Elaboration system of a mold to fund hollow pieces of double conical trunk united for its major diameter. (Machine-translation by Google Translate, not legally binding)

摘要

System for elaborating a mold to fuse hollow pieces of double troncoconic shape united by its major diameter, which is essentially characterized by comprising a single frustoconical ring, in which another ring can be introduced, cylindrical on the outside and frustoconically orchestrated that is sectioned according to their generatrices in small pieces, so that the first is introduced in the sand of the molding box, and inside it is housed the sectioned ring, which forms a mold, by extracting the primitive ring that will leave a lateral space, towards which the pieces that make up the inner ring move, so that these can be pulled down without breaking the mold made in the compacted sand. (Machine-translation by Google Translate, not legally binding)