Abstract: A parts separator for separating molded plastic parts from sprue-runner elements. The separator comprises a supporting frame, a hollow drum mounted for rotation about a first horizontal axis and constituting an outer separator element, and an inner separator element mounted within the drum for rotation about a second horizontal axis which is spaced from and parallel with the first axis. The drum has a plurality of apertures in its outer surface and the inner separator element includes a plurality of pins which extend through the apertures, so that rotation of the inner and outer separator elements about their respective axes causes the outer end of each pin to reciprocate within the aperture between an inner position wherein the end of the pin is flush with the outer surface of the drum to an outer position wherein the end of the pin extends substantially beyond the outer surface of the drum.

Abstract: An auger feed granulator having a cutting chamber, the cutting chamber having a rotating knife assembly which traces a cutting circle which intersects the envelope defined by the auger. The rotating knife assembly engages and removes material carried into the cutting chamber by the auger. The knife assembly axis is offset from the auger axis. Stationary knives are provided adjacent the rotating knife assembly, as well as a removable screen having a selected mesh size which coacts with the rotating knives to determine the granule size of the material which exits from the machine. The screen is mounted on one side of the granulator and preferably has a radius of curvature the same as the radius of the circle traced by the rotating knife assembly. Lastly, the granulator is mounted on a base provided with a jack screw for tilting the granulator to any desired position without changing the relationship of the working parts of the granulator to each other.