Representative Papermaking Machines Fourdrinier machines Fourdrinier machines(Figure 3. 1)pump furnish from a headbox directly onto a moving wire screen through which the water is continuously drained. Fourdrinier machines may have a second headbox(Figure 3.2)situated downstream of the first headbox to add further quantities of furnish onto the partially dewatered initial lay-downRepresentative Papermaking Machines Fourdrinier Machines Fourdrinier machines (Figure 3.1) pump furnish from a headbox directly onto a moving wire screen through which the water is continuously drained. Fourdrinier machines may have a second headbox (Figure 3.2)situated downstream of the first headbox to add further quantities of furnish onto the partially dewatered initial lay-down