초록 ▼

A mulch tiller or similar implement having a rigid frame supporting a plurality of forward trash-sizing gang assemblies and rearward plow tools. Spring brackets rockably support the gang asemblies for independent vertical movement with respect to the frame and maintain a generally constant down pres

A mulch tiller or similar implement having a rigid frame supporting a plurality of forward trash-sizing gang assemblies and rearward plow tools. Spring brackets rockably support the gang asemblies for independent vertical movement with respect to the frame and maintain a generally constant down pressure of the gangs against the soil. The frame includes diagonal beam structure and a lower subframe assembly for compact shipping, good draft load distribution and underframe clearance. Common depth control, main frame and hitch components are utilized for implements of varying widths to reduce cost.

대표청구항 ▼

In a tillage implement having a transversely extending rigid main frame adapted for forward movement over the soil, a plurality of rearwardly located earth-working tools supported from the main frame, means for moving the frame vertically to vary the depth of penetration of the tools over a substant

In a tillage implement having a transversely extending rigid main frame adapted for forward movement over the soil, a plurality of rearwardly located earth-working tools supported from the main frame, means for moving the frame vertically to vary the depth of penetration of the tools over a substantial preselected range, and a trash-sizing gang assembly supported forwardly of the earth-working tools comprising: a transversely extending gang tube, a standard having an upper end connected to the gang tube and a lower end extending generally downwardly and rearwardly from the gang tube, a gang of cutter blades rotatably mounted at the lower end of the standard, and bracket means rockably connecting the gang tube to the main frame for supporting the gang of cutter blades generally transverse to the forward direction and permitting the gang to rock vertically below the main frame over a working range of distance approximately equal to that of the preselected range, and wherein said bracket means includes a fore-and-aft extending arm member, a first pivot connecting the forward end of the member to the frame, an upwardly and rearwardly directed member fixed to the frame and including a downwardly and forwardly directed spring-abutting surface located rearwardly of and above the aft end of the arm member, a spring compressed between the spring-abutting surface and the aft end of the arm member and acting through a moment arm which decreases as the arm rocks upwardly to compress the spring for automatically maintaining a substantially constant down pressure of the gang against the soil as the gang rocks vertically over the entire working range.