Abstract: In a polishing machine for simultaneous double-sided polishing of workpieces between upper and lower polish tables, the upper polish table has a hollow center telescopically receiving in a drive hub supported from below. The upper polish plate is suspended by a lifting rod from a double-ended main lifting cylinder having upper and lower ends secured to a frame extending from the lower polish table.

Abstract: In a polishing machine for simultaneous double-sided polishing of workpieces between upper and lower polish tables, the upper polish table has a hollow center telescopically receiving in a drive hub supported from below. The drive hub is slotted and the upper polish plate has drive latches received in the slots. Lateral dislocations of the upper polish plate with respect to the drive hub are limited by providing stops on the drive latches which engage the outer surface of the drive hub. Additionally, the upper polish plate is suspended by a lifting rod from a double-ended main lifting cylinder.

Abstract: Apparatus for forming a denesting lip in paperboard containers by folding, heating, and sealing or tacking a side extension flap to form a denesting lip for nested stacks of such containers. The denesting apparatus includes a pair of pressure pads which guide the paperboard container onto the apparatus and prevent the container from sliding off the apparatus while the denesting operation is performed. The apparatus also includes a multiplanar mandrel pad for forming a bottom closure that is flat on its exterior surface.