Patent GB-190213123-A (GB)
Title: Improvements in or relating to Printing Presses.
Inventor: MORGAN HENRY WARD
Filed: 1902-06-09
Granted: 1903-06-09
Abstract: 13,123. Morgan, H. W. June 9. Rotary machines; feeding sheets; inking - apparatus; printing on boards. -Relates more particularly to multi - colour machines for printing on boards for boxes &c. The boards are fed from the bottom of the pile and carried over a bed on the frame 1 and under the printing-cylinders A, B, by cross-bars on endless chains running in recesses in the bed. The pile is held in position on the bed by side plates 9, adjustable transversely on the front fence 10 by screws 19. The fence 10 is adjustable vertically, by screws 11, on brackets 12, and is fixed in position by screws 17. The brackets 12 are arranged to slide to and from the cylinder B, and are operated by means of racks 13 thereon engaging pinions on the shaft 15. The fence carries a brush e for dusting the surface of the boards as they pass under it. The shafts 21, 22 of the printing-cylinders are journalled in frames 23, movable in guides 25 fixed on the frame 1, so that the cylinders may be adjusted towards and from the bed for different thicknesses of board &c. to be printed. To the frames 23 are attached depending rods 29 carrying cross-plates 28 engaging screws 26 journalled in lugs 27 on the framing. The screws 26 on opposite sides of the machine are turned simultaneously to adjust the position of the cylinders, by bevel gearing from shafts 34 having handwheels 35. The plates 28 are held against the shoulders 30 on the rods 29, by rubber blocks or springs 31, secured by nuts 32, so that the cylinders may yield upwardly. The shafts 21, 22 are driven by bevel gearing from vertical shafts, the bevel gears on these shafts being rotated with them, but movable along them with the frames 23. Impression rollers, projecting through the bed beneath the cylinders A, B, are geared by bevel gearing to the vertical shafts. The impression cylinders are in bearings adjustable vertically by screws. Sprocketwheels on the shaft of one of the impression cylinders drive the feed-chains. The cylinders A, B are grooved longitudinally to receive clamping-dogs 53, Fig. 7, for locking the printing-plates, and these dogs are operated by screws 54. In order that the printing-plates may be fixed on the cylinders so as to print in proper position on the boards, a scale is provided on the cylinders, and means for adjusting the cylinders angularly on their shafts. On the bed are marked longitudinal index lines, and corresponding lines running round the cylinders. On the cylinder are also longitudinal lines, numbered, the zero line reg. stering with the transverse feed bars on the chains. The means for adjusting either cylinder on its shaft, Fig. 7, comprises a disc 59 fixed on the shaft 22, and discs 62, 63 for clamping a locking-pin to the cylinder. The locking-pin is carried by the discs 62, 63, and engages a hole in the disc 59, from which it may be withdrawn by rotating it, a cross-pin on it engaging a stationary cam. The discs 62, 63 are spread apart, to clamp them against a flange 58 and a flange ring 64, by a screw 67. The flange 64 is removably fixed on the cylinder end by screws 65. Between the cylinders are transverse screws 77, carrying blocks having curved spring fingers to hold the boards firmly down on the bed. The screws 77 are in bearings 80 adjustable vertically by screws 81. The plates are inked by rollers 94 in contact with distributing-drums 91 in the frames 23. On the drum 91 is a distributerroller, and on this a roller supplied by a vibrating roller from a roller in the fountain 82. The roller 83 is driven by ratchet gear operated by rods moved by cams on the shafts 21, 22. The pivoted frames carrying the vibrating rollers are adjustable by screws in relation to their operating-arms, which engage cams on the shafts 21, 22. The drums 91 are driven by gearing from the shafts 21, 22. The distributing-roller is moved longitudinally in one direction by a spring, and in the other direction by an arm operated by a cam. The distributing - rollers and the rollers 94 are movable from each other and from the parts they engage, to prevent injury to them when the machine is at rest, or to suspend the inking operation. Their bearings are movable, and are connected by links 116, 117 to arms 115 on shafts 114. The shafts 114 may be rocked by handles 119 having shoulders engaging the arms 115.