Soil cultivating implements.

摘要

In a soil cultivating implement, such as a rotary harrow, of the kind which comprises a hollow frame portion (1) that extends substantially horizontally perpendicular, or at least transverse, to the intended direction of operative travel (A) of the implement and whose frame portion (1) carries a row of soil working members (3) that are power-rotatable about the axes of corresponding upwardly extending shafts (2), a member (10) to support the implement from the ground surface whilst it is in operation is provided in advance of the soil working members (3) with respect to the travel direction (A). The supporting member (10) comprises a convexly shaped plate (11) which extends throughout the combined working width of the soil working members (3) and a lowermost substantially hortizontal part of said plate (11) bears against the ground surface when the implement is in use. The supporting member (10) is angularly deflectable about an axis (a) which axis is in advance of said part of the plate (11) which makes contact with the ground relative to the travel direction (A). Holes (14) in carrier plates (12) and shaped recesses (13) in the carrier plates (12) cooperate with locking pins (15) and a rim at the front of the frame portion (1) in enabling the working depth of the soil working members (3) to be adjusted to different values and to enable the supporting memner (10) to deflect turnably about the axis (a) through not more than substantially 15 DEG if a stone or other hard object should become momentarily jammed between the rear of the supporting member (10) and at least one of the soil working members (3). An alternative embodiment is described and illustrated in which the supporting member comprises a rotatable roller.