Patent GB-191027967-A (GB)
Title: Improvements in or relating to Printing Presses.
Inventor: JUSTICE PHILIP MIDDLETON
IPC: B41F1/40
Filed: 1910-12-01
Granted: 1911-05-18
Abstract: 27,967. Justice, P. M., [Thomson Press Co., J.]. Dec. 1. Inking - apparatus. - In a platen press, particularly of the "Colts " Armory " type, the travelling inking-rollers are given a very slow movement while in contact with the inkdrums, a n d tripping- devices comprising a latch which can be held out of engagement by a hand-operated lever are provided. Also, one or more of the travelling rollers may be replaced by reciprocating riderrollers 164, and means for pivotally mounting and easily adjusting the distributor 175, for actuating the messenger roll 186, for mounting the doctor and driving the ductor roll 102, and for taking the end thrust of the inking-rollers and holding them out of engagement with the ink-drums, are described. The link-work for moving the carriage 116 is so constructed that the links 65, 63 have their pivots in line when the connecting - link 62 and return-crank 50 are at their dead-centre, thus giving a very slow movement to the inking- roller carriage 116 while it is near the top of its path. The connecting-link 62 drives a lever 228 having a latch 134, the pin 136 of which engages a slot in a sector 134 attached to the arm 63 and moves the carriage 116, unless a roller 146 on a bell-crank lever 138, positioned by a handoperated rod 140, prevents this engagement, in which case the balance - weight w keeps the carriage 116 in its uppermost position, which is determined exactly by a stop 150 engaging the main shaft 152. In order to improve the distribution of the ink, and avoid double rolling, one or two of the inking-rollers fare replaced by metal distributors 164 carried by links pivoted to the replaced roller bearings, and reciprocated longitudinally by cams at each end engaging rollers on fixed pins. In order to allow the ready removal of the inking-rollers 119, 120, and for easier adjustment, the main distributing-roller 175 is mounted on pivoted arms 176 having slots in which the flattened ends of the roller 175 are clamped by a bolt. The roller may be swung into the position shown by the dotted lines. The messenger roll 186 is vibrated by an arm 180 adjustable on the shaft 188, and engaged by a cam 192 formed on the crank-shaft disk. The ductor F is mounted on a bracket 177, thereby simplifying the casting of the main frame, and the ductor roll is driven through a ratchet-lever 100, the pivoted end bearing 106 of which slides on a rod 110 between a fixed tappet 107 and an adjustable tappet 113. The rod 110 is pivoted to an extension 105 of the lever 63, and the ductor roll is therefore actuated only after a movement of the travelling rollers. The forks for the bearings 171, Fig. 8, of the ink rollers 118, 119, 120, 121 have notches 170 formed in their underside, so that, by tilting the bearings as shown by the dotted lines, the rollers may be held out of engagement with the ink-drums. The ends of the bearings 171 are closed by steel plugs 174 which take the end thrust, and similar end pieces are provided for the bearings of the rollers f.