Abstract: A suction roll for dewatering a fibrous web, having a rotatable and perforated suction roll jacket and a suction box in the interior of the suction roll. The suction box has a first suction channel that extends in the interior of the roll essentially along the axis of the suction roll. The suction box also has a second suction channel that extends in the interior of the roll along the inner surface of the suction roll jacket and is delimited by seals. The first suction channel is connected to the second suction channel via at least one connecting channel.

Abstract: Apparatus for treating a fibrous web that includes at least one supporting surface arranged to support a surface of the fibrous web, and at least one sealing device positionable adjacent a surface of the web opposite the surface of the web supported by the at least one supporting surface. The at least one sealing device includes a positionably adjustable sealing element. A distance between the positionably adjustable sealing element and the surface of the web opposite the surface supported by the at least one supporting surface is adjustable.

Abstract: A device for separating liquid and solid material from a mixture consists of an endless filter belt, beneath which is arranged a suction box connected to a vacuum device. The suction box supports the filter belt. The filter belt moves continuously while the suction box performs a reciprocating movement in the direction of the filter belt. In order to make possible the reciprocating movement of the suction box the connection of the suction box to the stationary vacuum device is embodied as a telescopic connection consisting of a stationary part connected to the vacuum device and a part connected to the suction box and slidably movable in the stationary part.

Abstract: A graphics printer including a secondary guiding system comprising a fan arrangement for generating an air flux and directing the flux to a part of a print medium that hangs freely from the graphics printer, so as to maintain the hanging part away from the graphics printer or any object supported by it, preferably, in the case of a pen plotter equipped with devices for creating a partial vacuum beneath the print medium in an active zone of the writing instrument, the air flux being at least partially produced by suction devices.

Abstract: A horizontal endless belt vacuum filter comprises an endless belt pierced, in its central part, with holes moving above the upper opening of a longitudinal vacuum and extending beneath the upper side of the conveyor belt. An endless filtering medium passes over guide rollers and is applied on the upper side of the conveyor belt, in order to receive the mass to be filtered. The vacuum box is mounted to pivot, as a whole, about a longitudinal axis offset laterally on one side of the conveyor belt. This vacuum box is borne by the inner ends of transverse bars which are articulated on horizontally aligned bearings materializing the pivot axis and which bear, at their outer ends, a manifold. This manifold is connected on the one hand to the vacuum box, via at least one connecting pipe, and on the other hand to the source of vacuum, by at least one dismountable coupling member.