Abstract: A screening mechanism may include a drive motor, a vibratory drive assembly, a driven mechanism, and a belt assembly. The drive motor may be drivingly engaged with a motor hub. The vibratory drive assembly may include a shaft assembly having a first driven hub fixed thereto. The driven mechanism may have a second driven hub fixed thereto. The belt assembly may include a first belt engaged with the motor hub and the first driven hub that drives rotation of the first driven hub by rotation of the motor hub and a second belt engaged with the first and second driven hubs that drives rotation of the second driven hub by rotation of the first driven hub.

Abstract: A screening mechanism may include a frame member, a drive mechanism, a bowl, and a screen assembly. The drive mechanism may be coupled to the frame member. The bowl may be rotatably supported on the frame member and may be in driven engagement with the drive mechanism. The screen assembly may be fixed to the bowl for rotation therewith and may include a plurality of panels removably coupled to one another and removably coupled to the bowl.

Abstract: A vibratory screening device includes a frame and a screen, supported by the frame, for separating undersize and oversize material. A vibrating device, coupled to the screen includes a first output shaft with an axis of rotation that oscillates relative to the frame. The vibrating device oscillates the screen as the first output shaft is rotated. A driver includes a second output shaft with an axis of rotation that is fixed relative to the frame. The driver rotates the first output shaft. A connector mechanically couples rotational output of the first output shaft to the second output shaft. Preferably, the connector includes a first universal joint, a sliding spline shaft, and a second universal joint. The driver preferably includes an engine, a centrifugal clutch coupled to the first output shaft, a sheave, and an endless belt connecting the centrifugal clutch to the sheave.