Abstract: A marking station for defect locations and quality limits in timber includes a timber transporting device, a transporting speed changing device, and an indicating station part with a laser transmitting element formed as a mirror, and laser. The laser is arranged stationary so that the laser beam extends parallel to a movement direction of the timber and impinges on the mirror. The mirror deviates the laser beam transversely to the movement direction. The laser beam indicates on the timber, in the movement direction, a first separating plane before a defect location and a second separating plane behind the defect location. The laser beam also indicates quality limits. Indicating positions of the laser transmitting element are transmitted to a computer.

Abstract: A marking station for defect locations and quality limits in timber comprises a transporting device arranged to transport a timber in a movement direction through the marking station, a device for changing a transporting speed of the timber in the marking station, an indicating station part provided with a laser transmitting element and operative for indicating on the timber with a laser beam a first separating plane in the movement direction before a defect location and a second separating plane in the movement direction behind the defect location as well as for indicating quality limits, the laser transmitting element being movable by an operator along a guiding means parallel to the movement direction relative to the timber to indicating positions corresponding to the separating planes and the quality limits, a computer receiving the indicating positions of the laser transmitting element in the movement direction, the laser transmitting element being formed as a first mirror, a laser producing the laser be

Abstract: A method of correcting irregularities in the build-up of a mat during the manufacture of particleboard in which a plurality of individual measurements are taken substantially transverse to the mat as it moves through a measuring station. The measurements take the form of contactless measurements of the distance between a predeterminable measuring plane and the surface profile of the mat. The measured values that are obtained are further processed as representative values of weight per unit area for the positions at which the measurements are taken. The apparatus for effecting the contactless measurements is conveniently either optical apparatus or ultrasonic apparatus.

Abstract: A continuously operable rough or finishing press for the manufacture of panels such as, for example, chipboards, fiberboards and the like, which press includes two endless plate bands or belts arranged one above the other to define a material treatment path therebetween. The endless plate bands include a number of plate elements pivotally connected to each other with each plate element being provided at edges thereof with spaced recesses and projections. At least one groove is provided in a middle or center area of each of the plate elements and/or at least one groove is provided at the projections of each of the plate elements so as to minimize deformation of the plate elements and/or arching of the center portion thereof during an operation of the press.