Abstract: An apparatus is described for reworking a steel edge of a ski (1), comprising at least one grinding apparatus (16) made of a cup-like grinding wheel (18) which is driven by a motor (17) and comprises a rotational axis extending transversally to the direction of feed (10), a bearing block (15) arranged on a feed carriage (9) which forms an oscillating axis (b) for the grinding device (16) extending transversally to the direction of feed (10) and perpendicular to the rotational axis of the grinding wheel (18), a guide means (8) for the feed carriage (9) which is held in a transverse carriage (6) movable transversally to the direction of feed and is rotatable about an axis (a) extending in the direction of feed, and an adjusting device for the angular position of the guide means (8) of the feed carriage (9).

Abstract: The description refers to a mill saw with a saw gate (3) driven via a slider-crank drive (4), whose parallel saw blades (5), which cut in only one stroke direction, are provided with a bias, and with a feed conveyor (6) for the stock to be cut, which is driven intermittently during the cutting stroke of the saw gate (3) as a function of the cutting speed by means of at least one motor (10) separated from the slider-crank drive (4) and connected to a controlling system (12). To achieve favorable construction features, it is suggested that the controlling system (12) connected to a signal transmitter (17) for a preset position of rotation of the slider-crank drive (4) controls the motor (10) in dependence on the response of the signal transmitter (17) according to a stored control program for one conveying step adaptable to the respective stroke frequency of the slider-crank drive (4).

Abstract: The invention relates to a machine for sowing individual seed grains. The inventive machine comprises at least one hopper (14) that is open towards a vertical sowing disc (1) that consists of a stationary disc body (3) which is exposed to suction on the side facing away from the hopper (14) and has at least one guiding slot (16). The sowing disc also consists of a conveyor disc (4) that can be driven, rests on the disc body (3) on the side of the hopper (14) and has carrier slots (21) that are distributed over the circumference, extend over the radial extension area of the guiding slot (16) and, together with the guiding slot (16), form aspir.

Abstract: The description relates to a procedure for fastening a carbide tooth (1) at a saw blade (2), with a carbide tooth (1) fabricated according to the saw tooth geometry being held butt-jointed to the prepared front-side abutting surface (3) of the saw blade (2) and then being attached to the saw blade under addition of heat along the joint (10) between the saw blade (2) and the carbide tooth (1). To create favorable process conditions it is suggested that the carbide tooth (1) is welded to the saw blade (2) by means a focal spot (9) of a laser beam (7) extending over the whole joint length.

Abstract: The description relates to a procedure for fastening a carbide tooth (1) at a saw blade (2), with a carbide tooth (1) fabricated according to the saw tooth geometry being held butt-jointed to the prepared front-side abutting surface (3) of the saw blade (2) and then being attached to the saw blade under addition of heat along the joint (10) between the saw blade (2) and the carbide tooth (1). To create favorable process conditions it is suggested that the carbide tooth (1) is welded to the saw blade (2) by means a focal spot (9) of a laser beam (7) extending over the whole joint length.

Abstract: There is described an apparatus for finishing a steel edge (14) of a ski (15) by means of a pot-shaped grinding wheel (1) driven by a motor (2) with an axis of rotation extending transverse to the feed direction (8). To create advantageous constructional conditions it is proposed that the grinding wheel (1) with the motor (2) should be mounted in a frame (7) of a setting means so as to be freely rotatable about a swing axis (a) limited by a stop, which swing axis extends transverse to the feed direction (8) and vertical to the axis of rotation of the grinding wheel (1), and that for setting the grinding wheel (1) against the steel edge (14) the setting means can be swivelled in the direction of the axis of rotation of the grinding wheel (1) about a swivel axis (b) parallel to the feed direction (8) between two working positions on the one hand for the machining surface of the steel edge (14) on the side of the running surface and on the other hand for the outer machining surface of the steel edge (14).

Abstract: There is described a screen device (3) for a harvester-thresher for a test field, comprising at least one frame (9) receiving a cleaning screen (11) and an adjusting means (12) for adjusting the frame (9) pivotally mounted about a transverse axis (10) in the chassis (1), where the adjusting means (12) consists of an actuating shaft (13) parallel to the swivel axis (10), mounted in the chassis (1) and connected to a swivel drive, which actuating shaft has at least one swivel arm (14) connected with the frame (9) via a connecting rod (15).