TOOTH HARROW Russian patent published in 2022 - IPC A01B23/00 

FIELD: agricultural engineering.

SUBSTANCE: invention relates to agricultural engineering, in particular to the design of tillage implements. The tooth harrow consists of a frame with polyhedral or spring teeth placed in it. Holes are made in the teeth with elastic rods bent in the middle with a gap in them, the lateral ends of which are smoothly curved in their front part opposite from the attachment point, while the distance from the end of the teeth to the center of the attachment of the rods corresponds to half the depth of tillage with a harrow. The axes of the sides of the curved rods form the upper and lower planes with the axis of the hole adjacent to them, the angle between which is 10…15º, and the extreme points of the end parts are on the same straight line parallel to these planes and the axis of the hole. Curved rods are located in the holes of the harrow teeth with alternating sides in the upper and lower planes in a staggered manner. On the straight end parts of the elastic rods bent in the middle along their entire length of these straight end parts, truncated straight circular cones with a central cylindrical hole, the diameter of which is equal to the diameter of the curved elastic rods, are fixed with their large bases outward. At the same time, the smaller base of each truncated straight circular cone facing the tooth has a diameter 1-2 mm larger than the diameter of the curved elastic rods, and its larger base has a diameter three times larger than the diameter of the curved elastic rods.

EFFECT: use of the invention will make it possible to improve the quality of tillage by better crumbling of soil lumps and combing weeds into its surface layers while increasing the anti-erosion properties of the field surface.

1 cl, 5 dwg