A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
56/47.5
A01D 34/76 (2006.01) A01D 34/66 (2006.01) A01D 43/10 (2006.01) A01D 61/00 (2006.01) A01D 82/00 (2006.01) A01F 12/18 (2006.01)
Patent
CA 1168456
ABSTRACT A crop cutting and conditioning apparatus has two vertical axis rotary drum cutters 13, each having an upper rotor with a crop conveying surface 19 and a lower rotor carrying knives 21. Gears drive the upper and lower rotors at different peripheral velocities. The lower rotor has an annular rim 18 having an upper surface shaped to continue the outline of the conveying surface 19. The knives 21 protrude outwardly from beneath the rim 18 and rotate with the rim. The upper rotor has conditioning elements comprising brushes 35 (or sheets of plastics material), for conveying crop and conditioning crop by relative movement between the brushes and the crop. The outer tips of the brushes 35 (or the edges of the sheet or rib-like elements) lie along one or more helical or part helical paths around the rotor axis. Preferably the lower end of each helix leads during the rotation so as to exert a lifting action on crop engaged by the rotors.
383597
Fuller Robert F.
National Research Development Corporation
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