Abstract: A press for molding large sheets around a forming surface which includes an elastic press pad, a first frame member on the side of the press pad away from the working surface thereof, a pressure cell formed between the press pad and the first frame member, the pressure cell containing an elastic diaphragm in contact with the press pad, a second frame member formed in a generally L-shaped configuration to encompass and hold an annular bead of the elastic diaphragm, mounting bolts for adjusting the positioning of the second frame member with respect to the first frame member, and channels in the first frame member for supplying a pressure medium to a pressure zone between the first and second frame members and the elastic diaphragm.

Abstract: The present invention relates to a device in direct current arc furnaces with a furnace vessel and at least one arcing electrode (cathode) and at least one contact electrode. The number of cathodes and/or contact electrodes (for example hearth connections - anodes) may be one, two or more.

Abstract: A press for hydrostatic extrusion of tubes includes a high pressure cylinder axially displaceable in a press stand with a die insertable into the cylinder and a pressure generating punch insertable into the cylinder to generate the pressure for extrusion. A mandrel is carried by a rod which passes through the pressure generating punch. Seals are provided between the mandrel and the pressure generating punch and between the pressure generating punch and the pressure cylinder. These seals are so located that during the actual extrusion they are arranged in the same transverse plane.