Abstract: A device is provided for dispensing seeds singly. The device includes a drum, a dispensing disc, a vacuum chamber and a seal of the vacuum chamber, between the drum and the disc. The seal includes a friction insert mounted so as to be immobile in rotation relative to the drum against the periphery of the disc and an elastic seal mounted so as to be immobile in rotation between the drum and the friction insert. The elastic seal maintains the friction insert in a position of leaning against the disc.

Abstract: A pneumatic seeder is provided, which is configured to be fixedly attached to a farming machine. The seeder includes an element for contacting with the ground, an element for storing a product to be sown, a pneumatic distributor of said product, a suction fan having at least one air inlet connected to the pneumatic for distributor and at least one air discharge outlet, an air extractor connected to the discharge outlet, the end of the air extractor leading out to face the ground. The seeder includes a damper and/or diverter for damping and/or diverting the flow of air coming from the air extractor. The damper and/or diverter is placed downstream from the end of the air extractor.

Abstract: Described herein is a planting unit that includes a frame whereon are mounted: means of opening a furrow in the ground, in the form of two adjacent discs; a pointed member removably mounted on said frame and protruding between said two discs and in the direction of the ground, said member being intended to form said furrow in a V shape, means of retaining said member mounted mobile on said frame between a retaining position of said member and a releasing position; and means of actuating connected to said means of retaining

Abstract: The seed drill element comprises a frame, a seed tank, a seed dispenser, and a member for opening a furrow in the ground. The seed drill element further comprises mechanism for bearing against the ground, having a rear block and/or a front block, with each block having at least one wheel and an arm hinged to the frame, and also topsoiling mechanism including a rear link, two front links, and an intermediate link. The topsoiling mechanism also comprise a mechanism for moving the rear link relative to a reference part connected to the frame. In addition, the seed drill element includes a locking mechanism so that the topsoiling mechanism can be configured for front topsoiling, for rear topsoiling, and/or for rocker topsoiling.