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Title: Rub-threshing machine
Claims: What is claimed is: 1. Rub-threshing machine for threshing grains and pulse comprising at least two endless belts which have been passed in loop-shape around guiding- and driving rollers, are driven at different speeds and are in mutual contact over a part of their surface length so as to thresh material at that location which is supplied to the belts, wherein at least the lower threshing belt is constructed of rod shaped elements, transverse with respect to the belt's direction of travel, and interconnected at their ends in such manner that the rods obtain a mutual spacing which is selected, according to the nature and fruit size of each sort of crop to be processed, such that the fruit can fall through the rods. 2. The threshing machine of claim 1, wherein below the threshing belts a closed conveyor belt is arranged for discharging the material falling through the bottom rod belt. 3. The threshing machine according to claim 2, wherein the said closed conveyor belt is arranged under an angle between 10.degree. and 50.degree. relative to the horizontal, and wherein the inclination and the speed of travel of this belt can be selected and adjusted such that fruit substantially roll down along the inclination of the belt and that offal material is taken along upwardly. 4. The threshing machine of claim 1 wherein the upper threshing belt is resiliently biased along at least a part of its length where it faces the lower belt. 5. Rub-threshing machine for threshing grains and pulse comprising at least two endless belts which have been passed in loop-shape around guiding- and driving rollers, are driven at different speeds and are in mutual contact over a part of their surface length so as to thresh material at that location which is supplied to the belts wherein the threshing belts are constructed, of rod shaped elements, transverse with respect to the belt's direction of travel and interconnected at their ends in such manner that the rods obtain a mutual spacing which is selected for the lower belt according to the nature and fruit size of each sort of crop to be processed, such that the fruit can fall through the rods. 6. The threshing machine of claim 5, wherein below the threshing belts a closed conveyor belt is arranged for discharging the material falling through the bottom rod belt. 7. The threshing machine of claim 6, wherein the said closed conveyor belt is arranged under an angle between 10.degree. and 50.degree. relative to the horizontal, and wherein the inclination and the speed of travel of this belt can be selected and adjusted such that fruit substantially roll down along the inclination of the belt and that offal material is taken along upwardly. 8. The threshing machine of claim 5 wherein the upper threshing belt is resiliently biased along at least a part of its length where it faces the lower belt. 9. Threshing machine for threshing grains and pulse comprising at least two endless belts which have been passed in loop-shape around guiding- and driving rollers, are driven at different speeds and are in mutual contact over a part of their surface length so as to thresh material at that location which is supplied to the belts, wherein at least the lower threshing belt is constructed of rod shaped elements, transverse with respect to the belt's direction of travel, and interconnected at their ends in such manner that the rods obtain a mutual spacing which is selected, according to the nature and fruit size of each sort of crop to be processed such that the fruit can fall through the rods, below the threshing belts a closed conveyor belt being arranged for discharging the material falling through the bottom rod belt, and below the lower end of the closed belt a horizontal conveyor belt being arranged for catching the material which rolls down. 10. The threshing machine of claim 1 or claim 5 wherein an airblower conduit is provided substantially laterally to the stream of downfalling fruit in view of removing affal. 11. The threshing machine of claim 10, wherein discharge apertures for the offal material are provided below and behind the extreme ends of the closed conveyor belt and the bottom threshing belt, respectively. 12. The threshing machine of claim 9 wherein the upper threshing belt is resiliently biased along at least a part of its length where it faces the lower belt. Other info: Inventors: van de Weerd, Berend (Bennekom, NL) Application Number: 852485 Filing Date: 1977-11-17 Publication_date: 1979-11-20 Assignee: Ter Borg & Mensinga's Machinefabriek N.V. (Appingedam, NL) Primary Class(es): 460/114 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Eskovitz, Jay N. Assistant Examiner: Attorney: Eyre, Mann, Lucas & Just |
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