Agricultural implement carriage system

A multi-section agricultural implement comprising:

• (a) a plurality of spaced transversely aligned sections each comprising a main frame independently supported by ground-engaging wheels, a ground-working tool supporting sub-frame, linkage support means on the main frame attaching said sub-frame to the main frame, the support means including lifting means operable to raise and lower the sub-frame relative to the ground, each said sub-frame comprising a series of transversely extending longitudinally spaced chassis members, the length of each which is greater than the width of its associated main frame, the chassis members being arranged with their ends projecting to each side of the main frame, and longitudinally extending transversely spaced brace members interconnecting said chassis members;
• (b) chain attachment means between each said main frame and its associated said sub-frame for suspending the sub-frame from its said main frame and for limiting the depth of penetration of the ground-working tools into the ground, said chain attachment means comprising a length of chain straddling its associated main frame and having chain portions respectively depending from the sides of a said main frame, said depending chain portions being attached to the associated sub-frame centrally thereof;
• (c) universal joint connection means detachably interconnecting each sub-frame with an adjacent said sub-frame allowing relative universal articulating movement therebetween;
• and
• (d) a forwardly extending towing frame comprising at least two towing frame members detachably connected at their rear ends by pivot means to the front of respective said sub-frames, each said pivot means being located in approximately the same plane as the plane of its corresponding sub-frame, means interconnecting the forward ends of said towing frame members, and hitch means for hitching to a towing vehicle such as a tractor.