Abstract: A process for fabricating one-piece moldings from a dry ceramic mass, in particular crockery or china such as cups, pots, cans and the like having deep handles, grips, lugs or the like as well as a molding arrangement for carrying out this process. The molding arrangement includes a divided mold matrix and a divided punch which define between them a mold cavity into which a sprayed granular dry ceramic mass is fed. By the application of isostatic pressure via the punch the ceramic mass is molded. The molding is then removed by separating the halves of the punch and mold matrix and the molding is then subjected to a kilning step.

Abstract: A method and apparatus for the manufacture of deep, conical or cylindrical ceramic hollow bodies made of a powdered or granular pressed mass by isostatic compression, and with projections, such as handles, grips or the like provided on the hollow body being pressed simultaneously with the hollow body. To facilitate introduction of the pressing mass into the press chambers provided in the press mold for both the hollow body and the projection, the pressing mass, in addition to falling freely, is introduced into the respective press chambers under the influence of a vacuum.

Abstract: Am improved press for molding ceramic material which has a base frame on which a first carrier is rigidly mounted and which fixedly supports a stationary punch. A stripper platen is slidably movably supported on said first carrier and is adapted to be reciprocated therein by third piston and cylinder means mounted in said first carrier. The stripper platen includes an annular chamber disposed around the stationary punch for receiving granular ceramic material from a hopper mounted in the base frame. A second carrier is also rigidly mounted in the base frame and supports first and second cylinder and piston means. The first cylinder and piston means serves to support a movable punch which exerts the main molding pressure on the ceramic material when the stationary and movable punch are in the molding position. The second cylinder and piston serve to move the movable punch towards and away from the stationary punch and to exert supplemental pressure on the movable punch during the molding process.

Abstract: A press mold having upper and lower jaws for pressing and molding articles of ceramic material. Each jaw supports a die, at least one of which has a molding matrix. A press ring mounted around the die having the matrix. Upper and lower contoured parts made of synthetic material or rubber are respectively mounted on the upper and lower die by adhesive. Each contoured part has a matrix. One of these matrices has an inner contoured edge which corresponds to the outer edge contour of the molding made by the press mold and having an outer contoured edge at least in the areas of the smaller diameters of the molding with respect to the areas of the largest diameter of the moldings in the direction of the surface of the molding which protrudes beyond this inner contoured edge and which has an even contour, such as a circle.

Abstract: A multiple press having a plurality of molds for forming ceramic moldings. The press includes a base frame on which a movable mounting plate is mounted. The movable mounting plate carries a plurality of mold halves. The base frame also includes a fixed mounting plate having a plurality of cylindrical bores in which a plurality of punch carriers are slidably mounted. Each punch carrier holds a mold half which mates with the confronting mold half on the movable mounting plate. The cylindrical bores being in communication with a source of a pressure medium so that a "pressure pad" is formed behind each punch carrier during the molding process.

Abstract: An improved setting and stacking arrangement for setting and stacking articles in a cross-bracing manner. The arrangement has a gripping mechanism which is movable in a transverse and longitudinal direction and rotatable about a vertical axis and also can be lowered and lifted in a vertical direction. The gripping mechanism includes at least one pair of gripper arms having rotary gripper plates at their free ends. The gripper arms are slidably movable on a guide rod of the gripping mechanism and one gripper plate can be rotated by a rotary drive mechanism.

Abstract: A roller including a hollow cylindrical pipe portion having an outer diameter corresponding to that of the roller and having axle stump portions which have axial cylindrical end portions. The axle stump portions being at least partially frusto-conically shaped and being connected to the pipe portion via S-shaped radially inwardly bent portions. The pipe portion and S-shaped portions being of unitary construction and the axle stump portions being welded to this unitary construction.A process for producing rollers and the like having axle stumps at both of their axial ends from hollow cylindrical pipe pieces. The process includes the steps of reducing and deforming both axial ends of the pipe piece to form frusto-conical end portions. The pipe piece has an outer diameter corresponding to that of the roller. The shaping and deformation is carried out by means of a pipe deforming machine.