Patent GB-293332-A (GB)
Title: Inking mechanism for printing machinery
IPC: B41F31/30
Filed: 1927-03-28
Abstract: 293,332. Claybourn, L. W. March 28, 1927. Inking-apparatus. - An inking- mechanism for a, printing-press is provided with mechanism whereby the forme-inking rollers can be moved around the peripheries of coacting distributing-drums so as to lie out of contact with the forme cylinder, and subsequently moved also out of contact with the distributing-drums. The drums receive ink from distributing- rollers normally in engagement with a distributing-cylinder, and mechanism interconnected with the mechanism for moving the forme-inking rollers is provided for moving these distributing-rollers out of contact with the drums and cylinder. Each end of each distributing-roller and forme inking roller is also provided with independent adjusting means for adjusting the rollers circumferentially and radially of the drums or cylinder with which they are in contact. The apparatus is mounted on a carriage slidable towards and from the forme cylinder and comprises two sets of distributing-rollers 74 - - 76, Fig. 3, and 77 - - 79 contacting with a longitudinally reciprocated distributing-cylinder 71, the rollers 74, 77 receiving ink from a feed-roller 41 supplied by a messenger roller 61 from a duct 35, and the rollers 76, 79 supplying ink to longitudinally reciprocated drums 87, 88 with which contact the forme-inking rollers 111 - - 1'14. The roller 114, Fig. 19, is carried at each end in an arm 212 secured to an arm 227 which can slide on and pivot about the shaft of the drum 88 and is provided with a pair of open slots 273, 274 in which engage cams 275, 276 on a sleeve 151 extending across the machine. Similar means are provided for carrying the rollers 111, 112, 113, the arm for the roller 113 being mounted about the shaft of the drum 88 and those of the rollers 111, 112 about the shaft of the drum 87. All the operating cams are carried by the sleeve 151. The cams and slots are so constructed that upon turning the sleeve 151, the arms 227 first turn about the shafts of the drums 87, 88 to move the rollers 111 - - 114 out of contact with the forme cylinder 116 and then slide upon the shafts to move the rollers out of contact with the drums 87, 88. Each end of each of the rollers 111 - - 114 can also be independently adjusted with respect to the forme cylinder and to its coacting drum 87 or 88. For the purpose of adjusting the roller relatively to the forme cylinder, the arm 212 is rotatably mounted on a hub 226 on the arm 227, and is angularly adjustable thereon by a bolt 230, Figs. 17 and 19, rotatably mounted in the arms 227, 212 and adapted to operate a cam 232 mounted in an inclined slot 231 in the arm 212. The adjustment of the roller relatively to the drum 88 is effected by sliding the roller bearing 213 on a guide 208 on the arm 212 by the operation of a bolt 216 which actuates a nut 217 mounted in a slot 218 which is parallel to the guide 208 and inclined with respect to the drum 88. The distributing-roller 76 and the pair of distributing-rollers 74, 75 are carried at each end by brackets 157, 168, Fig. 11, secured to plates 121 having ring portions 128 which freely embrace the shaft 72 of the distributing-cylinder 71 and are provided with shoes 138, 139 with which coact cams 132 on sleeves 73 rotatably mounted on the ends of the shaft 72. The lower distributing-rollers are similarly mounted, and by turning the cam sleeves all the rollers are moved out of contact with the cylinder 71. Each end of each of the rollers 74 - - 79 can also be independently adjusted with respect to the cylinder 71 and for this purpose the roller bearings are adjustably mounted on guides 171 in a manner similar to that in which the forme-inking rollers are adjusted on other guides 208. The brackets 157, 168 are also angularly adjustable on the plates 121 to vary the position of the rollers 7G, 79 relatively to the drums 87, 88 respectively and of the position of the rollers 74, 77 relatively to the feed roller 41. The cam sleeves 73 are connected for simultaneous actuation by being geared to toothed segments 149, Fig. 15 on a cross shaft 150 passing through the cam sleeve 151 which actuates the forme-inking rollers, this shaft being geared at one end to a shaft carrying a hand-wheel. A spring plunger carried by one of the segments 149 normally engages a hole 320 in a plate 315 loose upon the shaft 150 and carrying a worm 312 engaging a worm segment 311 fast on the sleeve 151. Operation of the hand wheel thus operates the sleeves 151 and 73 simultaneously so that all the rollers of the inking-apparatus may be separated from one another, which is desirable when the press is inactive. By disconnecting the segment 149 from the plate 315, the distributing-rollers may be moved independently of the forme-inking rollers. By operating the worm 312 a small simultaneous adjustment of the position of the forme-inking rollers may be effected to compensate for slight changes in their diameter. One end of the feed roller 41 is mounted in a slide operable by a screw to adjust the roller for parallelism with the fountain roller 36. The longitudinal reciprocation of the cylinder 71 and drums 87, 88 is effected by a lever, rocked on a vertical pivot by a connection with a suitable part of the press, and provided with three arms engaging grooved collars on the shafts of the rollers.