Abstract: A portable polisher is provided for surface preparation or for surface repair of substrates such as sheet aluminum. The polisher is particularly well suited for restoring the polished finish of aluminum aircraft skin that has been dulled by normal use and to repair blemishes on polished aluminum that occur during handling and fabrication. This apparatus includes elongated polishing rolls that are driven by a motor in conjunction with a suitable counter-rotating drive arrangement such that one polishing roll rotates in a clockwise direction about its elongated axis and another polishing roll rotates in a counterclockwise direction about its elongated axis. The apparatus may also include features for counter-oscillating the polishing rolls about their respective longitudinal axes.

Abstract: A packaging machine is provided in which wire is fed for cutting into predetermined lengths for subsequent formation into U-shaped clips for clinching about a constricted product filled tube. It includes means for varying the length of the cut off portion by adjusting the position of a cut off knife along the wire against the biasing action of a cooperating wire receiving member or cut off round.

Abstract: A packaging machine is provided in which wire is fed for cutting into predetermined lengths for subsequent formation into U-shaped clips for clinching about a constricted product filled tube. It includes means for varying the length of the cut off portion by adjusting the position of a wire receiving member or cut off round and a cut off knife along the wire. Also the wire is fed intermittently to be cut off through an extent corresponding to the length to be cut off. The cut off length is variably formed according to the desired length of the U-shaped clip with the legs thereof in various angular relations.