Abstract: A single-grain seeder including a chassis that supports at least one seeding element including a dispensing housing, at least one opening disk for opening a furrow in the ground, and at least one depth control wheel, the dispensing housing delivering seeds one by one via a rotary dosing element configured to turn about a rotation axis, each seed being ejected from the rotary dosing element at an ejection point extending in a lower portion of the rotary dosing element. The ejection point is disposed in an external diameter of the opening disk, when viewed along the rotation axis of the rotary dosing element.

Abstract: A distribution box for a single-seeder including a disc including radial grooves that are regularly spaced apart and open on a periphery of the disc, the disc being rotatably mounted on a horizontal axis and separating a seed reservoir from a suction device such that seeds are picked up from the reservoir by the disc via air flow by negative pressure and are held over at least part of their angular travel until they are expelled from a discharge opening. Each groove includes a suction hole smaller than a size of the seeds to be distributed, the suction hole emerging on a channel with a width smaller than the diameter of the suction hole, the channel being open up to the periphery of the disc. A single-seeder can include at least one distribution box.

Abstract: A device for a self-regulated pneumatic supply from a main reservoir containing product toward at least one auxiliary reservoir according to its filling rate, the supply device including a compressed air supply, a tilted duct connected to pipe connections, a bypass air duct having a first channel emerging near the outlet of the main reservoir and a second channel emerging near the inlet of the pipe connections to bring product to the auxiliary reservoir. At least one of the channels includes a sliding system for adjusting a passage section of air passing through one of the channels. The device can be applied to a seeder including such a supply device.

Abstract: A distribution machine including a supply device for a self-regulated pneumatic supply from a main reservoir containing product toward at least one auxiliary reservoir according to its filling rate via a respective tight duct, each auxiliary reservoir including an air exhaust device and a distribution unit for distributing the product including a supply chamber and a rotary regulating element. The air exhaust device is configured to extend substantially below an overflow spot of the supply chamber.

Abstract: A single-grain seeder including a chassis that supports at least one seeding element including a dispensing housing, at least one opening disk for opening a furrow in the ground, and at least one depth control wheel, the dispensing housing delivering seeds one by one via a rotary dosing element configured to turn about a rotation axis, each seed being ejected from the rotary dosing element at an ejection point extending in a lower portion of the rotary dosing element. The ejection point is disposed in an external diameter of the opening disk, when viewed along the rotation axis of the rotary dosing element.

Abstract: A distribution machine including a supply device for a self-regulated pneumatic supply from a main reservoir containing product toward at least one auxiliary reservoir according to its filling rate via a respective tight duct, each auxiliary reservoir including an air exhaust device and a distribution unit for distributing the product including a supply chamber and a rotary regulating element. The air exhaust device is configured to extend substantially below an overflow spot of the supply chamber.

Abstract: A device for a self-regulated pneumatic supply from a main reservoir containing product toward at least one auxiliary reservoir according to its filling rate, the supply device including a compressed air supply, a tilted duct connected to pipe connections, a bypass air duct having a first channel emerging near the outlet of the main reservoir and a second channel emerging near the inlet of the pipe connections to bring product to the auxiliary reservoir. At least one of the channels includes a mean preset for adjusting a passage section of air passing through one of the channels. The device can be applied to a seeder including such a supply device.

Abstract: A distribution box for a single-seeder including a disc including radial grooves that are regularly spaced apart and open on a periphery of the disc, the disc being rotatably mounted on a horizontal axis and separating a seed reservoir from a suction device such that seeds are picked up from the reservoir by the disc via air flow by negative pressure and are held over at least part of their angular travel until they are expelled from a discharge opening. Each groove includes a suction hole smaller than a size of the seeds to be distributed, the suction hole emerging on a channel with a width smaller than the diameter of the suction hole, the channel being open up to the periphery of the disc. A single-seeder can include at least one distribution box.