Unearthing plants or buried objects – With cleaning of recovered object by brushing or wiping
Patent
1984-09-19
1987-01-06
Hafer, Robert A.
Unearthing plants or buried objects
With cleaning of recovered object by brushing or wiping
171 26, 171120, 171133, 198780, A01D 1706, A01D 2504, A01D 2704, B65G 1302
Patent
active
046339566
ABSTRACT:
A machine for harvesting sugar-beets growing in rows in the soil is provided with a unit for loosening and lifting the sugar-beets, a cleaning unit for cleaning the sugar-beets from soil and stones, and an elevator for transferring the sugar-beets from the cleaning unit to an unloading conveyor positioned at a higher level than said cleaning unit and serving to unload the sugar-beets. The cleaning unit has a number of cleaning rolls having a core on which cleaning pins made of rubber or like material and projecting on either side are mounted, said cleaning pins having a flexural strength such that they do not damage the sides of the root-crops. Furthermore, the cleaning pins are so mounted on the associated cleaning roll that they are equally flexible in all directions. The cleaning unit also has an endless holding-down mat travelling around guide pulleys, the lower part of said holding-down mat exerting a load on the sugar-beets against the cleaning pins. The speed of the holding-down mat can be varied independently of the rotation of the cleaning rolls to adjust the transit time of the sugar-beets in the cleaning unit according to the amount of soil and stones carried along. The object of these steps is to make the cleaning pins, in cooperation with the holding-down mat, clean the sugar-beets in a gentle manner without causing damage.
REFERENCES:
patent: 481645 (1892-08-01), Wiborg
patent: 2670846 (1954-03-01), Rienks et al.
patent: 2828825 (1958-04-01), Johnson
patent: 3128485 (1964-04-01), Bradshaw et al.
patent: 4212148 (1980-07-01), Brownlee
Bengtsson Wilhelm
Glifberg Nils B.
Brown Terrence L. B.
Hafer Robert A.
Svenska Sockerfabriks AB
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