Abstract: A dosing unit, for the controlled delivery of a solid material, including a silo, for containing the material to be delivered, having on the bottom a discharge mouth, said discharge mouth being circular, at least one extraction auger arranged inside said silo and operable in rotation around a vertical axis, at least one scraper member, located inside said silo and associated with said discharge mouth operable in rotation around said vertical axis, first actuation means of the extraction auger and second actuation means of the scraper member, at least one shutter component positioned below the discharge mouth, and moving means operatively connected to the shutter component to move it with respect to the discharge mouth.

Abstract: The dyeing apparatus for carrying out laboratory tests comprises a dyeing chamber which can be sealingly coupled to at least one portion of the fabric to be dyed, means being additionally provided for displacing the dyeing liquid, adapted to carry out a sequence of alternate passages of the dyeing liquid through said fabric to be dyed.

Abstract: A plant for the automatic weighing of dyes in powder form controlled by a computer for the preparation of mixtures for the dyeing industry comprising a plurality of hoppers containing the dyes, said hoppers being placed one beside the other, each being provided with pipe systems for the introduction of the dyes into respective loading hoppers provided with a lower conveyor chute for the withdrawal and introduction of the dye from the hoppers into a mixing and weighing container. When the conveyor chute is set into rotation, it withdraws the dye from the hopper and deposits it on the plate of the scale. The rotational speed of the chute is variable and it gradually decreases as the value weighed by the scale approaches the required weight value. The quantity of dye to be withdrawn and the withdrawing sequences are recorded and memorized in a computer which controls the operation of the plant.