US Patent 10433475 Dual seed metering device

A dual seed metering device for seeds, grain or other granulate materials, powered by direct drive. More specifically, a dual seed metering device for sowing machines, driven by a single electric motor of the annular type, with a hollow shaft, which comprises two chambers or seed reservoirs, each being loaded with seeds of different types, the device being capable of selectively sowing seeds from one reservoir or the other, wherein selection of the type of seed is instantaneous and does not require stopping the equipment nor require manual mechanical adjustments.