Abstract: In the manufacture of eyeglass bows, a metal core (2) is placed in a mold (1) and is gripped at one end (3) before the mold (1) is filled with plastic material.To ensure that the metal core (2) can be held in position in the mold (1) as the plastic charge enters, the metal core (2) at that end thereof which is opposite to its gripped end (3) is joined to a tensile element (6), which extends out of the mold. The joint between the tensile element (6) and the metal core (2) forms a rated breaking point having a limited ultimate tensile strength. Before the mold (1) has been completely filled with plastic charge, a tensile stress in excess of the ultimate tensile strength of the joint is applied to the latter by the tensile element (6) so that the tensile element will be severed and pulled out of the mold (1).

Abstract: A rolling mill for milling cereals or the like, comprises three roll units, each including two rolls and bearings mounting the rolls for rotation about parallel axes, a housing provided with three outwardly open receiving portions for frontal insertion of the roll units and for supporting the latter after insertion. The receiving portions are vertically spaced from each other with two receiving portions having open ends at one side of the housing and a third of the receiving portions, located between the other two, having an open end at the opposite side of the housing. The rolling mill includes further treating devices in the housing between successive roll units and such treating devices may be constituted by swinging sieves.