Patent GB-598634-A (GB)
Title: Improvements in inking mechanisms for printing presses
IPC: B41F31/30
Filed: 1945-09-12
Abstract: 598,634. Printing - machines. GOSS PRINTING PRESS CO., LTD. Sept. 12, 1945, No. 23567. Convention date, Sept. 14, 1944. [Class 100 (ii)] Inking apparatus.-In a printing-machine such as a multi-colour machine having an impression cylinder 10 coacting with printing- cylinders B, C, D, E, F, the inking-rollers for the cylinders are mounted in carriages 22, 26, Fig. 1, which can be moved bodily into and out of printing position, the inking-mechanism being driven by wide gears 35, 31 which engage the driven gears 36, 32 of the inking-mechanism prior to the engagement of the printing members with the paper so as to drive this mechanism at the required speed prior to the inking of the printing-surfaces. The inking-mechanism is so arranged that the supply of ink to any printing member may be cut off by a manual operation, and the supply to all members is restored automatically when the carriages 22, 26 are moved to bring the printing-rollers back to operative position.. Also the supply may be cut off automatically upon moving the carriages to inoperative position, and a number of inking-rollers may be cut off by the movement of one carriage. Each inking train comprises a pick-up roller 39 which is eccentrically mounted in bearings 44 so that the roller 39 can be moved to a position as shown in Fig. 7 in which it does not contact with either the duct roller 20 or a roller 48 of the distributing rollers. The eccentric bearings 44 are normally maintained in a position in which the roller 39 is operative, by means of latches 77, 78 mounted in a lever arm 70 pivoted about a pin 71, the latches being held by springs to engage a fixed pin 86, Fig. 6, and a pin 91 on a lever 72 which is connected by link-and-lever mechanism 96, 98, 102, 104, Fig. 8, to a sliding rod 116 having a pin 114 which engages lever 110 fitted with a roller 111 engaging a bar 112 on the machine frame. When the operator grasps the latches 77, 78 and the lever 70, and moves the lever 70 to the position shown in Fig. 7 the bearings 44 are moved to trip the roller 39 by a lever 55 connected to a rod 54 normally raised by a spring 59 to maintain the lever 55 horizontal and the roller 39 in operation. The lever 70 is engaged by the fixed pin 86 when depressed to trip the roller 39. This tripping movement may be assisted by an extension spring 120. The roller 39 is automatically restored to operative position by movement of a carriage 93 attached to the carriage 22 or 26. When the carriage 93 is moving back to printing position a roller 111 on a lever 110 mounted in the carriage engages a fixed member 112 and the lever 110 operates a link 116 connected by linkage 105, 102, 98, 96 and a lever 72 fitted with roller 91 which engages the underside 83 of the latch 77, so that clockwise movement of the lever 72 moves the lever 70 clockwise and restores the lever 55 to the position in which the bearings 44 move the roller 39 into contact with the rollers 20, 48. The link 116 is connected to a lever 118 which transmits similar tripping movements to rollers 39 of adjacent printing rollers.