Abstract: A plant lifting device is mounted on an agricultural machine and includes a drum that is articulated to a frame around a first substantially horizontal axis and which includes a substantially cylindrical casing that has openings through which seizing means intended to lift plants situated outside the casing are able to protrude. A rotor is provided onto which the seizing means are fastened and that is able to be driven in rotation relative to the frame around a second axis directed substantially parallel to the first axis and separate from it, in which, when the device is operated, the second axis is fixed relative to the first axis. A rotational movement transmission means includes at least one rod articulated to the drum on one hand and to the rotor on another hand.

Abstract: A plant lifting device is mounted on an agricultural machine and includes a drum that is articulated to a frame around a first substantially horizontal axis and which includes a substantially cylindrical casing that has openings through which seizing means intended to lift plants situated outside the casing are able to protrude. A rotor is provided onto which the seizing means are fastened and that is able to be driven in rotation relative to the frame around a second axis directed substantially parallel to the first axis and separate from it, in which, when the device is operated, the second axis is fixed relative to the first axis. A rotational movement transmission means includes at least one rod articulated to the drum on one hand and to the rotor on another hand.

Abstract: A haymaking machine includes a chassis supported directly or indirectly on the ground by wheels and a working device connected to the chassis. The chassis includes a coupling device to which two hitching pieces are articulated each bearing a hitching pin for the hitching to the respective lower arms of a tractor. Each hitching piece cooperates with a respective return device. Each return device storing energy when the corresponding hitching pin moves, relative to the coupling device, upward from a first position. Each return device is able to release that energy to the corresponding hitching pin by returning the hitching pin toward the first position. Each return device stores energy when the corresponding hitching pin moves, relative to the coupling device, downward from a second position, and each return device can release that energy to the corresponding hitching pin by returning the hitching pin toward the second position.

Abstract: A haymaking machine includes a chassis supported directly or indirectly on the ground by wheels and a working device connected to the chassis. The chassis includes a coupling device to which two hitching pieces are articulated each bearing a hitching pin for the hitching to the respective lower arms of a tractor. Each hitching piece cooperates with a respective return device. Each return device storing energy when the corresponding hitching pin moves, relative to the coupling device, upward from a first position. Each return device is able to release that energy to the corresponding hitching pin by returning the hitching pin toward the first position. Each return device stores energy when the corresponding hitching pin moves, relative to the coupling device, downward from a second position, and each return device can release that energy to the corresponding hitching pin by returning the hitching pin toward the second position.

Abstract: A rotor comprising a rotary housing and at least one oscillating arm, the oscillating arm comprising at least an internal part connected to the housing and an external part carrying tools, one of the parts comprising an engaging portion able to engage partially in an engaged portion of the other part, the portions each comprising at least one hole and being able to be assembled by a connecting device comprising at least one threaded element with a shoulder, the threaded element passing through each hole of the portions. The connecting device comprises an insert with at least one tapping able to be inserted inside the engaging portion, the threaded element is screwed in the tapping and the shoulder rests on the engaged portion to tighten the engaged portion against the engaging portion.