A hydraulic assembly for supplying an attachment with hydraulic power of an agricultural towing vehicle, including a hydraulic work port for the passage of a hydraulic medium delivered by a pump, a pressure port, hydraulically connected to the work port, for delivering hydraulic power to the attachment, a hydraulic feedback port for receiving a hydraulic feedback pressure from the attachment, a signal port for delivering a feedback signal in dependence on the hydraulic feedback pressure, and a pressure sensor, between the hydraulic feedback port and the signal port, for conversion of the feedback pressure into the feedback signal.

A hydraulic assembly for supplying an attachment with hydraulic power of an agricultural towing vehicle, including a hydraulic work port for the passage of a hydraulic medium delivered by a pump, a pressure port, hydraulically connected to the work port, for delivering hydraulic power to the attachment, a hydraulic feedback port for receiving a hydraulic feedback pressure from the attachment, a signal port for delivering a feedback signal in dependence on the hydraulic feedback pressure, and a pressure sensor, between the hydraulic feedback port and the signal port, for conversion of the feedback pressure into the feedback signal.

A ditch forming implement, for use with a working vehicle, has a frame for towing connection to the working vehicle and which supports a rotatable impeller member thereon for spreading soil in a laterally outward direction relative to a forward path of the implement. A driven pulley wheel is fixed to a rear of the impeller member for rotation together relative to the frame. A drive shaft assembly operatively transfers rotational drive from a power take-off of the working vehicle to a driven pulley wheel on the frame, to be subsequently transferred to the driven pulley wheel by a drive belt connected between the driven and drive pulley wheels.

A ditch forming implement, for use with a working vehicle, has a frame for towing connection to the working vehicle and which supports a rotatable impeller member thereon for spreading soil in a laterally outward direction relative to a forward path of the implement. A driven pulley wheel is fixed to a rear of the impeller member for rotation together relative to the frame. A drive shaft assembly operatively transfers rotational drive from a power take-off of the working vehicle to a driven pulley wheel on the frame, to be subsequently transferred to the driven pulley wheel by a drive belt connected between the driven and drive pulley wheels.

A coupling device to connect and separate first and second agricultural implements for tandem towing behind a tractor and to provide hydraulic power to the second agricultural implement for its powered operation is disclosed. Such coupling device has a frame having a separation distance, first connection means for attaching the frame to the rear of a first agricultural implement, second connection means for attaching the frame to the front of a second agricultural implement, and a hydraulic pump system to power the second agricultural implement. A dolly wheel and spindle assembly may adjoin the frame.

A coupling system includes three axes to enable a trailer to be articulated in all directions when the trailer is hitched to a towing vehicle, such as a tractor. The pitch axis, which is either centered with the other two axes or is offset towards the tractor, limits the forces transmitted to the tractor drawbar in the case of a high vertical load. Thus, the coupling system with three offset axes provides the fundamental advantages of a universal joint but, by offsetting the pitch axis forward, the coupling system particularly and advantageously provides an additional and innovative solution whereby large vertical loads from certain machines towed on the tractor drawbar can be better withstood.

This disclosure relates to the control of the operating parameters or other settings of a towed or mounted tractor implement. A control panel is carried by the implement frame, outside the tractor. It receives commands for controlling the implement directly at the vicinity of the implement, including at least the raising and lowering of a toolbar of the implement.

This disclosure relates to the control of the operating parameters or other settings of a towed or mounted tractor implement. A control panel is carried by the implement frame, outside the tractor. It receives commands for controlling the implement directly at the vicinity of the implement, including at least the raising and lowering of a toolbar of the implement.

A farm implement for tilling soil includes a frame having a transverse axis. The farm implement further includes at least one first ground engaging tool coupled to the frame and having a first tool axis oriented within a range of from parallel to the transverse axis to about 30 degrees of the transverse axis and at least one first finishing tool coupled to the frame adjacent to the first ground engaging tool, and having an axis generally aligned with or substantially parallel to the first tool axis. The at least one first finishing tool is configured to control a ground working depth of the at least one first ground engaging tool.

A drawbar apparatus is provided for coupling an earth-working tool to a frame of an agricultural implement. The drawbar apparatus comprises a drawbar. The drawbar comprises a first portion coupled to the frame and a second portion. A joint comprises a first bracket comprising a protrusion. The protrusion defines a first aperture. The first bracket is coupled to one of the second portion of the drawbar and the earth-working tool. A second bracket defines a channel configured to receive the protrusion. The channel defines a second aperture on a first side of the channel and a third aperture on a second side of the channel. The second bracket is coupled to the other of the second portion of the drawbar and the earth-working tool. A fastener is positioned through the first aperture, the second aperture, and the third aperture. The protrusion is configured to move laterally in the channel.