Improvements in Fastening Devices for Securing Printing Plates to Supporting Cylinders in Printing Presses

10,812. Bradford, E. S. May 23. Formes, securing in machines.-Means for securing printing-plates on the cylinders of printing- machines. The plate D is fixed on the cylinder B by clamps e sliding in longitudinal grooves e in the cylinder, and operated by screws e . In the arrangement shown in Figs. 3 and 4, the screws are prevented from moving endways by plates e , engaging the heads e' of the screws. The plates e are fixed to the cylinder by screws and slots e , e . In the arrangement shown in Figs. 5 and 7, the movement of the screws is prevented by S-shaped pieces e'‹ engaged between collars e , e on the screws, and fixed to the ends of the cylinder by screws e9.