Abstract: The seed drill of the present invention particularly includes a front chassis resting on the ground by wheels and a rear chassis carrying elements for planting seeds in the ground, the rear chassis being connected to the front chassis by a central articulation the axis of which is at least substantially vertical. The seed drill is one which additionally includes structure making it possible, as soon as the planting elements leave the earth, to align the rear chassis with respect to the front chassis. The object of the present invention is to avoid any possible shocks between the rear chassis and the front chassis, the shocks being caused by pivoting of the rear chassis about the central articulation when the seed drill is switched to the transport position on sloping ground.

Abstract: The seed drill of the present invention particularly includes a front chassis resting on the ground by means of wheels and a rear chassis carrying elements for planting seeds in the ground, the rear chassis being connected to the front chassis by means of a central articulation the axis of which is at least substantially vertical. The seed drill is one which additionally includes means making it possible, as soon as the planting elements leave the earth, to align the rear chassis with respect to the front chassis. The object of the present invention is to avoid any possible shocks between the rear chassis and the front chassis, the shocks being caused by pivoting of the rear chassis about the central articulation when the seed drill is switched to the transport position on sloping ground.

Abstract: The present invention relates to an opening disk for a seed drill. The opening disk has waves in a manner known to those skilled in the art. These waves allow the disk to work a relatively broad strip of earth. According to one feature of the present invention, the disk advantageously has at least one notch on its circumference. The purpose of the notch(es) is to increase the ability of the disk to penetrate the ground.