Drive mechanism for turf aerating apparatus

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

1985-01-16

1986-07-29

Johnson, Richard J.

Earth working

Lawn aerator or perforator, or plug remover

Earth removing

172125, A01B 4502

Patent

active

046026878

ABSTRACT:
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 diametrically 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 produces 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.

REFERENCES:
patent: 619426 (1899-02-01), Mauger
patent: 2063333 (1936-12-01), Nolte
patent: 2347748 (1944-05-01), Melling
patent: 2800066 (1957-07-01), Cohrs

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