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.

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.

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 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 lift-suspended mower for an agricultural vehicle. The lift-suspended mower includes a frame, one or more cutting devices that are movably mounted with respect to the frame for cutting crop material on a ground surface, a first wheel mounted to the frame for contacting the ground surface and supporting the frame above the ground surface, and a first suspension system interconnecting the first wheel to the frame. The first suspension system includes (i) an actuator that is selectively actuable to either raise or lower to a predetermined degree the first wheel relative to the frame or vice versa, and (ii) a device for permitting the first wheel to move toward the frame when a pressure exerted by the first wheel onto the ground surface increases, wherein the device operates independently of the actuator.

A lift-suspended mower for an agricultural vehicle. The lift-suspended mower includes a frame, one or more cutting devices that are movably mounted with respect to the frame for cutting crop material on a ground surface, a first wheel mounted to the frame for contacting the ground surface and supporting the frame above the ground surface, and a first suspension system interconnecting the first wheel to the frame. The first suspension system includes (i) an actuator that is selectively actuable to either raise or lower to a predetermined degree the first wheel relative to the frame or vice versa, and (ii) a device for permitting the first wheel to move toward the frame when a pressure exerted by the first wheel onto the ground surface increases, wherein the device operates independently of the actuator.

An agricultural baling machine including: a frame; a connection point for attaching to a towing vehicle; a plunger in a bale-forming chamber; a driveline for taking power from the towing vehicle and causing reciprocal rectilinear motion of the plunger in the bale-forming chamber; and a drawbar member that provides a mechanical link between the connection point and the frame. The drawbar member is rotatably coupled to the frame such that the height of the connection point relative to the frame of the baling machine is adjustable.

The invention refers to an agricultural system and a method of operating the system. An implement is connected to a tractor. A tractor control network (4) and an implement control network (5) are connected through a data bus (6). Control signals are transmitted over a signal line of the data bus (6). A driving power supply is provided by a tractor power supply (13) to a working unit (10b) of the implement through a driving power supply line, the tractor power supply (13) configured to provide a plurality of different driving voltages. Driving power supply control signals are received in the tractor control network (4), the driving power supply control signals being sent from the implement control network (5) over the signal line and indicating a present driving voltage. The present driving voltage is supplied over the driving power supply line to the working unit (10b).

A tool bar and hydraulic system for a large scale agricultural implement. The tool bar includes opposed pivotable wings that are extended in a field configuration and retracted in a transport configuration. In some embodiments, each pivotable wing includes two lift assist assemblies for aiding in the execution of turns in the field, and for aiding in the transport of the agricultural implement. The tool bar may be configured to compensate for twist of the pivotable wings when in the transport configuration. The hydraulic system provides a stiffening of the tool bar for lift assist during field operation while providing for flexing of the tool bar during transport.

A tool bar and hydraulic system for a large scale agricultural implement. The tool bar includes opposed pivotable wings that are extended in a field configuration and retracted in a transport configuration. In some embodiments, each pivotable wing includes two lift assist assemblies for aiding in the execution of turns in the field, and for aiding in the transport of the agricultural implement. The tool bar may be configured to compensate for twist of the pivotable wings when in the transport configuration. The hydraulic system provides a stiffening of the tool bar for lift assist during field operation while providing for flexing of the tool bar during transport.