PAPER-MACHINE.
The paper-machine may be considered in three parts: The wet end where the paper is formed and pressed, the middle, where it is dried, and the dry end, where it is calendered, slit and wound.
There are two distinct types of wet ends—the Fourdrinier and the cylinder. Both are mechanical reproductions in continuous process of the steps taken in the ancient hand methods, a brief consideration of which impresses clearly on one’s mind the rationale of the machine.