Swivel hitch for chisel plows

Claim 1

In combination, an agricultural implement having a transversely extending frame member, said frame member including means for connection to the upper arm of a tractor three-point hitch, and a swivel hitch assembly operatively secured to said frame member, said swivel hitch assembly comprising upper and lower spaced-apart plates having rearward and forward ends and opposite ends, said plates being secured at their rearward ends to said frame member; a substantially horizontally disposed and transversely extending flat bar received between said plates and pivotally secured at its center length thereto, about a substantially vertically disposed axis located centrally of the plates; said bar being as long as said plates permit said plates to resist vertical pivoting of said bar with respect to said plates and having means at its opposite ends for connection to the lower arms of the three-point hitch whereby said implement may pivot with respect to said tractor three-point hitch as said tractor is turning.