Air guide box for stabilizing the path of a paper web

An air guide box for stabilizing a running web, the air guide box configured to be placed within an entrance gore defined by a web and a guiding means for guiding the web, said air guide box comprising:

• first wall for guiding said web, said first wall being positioned along a running path of said web, said first wall and said web defining a gap, said web carrying an air boundary layer in said gap;
• second wall facing the guiding means and being opposite to said first wall;
• a plurality of end walls extending from said first wall to said second wall;
• a plurality of side walls connected to said first wall, said second wall, and said end walls, with said first wall, said second wall, said end walls, and said side walls defining an interior region of said air guide box;
• a plurality of bulkheads, each said bulkhead defined by said first wall, said second wall, and one of said end walls, said bulkheads defining a main chamber therebetween in said interior region, each bulkhead defining an endwise marginal area;
• a plurality of air suction means located in each of said endwise marginal areas for sucking air from said air boundary layer, said first wall having an entrance opening for a first end of each said air suction means;
• a plurality of discharge means located at a second end of each said air suction means for venting sucked air away from said air boundary layer;
• and
• a plurality of drive jet nozzles, each said nozzle coupled to a respective air suction means and extending into said air suction means directed toward said discharge means such that air flow from said air boundary layer to said discharge means increases when said drive jet nozzle blows air into said air suction means.