Metering system for an agricultural machine

A metering system for a row unit of an agricultural machine for an individual dispensing of grains, comprising

• at least two metering devices, whereby the at least two metering devices include at least one chamber for carrying a quantity of the grains that are to be dispensed,
• at least two metering elements that establish a border to the at least one chamber, whereby the at least two metering elements are rotatably mounted within the housing of the at least two metering devices and each of the metering elements includes openings, which are arranged along a curved path at regular intervals for picking up grains, and
• at least one grain dispensing area, which is defined by the at least one chamber and by the at least two metering elements, wherein the at least one grain dispensing area is adjacent a seed inlet element for a seed metering pipe through which the separated grains are dispensed into a seed furrow in the soil, and
• whereby a pressure application device, in communication with the at least one chamber or to a pipe of the air supply of the at least one chamber or in communication with both the at least one chamber and to the pipe of the air supply of the last least one chamber, operably produces a stream of air in the grain dispensing area having a pressure that is sufficiently greater than ambient pressure such that the grains released from a selected metering element are accelerated by the stream of air into the seed metering pipe.