Patent ID: 6068061
Filing Date: 2000-05-30
Classification: A01B

Abstract:
A soil manipulating device comprising:a shank for tilling a seed bed and forming a groove in soil;a coulter blade assembly having 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 framework connecting (a) said shank, (b) said coulter blade assembly, and (c) said rear finishing device, said framework having a dual arm linkage wherein said dual arms pivotably connect said coulter blade assembly to said shank and having a first variable bias force means having an initial bias force which communicates through said framework a downward biasing force to said coulter blade assembly; andwherein vertical displacement of said rear finishing device communicates an upward force through said framework to said coulter blades which is counter to said downward biasing force.