Patent GB-190227744-A (GB)
Title: Improvements in Printing Machines, and Inking Mechanisms therefor
Inventor: NEWTON HENRY EDWARD
Filed: 1902-12-16
Granted: 1903-02-26
Abstract: 27,744. Newton, H. E., [Hoe, R.]. Dec. 16. Inking-apparatus; rotary machines.-Relates to the inking-mechanisms of planograpbic or other machines, and consists of means for driving the inking-mechanisms independently of the printing- couples, or of the impression cylinders, and of means for lifting the forme-rollers from the forme cylinders when the machine is inking-up, or when the machine is stopped, or when desired. Fig. 1 shows a colour-printing machine having a forme cylinder 3 and an impression cylinder 5 for printing one side of the web, and an impression cylinder 7 and forme cylinders 9, 11 for printing the other side of the web. In this machine the forme and impression cylinders are driven by a train of gearing from the shaft 19, and the inking-mechanisms are driven by a separate train of gearing from the same shaft. The inking- mechanism shown for each forme cylinder, comprises a duct 50, duct roller 51, and a vibrating- roller 52, which transfers ink to the first distributing-drum 53 on which are the distributing- rollers 54. From the drum 53 the ink is transferred by rollers 58 to distributing-rollers 59, and from these to the forme by the forme rollers 63, 64. The distributing-rollers 53, 59 are driven by intermediate gears 56, 62, in gear with wheels 44, 46, 48 attached, respectively, to wheels 40, 41, 43 loose on the shafts of the forme cylinders. The wheels 40, 41 are in gear with a wheel 39, which is loose on the shaft 8 of the cylinder 7 and is driven by a wheel 17 fast on the shaft 19 and also in gear with a wheel 15 on the power shaft 13. The wheel 43 is in gear with a wheel 42 loose on the shaft 6 of the cylinder 5 and driven by the wheel 39. The forme and impression cylinders are driven by wheels fast on their shafts, that on the shaft 8 being in gear with a wheel connected by a clutch to the shaft 19. By operating the clutch lever 27, the cylinders may be stopped, while the inking- mechanisms are driven, for inking-up, by the gearing described. Fig. 4 shows a means for lifting the forme rollers 63, 64 from the forme cylinders. The rollers 63, 64 are in bearings carried by blocks 68, 72 adjustably fixed on arms 70, 74 pivoted on the shafts 60 of the distributers 59. On the arms 70, 74 are pins engaging camslots 81, 82 in discs 77, 78 pivoted on the framing and having toothed segments in gear with toothed segments 87, 88 loose on the cylinder shafts. These sets of arms and segments &c. are provided at both ends of the cylinders. The segments 87, 88, &c. are provided with arms 90, 91, 92, 93 connected by rods 94, 98 so that the segments of the different forme cylinders move in unison. The segments 88 are also geared by segments 103, 104 to a transverse shaft 102 having an operating-handle 106. The segments are each provided with an operating-handle 101, 108, &c., and hooks 95, 99 are provided on the rcds 94, 98 for disengaging them. In another arrangement, the cylinders 5, 7 only are driven by a wheel clutched to the shaft 19, while the forme cylinders and inking-mechanisms are driven by the loose wheels on the shafts 6, 8, so that the cylinders 5, 7 may be stopped while the forme cylinders and inking-mechanisms are run. Fig. 8 shows another arrangement for lifting the forme-inking rollers. The forme-inking rollers 153, 154 are in bearings adjustably attached to arms 162, 168 pivoted on the shafts of the distributers 149. Pins 181, 182 on the arms 162 engage slots in the ends of arms 177, 178 on discs on the shafts 11, 12 of the forme cylinders. Beside these discs are discs 169 having similar slotted arms 171, 172 engaging pins 175, 176 on the arms 168. The discs of each pair are geared one to the other to move simultaneously in opposite directions by toothed segments 184, 186 on arms 183, 185 projecting from the discs. Pinions 188, 190 pivoted on the framing engage between the segments 184, 186. The arms 183 &c. are connected one to another by rods 193, 194 so that the lifting-mechanisms of the different forme cylinders move in unison. The shafts of the pinions 190 are provided with arms 196 connected by a transverse bar 197, so that the arms 162, 168, &c. at both sides of the machine are operated simultaneously. The discs are provided with operating-handles 198. Fig. 9 shows another form of machine having power-driven means for raising and lowering the formeinking rollers from and to the forme cylinder. As shown, the forme-inking rollers 205<1> are in two sets, carried by slides having pins 208, engaging cam-arms 209 on discs 211 having arms 212 geared by toothed segments 213, 214 to a shaft 217; On the shaft 217 is an arm 216 having a pin engaged by a hook 219 or 220 on a rod 221 pivoted to a crank-pin 222 on a wheel 223 geared to a wheel 225 preferably of half its diameter, so that a complete revolution of the wheel 225 will drive the wheel 223 through half a revolution, and operate to move the rollers 205<1> from their lowered position to the raised position, or vice versÔ. The wheel 225 is driven by a worm and worm-wheel from a shaft 229, geared by bevel gears to the driven shaft 232. The shaft 229 is mounted to swing so that its worm 228 may be disengaged from the worm-wheel after a complete revolution of the wheel 225. Its outer end is carried by a swivel bearing on a bell-crank lever 241, 242, Fig. 14, provided with a roller 244 engaging a cam disc 245 having a notch 246. When the roller engages this notch, the worm is disengaged aud the wheel 225 stopped. In order to start the wheel 225, the roller 244 is lifted out of the notch 246 by a cam-piece on a disc 247 connected by a spring rod 256 to a foot-lever under the control of the operator. A second means for operating the lifting-disc 247, when the machine is stopped, is provided. This consists of a pawl 271 engaging a notch in the disc 247, and carried by a pawl arm 270, 269 connected by a rod 268 to a lever 266, 265 connected by a rod to the belt-shipping lever 262 of the machine. The shaft 232 is preferably driven from the loose pulley of the machine, and the belt is arranged to project partly on to the loose pulley, when on the driving-pulley, so that the means for lifting the rollers 205<1> may be operated at any time. A means is provided for lifting the rollers 205<1> as the forme cylinder rotates, by means of ca@ 277. On the cam-arms 209 are pivoted cam pieces 273 having arms 275 engaging the cams 277. The arms 209 may be rocked to throw the cam-pieces 273 into engagement with the pins 208 by rocking the arm 212 into the required position. This may be effected by placing the pin on the arm 216 in engagement with the second hook 219 on the rod 221. When the hook 220 is in engagement with the pin, the cams 209 engage the pins 208, and the parts 273 are inoperative.