Abstract: An apparatus for squaring folded corrugated paperboard boxes and the like includes a frame, an upper drive assembly and a lower roll assembly. The upper drive assembly and lower roll assembly define a split-nip. The upper drive assembly includes a pair of independent wheels which may be controlled to adjust or change the orientation of a folded corrugated box passing through the nip. The upper drive assembly is pivoted to the frame for adjustment of the nip. The apparatus is positioned to deliver folded corrugated boxes to a counter/ejector from a folder/gluer.

Abstract: A paperboard sheet feeder for feeding paperboard blanks to the feed rolls of processing equipment includes a support table and a pair of roller assemblies mounted on the support table. A drive includes gears connected to the roller assemblies through one-way clutches. A drive belt has ends secured to a slide block. The belt engages the gears. The slide block is mounted on guide bars for reciprocating movement. The drive belt, gears and one-way clutches convert reciprocating movement of the slide block into rotary movement of the roller assemblies. A source of vacuum communicates with the support table to draw a paperboard sheet into contact with the roller assemblies.