Abstract: A cutting device for a cutting machine including a driver driven by a drive shaft, a support structure secured to the driver and at least one drive device intended to drive a cut product toward the rear of the cutting machine. The drive device includes at least two drive walls which extend approximately right around the support structure and which are fixed removably to the support structure by assembly elements.

Abstract: A method and device for automatically adjusting the lightening of a working unit (U) of a machine by use of a hydraulic ram (57) associated with a hydropneumatic accumulator (67). Use is made of a second hydraulic ram (58) of which the piston (53), which can move as far as a predetermined position (PP) in the cylinder (C2) and which is detached from the rod (46) of the first hydraulic ram (57), acts directly or indirectly on the latter rod via the oil (O) contained in the first hydraulic ram (57). The working unit (U) is raised and lowered by the second hydraulic ram (58). When raising the working unit (U), the volume of oil in the first hydraulic ram (57) is increased or decreased in such a way that the working unit (U) is always at a predetermined height (HP) at the end of raising travel.

Abstract: An agricultural machine includes a body, a connecting mechanism, an operating device for pivoting the connecting mechanism into at least two working positions, transmission elements which include at least one gearbox, and a control mechanism intended to pivot the gearbox into operating positions corresponding to the working positions of the connecting mechanism. In accordance with the invention, the control mechanism is installed, among others, between the gearbox and the operating device. This control mechanism can also include a first control cylinder installed between the connecting mechanism and the body and connected in series to a second control cylinder installed between the body and the gearbox.

Abstract: An agricultural machine includes a body, a connecting mechanism, an operating device for pivoting the connecting mechanism into at least two working positions, transmission elements which include at least one gearbox, and a control mechanism intended to pivot the gearbox into operating positions corresponding to the working positions of the connecting mechanism. In accordance with the invention, the control mechanism is installed, among others, between the gearbox and the operating device. This control mechanism can also include a first control cylinder installed between the connecting mechanism and the body and connected in series to a second control cylinder installed between the body and the gearbox.

Abstract: A mowing machine includes a harvesting mechanism which extends during mowing transversely to a working direction, and a lightening device for the harvesting mechanism which includes at least one elastically deformable member whose action can be adjusted by way of an adjustment device connected to the elastically deformable member. The elastically deformable member can include a deformable envelope which contains a gas under adjustable pressure. The adjustment device can include a supply circuit provided with at least one electrovalve or gate connected to the deformable envelope. In an alternative embodiment, the adjustment device can include at least one jack connected to a mechanical spring, and a supply circuit provided with at least one gate or electrovalve connected to the jack.

Abstract: A valve includes a distributor with four ports and two positions. In a first position, a first non-return valve allows only circulation of a fluid from the first port toward the third port, while the second port and the fourth port are directly in communication with one another. In a second position, the third port and the fourth port are directly in communication with one another, while a second non-return valve allows only circulation of fluid from the third port and the fourth port in communication toward the first port.

Abstract: An agricultural machine has a fixed structure, a retractable assembly connected to the fixed structure by at least one joint such that said retractable assembly can move to at least one locking position, and a locking mechanism. The locking mechanism includes (i) at least one stop element mounted for movement with one of the fixed structure and retractable assembly and cooperable with the other of the fixed structure and the retractable assembly to lock the retractable assembly in one locking position; (ii) at least one elastic element cooperating with the at least one stop element to bias the at least one stop element into a stop element lock position in cooperation with the other of the fixed structure and the retractable assembly so as to lock the retractable assembly in the locking position. The stop element is enclosed in the stop lock position such that the stop element can be moved from the said stop lock position only by a special tool.

Abstract: The invention relates to a mower comprising first and second processing rollers, drive elements that are used to drive one of the first and second processing rollers and transmission elements that transmit the movement of rotation from one of the processing rollers to the other. The transmission elements are installed in a housing and the housing comprises a first part and a second part, connected to one another by a joint with a geometric axis directed at least approximately parallel to the axes of rotation of the processing rollers. Each of the parts of the housing is, in addition, mounted to pivot at least approximately around the axis of rotation of the corresponding processing roller.

Abstract: A farm machine having a first joint with an upwardly directed axis such that in the vicinity of the first joint, a body is connected to a connecting device with a second joint. The second joint having an axis at least approximately perpendicular to the axis of the first joint and to a longitudinal axis of the body. A universal joint telescopic shaft transmits the rotation movement of an output shaft of a second housing to an input shaft of an intake housing connected to the body.

Abstract: A harvesting machine comprises a body which rests on the ground both in a work position and in a transport position through at least one wheel connected directly or indirectly to the body. The harvesting machine includes an orientation element used to orient the wheel in a direction of transport. The orientation of the wheel for the purpose of transport is performed in a simple and quick manner, while allowing, during work, the pivoting of the wheel around its shaft connecting it to the body.

Abstract: The invention relates to a farm machine. According to the present invention, the farm machine features a detection device which detects an intermediate position of a connecting device and cuts off the supply to a maneuvering element when the connecting device comes from an end work position into an intermediate position. The action of the detection device can be cancelled so that the maneuvering element can bring the connecting device beyond the intermediate position into the other end position.

Abstract: A novel harvesting machine is usable with a novel method for transformation from an operating position to a transport position. The machine has a set of work wheels and a set of transport wheels which extend on transverse axes. The transport wheels extend substantially parallel to, and on both sides of the longitudinal axis of the body of the machine. When the work wheels are lowered the resulting raising of the body of the machine permits the transport wheels to be lowered. Subsequently, the body can be lowered onto the transport wheels and the work wheels raised. In a subsequent operation the tongue of the machine is pivoted relative to the body into a transport position parallel to the longitudinal axis of the body. An additional connecting element may be provided for supporting the body when in the transport position.

Abstract: A mower having a plurality of rotary cutting elements each of which is provided with at least one cutting tool. At least one of the rotary cutting element is driven by a transmission means housed in a housing located under the rotary cutting elements. The housing is composed of cases in which the rotary cutting elements are guided in rotation, and a brace element determines the distance between each two adjacent cases. The housing is made up of at least one module formed by a case and a brace element formed integrally with the case. The front edge of each of said brace elements is pointed over at least a part of its length. At least said at least one rotary cutting element is mounted on a shaft guided in rotation in the bore of a bearing cylinder.

Abstract: The mower comprises at least two mowing groups 6, each of the at least two mowing groups 6 being composed of a cutting bar 8 equipped with cutting elements, the cutting bars 8 being connected to one another by a joint 9 and the mowing groups 6 being connected to the chassis 1 by a suspension device 12, 20, 18; 12, 20, 39. The suspension device 12, 20, 18; 12, 20, 39 comprises an intermediate structure 12 movably connected to the chassis 1 by a connecting device 18; 20, 39. Each one of the at least two mowing groups 6 is connected to the intermediate structure 12 by a joint 16 having an axis at least approximately perpendicular to the vertical plane containing the longitudinal axis of the corresponding cutting bar 8. The joints 16 are capable of movement in the direction crosswise to the direction of work 25 in relation to the intermediate structure 12.

Abstract: A mower having a plurality of rotary cutting elements each of which is provided with at least one cutting tool. At least one of the rotary cutting element is driven by a transmission means housed in a housing located under the rotary cutting elements. The housing is composed of cases in which the rotary cutting elements are guided in rotation, and a brace element determines the distance between each two adjacent cases. The housing is made up of at least one module formed by a case and a brace element formed integrally with the case. The front edge of each of said brace elements is pointed over at least a part of its length. At least said at least one rotary cutting element is mounted on a shaft guided in rotation in the bore of a bearing cylinder.

Abstract: The rotary mower of the invention includes a housing (9) formed by modules (10) which have flanges (29, 30) making it possible to connect them to one another by means of assembly elements (28). The flanges (29, 30) are formed by at least two wings spaced from one another and directed forwardly. The flanges (29, 30) are formed by at least two wings spaced from one another and directed forwardly. The wings are connected by at least one connecting wing directed crosswise to the direction of advance (6) and connected to the body of module (10).

Abstract: A mower comprising at least one mowing unit 1 provided with a cutting bar 2 on the upper face 8 of which are placed a plurality of cutting elements 5, 6, and 7 mounted to rotate around axes 15 directed upwardly with the aid of a plurality of shafts 9, 10, and 11 guided in rotation in a housing 4 of the cutting bar 2. A support structure 3 is placed at a certain distance above the cutting bar 2 and is connected to the cutting bar 2. The support structure 3 includes a beam 28 extending crosswise to the direction of advance of the mowing unit during use. The beam 28 is connected to a strut 29 extending downwardly in the direction of a cutting element 7. The strut 29 is connected to the shaft 11 by a bearing 132. The bearing 132 includes a cylindrical guide 31, 32 the axis of which is merged with the axis 15 of the shaft 11. A connecting device 35 connects the strut 29 to the beam 28.

Abstract: The rotary mower of the invention includes a housing (9) formed by modules (10) which have flanges (29, 30) making it possible to connect them to one another by means of assembly elements (28). The flanges (29, 30) are formed by at least two wings spaced from one another and directed forwardly. The wings are connected by at least one connecting wing directed crosswise to the direction of advance (6) and connected to the body of module (10).

Abstract: The connecting device 5 which links the mowing group 2 to the hitching device 3 comprises a connecting beam 21 and two connecting bars 38 and 39 that are connected respectively to the end of the connecting beam 21 and to the hitching device 3 by means of joints 36, 37, 40, and 41 so as to form with the hitching device 3 and the connecting beam 21 a deformable quadrilateral. The elastically deformable element 45 of the load-reducing mechanism 43 extends at least between two sides of the deformable quadrilateral, so as to create at the level of the connection 22, 23, 25, and 55 between the connecting beam 21 and the mowing group 2 a force directed upwardly.

Abstract: A mower having a plurality of rotary cutting elements each of which is provided with at least one cutting tool. At least one of the rotary cutting element is driven by a transmission means housed in a housing located under the rotary cutting element. The housing is composed of cases in which the rotary cutting elements are guided in rotation, and a brace element determines the distance between each two adjacent cases. The housing is made up of at least one module formed by a case and a brace element formed integrally with the case. The front edge of each of said brace elements is pointed over at least a part of its length. At least said at least one rotary cutting element is mounted on a shaft guided in rotation in the bore of a bearing cylinder.