Abstract: A device and method for winding conical bobbins with yarn withdrawn at constant speed from individual spinning units, and comprising: a deflecting roller, which moves backwards and forwards by a swinging arm, which compensates for the different speeds at which the yarn is collected on the bobbin under formation wherein yarn is drawn into the storage position and is then released from this storage position, (i.e. returned). This returning operation releases the yarn from its storage position and replaces it (returns it), to its normal feed path; two proximity sensors which defines the range of swing of the yarn storage and return arm; an electronic control unit which receives an electrical signal from the proximity sensors when the arm swings stray outside the regular range to generate, an electrical control signal which activates a pressure variator which varies the pressure on a disc yarn tensioner. This changes the tension on the yarn to return the storage swing to within the regular range.

Abstract: A device and method for winding conical bobbins with yarn withdawn at constant speed from individual spinning units, and comprising: a deflecting roller, or similar element, which is connected to and moved backwards and forwards by a swinging arm which by storing and returning the yarn compensates for the different speeds at which the yarn is collected on the conical surface of the bobbin under formation wherein yarn is drawn into the storage position and is then released from this storage position, (i.e. returned).

Abstract: The method and device convert conventional shuttle looms into dummy shuttle looms, wherein weft yarns, unwound from stationary bobbins or the like outside the loom, are seized, pulled across the warp yarn shed and then released, by means of a so called dummy shuttle or weft gripper, at adjustably selected points along a dummy shuttle path extending along the loom slay, independently of the slay instantaneous position and movement direction. The slay motions and direction changes are utilized to selectively operate weft yarn bearers and weft gripper opening mechanisms for seizing the weft yarns and releasing the same, respectively, at the inlet and at the outlet of the dummy shuttle path across the shed.