DIGGING WORKING MEMBER Russian patent published in 1997 - IPC

FIELD: agricultural engineering; potato diggers. SUBSTANCE: digging working member has chain conveyor 2 with pairs of curvilinear teeth 7 secured for turning on chain conveyor in cross plane. Two rollers 9 are secured on each tooth 7 by means of pins 8. Rollers are arranged in guides 10 and 11 with screw portions for turning the teeth 7 made to provide vibration of teeth 7. Teeth 7 are placed at sides along conveyor chain 3 and are mounted on longitudinal joints 6. Pins 8 of rollers 9 are secured at both sides in upper portion of each tooth 7. To provide vibration of teeth 7 guides 10 and 11 are made zigzag-shaped in working zone, and working portion of teeth 7 is made to arc of circumference. Axes of pins 8 at beginning of screw section of guides are arranged at angle of 90 degrees relative to axes at end of screw section. EFFECT: improved harvesting. 4 dwg