Sliver resolving apparatus for open-end spinning machines

Abstract

A pressure member cooperates with a supply roller to feed sliver to a sliver resolving roller enclosed by a housing. The pressure member has a sliding surface shaped complementally with and overlapping a sliding surface on the resolving roller housing surrounding the sliver infeed opening in the housing. The sliding surfaces cooperate to seal the resolving roller housing against gaps and maintain a smooth-walled roller chamber in any adjusted position of the pressure member. The interior wall of the housing chamber enclosing the resolving roller may have a thin liner bonded to it. The liner is of material capable of being formed to fit a non-cylindrical wall and of providing a precisely smooth wear-resistant surface. The liner has sliver infeed, fiber discharge and, optionally, dirt discharge openings through it aligned with corresponding openings in the housing wall; but the liner openings are smaller than the housing openings and, therefore, extend beyond and shield the edges of the housing openings. The resolving roller periphery and the liner cooperate to form the fiber passage between the sliver infeed opening and the fiber discharge opening. A circumferential portion of the liner immediately preceding the fiber discharge opening in the direction of fiber travel is eccentrically spaced from the roller periphery to form a widened section in the fiber passage.