A single shaft material processing vibrating screen is described which provides for non-circular acceleration (elliptical and otherwise). The system includes a main eccentric is rotated a first direction and a secondary eccentric orbits the main eccentric in an opposite direction.

The orbiting is accomplished by either long and short arms or by eccentric flywheels. The size and shape of elliptical/non-circular motion is adjustable by varying mass of main and secondary eccentrics, length of long and short arms or the size of eccentric flywheels.

A selection machine for separating fruits from foreign bodies has a rigid support frame, a mobile frame connected to the fixed frame and having a longitudinal axis (A-A), a connection between the fixed frame and the mobile frame, actuation means of the mobile frame; the mobile frame has a rectangular section and upper wall and a lower wall with a plurality of holes; the mobile frame oscillating around a horizontal rotation axis (X-X) disposed transversally to the longitudinal axis (A-A); the connection being a horizontal connecting pivoting pin having a longitudinal axis that coincides with the horizontal rotation axis (X-X) of the mobile frame.

A selection machine for separating fruits from foreign bodies has a rigid support frame, a mobile frame connected to the fixed frame and having a longitudinal axis (A-A), a connection between the fixed frame and the mobile frame, actuation means of the mobile frame; the mobile frame has a rectangular section and upper wall and a lower wall with a plurality of holes; the mobile frame oscillating around a horizontal rotation axis (X-X) disposed transversally to the longitudinal axis (A-A); the connection being a horizontal connecting pivoting pin having a longitudinal axis that coincides with the horizontal rotation axis (X-X) of the mobile frame.

A system and method for separating mixed materials employing a primary material separation deck and a secondary modular separation pathway for further separation of a portion, e.g. a three-dimensional portion, of the mix materials.