Described is a separation apparatus for a harvester, for separating berries from other plant matter from harvested plant material, the apparatus comprising a conveyor system that defines a first separation system, a second separation system located at least partially above the first separation system comprising an array of rotatable rollers to convey harvested plant material in an upstream to downstream direction, the rollers spaced apart to provide a plurality of openings permitting the transit of separated berries through the berries while preventing the transit of other plant matter, a third separation system in the form of a de-stemming unit downstream of the second separation system, a plant matter distribution system, for distributing plant matter away from the collection apparatus, wherein berries pass through any one or more of the first, second and third separation systems for collection in the collection unit.

A modular star system for grading, cleaning, and transporting produce includes opposing, first and second hub modules with opposing, tapered surfaces, and plural finger modules separated by the first and second hub modules. Each finger module has finger members that are color-coded and the finger module and first and second hub modules are disposed on a rotatable shaft. Outer surfaces of either of the finger or hub modules are color-coded, and are substantially perpendicular to the long axis of the shaft. There is also a method of using the modular star system for grading, cleaning, and transporting produce.

An adjustable roll sizer for sorting objects of different sizes includes a first set of rollers mounted to a support structure and arranged in a first parallel array. A second set of rollers is mounted to the support structure in a second parallel array that is interleaveably alignable with the first parallel array. Means for automatic control are provided for misaligning the second parallel array from the first parallel array to vary gap width between adjacent rollers. Each roller in the second parallel array may also be tapered to vary gap width as a function of roller length. Rollers may include helical ridges for urging objects along the gaps.

The invention relates to a cast and adjacent casts on a shaft for providing a shaft assembly for a disc screen. A cast which is placeable on a shaft for a disc screen comprises a screening element part with an integral sleeve part. The shaft assembly for a disc screen comprises casts placed on the shaft, each cast comprising a screening element part and an integral sleeve part, the casts being placed against each other so that abutting screening element parts of two adjacent casts constitute a screening element, and abutting sleeve parts of two adjacent casts constitute a sleeve element on the shaft.

The invention relates to a cast and adjacent casts on a shaft for providing a shaft assembly for a disc screen. A cast which is placeable on a shaft for a disc screen comprises a screening element part with an integral sleeve part. The shaft assembly for a disc screen comprises casts placed on the shaft, each cast comprising a screening element part and an integral sleeve part, the casts being placed against each other so that abutting screening element parts of two adjacent casts constitute a screening element, and abutting sleeve parts of two adjacent casts constitute a sleeve element on the shaft.

A disc for a separating conveyor screen has a disc body with an opening in an axial direction for receiving a shaft. At least one anchoring member of the disc has an anchoring portion projecting into the opening in a radially inward direction and has a positioning portion fitted in a disc body of the disc. The anchoring portion has at least one projection in circumferential sense of the opening for anchoring in at least one recess in an outside surface of the shaft. At least one tensioner is provided for tensioning the anchoring member and the disc body radially towards each other. A separating conveyor screen equipped with such discs is also described.

A disc for a separating conveyor screen has a disc body with an opening in an axial direction for receiving a shaft. At least one anchoring member of the disc has an anchoring portion projecting into the opening in a radially inward direction and has a positioning portion fitted in a disc body of the disc. The anchoring portion has at least one projection in circumferential sense of the opening for anchoring in at least one recess in an outside surface of the shaft. At least one tensioner is provided for tensioning the anchoring member and the disc body radially towards each other. A separating conveyor screen equipped with such discs is also described.

Systems and methods for separating harvested crop product from twigs, dirt, dust, and other debris. A disk to be used in a harvester includes a first segment and a second segment and is configured to cooperate with adjacent disks axially mounted on a common rotational shaft, and radially cooperate with disks mounted on a parallel rotational shaft. The disks are used in a roller assembly or a harvester, and gaps between cooperating disks remain effectively constant during operation.

Systems and methods for separating harvested crop product from twigs, dirt, dust, and other debris. A disk to be used in a harvester includes a first segment and a second segment and is configured to cooperate with adjacent disks axially mounted on a common rotational shaft, and radially cooperate with disks mounted on a parallel rotational shaft. The disks are used in a roller assembly or a harvester, and gaps between cooperating disks remain effectively constant during operation.

The invention relates to a device for sorting particulate materials of different grain size that can be part of a construction machine or digger's scoop. The device for sorting has a plurality of helical rollers, each exhibiting at least one helix, wherein each helical roller rotates about a rotary axis of its own, at least two adjacent helical rollers exhibit the same direction of rotation, and the rotary axes of at least three helical rollers are not arranged in a common plane. At least some of the helical rollers are held and rotatably mounted exclusively at one end.