E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
209/111
E02F 7/06 (2006.01) E02F 3/40 (2006.01)
Patent
CA 1277633
Abstract of the disclosure This invention relates to a method of separating from excavated materials (2) fine constituents (3), preferably topsoil, and coarse constituents (4), preferably stones, roots or root crops, in which the materials to be excavated (2) are excavated by an excavating and separating bucket (11) of grid structure which is subjected to separating movements to cause the fines (3) to escape from the excavating and separating bucket (11) through apertures provided for that purpose. To produce shock- free separating movements said method is characterised in that the excavating and separating bucket (11) is rotated continuously through one or preferably a plurality of revolutions in the same direction of rotation (R). A simple apparatus for carrying the method of the invention into effect is characterised in that the excavating and separating bucket (11) is comprised in a unit (5) provided with connecting means (7) to permit connection of the unit (5) to an excavating and elevating assembly (8) on a vehicle (9). Furthermore, the unit (5) comprises a rotation assembly (10) to rotate the excavating and separating bucket (11) continously through one or preferably more revolutions in the same direction of rotation (R) to produce shock-free separating movements, and the excavating and separating bucket (11) has one or more, preferably four, pockets which are adapted to elevate the excavated materials (2) contained in the excavating and separating bucket (11) at every revolution and let them down again into the lower- most portions of the excavating and separating bucket (11). (Figure 9)
493158
Carlsson Leif
Gowling Lafleur Henderson Llp
Prodec Inter Ab
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