Load transfer device for seed distribution systems in seeders and fertilizer machines

A load transfer device for seed and fertilizer distribution systems in seeder and fertilizer machines which improves the adaptation of the seed distribution systems to the different irregularities of the ground, such device comprising

• a deformable parallelogram-shaped structure attached to the tool-holder bar of such seeder and fertilizer machine at one end and to the distribution system at the other end;
• a transfer rack that articulates in one of the vertexes of the parallelogram acting as a rocker arm connected at one end to the aforementioned parallelogram and at the other end to at least one spring through a lever arm;
• wherein such lever arm extends downwardly and divergently, generating a crossing angle between the lower and upper sides of the parallelogram which creates a torque that varies not only due to the spring tension but also to the ratio of the effective lengths of the lever arms involved.