Patent GB-189718678-A (GB)
Title: Printing Press.
Inventor: LIDDLE JOHN
Filed: 1897-08-12
Granted: 1898-08-06
Abstract: 18,678. Liddle, J., [Nichols, E. C., and Stone, I. L.]. Aug. 12. Cylinder machines with plane printing-surfaces.-Fig. 1 shows a side elevation partly in section. Type beds 10, 12 rigidly connected to each other, and ink tables 9, 13, are reciprocated by rods 20, connected to crank-pins 129 on wheels 2 geared to the driving-shaft 144. Mounted on the side frames are reciprocating cylinder carriers 21, operated by rods 22 and crank-wheels 3. The cylinders 15, 16 are journalled in the ends of short beams 14, pivoted to the carriers 21 and oscillated to throw the cylinders alternately off and on impression. The beams are oscillated by vertical screws engaging under the ends of the beams and having toothed nuts engaging sliding rack bars 29. On the lower edge of each rack bar 29 is a rack engaging a wheel on a shaft 127 fixed in a sliding plate 27, which wheel also gears with a sliding rack connected by a link 31 to an arm 32 of a rack shaft 73. On the shaft 127 is also a spur-wheel 24 gearing with a fixed rack 23 and with a rack 28 fixed on the carrier 21. When the shaft 73 is rocked, by means of the cam 33 and rod 30, the racks 29 are moved relatively to the carriers 21 and the cylinders raised and lowered. On the cylinders are wheels gearing with racks on the bed. Each cylinder is provided with a set of grippers 65, 66, operated by gearing on the carriers 21, engaging racks mounted to slide and operated by cams. The paper is fed from a roll 38 over a guide-roller 39 to a pair of cutting-cylinders 17, 18, on the former of which it is pressed by tapes 112. The cylinder 18 is provided with an adjustable cutting-blade adapted to coact with one of a number of longitudinal grooves in the cylinder 17. The cylinder 18 is driven by gearing from a wheel 3, and the cylinder 17 is driven from the cylinder 18 by gearing which is interchangeable to vary the relative speed of the cylinders and increase or decrease the length of sheet cut off. The cut sheet may be fed down an oscillating feed-board by which it is fed to the cylinders ; or the sheet may be fed to the cylinders by the arrangement of tapes 130, 131 shown in the Figure. The tapes 130 pass from the roller 43 to the roller 47, and back over the rollers 57 and 46 to the roller 43. The rollers 47 and 57 are mounted in bars 58 sliding in brackets or frames 75 pivoted to the framing. The rollers 43, 44 are mounted in the brackets 75. The front ends of the bars 58 are hooked on to the cylinder carriers, so that the roller 47 and tapes reciprocate with the cylinders. The tapes 131 run from the roller 44 to the roller 48, returning round rollers 45, 49 to the roller 44. The rollers 48 and 45 are carried by the reciprocating bars 58, and the roller 49 is in brackets 76 attached to the brackets 75. From the tapes 130, 131 the sheets are directed downwards between the cylinders to the grippers by guides 78, 133, and 60. The sheets are taken off the cylinder 16 for delivery by a gripper cylinder 19, the shaft 68 of which is mounted in brackets 55, carried by bars 64, sliding in guides 145 on the framing. The brackets 55 are engaged with bolts 136 on the carriers 21 so as to reciprocate with the cylinders. The sheets are delivered from the cylinder 19 by tapes 79, 80 on to the table 54. When 'making ready' the delivery mechanism may be released from the bolts 136 and drawn back, as indicated in dotted lines, by means of pinions 110" engaging racks on the bars 64. The feed-mechanism may also be tilted, when making ready, as shown in dotted lines. A shifting tympan arrangement, not shown in the Figure, is described. The tympan web is wound on a roller journalled in a recess in the cylinder 16, and this roller is provided with a brake. The web passes out between the cylinders over a system of guide-rollers to a winding-roller. One of the guide-rollers reciprocates with the cylinders, and another is carried by sliding bars operated by gearing from the reciprocating beds. The winding-roller is rotated by gearing and a friction clutch arrangement, the clutch being operated by a cam to cause the winding off of the web at the required times.