Patent ID: 8006775
Filing Date: 2011-08-30
Classification: A01B,A01C,Y02P

Abstract:
1. A strip tillage agricultural implement adapted for forward movement over ground where plant residue and obstacles are present, the implement comprising: a main frame having transversely extending front and rear frame members; lift wheel structure for raising and lowering the main frame between field-working and transport positions; a plurality of disk gang members connected to the front frame member and including a plurality of sizing disks for cutting the plant residue; an upright tool support bracket connected to the rear frame member, the bracket extending rearwardly from the rear frame member and defining a downwardly opening accommodation space at a top portion of the bracket; a parallel linkage having leading and trailing ends and pivotally connected at the leading end to a lower portion of the bracket below the rear frame member; a clearing tool assembly connected to the trailing end and including first and second transversely spaced clearing disks supported in generally a constant horizontal attitude as the parallel linkage pivots relative to the bracket to allow the clearing disks to pivot over the obstacles; a tool support having a fore-and-aft extending tool arm pivotally connected at a forward arm end to the bracket adjacent the parallel linkage and below the rear frame member; a fore-and-aft extending down pressure structure connected at its forward end to the top portion of the bracket and at its aft end to the tool arm; a rockshaft supported from the rear frame member in the downwardly opening accommodation space above the tool arm; and a closing disk arm supported from the rockshaft adjacent the tool arm, the closing disk arm having a forward end connected to the rockshaft and an aft end supporting a closing disk rearwardly of the tool arm, the closing disk arm rotatable by the rockshaft to a lift position wherein the closing disk is completely off the ground while the main frame is in the field-working position.