Patent GB-190519731-A (GB)
Title: Improvements in Printing Presses.
Inventor: MILLER DAVID RESTON
Filed: 1905-09-29
Granted: 1906-09-27
Abstract: 19,731. Miller, D. R. Sept. 29. Printing in several colours; printing- rollers.-Relates to multi-colour rotary printing- machines, the object being to provide a machine more especially for printing on metal plates &c. by a substantially continuous operation. (1) The machine comprises a sheetcarrying cylinder. 3, Fig. 2, and a printing-cylinder 7, divided into corresponding sections in prime numerical relation, and a transfer cylinder 4 arranged between the cylinders 3, 7 and divided into sections 86 corresponding in size and number to the sections 88 of the cylinder 7. The grippers 60, Figs. 2 and 3, are carried on spring-tensioned rock-shafts 54, and are opened by means of two cams 69, 70 on slides 68, which are raised and lowered at the proper intervals by means of pins, cam - grooves 72, and toothed gearing 69<1>, 64. The cam 70 opens the grippers for discharge of the plate upon a conveyer 74. The cam 69 opens the grippers to receive a plate from a pivoted feed-table 16, which swings down by gravity, and is raised by means of arms on a camactuated rock-shaft 28. The plate is positioned on the table 16 against an adjustable side guide yielding springs 52 on pushers 51, and front stops 21, Fig. 10. The stops 21 are on a bar 22 held down by means of springs 24 and raised, when the table drops, by contact of stops 25 with a part 26 of the framing. The pushers 51 are connected with a slide 47 operated from a cam - actuated spring-retracted sleeve 36 on the rock-shaft 28. The free edges of the plates on the cylinder 3 may be retained by guide-bars 75, or otherwise. The blankets 86 of the cylinder 4 are of rubber or other elastic material, and are wound on shafts 83, for taking up slackness or wear. The type sections 88, Figs. 2 and 16, of the cylinder 7 are reversibly mounted on shafts 89 and retained by pins 92. Each section 88 has two working surfaces, which may be cut to receive equal or different thicknesses of type plate, as electrotype and aluminium. (2) The inking-mechanism is shown in Figs. 17, 20, 22, and 25. Ink-supplying rollers 108, preferably two for each type section, are mounted in bearing brackets 105, free to turn, but held against longitudinal movement, in boxes 100 adjustable in segmental slots 96 in the'framing. The rollers 108 are spring. tensioned towards the type cylinder, and are brought into and out of co-operation with their corresponding type sections by means of disks 111, 112, 113, 114, 115 on the roller shafts and cam-grooves 95 in rings 94 on the type cylinder. The ink fountains 119 and distributing-rollers are carried by a frame 117 adjustable in guide-ways 116 by means of a hand-shaft and pinion 122 and a fixed rack 120. The distributing- rollers are carried by converging brackets, and are driven from a shaft 132, which, in the working position of the frame 117, is driven from the type cylinder through gearing 130, 131. The distributing-roller comprises a central driven roller 159, lateral rollers 168, 171 driven from the roller 159, and contact-driven rollers 160 having endways reciprocating movement. The fountain rollers 175 are provided at each end with pawl-and-ratchet mechanism, the one for actuation by a handle 183, and the other for automatic actuation. In the latter case, each pawl-disk 201, Fig. 25, has a pin- and-slot connexion 204 with an adjustable arm 196 on a rod 195, which is reciprocated by connexion with a pivoted beam 192 connectible with a wristpin 190 on a rod 186 reciprocated from an eccentric 184 on the type-cylinder shaft 6. Means are provided for adjusting the travel of the automaticallyactuated pawls 200, or for rendering them inoperative, and comprises cams 205 for engagement with pins on the pawls, and set by means of links 207 notched for adjustment over pins 210. The vibrating rollers 214 are carried on shafts 211 rocked by connexions with a bar 217 reciprocated through a sliding frictional connexion with an arm on the rock-shaft 193 of the beam 192.