Abstract: A method of and an arrangement for leading a web on to a desired wire in a paper machine or the like. When the web moves between two wires, it is transferred on to one wire after the wires have moved in parallel over a distance with the web therebetween making contact with both wires. The transfer takes place when the wires start to move in different directions by sucking the web on to one of the wires by a vacuum acting through said wire. For improving the detachment of the web from the other wire, the direction of travel of the wire is changed abruptly at the parting point of the wires by leading it along a suction box comprising a cover piece formed by cleats and arranged to form an angle in such a way that the point of the angle projects towards the wire. When the wire moves along the cleats of the cover piece of the suction box, its direction of travel is abruptly changed at the point line of the angle, whereby the web is detached from the other wire completely in a moment.

Abstract: A joint dewatering zone of wires for dewatering a web to be formed in a two-wire papermachine having a first wire loop and a second wire loop, includes a first forming roll which is situated inside the second wire loop and other dewatering means which are situated after the first forming roll inside the first wire loop. The other dewatering means comprises as a combination a first suction box, a second suction box with a curved guiding surface, and a roll interposed between the suction boxes.