Abstract: An automatic spool-changing system for textile machines with an array of high-speed winding heads, for example of the type having a spool revolver and a lossless thread transfer device. The system has a conveyor moving along the machine front and a spool changer with a gripper movable between the conveyor and a spool holder in a spool-changing position. The conveyor is located below and in generally the same vertical plane with the spool holder, and the gripper, which is arranged for both rotation and axial translation, is mounted for movement along a three-legged spool doffing and spool-donning path extending forwardly of the machine front. Two embodiments are shown. In the first, a separate empty-spool magazine is provided and the conveyor merely serves to carry away the empty spools.

Abstract: High speed yarn transporting apparatus which requires at least one and preferably two transporting rolls with cylindrical yarn contacting surfaces containing shallow grooves or flutes which preferably extend axially of each roll. When constructed as a pair of nip rolls, the apparatus advantageously includes a jet operated guide member on the discharge side of the nip with means to inject air into a thread guide channel extending in the yarn transporting direction. A number of preferred embodiments of the rolls and a jet operated guide member are disclosed for smooth and positive transport of a yarn at speeds of 3,000 meters per minute or more.