Chemical dispenser for hay baler

Claim 1

A chemical dispenser for round hay balers having; a movable housing on wheels; a bale forming chamber within the housing adapted to turn a continuous mat of hay into a roll to form a round bale; a pick-up assembly having tines to lift scattered hay and move same onto a conveyor for movement into the bale forming chamber, the dispenser comprising: a hopper mounted on said housing for holding a quantity of particulate chemicals, said hopper having side walls connected to inwardly converging front and rear walls, said side walls and said inwardly converging front and rear walls joined together to form a rounded bottom having a plurality of openings therein; a rotatable shaft within the hopper near the rounded bottom wall having blades extending rearwardly toward the rear wall; control means beneath said rounded bottom for selectively opening two of said openings simultaneously by 1/4 increments until the two openings are fully opened and thereafter opening another of said openings by 1/4 increments thereby permitting selective predetermined quantities of particulate chemicals to pass therethrough; an inverted cone on the rounded bottom wall for receiving particulate chemicals after same is discharged through said openings, said inverted cone having an open end for discharging said particulate chemicals; a blower having a manifold for the reception of said particulate chemicals discharged through said open end of said inverted cone; and conduit means connected to said manifold of said blower for channeling said particulate chemicals pushed by the air from the blower toward the bale forming chamber for distribution in a layer over the mat of hay or crop before same is rolled into a round bale.