Abstract: A Coanda dryer nozzle unit in which a nozzle opening formed in a plenum chamber just below and extending along one edge of a wall of the chamber parallel to the web to be dried is connected to the upper surface of the wall by a curved surface to produce a Coanda flow of air over the curved surface and along the upper surface of the wall. A lip along the other edge of the wall has a curved surface which directs the airflow upwardly toward the web and produces a pad of air between the web and the wall.

Abstract: An improved rotary knife assembly for severing a moving web in which a support is mounted on a frame for rotary movement around a first axis, and a knife blade is mounted on the support for rotary movement around a second axis generally parallel to and spaced from the first axis. The knife blade is adapted to move from a first position remote from the web to a second position at which it engages and severs the web. Means are provided for concomitantly driving the support and the blade around the axes to move the blade from the first position through the second position and back to the first position.

Abstract: A tension control system for an unwinder in which a mechanical differential continuously couples to the roll mandrel an unwinding torque which is at least equal to the torque necessary to overcome the friction in the system.

Abstract: An improved turret for use in winding and unwinding operations in which each of the arms of two pairs of generally diametrically oppositely extending roll supporting arms is eccentrically mounted on the cross-shaft by linear bearings which permit rolling movement of an arm axially of the cross-shaft while constraining the arm to rotate with the shaft. Respective independently operable means associated with each pairs of arms permit the arms of a pair to be moved concomitantly axially toward or away from each other to accommodate different roll widths. Other independently operable means permit the arms of a pair to be moved together axially from side to side to adjust side lay of the web being handled.

Abstract: The invention relates to an alternate side web splicing apparatus in which a bumper roll and a knife roll supported on a frame are adapted successively to be fired in the same direction from ready positions to perform an undersplice and in which means is provided for automatically changing the ready position of the knife roll while properly orienting the blade thereof and for firing the bumper roll and the knife roll in the opposite direction to perform an oversplice.