Abstract: An arrangement for pressure adjustment in a veneer assembling machine has at least two conveying units which include alternatingly raisable and lowerable heating and conveying rails which are arranged parallel next to each other on transverse support members. Each rail has on the input side and the output side of the veneer assembling machine a cylinder each to which a pressure medium can be admitted. At least to the pressure cylinders at the input side arranged transversely of the travel direction of the veneer differently adjustable pressures can be admitted. The pressure cylinders are differently controllable through a valve control in dependence upon a workpiece edge scanning device.

Abstract: The apparatus includes a horizontal receiving substrate having a resilient gasket extending over the top surface in a closed figure and spaced from the edge of the substrate. A movable cover member including an inverted shallow chamber is provided with a matching resilient gasket on the underside. Vacuum means are connected to the cover. Means are provided for moving the transport cover and substrate into opposing positions so that a porous panel is clamped with between the cover and the substrate gaskets to seal off the major surface portions of the top and bottom faces of the panel while leaving a peripheral region, including the edge, exposed. A tank containing a fluid medium is arranged to move up and around the substrate so that the fluid medium in the tank contacts the surface of the peripheral region of the panel to achieve impregnation. A vacuum is drawn on the cover chamber so that the fluid medium is drawn into the peripheral regions of the panel.