Stock inlet system for a paper making machine including converging settling ducts

Claim 1

In a stock inlet system for a paper making machine; a substantially horizontal stock inlet chamber extending substantially the full width of the machine, a substantially horizontal discharge chamber also extending substantially the full width of the machine and spaced in the horizontal direction from said stock inlet chamber and in the direction of stock flow, said discharge chamber comprising a slit-like discharge nozzle on the side thereof opposite said stock inlet chamber, stock conveying means for conveying stock from said inlet chamber to said discharge chamber including a plurality of pipes forming a multipipe manifold connected at the upstream end to said stock inlet chamber and leading therefrom toward said discharge chamber, means forming a mixing chamber extending substantially the full width of the machine and connected on the upstream side to the downstream end of said multipipe manifold, means forming ducts of constant cross-sectional shape arranged in laterally and vertically distributed relation, said ducts being substantially parallel when viewed from above and being connected at the upstream ends to the downstream side of said mixing chamber, the downstream ends of said ducts being connected to said discharge chamber, the upstream ends of said ducts beind distributed over the width and height of said mixing chamber, said ducts including at least a portion immediately upstream of said discharge chamber converging with one another in the vertical direction toward said discharge chamber, the downstream ends of said ducts being distributed along the width of said discharge chamber and confined within the height of said discharge chamber.