Abstract: An automatic support for folding frames such as those used in many agricultural implements. The folding frames include at least one generally horizontally disposed main frame section having at least one wing frame section hingedly connected thereto, the wing frame being movable between a lowered, outwardly extended working position wherein it is substantially coplanar with the main frame, to an upwardly folded transport position wherein it generally overlies the main frame and forms an included angle of less than 90.degree.. The automatic support includes a support arm, connecting link and pivot link all of which are pivotally interconnected with the wing frame section to form a four bar linkage arrangement. When the wing frame is in its extended working position the support arm is in close proximity to the wing frame providing the implement with a low overall profile.

Abstract: A hitch locking mechanism for an implement or the like having a frame and transport wheels movable between lowered transport positions wherein the frame is raised for transport and raised positions wherein the frame is lowered for an operating mode, and having a hitch bar hinged to the frame, the hitch locking mechanism being interconnected between the transport wheels and the hitch bar and being operative to maintain the hitch bar in fixed relation to the frame when the transport wheels are in their lowered transport positions, and operative to enable hinged movement of the hitch bar relative to the frame when the transport wheels are in their raised positions.

Abstract: A tool bar control mechanism for an agricultural implement or the like having a frame, a pair of generally transverse tool bars mounted on the frame for rotation about their longitudinal axes and carrying ground working tools such as spring teeth for movement therewith, and transport wheels mounted on the frame and movable between lowered transport positions wherein the frame and ground working tools are raised for transport and raised positions wherein the frame and tools are lowered for ground working operation, the tool bar control mechanism including linkage means operatively interconnecting the transport wheels with the tool bars so as to effect predetermined rotation of the tool bars and ground working tools in response to movement of the transport wheels between their lowered and raised positions and positively maintain the tools in set position during ground working operation.

Abstract: A transport lock system for an implement or the like having a frame and transport wheels movable between lowered transport positions wherein the frame is raised for transport and raised positions wherein the frame and ground working tools thereon are lowered for an operating mode, and having a fluid pressure operated cylinder operative to move the transport wheels between their raised and lowered positions. The transport lock system includes a lock link and locking pin which are selectively cooperable to prevent an operator from lowering the frame during a transport mode and includes a flow control valve operative in response to movement of the locking pin to a locking position to prevent the operator from inadvertently applying fluid pressure to the cylinder in a manner to lower the frame. The control valve is operative in response to movement of the locking pin to a non-locking position to enable actuation of the cylinder to raise and lower the frame.