Abstract: A device to protect a work tool of an agricultural machine, especially a device to protect a work tool of a soil cultivator against overload when hitting an obstacle. The device includes a swinging mounting arranged in connection between a load-bearing frame of the machine and a work tool. The work tool is attached to a tube in a cavity of which there is a shaft fixed in a load-bearing frame and, at the edges of the cavity, at least two resilient sealing rings are arranged in an anti-slip manner, and between the rings, inside the cavity of the tube, oil fill is arranged.

Abstract: A device for metering of seed grain, in particular a device (19) for metering of seed grain (2) arranged on a sowing machine, comprising a carrying means (4) and a tube (3) for the outlet of seed grain (2) towards the sowing area, where the carrying means (4) is specifically made to be with negative air-pressure or positive air pressure, which comprises at least one tube (1) with pressurised air for directing seed grain (2) from the carrying means (4) into the tube (3) for the outlet of seed grain (2), and a tube (1) with pressurised air is adjacent to the carrying means (4) and its axis (5) forms a tangent (13) to the carrying means (4) an angle of ?=±30°, and the tube (3) for the outlet of seed grain (2) is adjacent to the carrying means (4), wherein its axis (6) forms a tangent (13) to the carrying means (4) an angle of Y=±30°.

Abstract: A device for folding the working parts of agricultural machinery, in particular a device for folding the working parts of an agricultural machine consisting of at least one stationary part (1) and at least one, stored in the stationary part (1), swiveling folding part (2), where the stationary part (1) and the folding part (2) are connected by at least one swivel connection (3) stored in their outer edges, which contains, in the stationary part (1) stored a linear drive device (5) pivotally connected to a rod (4) which is pivotally connected to the folding part (2), where the linear drive device (5) is located below the frame (12) of the stationary part (1).

Abstract: A device for folding the working parts of agricultural machinery, in particular a device for folding the working parts of an agricultural machine consisting of at least one stationary part (1) and at least one, stored in the stationary part (1), swiveling folding part (2), where the stationary part (1) and the folding part (2) are connected by at least one swivel connection (3) stored in their outer edges, which contains, in the stationary part (1) stored a linear drive device (5) pivotally connected to a rod (4) which is pivotally connected to the folding part (2), where the linear drive device (5) is located below the frame (12) of the stationary part (1).