Seeder unit for use with arm of seeder, has opener discs surrounding shoe forming ploughshare, press wheel penetrating in space opened by ploughshare, and depth wheel, where shoe has curvilinear parts with conformations to guide press wheel

摘要

The unit has a pair of opener discs (2) surrounding a shoe (3) forming ploughshare, a press wheel (4) penetrating in the space opened by the ploughshare, and a depth wheel (5). The shoe has a passage (6) on the upper part for being supplied with the seeds to be sown. The shoe comprises of two curvilinear parts (7) on whose sides two conformations (8a, 8b) are provided for guiding the press wheel. An independent claim is also included for a seeder including a set of seeder units.