Abstract: An agricultural harvesting machine, such as a forage harvester, comprises a plurality of crop processing means (20, 21, 26, 27, 36,38, 49), which are driven in a first sense by an engine (70) through a main clutch (124) and a first drive line portion (111, 112, 39, 87, 89) or a second drive line portion (73, 75, 77, 80, 81, 83). A motor means (110), coupled to the first drive line portion and operable to drive one of the crop processing means, such as a cutterhead (36), in a second sense, opposite to the first sense, is permanently coupled to said first drive line portion, so that during normal harvesting it can provide driving power to auxiliary devices. The second drive line portion is linked to the first drive line portion by means of a belt transmission (95, 99, 100), which is engaged by a hydraulic cylinder (106) when the main clutch (124) is engaged. The first drive line comprises an overrun clutch (87) which is disengaged when the rotation of the cutterhead (36) is reversed by the motor means (110).

Abstract: A header for an agricultural machine having a cutterbar, an auger and a rotatable reel, the reel having a main axis of rotation around which the reel is rotated in one direction, crop-engaging members being rotatably mounted on the reel around respective pivot axes disposed around the main shaft, is disclosed wherein inclination control means including steering means positioned eccentrically of the main axis are operable, during rotation of the reel in said one direction, to rotate the crop-engaging members around the respective pivot axes in the opposite direction so as to maintain the crop-engaging members at a fixed positional inclination relative to the horizontal so that the free ends of the crop-engaging members define a circularly shaped locus.