Rotary harrows

Details Rotary harrows Rotary harrows

1974-09-30

1976-04-20

Marlo, George J.

Earth working

With drive means for tool or cleaner

Plural driven tools

172 78, 172421, A01B 3306, A01B 6506

Patent

active

039512134

ABSTRACT:
A harrow has side-by-side rotary soil working members mounted on upright shafts which are journalled in a frame portion that extends transverse to the direction of travel. Supporting members are pivoted to the harrow's frame in front of the soil working members and at each end of the frame portion. The supporting members have a wide ground engaging surface that is at least equal in width to the distance between adjacent shafts for the soil working members. The supporting members may be in the form a wheel with a low pressure tire, a wheel with a cage-like construction and longitudinal bars, or a skid with a ground-engaging surface of convex configureation.

REFERENCES:
patent: 1533918 (1925-04-01), Kast
patent: 3559747 (1971-02-01), Cline
patent: 3616862 (1971-11-01), VAN DER Lely
patent: 3774688 (1973-11-01), van der Lely et al.
patent: 3774689 (1973-11-01), van der Lely et al.
Terra-Tires AD, Popular Science, Dec. 1957, p. 129.
Terra-Tires AD, SAE Journal, Mar. 1959, p. 13.

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