Abstract: Drainage foils are described in two parts, a first part including the drainage surface and means for mounting the foil on a support, and the second part including the land surface and the leading edge. The second part is fitted with wear-resistant material, and is removably fitted to the first part, so that the two parts can be interchanged to facilitate changing foiling angles and land surfaces in a given installation.

Abstract: A headbox of the pressure nozzle type has a slurry distributor providing a plurality of pairs of separated slurry passages arrayed in the cross-machine direction. The passages of each pair open at their input ends to a manifold located at one side of the distributor. Within the distributor each passage turns at a sharp angle and all the passages are aligned in the machine direction at their output ends. A nozzle structure of a turbulence-generating type is shown coupled to the distributor.

Abstract: A Fourdrinier steam shower positioned over the wire includes a steam distributor pipe extending across the path of motion of the machine wire and fed with pressurized steam. This steam pipe is connected to support members in the Fourdrinier machine. Positioned around said steam pipe for the width of the machine wire is a steam distributor including legs extending downward and outward from the pipe at an angle so as to define and enclose a steam chamber open at the bottom. Steam enters the steam distributor from jets in the steam pipe and is directed through a tortuous path into the steam chamber. Water collecting in the legs of the steam distributor is discharged through drains located at the bottom of each leg.