Rotary harrows

Details Rotary harrows Rotary harrows

1977-01-17

1978-09-05

Johnson, Richard J.

Earth working

With drive means for tool or cleaner

Plural driven tools

172 70, A01B 3306

Patent

active

041112679

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 configuration is secured to the frame portion by arms that are pivoted to that portion. The protective member can be nonrotatable but is angularly displaceable about a horizontal axis that extends generally parallel to the frame portion. The protective member has an inclined surface that can be curved or substantially flat and the outer surface faces the soil working members and is positioned relative to those members to direct debris downwardly to the ground.

REFERENCES:
patent: 1082552 (1913-12-01), Pinet
patent: 2513186 (1950-06-01), Leaman
patent: 3821989 (1974-07-01), Lely et al.
patent: 3841411 (1974-10-01), Lely et al.
patent: 3892278 (1975-07-01), Smith
patent: 3930542 (1976-01-01), Lely et al.
patent: 4018288 (1977-04-01), Lely
patent: 4042041 (1977-08-01), Lely

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