Soil conditioning rotary reel

The soil conditioning rotary reel having a plurality of support plates spaced along an axial support shaft, and a plurality of bars affixed to said support plates to form a reel, the improvement comprising:

• said support shaft has first and second opposing ends;
• said plurality of generally support plates are circular and affixed to and uniformly spaced along the length of said support shaft, said plurality of support plates including two end plates, one adjacent to but spaced from each said first and second ends of said support shaft, each said support plate including a plurality of generally radially directed slots regularly spaced along the periphery thereof;
• said plurality of elongate bars are affixed to each support plate, said bars being rectangular in cross-section and each fitting into one of said plurality of slots on each said support plate such that a relatively thin generally flat edge of the bar is directed generally radially outward;
• each said bar containing a helical twist and said slots in said support plates positioned relative to one another on adjacent support plates such that said bars form a helical cutting edge across the width of the reel;
• the angle of attack of each bar is in the range of 23 to 27 degrees to a line transverse to the direction of travel at 270 degrees, where 180 degrees is the direction of travel, 0 degrees is opposite the direction of travel, 90 degrees is upward and 270 degrees is toward the ground;
• and
• a generally inverted u-shaped support yoke affixed to said first and second ends of said support shaft such that said reel may rotate freely within the support yoke.

A soil conditioning reel comprising:

• an elongate support shaft having first and second opposing ends;
• a plurality of generally circular support plates with an approximate 16 inch diameter affixed to and uniformly spaced along the length of said support shaft, said plurality of support plates including two end plates, one adjacent to but spaced from each said first and second ends of said support shaft, each said support plate including a plurality of generally radially directed slots regularly spaced along the periphery thereof;
• a plurality of elongate bars affixed to each support plate, said bars being rectangular in cross-section, measuring approximately 2.5 inches by approximately 0.313 inches, and each fitting into one said plurality of slots on each said support plate such that a relatively thin generally flat edge of the bar is directed generally radially outward, the straight-line distance between adjacent bars being less than six inches;
• and
• each said bar containing a helical twist and said slots in said support plates positioned relative to one another on adjacent support plates such that said bars form a helical cutting edge across the width of the reel, said twist in said bar between support plates in the range of 8 to 11 degrees.