Abstract: A centrifugal spinning apparatus, comprises a plurality of drawing mechanisms for simultaneously producing a plurality of fiber tows and a plurality of spinning units forming an assembly of such units operating in synchronism, each spinning unit being associated with a respective drawing mechanism and comprising a pair of centrifugal spinning pots associated with respective temporary storage bobbins. Each drawing mechanism alternately supplies two spinning pots. On changing pots, the yarn is severed and its end is picked up by a temporary storage bobbin. A carriage, displaceable along a guide, carries a yarn suction arm pivotally mounted about shaft, a joining device, a reserve yarn bobbin system, and a take-up bobbin. The carriage is moved opposite storage bobbins of the different spinning systems associated with the several drawing mechanisms.

Abstract: In a method for connecting two yarn ends to one another, each yarn end is held at two longitudinally spaced apart points and an axial untwisting is introduced. These two untwisted ends are then joined together head to tail by gripping the central portion. There is next induced in the untwisted portion of each end between the central gripped portion and the respective yarn holding point by means of which the untwisting was induced, an axial excess untwisting with simultaneous winding of the free fibre ends about the portion subjected to excess untwist. The twist is retransferred by releasing the central portion during this operation.