Abstract: A sorting apparatus for collating sheets into sets. The sheets are conveyed along a desired path and a plurality of sheet receiving bins are arranged along the path. Guide members associated with each of the bins are arranged to sequentially remove a sheet from the conveyor and guide it into its respective bin. The guide members are actuated by a drive system which includes a cam comprising a web having a cam surface with at least one discontinuity and follower members associated with each of the guide members in responsive engagement with the cam surface. The discontinuities can comprise slots, holes, or notches in the web. The web may be wound up on a take-up reel or it can comprise an endless type belt.