Patent ID: 6557646
Filing Date: 2003-05-06
Classification: A01B,Y02A

Abstract:
A tillage implement comprising:a rigid main frame having a front end, an opposing rear end and opposing first and second sides extending therebetween, said main frame being generally horizontal in a plane parallel to the surface of the ground and having a fore-and-aft centerline; a hitch having one end connected to the front end of said main frame and an opposite forward end adapted to be connected to a towing vehicle; front and rear pairs of disk gangs mounted on said main frame for working the soil as the implement is pulled across a field by a towing vehicle, each said gang having an elongated axis about which said disks may freely rotate, each said pair of gangs being generally symmetrically arranged relative to said centerline; said front and rear pairs of gangs each including a left gang and a right gang each supported by a separate subframe such that respective said elongated axis of said gangs are selectively adjustable vertically in a direction generally perpendicular to the plane of said main frame and each of said gangs in said front pair set at a working angle in the range of 17Â° to 19Â°; a plurality of chisel plow units affixed to said main frame between said front and rear pairs of gangs regular intervals between said first and second sides; the disk blades on said front pair of disk gangs being shallow concavity cutting disk blades having the ratio R/D>1.5, where R is the radius of curvature, and D is the diameter, both of the disk blade; and the disk blades on said rear pairs of disk gangs being deep concavity leveling disk blades having the ratio R/D<1.3, where R is the radius of curvature, and D is the diameter, both of the disk blade.