This South Dakota Seed Blower has been rebuilt.
It has a 1/8 Hp 115 volt single phase motor. This unit has a 3" tube.
The South Dakota Seed Blower utilizes airflow, which is generated by a blower motor and as that air passes through the 3" column it lifts light fluffy material or empty seed hulls into the top beveled area of the column, while larger heavier good seed stays at the bottom. Separations are accurately controlled by a calibrated valve cap in the top of the column.
Please see video for more information.