Abstract: An apparatus for advancing a plurality of components comprising a vibrating feed tray, having a plurality of interchangeable modular troughs, each sized to receive a component of a particular size. The troughs are removably and slidably secured to the tray, and can be used in any combination. One end of each trough is characterized by only one side wall. A second, parallel side wall is provided each trough by means of sharing the side wall of the adjoining trough. In the event that there is no directly adjacent trough, a side stop is positioned adjacent the open side of the trough.

Abstract: An apparatus for maintaining the orientation of a plurality of components advancing toward a first location comprises a trough, secured to a vibrating feed tray, and a component cover plate for preventing the components from being canted within the trough. The cover plate exhibits a flap which at least partially overhangs a component disposed at the first location. The flap is adapted to have a flexibility sufficient to allow the component to be lifted from the tray, yet have a rigidity which prevents the component from canting at the first location.