Abstract: A sieve for separating grain crops from a chaff-straw mixture, used in agricultural harvesting machines, particularly harvester threshers and which is passed from below by a blower wind current includes alternating elongated grooves and channels aligned in parallel relative to the crop conveying direction. The grooves and channels are alternately open on the top or on the bottom, respectively, and have lateral legs with openings, through which the crop can pass from the grooves open on the top to the channels open on the bottom.

Abstract: A control device for controlling a cutter table oscillatingly supported on a base unit about an axis of rotation of a harvesting machine, wherein the cutter table is inclinable about the longitudinal axis of a harvester thresher, the inclination being effected by a hydraulically operating cylinder relative to a conveyor channel. The operating cylinder is pivoted at one end to the conveyor channel and, at the other end, to the cutter table. A spring bridges the hydraulically operating cylinder and rests on one end at the operating cylinder and, on the other end, at a piston rod of the operating cylinder and is biased by a bolt nut on a threaded portion of the piston rod so that an imbalance of the cutter table relative to its point of rotation is equalized.

Abstract: A distributing and smoothing tool has a grip (2) releasably connected to a trowel blade (1). A fastening rail (10) has a top hat shape, in cross section, with outwardly bent flanges (14,15) which rest on the upper face (16) of the trowel blade (1). The flanges (14, 15) are connected to the upper face (16) by rows of spot welds (17,18), one row along each flange. The grip (2) is supported by a grip base (5), which is appropriately formed in a U-shape in cross section, and positioned on the fastening rail (10). The end faces (26,27) of the limbs (6,7) of the grip base (5) are supported on the faces of the flanges (14,15) away from the trowel blade 1. An attachment (19) of the fastening rail (10), engages into a recess (20) of the grip base (5), and a knurled screw (23) engages into a threaded borehole (21) of the fastening rail (10) and secures to the grip base (5).

Abstract: The invention concerns a new arrangement of the reaping platform of harvesting machines with a feed drum (2) supported behind the cutter bar (3) in the direction of travel and with, where appropriate, a reel (5) interacting with it, the bearing arrangement of the feed drum (2) being adjustable forwards and backwards in the horizontal direction relative to the cutter bar (3) and, if appropriate, being adjustable so that it can move up and down in the vertical direction relative to the bottom of the reaping platform trough (1).

Abstract: The invention relates to a cutter blade for mowers of harvesting machines the cutter bevel of which comprises two zones of different inclination relative to the blade leaf plane wherein between the zone molded to the cutting edge and the zone extending to the upper blade plane a gradation is provided. It relates furtheron to a method for the production of said cutter bevels on cutting blades of mowers which comprise two zones having different blade angles relative to the blade leaf plane wherein in a first embossing process the zone of the cutter bevel extending to the upper blade plane is pressed into the blade blank in parallel to the cutting edge provided and in a subsequent embossing process, the zone extending to the cutting edge is molded on and the embosssing portion extending beyond the lower blade leaf plane is ground away.

Abstract: A mowing finger for finger bar mowers of harvesting machines having first and second opposing finger parts each formed of flat material. The first and second finger parts are fixedly secured to each other to define a gap therebetween for mowing action between them. The mowing finger has a tapered front portion located forward of the blade gap and a rear portion secured to a finger bar. One of the first or second finger parts includes a twisted portion twisted around the longitudinal axis of the mowing finger and fixedly secured to the other end of the finger parts to provide increased rigidity to the mowing finger. At least one vegetation-excluding deformation is formed in the first or the second finger parts in the area of the blade gap and extends into the blade gap to narrow and obstruct the blade gap against the accumulation of plant matter therein.

Abstract: The invention relates to a reaping-cutter blade for reaping cutters of harvesting machines, with an orifice (11) made, if appropriate, in the base edge, wherein two or more orifices (12) are provided in the blade leaf in front of the cutter bar (4). The orifices can at the same time appropriately have walls which, on one side of the blade, are at an angle of less than 90.degree. relative to the plane of the blade leaf.

Abstract: The invention relates to a drive mechanism for mowing knives moving to and fro on harvesting machines, with a rotor which rotates in a housing and on which a planet wheel has a double mounting, this planet wheel rolling in a fixed inner toothed ring and being connected to a crank, the diameter of the planet wheel corresponding to the radius of the inner toothed ring and the radius of the planet wheel corresponding to the radius of the crank, and the planet-wheel bearing located furthest away in the housing being mounted on the rotor by means of a releasable bearing holder.

Abstract: The invention relates to a cutter for cutter-bar mowers of harvesting machines, with a top cutter (1) and bottom cutter (2) stamped out of flat material and connected to one another in front of the blade gap (3) by projection welding, a layer of material (14) being applied by additional welding to the point of connection (12), directed towards the cutter tip, between the top cutter (1) and bottom cutter (2). The invention also relates to a process for producing such a cutter.

Abstract: The invention relates to a cutting finger for finger-bar cutters of harvesting machines with a top finger and a bottom finger stamped out from flat material and connected to one another in front of the blade gap, in which cutting finger the top finger and/or the bottom finger are deformed in the region located in front of the blade gap and are connected to one another by welding.

Abstract: Holding means for grain lifters, support skids or the like for fastening the latter to the cutter mechanism of a harvesting machine, comprising a device provided at one end of the flat support leg to be secured to the mower cutter bar and a retention bracket provided in spaced relationship from the one end on the support leg and embracing, if necessary under bias, the cutter finger, wherein said retention bracket includes two legs provided on each side of said cutter finger, and a locking device connecting said two legs and overlapping said cutter finger.

Abstract: The invention relates to a cutter finger for cutter bar mowers comprising a lower portion bolted at the end to the cutter bar and including a forwardly projecting cutter finger tip from which the upper portion of said finger extends to the rear thus forming the cutter blade slit and constituting together with said lower portion the counter edges for the mower knife wherein said upper portion of said finger is extended to, and supported at, and if necessary bolted at said cutter bar.

Abstract: The invention relates to a mechanism for swivelling and spring-mounting a machine sub-assembly, mounted to swivel about an axis of rotation, for example the cutting bench of a harvester thresher, which bench is supported on the movable frame of the machine by way of a lifting unit, consisting of a lifting cylinder and piston, and a spring element, a spring element of limited stroke being provided between the lifting unit and its support, and means, such as a hydraulic force transducer or the like, also being provided for the purpose of varying the spring force of the spring element.

Abstract: Control device for guiding a hydraulically operated cutter mechanism of a harvesting machine, particularly a combine harvester, at a preselected height above the ground, said cutter mechanism being connected via a connecting member and two series-connected spring elements to a stationary portion of the harvesting machine, the spring force of at least one of said spring elements being preselectable by means of an adjustment lever, while between said spring elements a switching member is arranged which depending on the position thereof acts on a switch actuating either a raise valve or the lower valve of the lifting cylinder or takes a neutral position, wherein said two spring elements connected with one of their ends to said cutter mechanism are connected via said connecting member to said adjustment lever provided on the stationary portion of said combine harvester.

Abstract: The invention relates to a grain lifter for the cutter mechanisms of harvesters having a support leg of solid flat material which carries on one of the ends thereof the stalk lifting bar and at the other end thereof is secured, by means of a holder embracing the mower finger tip, to the mower finger and to the mower finger holder, wherein said support leg is stiffened by having a non-linear cross-section within the part of the support leg which is fixed to the holder which embraces the mower finger tip.

Abstract: A grain lifter for a corn reaping machine comprising a supporting rod to be fixed on the reaper pointing in the direction of motion as well as a lifting bar upwardly and backwardly sloping from the tip of said supporting rod, which has a shape conically tapering from its fastening point on said supporting rod and consisting of a profiled portion which preferably having a U-shaped cross secton with the legs down.