Abstract: Multi-component yarn comprising as one component an open end yarn core formed in an open end spinning chamber from staple fibers, and at least a further component consisting of a longitudinal formation which is wrapped on this yarn core in said spinning chamber, advantageously along a helix in the direction of the twist of the yarn core while maintaining the original character of the formation wrapped on the yarn core. The invention also includes the method of and the apparatus for forming such multi-component yarn.

Abstract: There is disclosed a method of and an apparatus for frictional spinning yarn on the open-end principle. Continuously supplied separated fibers are deposited onto a first, perforated frictional surface provided on a rotary carrier for conveying the fibers to the mouth of a wedge-like gap defined by said frictional surface and another, second, frictional surface provided on another rotary carrier. The second frictional surface moves relative to the first-named carrier, in the opposite direction, and with the first frictional surface twists the fibers in the mouth of said wedge-like gap to yarn, due to a contact with the two frictional surfaces. The yarn is withdrawn sidewards relative to the direction of movement of the frictional surfaces while preventing the twist propagation. In accordance with the invention one frictional surface is concave and the other is convex. This results in a number of advantages, including the elimination of undesirable slippage of the yarn in the yarn building region.