Apparatus for loading trays with vials receives vials from an input channel and transmits the vials through a discharge channel to a tray for processing, e.g. autoclaving. The vials are conveyed by rotation of a pusher wheel having a series of radially extending, biased fingers on the periphery thereof. An outer guide is located adjacent to the pusher wheel to form a channel for the vials being conveyed. The side edge of the pusher wheel and an opposed side edge of the guide are formed with a lateral protrusion at the upper portion thereof to prevent tipping of the vials.
