Abstract: The ends of warp yarns in a sheet form are treated at the end of a sizing process in preparation for a subsequent rewinding process. In the sizing process, the warp yarns are threaded through a reed with at least two warp yarns in each reed dent in vertically spaced relation. The at least two warp yarns are threaded through one dent in a reed in the rewinding process. Heretofore, it has been tedious and time-consuming to thread the warp yarns through the reeds since the warp yarns in one reed dent cannot be distinguished from those in other reed dents in the sizing process. In the rewinding process, a spacer such as a rod is inserted between vertically divided sheets of the warp yarns to prevent snarling. Since the warp yarns cannot be distinguished from reed dent to reed dent, it has been difficult to insert the spacer.

Abstract: Sizing of a yarn sheet is practiced without direct immersion into a size bath through running pressure contact of same with a rotary sizing roller while the process is so automatically controlled that, at starting of the sizing operation, the drive for running of the yarn sheet starts after all the related working elements are registered at their operative positions and, at stopping of the operation, the elements are released from the registered operative positions after the yarn sheet has come to a complete stop.