Rotary harrows

Details Rotary harrows Rotary harrows

1979-07-30

1984-08-14

Shapiro, Paul E.

Earth working

With drive means for tool or cleaner

Plural driven tools

A01B 3306

Patent

active

044651430

ABSTRACT:
A rotary harrow has an elongated hollow frame portion that extends transverse to the direction of travel. The frame portion comprises three spaced apart sheet walls that define an upper chamber and a lower chamber. Driving means, including meshed pinion gears in the upper chamber and bearing housings in the lower chamber, receive and support upwardly extending shafts of soil working members. The soil working members have downwardly extending tools that are rotated by the pinions and their shafts are journalled in bearings held between the upper and lower walls of the lower chamber. The upper wall of the lower chamber forms the lower wall of the upper chamber. All three walls are bent at their front and rear sides to provide portions with rims that are joined to one another by bolt fastenings.

REFERENCES:
patent: 3111917 (1963-11-01), Dawrs
patent: 3765787 (1973-10-01), Hart et al.
patent: 3774688 (1973-11-01), Lely et al.

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