Abstract: A roller conveyor for automatically sorting produce or other items according to size which includes an apparatus and method for hydraulically adjusting the space between the rollers to permit optional uniformly graduated increments or fixed spacing between each pair of rollers. Each roller of the conveyor is slidably mounted at opposite ends of the roller to a frame. The ends of each roller are supported in a bearing block and each adjacent pair of rollers is interconnected at the ends of the roller by a slidable connecting rod attached between the bearing blocks of the adjacent rollers.

Abstract: A classification screen or sieve is provided having a plurality of elongated pieces, each piece having a substantially straight posterior edge, and an anterior edge downstream from said posterior edge having a plurality of alternating projections and notches. Each elongated piece being staggered or off-set with respect to the succeeding elongated piece without touching it and each of said elongated pieces being parallel to each other and vertically displaced from each other.

Abstract: This invention relates to an improved device for separation of sprues from molded pieces, comprising a substantially cylindrical drum element open on both bases, slanting and rotatably carried; the bases, comprising rings with rollers located at an adjustable distance from one another engaging thereon, provide sets of rollers arranged on different diameters to prearrange a passage zone for the pieces and risers or sprues to be separated.

Abstract: A rotary separator is disclosed which utilizes a rotating drum having a plurality of radially elongated slots therein that lead radially outwardly from a central tumbling chamber. A mixture of molded parts and molding runners is placed inside the central chamber. When the drum rotates, the runners fall through the slots and the molded parts remain within the central chamber.

Abstract: An improved slat for harvester sieves and chaffers comprising a blade of single thickness from the finger tips to the bottom edge of the angularly disposed air blast baffle and wherein the blade is shaped at the upper end of the baffle to provide a longitudinal channel of semicircular section adapted to receive and fit the conventional slat support rod, the opening of the channel having longitudinally spaced indentations to effect a snap-in reception of the slat support rod.

Abstract: An adjustment means for the slats of sieves and chaffers comprising a manually operable screw mounted on a mounting plate fixed to the chaffer frame and directly connected with the conventional slotted bar for oscillating the slats to clean them and for setting their operating angular position, the screw being normally held on the mounting plate against non-rotative axial movement but releasable for back and forth axial movement to open and close the slats for cleaning purposes; the mounting plate including a latch adapted to engage a noncircular element fixed on the screw to prevent its inadvertent rotation, whereby after being released for operating the slats without rotation the screw is returned to the mounting plate for engagement of the latch, the slats will be positioned precisely in their initially set operating position.

Abstract: A roller adjustment apparatus provides for the independent adjustment of spacing between any two adjacent rigidly spaced apart rollers without affecting the spacing of any of the other rollers in a roller screen conveyor. A support block of the apparatus, which rotatably supports an end of the roller and is slidably mounted on the conveyor frame, has two oppositely extending threaded bores oriented normal to the axis of rotation of the roller and parallel to the longitudinal axis of the conveyor. A threaded adjusting bolt, having oppositely threaded ends, is placed intermediate adjacent support blocks and engages the confronting threaded bores therein such that rotation of the adjusting bolt either increases or decreases the spacing between adjacent rollers. Threaded studs and a threaded adjusting sleeve are alternate corresponding forms for adjusting the roller spacing.

Abstract: A screening apparatus has a screening surface comprising at least one group of elongate, mutually parallel and mutually adjacent screening elements, the size of the mesh defined by adjacent elements being varied by moving the elements of one and the same group transversally of their longitudinal axes while maintaining an equal distance between all said elements. Each screening element of a particular group of said elements is mounted on an associated arm arrangement which can be swung about an axis extending parallel to the long axis of an associated screening element. Planes containing the pivot axis of a respective arm arrangement and the longitudinal axis of its associated screening element are parallel to one another while the distance between said axes decreases from arm arrangement to arm arrangement in direct proportion to the distance between the pivot axes of the arm arrangements.

Abstract: The herein-disclosed vibrating screen pertains to equipment used in the mining industry for a preliminary size-grading of lump material (mineral product).The screen has a material feeder, a sized material conveyer and a working member, all said components being mounted on a common frame.The working member is composed of two solid plates mounted on frame supports and given a oscillating motion from vibrators, whereby the material being handled is classified into size fractions.The plates make up an angle with each other so that an aperture is defined between the bottom edges thereof for the fractions of the material being sized to pass therethrough, while the oversize (plus material) on the plates is caused to move therealong by virtue of vibrating motion performed by the plates, to get onto the conveying device.