Patent GB-191212613-A (GB)
Title: Improvements in Printing Machines.
IPC: B41F13/70
Filed: 1912-05-28
Granted: 1913-04-17
Abstract: 12,613. Hoe & Co., R., [Hoe & Co., R.]. May 28. Associating and delivery apparatus; sheet registering-devices, separators, carriers, and guides; pile supports; dropping-roller feeds.- A printing - machine is provided with means for associating the sheets cut from the printed web or webs with separately-printed cover or inset sheets, which are forwarded from a number of pile tables by automatic sheet-feeding mechanism, the specially-printed sheets being fed at a lower speed and then accelerated up to the speed of the sheets from the main web. A separately-printed web, in addition to or in substitution for the separately-printed sheets fed from piles, may be fed at a variable speed, the sheets cut therefrom being accelerated to the speed of the main webs. The separately-printed sheets may be of multi-length and be severed before being associated with the sheets cut from the webs. As shown, the separately-printed sheets are fed from two piles 10, 11, Figs. 1 and 2, arranged side by side, and a pile 12 arranged over the pile 11. In each case the sheets are separated from the piles by friction rollers mounted in arms which are oscillated by cam-mechanism, and weighted detaining - pins as 52 hold the sheets on the piles, which are raised automatically by screws operated by pawls and ratchetwheels. The sheets from the pile 11 are forwarded by rollers 43, 44, to which they are directed by fixed guides, and tapes 59, 60, which carry the sheets to front stops 99,Fig. 5, where they are detained until gripped by further tapes 76, 77 which are driven at a greater speed than the tapes 59, 60. The tapes 59, 60 are tensioned by pulleys 61, 62 on pivoted arms. The tapes 76, 77 are brought into action by a cam-operated lever arm 93, which depresses the stop 99 as it brings the pulley 78 of the tapes 76 into contact with the pulley 79 of the lower set of tapes. The arm 93 also actuates other stops 137, which register sheets forwarded from the piles 10, 12. The sheets from the pile 10 are moved crossways so as to bring them over the sheets fed from the pile 11, by means of droprollers 112, mounted as shown in Fig. 2, and coacting with lower rollers projecting through slots in a table 104, which in conjunction with guides 108, 109, 110 assist in guiding the sheets to the correct position to register with sheets from the pile 11. A side guide 132, and registering jogging-devices 133, 135, effect the final positioning of the sheets from the pile 10, which are then retained by the front stops 137. The sheets from the pile 12 are forwarded to these stops by inclined tapes 166, 167, a drop roll 171, and a pair of speeded tapes 169, 170. The associated sheets from the piles 10, 12 are then either taken by pins 149 on a cylinder 148, and folded by a blade 151 into jaws 155 on a cylinder 153, from which the sheets pass by the aid of a roller 157 and guides 162, 163 to meet the sheets from the pile 11; or the cylinders 148, 153, pass the sheets unfolded to meet the sheets from the pile 11 at the same meeting place. A guide 161, which may be rendered inoperative, being also used in this case. If the sheets from the piles are multi-length sheets, the front parts of the associated sheets are carried round by pins 181 on a cylinder 178, and the sheets are cut in two by cutting-devices on the cylinder 178 and a cylinder 182, the latter carrying the remaining halves of the sheets once around and then delivering them to the cylinder 178. This cylinder 178 transfers the associated special sheets with two sets of sheets cut from webs 2, 3, 4, to a collecting-cylinder 176, from which three completely associated products are delivered for each two revolutions to a cylinder 189'. The products are delivered to a folding-blade 191 which folds them; they are then delivered by known mechanism. The impaling-pins on the cylinder 182 may be put out of action when single - length sheets are being dealt with. In a modification, Fig. 10, cylinders 200, 213, 214, similar to the ones 176, 178, 182, Fig. 5, are arranged to associate sheets cut from webs 2, 3, 4 with speciallyprinted sheets fed from piles 201, 202, and sheets cut from a specially printed or ordinary web 6, which is cut into sheets by cylinders 216 arranged so as to be driven at a quarter or a half of the speed of the webs 2, 3, 4, the cut sheets being accelerated for association with sheets from the pile 202. If desired the web 6 may be associated with the webs 2, 3, 4 before these are cut into sheets.