and a plurality of yarn feeding wheels. Each yarn tension guide has a rotating tension adjustment plate stopped at the respective yarn tension guide rod and turned to adjust the oscillating amplitude of the respective yarn tension guide rod so that the degree of circumferential engagement of the respective yarn with the wheel surface of the respective yarn feeding wheel is relatively adjusted.

Abstract: Process and machine for manufacturing elastic bands with small diameter tubular fabric knitting machines of the single-feed type with fixed needle cylinder and revolving cam drum, wherein a bobbin holder of an elastic thread is autonomously supported above the needle cylinder and coaxial with respect to the needle cylinder. The revolving drum has a taking arm which guides the elastic thread and the inelastic thread without mutual contact up to the immediate vicinity of the needle cylinder. A sensor detecting the diameter change of the elastic thread cylindrical bobbin is operatively connected to a driving device with regulated speed control which keeps constant the elastic thread feed. The tubular bands obtained are knitted bands with at least one inelastic thread and at least one bare elastic thread.

Abstract: In a yarn feeder (2), the yarn feed may be effected by a yarn reserve (11) support spool (2), which is arranged to rotate by means of a motor (60). The yarn is taken up by and unwound from the spool as the latter rotates. Unwinding of the yarn reserve on the spool is not controlled. The size of the yarn reserve is monitored and yarn take-up is controlled accordingly. The unit also includes electrically contactless sensing and control devices (3), which are preferably located immediately adjacent to the rotary spool. The unit (3) is designed to sense the presence and quantity of yarn on the yarn reserve support surface (10) of the spool. The unit also controls the said motor.

Abstract: A strand feeding device can be switched from positive strand feed to intermittent strand feed and vice versa. This is achieved with the aid of a strand guide element which is associated with a lower edge of a storage drum and can be adjusted by an electromagnetic setting member selectively to a first position allowing the intermittent strand feed and a second position producing the positive strand feed.

Abstract: An apparatus capable of feeding a roll of yarn wound around a bobbin to a knitting machine without having to apply tension to the yarn is provided. In the yarn feeding apparatus, the bobbin mounting frame for mounting the bobbin into operation position is rotatably supported by one end of a linkage bar. The other end of the linkage bar is pivotably coupled to a fixed horizontal bar. A driving shaft is positioned beneath the bobbin mounting frame such that the circumference of the yarn roll comes into contact with the driving shaft. The bobbin is thus driven to rotate when the driving shaft rotates. With this arrangement, the feeding of the yarn to the knitting machine would be smooth and stable in speed. The drawback of having to replace a new roll of yarn before the old one is completely used up is eliminated.

Abstract: A yarn-delivery device serving as a yarn feeder for textile machines is proposed. To provide an optimum regulation of the yarn transport even for more than one yarn, the yarn-delivery device has a storage drum which is made in one piece with the rotor or armature of the drive motor and which has on its circumference a wire lattice formed by wires arranged in an X-shaped manner. To regulate the yarn tension from the consumer, there is a yarn-tension sensor, the mechanical deflection of which causes an electronic adjustment of the drive motor.

Abstract: An positive yarn feeding device including a support body mounted on a beam member, a multilayer yarn feeding wheel having frictional yarn feeding periphery, multiple drive pulleys, multiple tension controllers each having a movable yarn guiding arm, and a yarn braking assembly. The yarn feeding wheel and the drive pulleys are rotatably concentrically secured in a bearing of the support body and a clutch is disposed between the pulleys for optionally adjusting the operating speed of the roller. Each movable yarn guiding arm is disposed with a yarn guiding eyelet through which a yarn passes. The movable yarn guiding arm is pivotally supported between a first position where the yarn guiding eyelet is away from the frictional periphery of the yarn feeding wheel, and a second position where the yarn guiding eyelet is adjacent to the frictional periphery thereof.

Abstract: In order to process yarn preliminarily, and to change over yarn precisely at a desired knitting position, the yarn fed to a flat knitting machine is processed by a yarn processing device. To change over the yarn at a changeover position of knitted fabric, it is necessary to actuate the yarn processing device preliminarily at an actuating position C. A controller calculates the actuating position from a set value in a setting circuit and pattern information from a memory. When an encoder detects that a position of feeding the yarn to a knitting needle has reached the actuating position, the yarn processing device is actuated. The length of the yarn from a yarn processing position to the actuating position is nearly equal to the sum of a knitting loop length from the actuating position to the changeover position.

Abstract: A device for verifying the correct employment of the yarns used by a textile machine, which enables improper use, inexact feed velocity of each yarn used and inexact length of the machine operating cycle to be indicated, and in addition measures the consumption of each yarn used for the fabric.

Abstract: Yarn feeding apparatus for a knitting machine in which a rotary cap driven by a motor is provided at the top of a storage drum. Optionally, an idle pulley may also be provided adjacent the lower portion of a driving wheel and a mechanism for shifting the driving belt alternately between the driving wheel or idle pulley, so that the driving of the machine is stopped in case of abnormal tension imparted to a feeding yarn. Shifting to either constant feeding or free feeding of yarn is possible to be executed automatically. Automation is possible for work for forming the yarn loop on the storage drum without requiring manual operation one-by-one by an operator. Therefore, it helps avoid poor knitting quality and thus avoids cutting off the yarn. It serves to automate the knitting machine so that constant feeding and free feeding of yarn are simply and conveniently executed.

Abstract: In an elastic yarn feeding device of a multi-yarn feeding circular knitting machine, a rotary drive shaft (18) is horizontally arranged above a circular horizontally rotary plate (6), and the drive shaft (18) is provided with a drive roller (17) to be slidable in a longitudinal direction of the drive shaft. The drive roller (17) is urged against the upper surface of the rotary plate (6). When the rotary plate (6) is driven to rotate, the drive roller (17) is also rotated together with the rotary plate. Both the drive roller (17) and the drive shaft (18) are varied in rotational speed by moving the drive roller in the radial direction of the rotary plate (6). The drive shaft (18) has a plurality of feed rollers (21a, 21b, 21c, 21d) secured to it, and pinch rollers (26a, 26b, 26c, 26d) are elastically pressed against these feed rollers, respectively. Elastic yarn (Y) is fed through between each pair of the feed roller and the pinch roller.

Abstract: A thread supply device for multi-system circular knitting machines has at least one warp beam accommodated rotatablhy in a receiving frame. On the warp beam are wound the threads associated with the individual knitting systems in the form of adjacent thread winding areas with equal axial lengths and equal diameters. The warp beam is connected with a drive and driven thereby in such a way that it always delivers to the knitting systems the average thread quantitites consumed thereby during operation of the circular knitting machine irrespective of the momentary diameters of the thread winding areas.

Abstract: In a method for positively feeding an elastic yarn to the knitting system of a circular knitting machine having a yarn feeder apparatus controlled by an electronic control unit, the apparatus of a take-out signal (A) initiates the count of a preselected number of position signals (p) before generating a stop signal (S), or otherwise the take-out signal (A) is disregarded for a preselected space of time at the end of which the stop signal (S) is generated, the number of position signals (p) or the space of time, respectively, being selected in accordance with the yarn quality and/or the distance between the yarn feeder apparatus and the knitting system. In this manner the yarn feeding operation is continued for relaxing the elastic yarn. The electronic control unit (3) of the yarn feeder apparatus (2) in the circular knitting machine (1) includes a delay circuit (19) for controlling the generation of the stop signal (S).

Abstract: A control system which allows a plurality of shapes to be knitted by a simple change of profile cam (80). The profile cam (80) controls in a desired variable manner the feed rate of elastic or ground yarns to control the shape of a garment. The shape can also be controlled by further profile cams (200, 202, 204) to control both elastic and ground yarns and in a dial and cylinder circular knitting machine to alter the dial height while the machine is in motion, thereby further controlling the width of a garment.

Abstract: A yarn feeder device for feeding yarns having elastic characteristics includes a feeder roll carried by a drive shaft which is journalled for rotation between a pair of shoulders. The feeder roll has a peripheral surface engaged by each peripheral surface of a pair of pressure rolls with yarn being fed tangentially therebetween. A pair of arms is pivoted to one of the shoulders and each arm rotatably carries one of the pressure rolls. A drive wheel is nonrotatably, but axially slidably connected to the drive shaft and is adapted for driving engagement with a rotatable drive disk. The drive wheel is also shiftable by a fork member along the drive shaft to vary the point of driving contact between the drive wheel and the drive shaft to thereby control the speed of the feeder roll.

Abstract: A yarn utilizing machine, in particular a circular knitting machine, having a plurality of yarn utilizing stations is provided with a corresponding number of supply means for the yarn. At each supply station, there is a yarn tension or yarn supply quantity monitoring device that cooperates with the yarn. This monitoring device includes a transducer cooperating with the yarn as well as a measuring circuit that emits a signal corresponding to the monitored parameter. To enable recognition of only the deviation of one parameter, independent of the absolute value of the parameter, means are provided for generating a reference value, which is dependent on the measured signals of all the measuring circuits. Each yarn utilizing station or each yarn supply means is provided with a deviation signal circuit, which has two inputs; at least a portion of the reference value is fed into one of the inputs, while at least a portion of the measured signal is fed into the other input.

Abstract: The yarn metering drum has a plurality of radially moveable segments, a pair of edge discs at the longitudinal ends of the segments and elements disposed of the longitudinal ends of the segments which are spaced apart a distance less than the length of a base of a segment in order to define a winding zone of the drum. The elements may be made integral with the edge discs or with the radially moveable segments. The elements prevent damage to the yarn by preventing the yarn from winding behind or below the segments.

Abstract: In the procedure for ensuring a precisely positioned introduction of a substitute yarn in a knitting machine by means of a substitute yarn (15) which is attached by a knotter (13) to a running yarn (12), the machine is halted at the desired position for the change of yarn before or after formation of the connecting knot (16) and afterwards the length of yarn located between the knotter (13) and the yarn working position is drawn out past the connecting knot (16) and taken up to one side and the machine is only started up again when the yarn feeder (11) is feeding the substitute yarn.

Abstract: A yarn feeding device comprises a stationary storage drum from which the yarn can be withdrawn. The yarn feeding device can be operated at a positive feeding mode and at a non-positive feeding mode by means of a rotatable yarn guiding member arranged at the withdrawal end. The yarn guiding member comprises at least one yarn engagement element adapted for engaging the yarn when the rotational speed of the yarn spiralling around the withdrawal end of the storage drum tends to exceed the rotational speed of the yarn guiding member. The yarn engagement element comes out of engagement with the yarn when the rotational speed of the guiding member exceeds the rotational speed of the yarn spiralling around the withdrawal end of the storage drum.

Abstract: A yarn supply apparatus for textile machines, particularly for knitting machines, has a rotatable yarn supply means supplying yarn under essentially slipless conditions to the textile machine; a speed controlled motor coupled to the yarn supply means controls the rotation of the yarn supply means. A movable yarn tension element is positioned in the path of yarn from the yarn supply means to the textile machine and is subjected to a bias force means that determines the yarn tension. A yarn reserve zone is formed in the path of the yarn from the yarn tension element to at least one of the yarn guide elements, the size of this zone depending on the position of the yarn tension element. Coupled with the yarn tension element is a transducer that provides a signal representative of the position or movement of the yarn tension element to an electrical circuit that includes the drive motor.

Abstract: In a method and apparatus for adjusting the length and the mesh structure of a knitted article produced on a flat knitting machine, a yarn tension sensor is provided in the path of the yarn to be knitted for controlling the yarn tension, which sensor controls a yarn brake and/or a yarn restoring spring in the path before the yarn tension sensor via a process controller.

Abstract: A plurality of yarn guides causes a yarn being drawn from a yarn package or the like to be directed towards a needle of a textile machine along a path which forms at least two tangential arcs with the cylindrical surface of a rotatable feed drum. When the yarn is subjected to tension, as when it is required by the needle, it presses against the drum and the yarn is pulled along by the rotation of the drum. Enough friction is provided on the surface of the drum so that it will pull the yarn. When the tension is released, there is no yarn feed.

Abstract: A yarn supply element (5, 150) that supplies the yarn substantially without slip and is rotatably supported has yarn guide elements (14, 15, 16; 158) and is coupled to an electric motor (3) of regulated frequency that drives it. In the yarn travel path following the yarn supply element, there are yarn tension sensing means (21) that monitor the yarn (17) unwinding from the yarn supply element and that emit and electrical signal that is supplied to a control circuit (52), which supplies the motor with a frequency signal. To assure satisfactory yarn supply even in the event of abrupt changes in yarn utilization, a device (21, 19) for forming a yarn reserve is provided along the yarn travel path following the yarn supply element. The size of the yarn reserve is dimensioned to be sufficient to cover the yarn requirement during start up of the motor. Associated with this device are means (28, 50-55) for automatically refilling the yarn reserve to an original size no later than after the startup of the motor.

Abstract: A loom left yarn store receives yarn being supplied from a weft package (5) and makes the stored yarn supply available to be drawn off from the store intermittently for picking into the shed of a loom. The store includes a stationary drum (11) which is supported by way of its outer periphery and which is adapted to receive a yarn supply (51) to be stored. A winding element (14) rotates around the drum periphery (111) and has an element (142) for entraining the weft yarn (52). One or more yarn entraining elements (142) can be brought into and out of operation in accordance with a program and when in operation can wind yarn on the drum periphery (111). The drum (11) is supported by way of its outer periphery horizontally by magnets or vertically by means of brushes. The winding element (14) is a ring which rotates continuously around the drum periphery and from which at least one pin (142) engages periodically in a recess (111) in the drum.

Abstract: A yarn feeding device adapted for positively feeding elastic yarn comprises an electric motor, a speed sensor for the speed of the knitting machine and a control unit connected to the electric motor and to the speed sensor. An optimal dynamic behavior of the yarn feeding device is obtained by making use of a rotatable drive cylinder connected to the electric motor, of a rotatable guide shaft supporting the yarn supply spool, which shaft is slidably arranged such that the yarn supply spool is kept in permanent contact with the drive cylinder, wherein the control unit drives said rotatable drive cylinder with a variable speed depending on the actual speed of the knitting machine and on a yarn demand signal, wherein the range of yarn feeding speeds is limited by predetermined minimum and maximum values.

Abstract: The thread feeding apparatus for double needle bed knitting machine to form tubular fabric comprises at least two thread-guides for the same number of thread feed systems for the same fabric, said thread-guides are displaced the one relative to the other upon the passage between one needle bed and the other and upon the reversal of the knitting direction, in order to maintain the same precedence order of the thread-guides in respect to the instantaneous direction of motion. In order to ensure the unwinding of the yarns with no crossing thereof, said yarns are unwound from bobbins of yarn which are co-axially disposed in a row, holes or other equivalent thread guiding means being provided, which guiding means rotate preferably with a continuous motion.

Abstract: In the yarn tension regulating device for knitting machines in which the yarn (25) runs through a yarn tension sensor (24) and a yarn brake (20) automatically adjustable in dependence upon the indication of the yarn tension sensor, there is located directly in front of the automatically adjustable yarn brake (20), in the direction of travel of the yarn, a yarn forwarding device, in particular a yarn storage feeder (13), by which the tension imparted to the yarn on its path from the yarn spool to the yarn brake is relieved. Between the yarn brake (20) and the yarn tension sensor (24), which follows it in the direction of movement of the yarn, is located a known yarn take-up (21), whereby the automatically adjustable brake (20) constitutes the yarn brake usually provided for this yarn take-up.

Abstract: A yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines has a feed element which advances the yarn with its circumference. The feed element is rotatably supported on a holder which is arranged to be secured on a carrier and has yarn guide and/or monitoring devices for the yarn being fed to and/or delivered by the feed element. The feed element is driven by a regulated electric motor disposed on the holder. To provide for yarn feeding apparatus which is both compact and inexpensive, the electric motor is a stepping motor coupled to at least one yarn feed element, which advances a yarn in a slip-free manner with its circumference, each element having its own yarn guide and monitoring devices associated with it.

Abstract: An arrangement for positively supplying elastomer fibers in a textile machine, comprises a device supplying a non-elastic filament fiber, a drive for driving the non-elastic filament fiber supplying device, a yarn spool for an elastomeric filament, a freely rotatable holder for the yarn spool, a drive roller arranged so that the yarn spool abuts against the drive roller over a predetermined abutment length, the drive roller being connected with the drive means and having a length which is greater than the predetermined abutment length, the drive roller having an axis extending in a predetermined plane, and a support which supports the spool holder and is longitudinally displaceable along a line such that the line or its projection extends in the plane of the axis of the drive roller and at an acute angle relative to the axis of the drive roller.

Abstract: The present invention relates to a dispensing device for yarn which includes a loose skein holding section and a pair of feed rolls having a bite therebetween to move yarn from the skein holding section to a discharge side. A yarn gathering guide is positioned between the skein holding section and the feed rolls and a loop separating chamber is located between the skein holding section and the gathering guide. The feed rolls are responsive to a switch which is activated by tension on the yarn on the discharge side.

Abstract: A yarn supply apparatus for yarn-using textile machinery has a rotatable yarn supply element (4) supplying yarn under slip free conditions at a predetermined tension, which is driven by a speed-controllable electric drive motor (6), the speed of which is controlled in accordance with the output signal of sensing means (7, 9) monitoring the travel speed of the yarn (11) supplied by the yarn supply element. In order to provide an apparatus which operates independently of external synchronizing means, the arrangement is such that the speed of the drive motor is synchronized with the sensing means output signal (36), which is representative of the yarn supply speed, and the sensing means (7, 9) are located at a distance behind the yarn supply element (4), as viewed in the direction of yarn travel.

Abstract: A simplified strand storage and feeding device having a rotatable spool about which a traveling yarn is transiently wound while being fed to a textile machine, utilizes a noval driving arrangement for rotation of the spool, including a pulley operatively affixed to the spool and having plural radial teeth circumferentially spaced about one side of a belt receiving recess in the pulley and a driving belt having compatible edge notches meshing with the pulley teeth. The edge notched configuration of the belt provides positively timed driving of the device while also being spliceable by mechanical interconnection of separate belt ends, so that the belt may be of non-endless form for ease of installation and breaks therein may be easily repaired by splicing. A slidably movable yarn withdrawal guide eyelet is provided for withdrawing yarn from the spool either tangentially or generally axially therefrom for operation of the device in either a positive or demand feeding mode.

Abstract: A yarn feeder for a circular knitting machine having stripers receiving the yarns from the machine creel, each yarn following a set route through a plurality of fixed eyelets and moving eyelets located on a pivotable arm. The pivoting of the arm causes the length of yarn comprised between the eyelets to move between two rollers the rotation of which pulls the yarn along from the creel and delivers it to the needle which previously, while the arm was being caused to pivot, received the loop of yarn contained between two moving eyelets and a fixed eyelet.

Abstract: A circuit receives a signal indicative of each loop of weft yarn being drawn off a cylindrical storage member and computes based on this data the time required for a given number of loops to be drawn off. The calculation includes an allowance for the time required for mechanical components associated with the releasing of the weft yarn from the storage device to actually reach a weft yarn release position and the time required for the calculation per se to be performed.

Abstract: A device for thermo-fixing tapes as they are taken up from the knitting machine.