Abstract: A metering sleeve having radial openings in which radially extending plungers reciprocate to vary the effective volume of the openings, and a weight within the sleeve and connected to the plungers to reciprocate the latter in response to rotation of the sleeve. The plungers are loosely connected to the weight to lessen the tendency of the plungers to jam during rotation of the apparatus.

Abstract: A planting machine wherein its planter wheel and a packer wheel trailing the same respectively have peripheral velocities greater and less than the speed of advance of the machine. Shoes on the former open the ground and deposit a seed therein on relative rearward movement, with feet on the packer wheel covering deposited seeds on forward movement thereof relative to the ground. The drives for the planter and packer wheels are interconnected to minimize the overall power requirement. Seeds are dispensed from a hopper to a position adjacent the axle of the planter wheel and spirally nested delivery tubes gravitationally deliver the dispensed seeds to the planter shoes in an arrangement such that a seed is delivered to a shoe only after a predetermined advance of the seed has occurred subsequent to its having been dispensed.