Patent ID: 7607489

Claim:
An agricultural implement, comprising: a frame having a front end, a rear end, a left side, a right side, and a plurality of tires; a plurality of harrow members; each said harrow member having a plurality of discs and a chain with a plurality of links; said discs being coupled to said links and extending generally outwardly therefrom; wherein a first said harrow member is operatively coupled to said frame generally adjacent said front end and said left side, wherein said first harrow member extends in a diagonal direction; wherein a second said harrow member is operatively coupled to said frame generally adjacent said front end and said right side, wherein said second harrow member extends in a diagonal direction; wherein a third said harrow member is operatively coupled to said frame generally adjacent said left side and said rear end, wherein said third harrow member extends in a diagonal direction; wherein a fourth said harrow member is operatively coupled to said frame generally adjacent said right side and said rear end, wherein said fourth harrow member extends in a diagonal direction; wherein: said first, second, third, and fourth harrow members are outer harrow members; each said outer harrow member chain has an end coupled to a tensioning assembly; and each said tensioning assembly has a generally vertical shaft passing through said frame and having upper and lower arms extending outwardly therefrom, said lower arm being coupled to a respective said chain end, said upper arm being coupled to said frame by a spring.