Rotary incorporator and spider wheel therefor

Abstract

A rotary incorporator for one pass incorporation of chemicals or small grains in previously tilled soil. The incorporator includes two rows of aggressive, large diameter spider wheels supported from a toolbar for rotation in the soil about axes offset at an acute angle to the transverse direction. The spider wheels, arranged to balance the forces transmitted to the toolbar, are angled in opposite directions on each half portion of the implement, with the wheels of the trailing row angled in opposite direction to and offset transversely with respect to the forwardly adjacent wheels in the forward row. The innermost wheels of each of the two rows are more widely spaced and smaller in diameter than most of the remaining wheels, and two additional smaller diameter spider wheels are centrally located between the innermost wheels and cooperate therewith to provide good incorporation and a smooth seed bed without hilling or chemical banding. A smaller diameter, depth limited spider wheel on each outermost end of the implement feathers the effect of the angled wheels. The spider wheels include tines having a concave soil working surfaces for good mixing and soil moving action and a large gullet area for good trash shedding and throwing characteristics.