Abstract: During the transfer into the weighing unit (K), the bottle (F) is held in the compartment (S1) of the transfer container (C), preferably by suction. An elevating comb (4) which receives the bottle extracted from the micro-feeder and which with a subsequent lowering movement deposits it on the underlying grid-shaped platform (8) of the balance (9) operates in the weighing unit. This platform is provided, for each transfer container (C), with a shallow recess (10), ideally in the form of a horizontal downward-converging truncated cone, in which the bottle centers itself under the effect of gravity, moving away from the walls of the container and from the fixed lateral guides in order not to distort the action of the balance.

Abstract: The apparatus for dosing and dispensing a predetermined volume of powdered material into containers sequentially moving the one after the other along a rectilinear path, comprises two rotary doser-dispenser units presenting a plurality of open-ended radial chambers which, upon rotation of the doser-dispenser units around a common rotational axis are sequentially inserted into the powdered material contained into a tank, suction being applied so that the chambers are filled with the powdered material, and thereafter are sequentially brought the one after the other into axial alignment with the receiving open end of the containers, pneumatic pressure being applied to discharge the powdered material from each chamber into the respectively aligned container. The common rotational axis of the two rotary doser-dispenser units is parallel to the rectilinear path along which the containers move.

Abstract: An apparatus for the dosing of finely powdered material employs a volumetric chamber adapted to receive an amount predetermined by volume of the powdered material, and presenting a filtering screen through which pneumatic suction is applied for the taking up and compacting of the powdered material, and pneumatic pressure is applied for the discharge of the said powdered material.The said filtering screen is made of a fabric of mono-filament synthetic material, and preferably of mono-filaments of a polytetrafluoroethylene resin, said mono-filaments constituting both the warp and the weft of the fabric.