Patent GB-189812668-A (GB)
Title: Improvements in Printing Machines and Folding and Cutting Mechanism therefor.
Inventor: NEWTON HENRY EDWARD
Filed: 1898-06-06
Granted: 1899-07-06
Abstract: 12,668. Newton, H. E., [Hoe, R.]. June 6. Rotary machines; folding paper; delivery apparatus.-Relates to rotary web machines for printing newspapers of various sizes. (1) The first part of the invention consists of arrangements of printing- mechanisms whereby one of a number of webs may be printed in several colours and the others perfected in black, or all the webs may be perfected in black. Fig. 2 shows one arrangement of machine having three perfecting printing-mechanisms A, B, and C, which may be used for perfecting in black three double-width webs 1, 2, and 3. For printing in colours, three half-width webs 1, 2, 3 are perfected by one end or half of the printing-mechanisms A, B, C. Another half-width web 1<x> is printed on one side in black and on the other side in three colours by the other ends of the mechanisms A, B, and C, and the side of this web having the coloured impressions is then printed in black from a key plate or forme, by the auxiliary printing-mechanism D. The web 1<x> passes first between one end or half of the cylinders G, E, by which it is printed on one side in black, and then passes between the cylinders H, F, by which it is printed in one colour on the other side. It is then printed in colour successively by the cylinders L, J of the mechanism B, and the cylinders P, N of the mechanism C, and is finally printed in black by the cylinders R, S, and transferred laterally by the transferrer 40 for delivery with the other webs to the folding and delivery mechanism 60, Y, which may be of any suitable kind. The perfected webs 1, 2, 3 pass from their respective printing-mechanisms over guide-rollers 11, 12, 22, 23, 24, 33, 34, &c. to the folding and delivery mechanism. The ink ducts for the type-cylinders which print in colours may be partitioned or removable, so that the machine may be used for colour printing, or for printing in black. In another arrangement, there are three main perfecting-mechanisms, and three additional pairs of printing and impression cylinders. The three main mechanisms may be used for perfecting three full-width webs in black; or one of them may be used in conjunction with the auxiliary mechanisms for printing one of the three fullwidth webs in black on one side and in three colours and black on the other side, the three auxiliary mechanisms printing successively on the same side of the web. When the machine is arranged for printing in colours, the third web may be printed in black by using only the first and last pairs of cylinders of the five pairs which are used for printing it in colours. The auxiliary printing- mechanisms may be also used for perfecting a fullwidth web, the web being reversed between the two impressions, or the direction of rotation of one of the printing-mechanisms being reversed. Suitable slitters and folding &c. mechanism may be provided for dealing with the webs in the desired manner. (2) Folding, cutting, and delivery apparatus. This mechanism embodies a simultaneous tucking and cutting mechanism, which first folds the web or sheet, then cuts it along the line of fold, and then nips the two edges so as to associate the two portions. Fig. 12 shows a delivery mechanism to which the web or webs pass, having been previously longitudinally folded or otherwise. A line of paste may be applied along the line of final fold by the pasting-mechanism 336, 337, 348. The web passes to a pair of cylinders or carriers A', C' provided with a cutting-blade &c. 360, 361 for dividing the web into sheets. The carrier A<1> has carrying pins or grippers for securing the leading end of the web and carrying it round until the folding and cutting blade 310, Fig. 16, commences to operate. The blade 310 is mounted to slide radially in the carrier A<1>, and is operated by racks engaged by pinions on the shaft 325 operated by a cam. Co-operating with this blade 310 is a pair of jaws 312, 313 on a carrier B<1>. The jaw 312 is spring-seated, and nips the paper against the carrier A<1> on one side of the blade 310, while the blade tucks or folds the paper. The jaw 313 is spring- seated in arms of a shaft 342 operated by a cam 347. When the fold is formed, the jaw 313 is permitted by a cam to move outward and nip the paper against the carrier A' on the other side of the blade 310. The blade then completes its outward movement, to cut the sheet along the fold line, and the jaws 312 and 313 then close on the edges of the cut sheet. As seen in Fig. 12, there are two pairs of jaws 312, 313 on the carrier B'. The sheets are carried by the jaws to tapes 380, on which they pass under guides 377 into position to receive a final fold by the blade 382 and folding- rolls 381. A cover web or sheets S<1> may be introduced. The folded sheets may be delivered flat by the S-fly 383.