Abstract: A device for grasping and transporting objects exhibiting at least one pair of flexible pads for grasping an object, said pads mounted facing one another on a common support which is movable relative to the object to be grasped. The pads are inflatable toward one another in such a manner as to maintain an interval between themselves in their non-inflated state slightly greater than the distance separating the two opposing faces of the object or of a relief part of the object, and to clamp the faces of the object between themselves when inflated.

Abstract: The blow nozzle for use notably in foundry works in the so-called hot-box process for manufacturing sand molds and cores comprises a central barrel or tube on which a pair of tubular sleeves adapted to slide in relation to each other are fitted. These sleeves comprise diametrally opposite elongated notches and are indexed and secured to the filling tray of the hot box by means of a tip holder on which a plastic tip is resiliently fitted.

Abstract: A tip for a pipe of the type used in foundries for the fabrication of molds and sand cores by sand blasting in an appropriate foundry installation is made of plastic material and has its exterior portion in the form of an essentially cylindrical part on the side connected to the blast pipe and of a coupling cone in one of the filling holes of the core molds on the other side of his pipe. It is distinguished by the fact that this coupling cone is connected to the essentially cylindrical external portion by an elastically supported essentially circular shoulder on the upper wall of the core mold, thus achieving a tight fit by exerting a horizontal thrust on the core mold. Application to mass production of sand cores by blasting, particularly by means of rigid metal blast pipes, is attained through this invention.