Drive mechanism for turf aerating apparatus

Details Drive mechanism for turf aerating apparatus Drive mechanism for turf aerating apparatus

A - Human Necessities

01

B

97/3

A01B 45/02 (2006.01)

Patent

CA 1243881

DRIVE MECHANISM FOR TURF AERATING APPARATUS ABSTRACT OF THE DISCLOSURE A mechanism for driving the upper ends of a pair of tine arms of a turf aerating apparatus comprises an engine- driven crank shaft having a pair of cranks extending in dia- metrically opposed relation therefrom. A pair of pitman arms are each pivotally connected at one end to the upper end of one of the tine arms and at the opposite end to an oscillating link suspended from the aerator frame. A crank is pivotally connected to each of said pitman arms at a point intermediate its end attachment points. Rotation of the crank shaft pro- duces an elliptical motion of each of the tine arm upper ends with the major axis of the ellipse lying in a substantially vertical plane, thereby maintaining a substantially vertical attitude of the tine arms.

498974

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