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Application filed by Tampella Papertech OyfiledCriticalTampella Papertech Oy
Priority to FI911771ApriorityCriticalpatent/FI90674C/en
Publication of FI911771A0publicationCriticalpatent/FI911771A0/en
Publication of FI911771ApublicationCriticalpatent/FI911771A/en
Application grantedgrantedCritical
Publication of FI90674BpublicationCriticalpatent/FI90674B/en
Publication of FI90674CpublicationCriticalpatent/FI90674C/en
The invention concerns a design of a headbox intended for use in a paper or cardboard machine. In the headbox according to this invention the design is made easier by making a pressurized bottom chamber 5 beneath the bottom plate 4 of the headbox, which supports it and whose cavity 2 consists essentially of parts with a cylindrical or spherical surface. <IMAGE>