Abstract: A feeder for the gripper head of wrapping machines for small- and medium-size products, comprising: a disk, which substantially lies horizontally and rotates about a vertical axis; recesses for receiving a respective product, which are distributed all around the disk, are spoon-shaped and have a slot which is open towards the outside of the disk and can be crossed substantially along a plane that passes through the vertical axis; an extractor which cooperates, in a transfer station which corresponds to one of said recesses and to a gripper, with a corresponding complementary element and with a device for dispensing a piece of material in sheet form and is suitable to intersect and pass beyond the recess with an active stroke in the vertical plane, passing through the slot in an upward and outward direction so that the product and the material in sheet form are secured against the complementary element and so that by means of the complementary element the product and the material are inserted in the gripper, w

Abstract: Non-deformable frame for spectacles, and in particular spectacles for children so obtained, comprising a connection element between the lens surround, consisting of two bodies joined in a non rigid way, one of which is inserted coaxially to the other, and at least one torsion-bar preferably in steel, having the ends anchored to both lens surrounds, and to which the nose pads are associated to the respective lens surround providing for the interposition of a helical spring,

Abstract: A silk screen printing process onto a support with a reduced ink absorption including, after each silk screen printing phase onto a support to be submitted to silk screen printing, at least a first heating phase of the support and at least a second forced cooling phase of said support, the second phase being immediately successive to the first phase. The process is carried out by a plant (1) including, after each printing station (2), a heating station (5) acting onto the silk-screened support (14) and a cooling station (6) active onto the same support (14) to be submitted to silk screen printing.

Abstract: A knife drive for spreading and thrusting ink through printing matrices of silk-screen printing machines includes first drive members adapted to impart on knives parallel reciprocating movements to a related matrix and comprising at least one plate element reciprocable parallel to the matrix itself, a through-going slot formed in the plate element and parallel to the matrix, and a pin through-penetrating slidingly and rotatably the through-going slot and engaging the knives, and second drive members adapted to impart on the knives up and down movements with respect to the matrix and comprising a guide rigid with the plate element, extending in a transverse plane to the pin and along a transverse direction to the through-going slot, and a small lever attached transversely to the pin and engaging slidingly with the guide.