Abstract: A Fourdrinier-type paper machine having a wet end with a headbox for storing a mixture of pulp and water, this pulp mixture being jetted onto a fabric having two side edges, this fabric forming an endless belt the upper surface of which is caused to continuously move away from the headbox, including an apparatus for continually supporting and curling the edge of the fabric so as to prevent loss of pulp mixture off the sides of the fabric and so as to prevent edge wave formation which would require substantial trimmage and waste. The apparatus includes a pair of bars having a wedge-shaped cross-section, one edge of each inserted under one side of the fabric, to cause the edge of the fabric to curl upward. Apparatus is provided to adjust the amount of curl. Several of these curl adjusting apparatuses are placed along the length of the bars so that the amount of curl can be different at different points along the bars.