Page:Popular Science Monthly Volume 56.djvu/213

  (printing on both sides of the paper). Capacity 96,000 4-, 6-, or 8-page papers per hour; down to 24,000 24-page papers per hour. A, paper rolls (Webb's), sometimes five miles long; B, printing cylinders. each one carrying sixteen plates (pages); C, blanket or impression cylinders; D, inking motion (fountain and inking rollers); F; folding mechanism or formers (four of these); G, deliveries (four of these); H, controlling lever; I, bar slitting, pasting, collating, and collecting devices (between press and folders).