Patent GB-190115435-A (GB)
Title: Improvements in Web Printing Machines.
Inventor: IMRAY OLIVER
Filed: 1901-07-30
Granted: 1901-09-07
Abstract: 15,435. Imray, 0., [Scott, W.]. July 30. Rotary machines ; folding paper.-Relates to machinery in which one or more webs are printed, pasted, associated, cut, folded, and delivered as counted products, with or without cover sheets, which may be printed in colours. A machine with two main rotary printing-mechanisms and a supplemental colour-printing mechanism is shown in Figs. 1 and 2. Lower printing-couples 101 and 102 print four pages abreast on a web 100, which thence passes over tapes 103 and guides 104 to V- shaped formers 105, 106, splitters 107 dividing the web into four sections. Two two-ply webs are formed by rolls 108, and one four-ply web by rolls 109, and the web is cut by cylinders 110, 111. Usual pins 112 are provided to retain the sheets on the cylinders 110, and release them as creasing- blades force them into grooves of a cylinder 114 provided with grippers 115 delivering on tapes 116. Upper printing-couples 118, 119 print on another web 117, which passes next to. the formers when both webs are in use. Revolving notched blades 121 apply short lines of paste to alternate transverse margins of the two webs, and the formers have grooves 123 preventing contact with the pasto. When a coloured cover is required, the web 100 is split longitudinally by a splitter 124, and a quarter is taken through colour-printing mechanism 125, and then over an adjustable guide to the formers ; or two unequal webs are passed through the parts 101, 102, and the smaller is taken through the part 125. A blade 129 may apply paste to one of the webs coming from the rollers 108. In alternative-folding mechanism one cutting-cylinder may be arranged to carry alternate sheets around with it and associate them with the succeeding sheets upon the other cutting-cylinder, and a blade may apply paste to the central margins of the sheets on the first cylinder. Other means for cutting sheets from webs and delivering them folded are shown in Fig. 4. A cutting-cylinder 136 has two opposite, blades 137, and a cylinder 138 three cutting-grooves 139 with pins 140 in the rear operated by cams 141, 148, and also three double-edged folding-blades 142 with usual rollers 143 and guide-ring 144 holding the blades inactive until forced into a cam 145 by flying-cams 146, when the blades fold of the sheets between rollers 147 as usual. In order to be able to collect and fold-off two sheets, the cams 146 are mounted on an endwise movable shaft 150, to which a camfiller-is eonnected and adapted to move into the opening 145, and a cam 151 on the cylinder 136 is connected to the shaft 150 by a lever 152. By these means the folding-blades are actuated in alternate succession. The lever 152 is made in two parts connected or disconnected at will by a screwbolt 154. The cam 148 must also be withdrawn, and so rendered inoperative on the pins 140 in alternate succession, and for this purpose it is mounted on a rock-shaft and operated from a cam 157 on the shaft of tha cylinder 136 through a lever 158, rod 159, and arm 160, which can be locked at will. When the pins 140 are withdrawn by the cam 141, the sheets are retained by guides 165, and fed forward by a roller 166 driven from a roller 108 &c. A modification is shown in Fig. 7. A carrier 171 hasthree grooved sheet-receiving surfaces 172 and pins 140, and co-acts with a revolving knife 173. A set of tapes 174 feed the sheets forward if they are being collected. Two folding-blades 175, 176 are mounted in a frame 177 carried on a revolving shaft ; 178, . which is mounted eccentrically on the carrier 171, and makes three turns to two of the carrier. One or both blades can be put into operation as described in Specification No. 7860, A.D. 1896. Folding-blades fast on their carriers may be used. , The folded sheets pass to a usual S-fly 191 and tapes 192. Counting-mechanism is also shown in Fig. 7, and comprises spirals 193 fast on a tube 194 and connected by radial faces, and means for rotating. the spiral so that the copies are arrested farther and farther from the point where the guides 190 pass between the tapes 192, until the faces are brought above the bend in the guides, when the spiels are. suddenly thrown, forward so that the next copy is arrested at the crossing point. of the guides and tapes. The spirals are operated, by a continuously-rotating shaft 196 connected by a spring to the spirals, a tooth 199 on a disc connected to the spirals coacting with a detent 200 operated by a cam 201. A modification is provided with movable sectors loosely mounted on a shaft and pressed against stop-pins on spirals fast on the shaft. The sectors co-act with detents on a rock-shaft until a pin on each spiral strikes an arm of the shaft, whereupon the sectors are thrown against the pins by spring rods. Inking-mechanism is shown in Fig. 15. An ink fountain 59, distributing- cylinders 60, 61, 62, and rolls 64, and forme rolls 65, are mounted in a frame 53 mounted to slide on a frame 52 carrying the plate and impression cylinders 118. The cylinders 60, 61, 62 are driven from the gear on the cylinder 118, and vibrated by the engagement of grooved collars 70 on their shafts with antifriction rolls 69 on levers 66 mounted on a rock-shaft 67 and stud 68, one arm of the levers engaging a cam 71 on the shaft 72, of the fountain roller. The ductor roller 75 is carried in arms from a rock-shaft 76, an arm of which engages an adjustable compound cam on the shaft 72. In order to hold the inking.apparatus so that it can be driven from the gear on the cylinder 118 with or without the rolls 65 in contact with the formes, unequal arms 94, 95 are pivoted on a stud on the frame 53 and adapted to hook on a pin 92 on the frame 52. A modified. generalarrangement . for three web-perfecting printing-presses, one above the other, is also described, and may include folding-blades &c. described in Specification No. 7860, A.D. 1896. The lower press may run at the same or half the surface speed of the middle press. In the latter case, two sets of sheets are cut, one set half the length of the other. For full-width split-webs there are two side-by-side folders and, by adjusting guides, two sheet paths of equal length leading to a common point of delivery, or two sheet paths of unequal lengths and separate delivery points.