Abstract: An apparatus for folding envelope blanks comprises a plurality of platform assemblies which are rotatably mounted on a base. The platform assemblies are incrementally advanced around the base, and separate mechanisms located around the periphery of the base perform the individual folding operations. Particular advantages are achieved by including the side flap folding mechanism on the platform assemblies so that the folded flaps are held firmly in place until the envelope is removed from the machine.

Abstract: A floppy disk burnishing and packaging machine and method including pick up, burnishing, packaging and collection assemblies. A transfer mechanism moves disks between the various assemblies and a control system coordinates the operation in each so that processing proceeds simultaneously in each according to a particular sequence. Disks are removed from a supply stack one at a time with part of that process involving curling the peripheral edge of the topmost disk upwardly away from the stack. The burnisher includes air knife hold down devices to force the disks against burnishing rolls over which burnishing tapes are moved. The air knife devices also cause a slight amount of wrapping between the disks and the burnishing rollers to increase the burnishing area. Further, the disk is oscillated during burnishing, relative to the burnishing rolls, to improve burnishing. Burnished disks are automatically packaged in protective jackets which are ejected and collected.