Abstract: In a forage harvester having a mechanically driven front attachment and hydrostatically driven compression rollers, the front attachment can be disconnected from its mechanical drive and instead connected with a hydrostatic drive of the compression rollers so as to be driven by the hydrostatic drive.

Abstract: A cutting and transporting mechanism for stalk harvesting products comprises at least one cutting disc, at least transporting disc arranged coaxially relative to the cutting disc and provided with a plurality of transporting prongs arranged on a circumference of the transporting disc, a rotatable reamer associated with the transporting prongs at a discharge location. The rotating reamer has a rotary axis located inside a circumference of the transporting disc and is driven in a direction corresponding to a direction of rotation of the transporting disc. The cutting discs carry on their outer sides catching strips extending at a flat angle .beta. to the tangent. They transport the cut product stalks radially inwardly and are inserted in depressions of the transporting discs.

Abstract: A mowing device for stalky stem products has a cutting disc rotatable about a substantially vertical axis, and a transporting disc rotatable coaxially to the cutting disc at a distance from the latter and having a plurality of pocket-shaped recesses on its periphery for receiving stalky stem products. The cutting disc and the transporting disc are driven in opposite directions. A drive drives the cutting disc and the transporting disc in different directions. Also, the cutting disc on the upper side over its periphery can be provided with approximately gap-less elements suitable for preventing falling of stem product stalks cut by the cutting disc.

Abstract: In a device for recognizing ferromagnetic foreign bodies, for protecting the working members of a harvesting machine, having a magnetic field generating device (9), the lines of flux of which run transversely to the direction of transport, and having assigned pick-up coils (15; 16; 17), it is intended to improve the recognition range across the entire width of the feed system, whilst keeping costs low. At the same time, it is intended better to suppress disturbance signals. For this purpose, the magnetic field generating device (9) comprises an odd number of magnetic poles (12; 13; 14), the two outer magnetic poles (13; 14) possessing the same polarity. At least every second magnetic pole (12) is enclosed by a pick-up coil (15). Expediently, three magnetic poles (12; 13; 14) are present, which are all enclosed by a pick-up coil (15; 16; 17) each. The pick-up coils (15; 16; 17) are connected up such that the induced voltages are added together.

Abstract: A corn harvesting implement for a field chopping machine has a drawing-in trough, a plurality of transporting passages supported on the drawing-in trough, the transporting passages including at least two outer transporting passages which are foldable upwardly to a transporting position for obtaining a smaller transporting width and foldable outwardly to a working position. The transporting passages also include stationary transporting passages. The transporting passages are arranged so that in the working position a predetermined distance is provided between at a part of at least one of the upwardly foldable transporting passages and at least a part of a neighboring part of the stationary transporting passages. Means for increasing the distance at least before a beginning of folding the upwardly foldable passages from the working position to the transporting position is provided.

Abstract: A supporting and adjusting device for a counter-cutter rail of a field chopper having a cutting element with a partially surrounding bottom, the device comprises a saddle arranged so that the countercutter rail can lie on the saddle, two levers supported outside a surface of the cutting element and adjusting a distance from the saddle to the outer surface of the cutting element, the saddle being fixedly connectable with the countercutter rail and adjustable about a stationary axis extending parallel to a circumference of the cutting elements so that the saddle together with the countercutter rail can be adjusted to be at different distances to the outer surface of the cutting element.

Abstract: A front attachment of a field chopping machine for picking and transporting stalk fruits standing in a row has a plurality of stalk dividers, at least four transporting passages inclined relative to one another opposite to a travelling direction, and a transporting element provided in each of the transporting passages, wherein two outwardly located transporting passages with their transporting elements are turnable upwardly to an inoperative position each one about an axis extending in the travelling direction and are fixable in this position. The outer transporting passages are turnable about the axle provided on a supporting frame of the attachment.

Abstract: A front attachment of a field chopping machine for picking and transporting stalk fruits standing in a row has a plurality of stalk dividers, at least four transporting passages inclined relative to one another opposite to a travelling direction, and a transporting element provided in each of the transporting passages, wherein two outwardly located transporting passages with their transporting elements are turnable upwardly to an inoperative position each one about an axis extending in the travelling direction and are fixable in this position. The outer transporting passages are turnable about the axle provided on a supporting frame of the attachment.

Abstract: A front attachment of a field chopping machine for picking and transporting stalk fruits standing in a row has a plurality of stalk dividers, at least four transporting passages inclined relative to one another opposite to a travelling direction, and a transporting element provided in each of the transporting passages, wherein two outwardly located transporting passages with their transporting elements are turnable upwardly to an inoperative position each one about an axis extending in the travelling direction and are fixable in this position. The outer transporting passages are turnable about the axle provided on a supporting frame of the attachment.

Abstract: An attachment for a field chopping machine has a cutting device arranged in a picking region of a working unit and having two cutting disks which rotate in opposite directions and arranged so that at least one of the cutting disks is turnable about an further axle which lies in a working direction of the machine normal to its pivot axle and is held in frictional engagement with the other cutting disk under the action of the spring acting on the further axle.

Abstract: An arrangement for grinding a chopping cutter of a drum-chopper machine has a grinding tool, a grinding carriage which carries the grinding tool and is reciprocable parallel to an axis of rotation of the chopper drum over a length of the latter, a drive for driving the grinding carriage and including a double-acting cylinder-and-piston unit with a cylinder movable parallel to the axis of a chopper drum of the machine, and a control device for reversing the direction of movement of the cylinder of the cylinder-and-piston unit and including a control valve connected with the cylinder and two abutment members located at opposite sides of the control valve, as considered in the direction of movement of the cylinder and arranged so that, when the control member meets a respective one of the abutment members, the direction of movement of the cylinder is reversed.