Abstract: An agricultural machine (10) comprising a bearing frame (11) and a plurality of fertilizer distributor devices (20), comprising at least a fertilizer distributor (21) associated to a disc (22), where the distributor devices (20) are supported by a mounting (25) associated to the bearing frame (11) by a resilient organ (27), the resilient organ (27) being a bending bar.

Abstract: A single seed dispenser for a precision automatic sower includes a cover for seeds to be distributed joined to a body containing a cavity in communication with an aspirator of the seeds via a conduit inserted in a hole on the body, a distribution disc with holes contained in a compartment delimited by the body and by the cover; a driving disc joined through pins to the distribution disc, both discs being put into rotation by a shaft actuated by an actuator for commanding rotation of the discs; and a selector device for the seeds pivoted on the edge of the body. The selector device includes a plate which presents at least two toothed portions, having teeth of different sizes and a curved sector mounted against the surface of the distribution disc opposite to the plate and has protrusions having inclined surface facing the distribution disc.

Abstract: A distributor device of fertilizer substances for a seeder machine includes a storing tank of a fertilizer substance, a plurality of distribution conduits connected to the storing tank, at least one source of high-velocity air connected to the distribution conduits for distributing, in use, the fertilizer substance. The device also includes: at least a connecting element, having at least two infeeds and at least one outfeed, the connecting element being connected to at least two of the distribution conduits so as to convey, in use, the fertilizer substance coming from at least the two distribution conduits to the outfeed.

Abstract: A group for cleaning and making a furrow in a ground, comprising: —a frame suitable to be connected to a driving unit; —a rotary grooving disc provided with grooves; wherein the grooving disc is articulated to the frame in a mobile fashion perpendicularly to the ground with respect to the frame by means of a resilient articulated group provided with mutually parallel articulation axes, and wherein the resilient articulated group comprises at least one plurality of arms articulated with respect to mutually parallel articulation axes, among which there is at least one resiliently flexibly yieldable arm.

Abstract: An agricultural machine (10) comprising a bearing frame (11) and a plurality of fertilizer distributor devices (20), comprising at least a fertilizer distributor (21) associated to a disc (22), where the distributor devices (20) are supported by a mounting (25) associated to the bearing frame (11) by means of a resilient organ (27), the resilient organ (27) being a bending bar.

Abstract: A group for cleaning and making a furrow in a ground, comprising: a frame suitable to be connected to a driving unit; a rotary grooving disc (41) provided with grooves; wherein the grooving disc (41) is articulated to the frame in a mobile fashion perpendicularly to the ground with respect to the frame by means of a resilient articulated group (44) provided with mutually parallel articulation axes and wherein the grooving disc (41) is pivotingly associated to the resilient articulation group about an oscilllation axis (422) perpendicular to the articulation axes of the resilient group.

Abstract: A distributor device of fertilizer substances for a seeder machine comprises storing means (20) of a fertilizer substance, a plurality of distribution conduits (60) connected to the storing means (20), at least a source of high-velocity air (30) connected to the distribution conduits (60) for distributing, in use, the fertilizer substance. The device further comprises: at least a connecting element (70), comprising at least two infeeds (72) and at least one outfeed (76), the connecting element (70) being connected to at least two of the distribution conduits (60) so as to convey, in use, the fertilizer substance coming from at least the two distribution conduits (60) to the at least an outfeed (76).

Abstract: The invention relates to a single seed dispenser (10) for a precision automatic sower comprising a cover (11) for seeds to be distributed joined to a body (12) containing a cavity (24) in communication with an aspirator of the seeds via a conduit (22) inserted in a hole (23) realised on the body (12), a distribution disc (13) with holes (38, 54) contained in a compartment delimited by said body (12) and by said cover (11); a driving disc (31) joined through pins (53) to the distribution disc (13), both discs being put into rotation by means of a shaft (29) actuated by an actuator for commanding rotation of the discs (13, 31); and a selector device (14) for the seeds pivoted on the edge of the body (12), where the selector device (14) comprises a plate (142) which presents, on a side facing the centre of the distribution disc (13), at least two toothed portions (143, 144), having teeth of different sizes and a curved sector (59) mounted against the surface of the distribution disc (13) opposite to the plate (1