Abstract: A hydraulic reel drive wherein the reel motor is driven by a hydraulic pump, which is adjustable in a continuous manner and operates therewith in a closed oil circulating system. The advantage of this arrangement is that the reel always rotates uniformly independently of the instantaneous load thereon. Another advantage thereof is that by using a hydraulic pump, which is adjustable in a continuous manner, only that amount of oil is ever circulated as is required to drive the reel at a predetermined rotational speed.

Abstract: The invention describes a hydraulic reel drive wherein the reel motor is driven by a hydraulic pump, which is adjustable in a continuous manner and operates therewith in a closed oil circulating system. The advantage of this arrangement is that the reel always rotates uniformly independently of the instantaneous load thereon. Another advantage thereof is that by using a hydraulic pump, which is adjustable in a continuous manner, only that amount of oil is ever circulated as is required to drive the reel at a predetermined rotational speed.

Abstract: A control unit for an agricultural harvesting machine is arranged so that the width of a passage or opening between two machine elements can be precisely adjusted as simply as possible. Adjustable stops are in the form of plungers are displaceably guided in cylinders. Each cylinder is connected to a multi-chamber pump which contains a displaceable stepped piston. Individual chambers of the multi-chamber pump and the steps of the piston are mutually matched so that the same quantity of hydraulic fluid is squeezed out from the two chambers of the multi-chamber pump and the plungers move in and out in synchronism. The control unit is particularly suitable for use in foragers, combines other agricultural harvesting machines.

Abstract: A device for the control and adjustment of hydraulic cylinders on work attachments and assemblies of work machines, preferably self-propelled harvesting machines. Increasing the performance of harvesting machines for bringing in crops efficiently and without loss requires rapid, uncomplicated adaptation of the harvesting machines and front harvesting attachments to the respective load and operating conditions. The front harvesting attachments and wheel carriages are connected to the hydraulic circuit of the harvesting machine and driven automatically by means of the electronic control system as a function of the respective working and operating conditions.

Abstract: The present invention relates generally to agricultural machinery and, more particularly, to a device for controlling a double-acting steering cylinder of a steering system, having two working connections of the steering cylinder, wherein the working connections are each connected by means of an input pipe or an output pipe to a valve unit, which comprises two switching valves that can be moved alternately into a first switching position and into a second switching position and the steering cylinder in the first switching position of the first switching valve admits a fluid at the first working connection and the steering cylinder in the second switching position of the second switching valve admits the fluid at the second working connection.

Abstract: An agricultural machine has a main machine, an additional device coupled with the main machine, a hydraulic unit performing control or working functions and including hydraulic valves and hydraulic supply and return conduits, a control current unit for controlling the hydraulic valves and provided with electrical conductors, plug means conductively connecting the hydraulic conduits and the electrical conductors in a region of a separating point between the additional device and the main machine, the plug means including a plug and a plug socket, and a two-part coupling unit formed so that in a region of separating point the plug and the plug socket, the hydraulic supply and return conduits and the electrical control conductors are installed in the coupling unit in positions corresponding to one another, the coupling unit including one coupling half associated with the main machine and another coupling half associated with the additional device.

Abstract: A self-propelling agricultural machine, especially a self-propelling harvester thresher comprises a machine part having a front side, a working implement mounted on the front side of the machine part and turnable in a direction which is transverse to a travelling direction, and a unit for mounting the working implement on the machine part and including two cylinder-piston units having pistons with piston rods which are connected with the working implement and also having cylinders which are connected with the machine part, the connecting unit also having a switching valve, the cylinders of the cylinder-piston units having piston-side chambers which are connected with one another and piston rod-side chambers which are individually connected to the switching valve.

Abstract: A self-propelling agricultural machine, particularly a harvester thresher, comprises a machine unit provided with supporting elements, a front working implement turnable transversely to a traveling direction and having upper receiving elements for the supporting elements, and lower locking elements, and cylinder-piston units each having a cylinder and a piston with a piston rod having a free end, the supporting elements being mounted on the free ends of the piston rods of the cylinder-piston units, while the cylinders being connected with the machine unit.

Abstract: In a harvester thresher an arrangement for uniform distribution of agricultural product on a reciprocating transporting and cleaning organs of a sieve conveyor includes an upper sieve of a sieve box which is formed so that it has a transporting component toward a side changeable in its value in dependence upon an inclined position of the harvester thresher during threshing on an inclined surface.

Abstract: In a harvester thresher an arrangement for uniform distribution of agricultural product on a reciprocating transporting and cleaning organs of a sieve conveyor includes an upper sieve of a sieve box which is formed so that it has a transporting component toward a side changeable in its value in dependence upon an inclined position of the harvester thresher during threshing on an inclined surface.