Abstract: A pulper for the disintegration of cellulose pulp is disclosed in which a vessel containing bales of waste paper or pulp is of a spiral shape with a flat bottom, and a rotor is located in the center of the spiral. Impurities and foreign bodies are driven towards an Archimedes screw located at the outlet from the spiral, which removes them to the exterior. In this final pass this is washed by spray nozzles to recover the carried-over pulp.

Abstract: The device consists of a scraper consisting of a unit of two parallel blades (1) and (2) that diagonally incide on the surface of the roller or cylinder.The separation space forms a forced water circulation chamber with inlets (7) and outlets (8) that cool and lubricate the blades and clean away impurities.

Abstract: An apparatus for verification of corrected surfaces or surfaces being corrected includes a carriage displaceable on an horizontal alignment and displacement guide supported on two vertical supports, a proximity gage mounted on an extendable arm of the carriage, and a collimated laser-transmitter mounted on one of the two supports and cooperating with a multiple sensor screen mounted on the carriage. The proximity gage measures the distance between the proximity forming part thereof and a correct surface, and the laser-transmitter measures the distance from the one support to the carriage. A control system processes the measuring data and generates a graphic representation of the processed data.

Abstract: The present invention is to be used in drying installations. The invention consists of combining the heat of the copper cylinders on which the paper slides with pressing rollers with a diameter larger than the conventional rollers used to transport the belt which guides the sheet of paper. The invention has been foreseen to increase the number of pressure points by installing other pressing rollers at the free spaces, accelerating the drying process.