Control for the working depth of ploughshares of a seed drill without an additional device for feeling the ground

摘要

a) Control for the working depth of ploughshares of a seed drill without an additional device for feeling the ground. b) Control characterised in that between the tooth-carrying tool (6) and the seeding ploughshares (4) is located at least one depth-control sensor (8), the carrying arms (5) of the tooth-carrying tool (6) and the lever of the seed drill (3) of the ploughshares of the seeders (4) having a common rotation spindle (7) on the frame (1) of the machine. <IMAGE>