Patent GB-190115356-A (GB)
Title: Improvements in Printing Machines.
Inventor: NEWTON HENRY EDWARD
Filed: 1901-07-29
Granted: 1901-08-31
Abstract: 15,356. Newton, H. E., [Hoe, R.]. July 29. Rotary machines.-Relates to rotary web printing-machines for printing papers of varying numbers of pages. Fig. 1 shows, diagrammatically, a machine for printing papers varying by two pages up to the full capacity of the machine, in this case sixteen pages. In the lower part of the machine there are two printing-couples A, B, consisting of pairs of cylinders 2, 3 and 4, 5, the cylinders 2, 4 each having two formes abreast on the forme cylinders, and with the columns running round the cylinders. Inking-mechanisms 6, 7 are applied to the cylinders 2, 4. In the upper part of the machine are two other printing-couples C, D, consisting of pairs of cylinders 8, 9 and 10, 11, and inking-mechanisms 12, 13. The couples A, B perfect a full-width web W, which, after printing, passes round guide-rollers 30, 31, 34, 36, 37 to cutting and collecting cylinders 38, 39. The couples C, D each perfect a halfwidth web W<2>, W<1> respectively. Each of these webs, after being passed through one end of the cylinders, is reversed and transferred laterally by triangles 14, 15 or turning-bars &c., and is then passed through the other end of the same pair of cylinders by which it is perfected. The web W<1> passes round guides 32, 35, 36, 37 and with the web W to the cutting and collecting cylinders 38, 39. The gearing is so arranged that one of the couples C, D (in this case C) can be driven at the same or half the speed of the couples A, B, and D. As shown in Fig. 1, the machine is producing fourteen-page papers, the couple C being run at half speed, so as to print two pages at each revolotion while the couples A, B are printing eight pages and the couple D four pages at each revolution. The web W<2> passes round guides 33, 40, 41 to cutting-cylinders 42, 43, and the sheets are taken and accelerated by a cylinder 45 by which they are delivered to the collecting-cylinder 39 at the same speed as this cylinder is running. The accelerating-mechanism is preferably of the kind described in Specification No. 9898, A.D. 1900, in which elliptical gearing is employed. The cylinder 39 collects two sheets cut from each of the webs W, W<1>, and associates them with the two-page sheet from the web W<2> to produce the fourteenpage product. For four-page papers, the couples A, B will be used on full-width webs, and the collecting-mechanism will be thrown out. For six-page papers, the couples A, B will print a fullwidth web, and the couples C, D, both running at full speed, will be used as a single machine to perfect a half-width web. For eight-page papers all the couples run at full speed, the couples C, D being used as a single machine to perfect a fullwidth web. For ten-page papers, the couple D is thrown out, and the couple C prints two-page sheets at half speed, and these are associated. with eight-page sheets produced by the main couples A, B. For twelve-page, papers, the combination is the same as for-six pages, but pairs, of six pages are collected to form the twelve-page products. If a machine of greater capacity is required, an additional pair of printing-couples, running at full speed as a single machine, may be added to the machine, and placed above the couples C, D. The products pass to any suitable delivery apparatus, such as a longitudinal folder 68 &c. Another arrangement of machine is described, in which the formes have the columns running lengthways of the cylinders, and web reversing and transferring mechanisms for all three printing-mechanisms are provided consisting of diagonal turning-bars and guide-rollers. The gearing of this machine is so arranged that both of the couples C, D may be driven at full or half speed, and also the couple D may be driven at full speed and the couple C at half speed. This last machine may be used for printing in colours, by leading one half of the web printed by the couples A, B through the couple D, by which it is printed in a second colour, the webs being so manipulated that the colour sheet comes on the outside of the final product. Or the entire machine may be used for printing in colours by passing the web from the couples A, B through the couples C, D. An arrangement of machine is described in which the framing is made in sections bolted together, so that sections of framing carrying printing, transferring, and accelerating &c. mechanisms may be provided for adding to existing machines for increasing their capacity.