Rotary harrows

Earth working – With ground support vertically adjustable relative to frame

Patent

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Details

172 59, 172 78, 172 68, 172 49, A01B 6316, A01B 3312

Patent

active

040182886

ABSTRACT:
A rotary harrow has a plurality of soil-working members rotatably mounted on upwardly extending shafts and the shafts are journalled in an elongated frame portion that extends transverse to the direction of travel. A protective and supporting member of elongated and generally cylindrical configuration is secured to the frame portion by arms that are pivoted to that portion. The protective member can be rotatable or nonrotatable but is angularly displaceable about a horizontal axis that extends generally parallel to the frame portion. The protective member has an outer surface that can be of curved configuration and that outer surface extends adjacent the soil working members and is positioned relative to those members to direct debris downwardly to the ground. Stops on the frame portion and protective member limit the latter's movement relative to the remainder of the harrow.

REFERENCES:
patent: 3616862 (1971-11-01), van der Lely
patent: 3638539 (1972-02-01), Lewis
patent: 3892278 (1975-07-01), Smith et al.
patent: 3951213 (1976-04-01), VAN DER Lely

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