Abstract: Device and process for the automatic elimination of the defective start and end portions from packages of yarn fed to the units of an automatic winder using the same members thereof for reattaching the ends eliminating said portion from them, by suction with the suction nozzles for capturing and moving the ends, for a predetermined length and then joining its ends according to the normal reattachment of the yarn.

Abstract: Thread-guiding device for collecting spun yarns on bobbins, particularly for open-end spinning frames, constituted by a common thread-guiding rod which carries the thread-guides for the spinning stations, said rod being operated in alternative movement in front of the bobbins being formed by a linear electric motor driven by the control unit of the spinning frame in its alternate backward and forward movement as regards instantaneous speed, amplitude of excursion, and axial coordinates of the ends of the travel of the thread-guiding rod.

Abstract: Thread-guiding device for collecting spun yarns on bobbins, particularly for open-end spinning frames, constituted by a common thread-guiding rod which carries the thread-guides for the spinning units, driven in alternate movement in front of the bobbins being formed by the motion of a driving means controlled in turn by a motor capable of alternate rotation and controlled by the control unit of the spinning frame in its alternate clockwise/counterclockwise movement as regards instantaneous speed, amplitude of angular excursion, angular coordinates of the ends of its travel.

Abstract: A device for collecting yarns on conical reels which compensates for the take-up pulsations of the thread winding onto the conical reel. The device comprises a fixed bar compensator at an adjustable oblique angle with respect to the winding line of the thread which varies the length of the free path of the traversing thread.

Abstract: A reel-stick arm for winding yarn with regulated pressure between the reel and its actuation roller, particularly for double-twist twisting frames, comprising automatic means for balancing the effect of weight variation of the reel being formed, means for automatic raising of the reel-stick arm, and automatic means for clamping the arm in the raised position, said raising and clamping means being co-ordinated by interlocking means.

Abstract: A spool loading and centering device for loading and centering spools on support plates in order to send the said spools for winding. Each support plate has a rod and centering and restraining springs. The spool loading and centering device includes a spool presentation and centering device for presenting and centering of each spool onto each support plate and a spool fitting device for fitting the tube of each spool onto the top of the rod of each support plate. The spool fitting device travels a path which corresponds to fitting of the spool, as far as its base stop on the support plate.

Abstract: An improved system for moving the spools and tubes on the trays of automatic spoolers, where the spooling units composing the machine are at their outlet connected to a discharge circuit fitted with a switch capable of routing the trays on a return path, or switching them to a "stand-by" circulation on the circuit.

Abstract: A caddy for packages having tubes for use in a yarn production process includes a disc-shaped base in which there is coupled a hollow tubular peg about which a package support slider is slidably mounted coaxial to the peg, to offer to the package mounted on the peg a level-adjustable support.

Abstract: A method and device for the continuous automatic monitoring and control of the tension to which yarn is subjected in a winding unit, in particular in an automatic bobbin winding unit, in which along the travel path the clamping force of the braking washers on the yarn is continuously and automatically controlled on the basis of parameters defining the type of yarn being wound and the operational, technical and geometrical characteristics of the feed package being unwound and those of the overlying bobbin under formation.

Abstract: A conveyor system for an automatic coning machine having coning units for unwinding thread from spools carried by disks. The system has a feeding conveyor for transporting the spools on carrying disks to the coning machine and a removal conveyor for transporting exhausted spool carrying disks from the coning machine. Passages traverse adjacent coning units which are interconnected to and between the conveying and removal conveyors. Feeders are provided for, at least, the feeding conveyor. The feeders are connected to and movable with the feeding conveyor, wherein the feeders are spaced apart from one another and wherein each of said feeders includes an engaging member for contacting a spool carrying disk and moving the spool carrying disk along the feeding conveyor, and a jutting member movably connected to the feeder which contacts the engaged spool carrier disk for guiding the spool carrier disk in a desired position along the conveyor.

Abstract: A device for regulating and controlling the unwinding tension in a double-twist twisting frame, having a member which is mounted coaxially, in an idle and rotatable manner, on the respective pin of the unwinding packages. The device is provided with elastic yieldable elements which project radially from the pin to engage unwound yarn during the depletion stage of the feed packages.

Abstract: A conveyor system for an automatic coning machine having coning units for unwinding thread from spools carried by disks, wherein the system has a conveyor for feeding the spool carrying disks to the machine. A plurality of paths are connected to the feeding conveyor, wherein a path traverses an adjacent coning unit and includes a standby position adjacent the feeding conveyor for receiving spool carrying disks and an unwinding station at the coning unit for receiving spool carrying disks from the standby position.