Abstract: The present invention relates to equipment for the injection molding of spectacles bars of plastic material and for the introduction in said bars of metal stems or cores. In said equipment, the metal core--onto an end of which is previously welded the respective metal hinge--is axially inserted into the mold already filled with plastic material, wherein it is caused to slide along a grooved guide, into which it is held by means apt to be removed as the core moves forward.

Abstract: A drilling or milling machine has a suction chamber surrounding an axially moveable tool, the chamber being axially moveable relative to the tool and spring biased for abutment against a working surface during machining, after the tool has been fed forwardly in a rapid first phase, then slowly just prior to and during machining. The chamber is composed of two half-shells secured onto a mount on the tool body by a locking ring, and which can be separated by removal of the ring and radial outward movement to provide access to the tool without a need to raise the tool body. The abutment-surface of the chamber may be rigid for laterally-stationary tools, or formed of a ring of flexible bristles for laterally moving tools, e.g. for routing printed circuits. Several compressed-fluid delivery nozzles can be provided in the suction chamber to improve the removal of dust and chippings.