Soil zone-builder coulter closer/tiller with vertical response mechanism and shank head

A soil manipulating device comprising

• a shank for tilling a seed bed;
• a pair of coulter blades positioned behind said shank on opposite sides of said groove for closing said groove;
• a rear finishing device positioned behind said coulter blades;
• a connector assembly which communicates displacement to said coulter blades;
• a top parallel arm having a front end and a rear end wherein said front end is pivotally connected to said shank, and said rear end is pivotally connected to said connector assembly;
• a bottom parallel arm having a front end and a rear end wherein said front end is pivotally connected to said shank, and said rear end is pivotally connected to said connector assembly;
• a rear arm having a front end and a rear end wherein said front end is pivotally connected to said connector assembly and said rear end is connected to said rear finishing device;
• a first spring having a top end and a bottom end, wherein said bottom end is attached to said bottom parallel arm and said top end is attached to an adjustment arm;
• and
• wherein a forward end of said adjustment arm is pivotally connected to said top parallel arm at a first connection point and a rear end of said adjustment arm being adapted to communicate any downward force imparted to the adjustment arm to said upper parallel arm.

A method of controlling the soil penetration depth of a pair of coulter blades on a soil manipulation device also having soil tilling shank preceding the coulter blades and a rear finishing device following the coulter blades wherein the tilling shank, coulter blades, and rear finishing device are directly connected by a framework supporting the coulter blades and having a coulter spring for providing downward force on the coulter blades, the steps comprising:

• adjusting the coulter spring to a desired one of plural predetermined bias force settings;
• setting the desired working depth of the coulter blades and framework in relation to the tilling shank;
• propelling the soil manipulation device forward;
• lowering the tilling shank, coulter blades, and rear finishing device into the soil;
• raising the coulter blades in response to changing field conditions by transmitting an upward force to the framework when changing field condition displace the rear finishing device upwards, said upward force being communicated to the framework by means of a rear arm pivotally attached to the frame work at first end and the rear finishing device at a second end and a rear arm spring attached to the framework at a first end and to the rear arm at a second end.

A soil manipulating device comprising:

• a shank for tilling a seed bed and forming a groove in soil:
• a coulter assembly attached directly to said shank, the coulter assembly including a pair of coulter blades biased downwardly toward the soil, and positioned behind said shank on opposite sides of said groove for closing said groove;
• a rear finishing device for smoothing and finishing the soil by rolling over the soil behind the coulter blades, the rear finishing device being attached directly to the coulter assembly, and being downwardly biased toward the soil;
• wherein movements of said rear finishing device caused by the soil are communicated to said coulter assembly to counteract the coulter blade downward bias.