Patent ID: 9326441
Filing Date: 2016-05-03
CPC Classification: A01C

Claim Text:
1. An agricultural seed-drill having automatic distribution comprising: a pneumatic transport device comprising a mixing chamber for mixing granular materials (M) with an air flow generated by a fan and directed in an ascending direction towards a diffusor, which receives the air flow mixed with the granular materials (M) in the mixing chamber in order to dispense the granular materials to sowing elements, a distributor for granular materials (M) comprising a through-conduit for the granular materials (M), and a device for calibrating the granular materials dispensed by the distributor comprising: wherein the through-hole is constructed in the region of a partition wall between the mixing chamber and the distributor, and delimiting the mixing chamber, and further comprising a motorized actuator which is capable of rotating the gate between a calibration position in which the gate is resting on the wall so as to close the through-hole and a distribution position in which the calibration aperture is closed and the material travels through the through-hole towards the mixing chamber of the transport device in order to be mixed with the ascending air flow.