GB1072757A - Separating device for root crop harvesting machines - Google Patents

Abstract

1,072,757. Endless moving sieves and bands. WEIMAR-WERK VEB. Sept. 16, 1964, No. 37799/64. Heading B2H. A device for separating potatoes from leaves and earth comprises an inclined frame 9 pivotably mounted at 10 for adjusting its inclination; a deflector 15 connected to the frame, an inclined separating apron 3 passing over reversing wheels 11 mounted on the upper end of the frame, and agitating wheels 12 connected to the frame and engaging the apron 3. The apron 3 comprises a pair of endless chains between which are secured transversely extending, parallel bars having tines 7 affixed thereto. Potatoes, leaves and earth are fed on to the apron 3 by an endless conveyor 1. Some loose potatoes tend to roll down the apron and are guided by a deflector 5 into a ring elevator or on to a transverse endless conveyor 6. The remainder of the potatoes with the earth and leaves are entrained by the tines 7 towards a guide wheel 8 which may be circular or elliptical. The inclination of the run of the apron between the wheel 8 and the reversing wheels 11 is adjustable by pivoting the frame 9 which carries, in addition to the elliptical wheels 12, spring-tined rakes 13, 14 extending over the entire width of the apron. Between the wheels 8 and 11 the apron is vibrated by the wheels 12 and the potatoes, small leaves and fine earth are thereby separated from the large leaves and clods of earth together with the aid of the rakes 13, 14 and fallthrough the apron, being then guided by the deflector 15 on to an endless belt 17 pivotably mounted at 16. The potatoes roll over the projections of the belt 17 onto the conveyor 6 while the fine earth and small leaves are entrained by the projections.