Vibratory tray feeders consist of a tray that moves rapidly back and forth to meter material into a process. As the tray vibrates, each particle is thrown up and forward from one point on the tray and drops down at a point farther along the tray. Primary components in a vibratory tray feeder are the tray, a drive unit, and a spring system between the tray and the drive unit. The tray's receiving end is mounted under a supply hopper outlet, and the discharge end is located above receiving equipment.