A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/69
A01B 33/00 (2006.01) A01B 33/06 (2006.01) A01B 33/10 (2006.01) A01B 33/14 (2006.01)
Patent
CA 1202207
ABSTRACT OF THE DISCLOSURE A rotary tiller includes a pair of circular plates which are rotated by a single drive connected to a shaft on each plate by pulleys and belts; a plurality of radial rows of teeth, which are slidably mounted in the plates; and a cam arrangement for reciprocating each tooth once during each revolution of the plates, so that debris is removed from the teeth.
421264
Drysdale Robert T.
Dunsmuir George H.
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