SEED PLANTER TRANSFER UNIT

A seed transfer unit for an agricultural planter, having first and second transfer bodies, with each having a plate with a cylindrical sidewall extending perpendicularly. The first and second plates are mounted to permit relative rotation therebetween about a device axis coincident with the major axes through the first and second cylindrical side walls, with the first and second plates parallel, and with the second cylindrical side wall disposed within, and concentric with, the first cylindrical side wall, such that the first and second plates and first and second cylindrical side walls define an annular space therebetween. The first plate has an inlet aperture through which a seed may pass to the annular space, and the second plate has at least one outlet aperture through which a seed is ejected. Each of the first and second plates has at least one arcuate ridge portion concentric with the respective cylindrical side wall and extending into the annular space, which ridge portions cooperate to carry a seed through the annular space from the inlet aperture to the, or one of the, outlet apertures as the first and second plates rotate relative to one another.