The present invention relates to a spreader (1) for spreading granular or micro-granular material on the ground under gravity comprising an elongated hollow member (10) extending along an essentially vertical axis X and defining an inner cavity through which said material to be spread on the ground can flow, said hollow member (10) being adapted to be associated with a delivery conduit (50) of a container for storing said granular or micro-granular material. In particular, at least an end portion (10A) of said hollow member (10) has a substantially circular or elliptical cross section and it is provided with a plurality of protrusions (14) projecting towards the inner cavity and being adapted to even the flow of the material before exiting said inner cavity.

A blower/atomizer portable device comprises a propulsion assembly or power unit (2), a blowing assembly (3), a swingable dispenser (4) and an adjusting assembly (5) acting in said swingable dispenser (4) for selectively introducing a predetermined amount of substance to be distributed/atomized; the blower/atomizer further comprises a pumping unit (13) operated by the power unit (2) and adapted to cause movement of a substance to be distributed/atomized and contactless transmission means acting between the propulsion assembly (2), the blowing assembly (3) and the pumping unit (13), said contactless transmission means being adapted to actuate at least the pumping unit (13) while maintaining a pneumatic/hydraulic separation relative to the power unit (2) and/or the blowing assembly (3).

A blower/atomizer portable device comprises a propulsion assembly (2), a blowing assembly (3) connected to the propulsion assembly (2), a swingable dispenser (4) and an adjusting assembly (5) acting in the swingable dispenser (4) for selectively introducing a predetermined amount of substance to be distributed/atomized into said flow; the blower/atomizer further comprises synchronised actuating means (10) simultaneously acting on the swingable dispenser (4) so as to vary a flowrate thereof and on the propulsion assembly (2) so as to vary delivery of mechanical power.

Methods and apparatus are provided for dispensing chemical material, and in particular, granular, agricultural material, from a moving device driven over terrain to be treated with the material. A metering system for dispersing the material includes on apertured metering disk positioned above a rotatable impeller. The apertured disk meters material from a product container, by gravity feed, onto the impeller below at a rate proportional to the linear speed at which the apparatus is driven to dispense material at a uniform density over the terrain. The metering disk is a component of a product container which is removably mounted to the device. The impeller rotates at a constant speed to disperse the deposited material at a uniform distance from the apparatus, and the position on which the material is deposited on the impeller is adjustable. A clutch permits the user to discontinue dispensing material from the device at the selection of the user, and automatically discontinues dispensing of material when the apparatus is driven in a reverse direction.

Aa apparatus for distributing particulate material which includes an elongated tubular support (1) for the material (g), said support being provided with discharge nozzles (3) and being suspended from a fixed structure in such a way that the tubular support is reciprocable longitudinally to advance the material and is also angularly movable about its longitudinal axis to modify the angular orientation of the discharge nozzles.

The invention relates to a manual applicator capable of dispensing accurate doses of agricultural chemical.

In one embodiment a cylindrical measuring chamber has an inlet in its upper regions and an outlet in its lower regions, when the chamber is in its orientation for use. First and second valve closure members (29 and 31) for the outlet and inlet respectively are mounted on a common actuating rod (28), axially displaceable within the chamber whereby, when the first closure member (29) is engaged with the outlet the second closure member (31) is displaced from the inlet and the chamber charges and when the second closure member (31) closes the inlet the first closure member (29) is displaced from the outlet and the chamber discharges.