Patent GB-189915654-A (GB)
Title: A New or Improved Flat Bed Travelling Cylinder Web Printing Press.
Inventor: MARKS GEORGE CROYDON
Filed: 1899-07-31
Granted: 1900-05-19
Abstract: 15,654. Marks, G. C., [Wood, H. A. W.]. July 31. Cylinder machines with plane printing-surfaces.-Relates to machines having stationary beds and reciprocating cylinders, and consists in combining two machines, placed one above the other, by which two webs may be printed for producing papers up to sixteen pages. Fig. 4 shows a sectional elevation, in which A is the framing, B, C, D, E are the type beds, and F, G, H, I the impression cylinders. The carriage J, in which the two lower cylinders F, G are mounted, is reciprocated by a crank-pin 29 on a bevel gear 30. The crank-pin 29 engages a slot in a cross-bar M of the carriage. The carriage K of the upper cylinders H, I is similarly driven by its cross-bar N, crank-pin 290, and bevel-wheel 300. The webs w, w<1> from the rolls W, W<1> are preferably passed through the machine as shown, the web w passing round guide-rollers 10, 11 to the feeding-in mechanism 12, over the looper 13, round the cylinder F and guide-rollers 15, 16 in the carriage J round guide-rollers 17, 18, auxiliary looper 19, guide-roller 20, cylinder I, and rollers 21, 22 in the carriage K, looper 23, and feeding - out mechanism 25, from which it passes over guide-rollers 26, 27 to the folder L &c. The web w<1> passes round the cylinders G, H and guide, feeding, and looping rollers marked with the same numerals as those of the web w but with the addition of a cypher. From the feeding-out mechanism 250 the web w<1> passes over the rollers 260, 270 to the roller 27, where the webs are associated and passed together to the folder &c. The webs, being usually wide ones, are split, and one half transferred laterally on to the other half by turning bars 28 and 280. The cranks 29, 290 of the wheels 30, 300 are preferably set at an angle of 90 to each other, so that the lower cylinders F, G are printing while the upper cylinders H, I are reversing and vice versÔ. This arrangement necessitates the use of the additional loopers 19 and 190, which are carried by slides 31 operated by cams 32. The cranks 29, 290 may also be set at an angle of 180‹, so that the cylinders are all printing at the same time, but the two upper ones travel in reverse direction to the two lower ones. In this latter arrangement the loopers 19, 190 are dispensed with. The machine may be used for printing one web w, in which case the upper machine is stopped by throwing out the gear which drives the wheel 300, and the web w is passed through the lower machine in the usual way, either of the feed-mechanisms 120 or 250 being used as feeding-out rollers. The gearing for driving the mechanism 120 is preferably arranged so as to reverse the movement when it is to be used for feeding-out the web w. In a modified arrangement, the lower machine B, C, F, G, &c. is used for printing one web w, and the upper machine D, E, H, I, &c. for printing the other web w<1>, the webs being turned and passed to a folder &c. placed at rightangles to the machines. In another modification the webs are printed as in the modification last described, but the folder is placed in line with the machines.