Patent GB-190623006-A (GB)
Title: Improvements in Rotary Printing Presses.
Inventor: AMES JOHN FREEMAN
Filed: 1906-10-17
Granted: 1907-01-24
Abstract: 23,006. Ames, J. F. Oct. 17. Rotary machines; inking - apparatus; feeding sheets; feeding-apparatus for webs.-R elates to rotary machines for printing simultaneously in one or more colours on webs of paper or fabric for sacks &c., or on boards, boxes, &c. Fig. 2 shows a sectional elevation of a machine for printing in one, two, or three colours on a continuous web of paper or fabric which is afterwards to be cut up into 'lengths for salt or flour sacks &c. The forme on the cylinder 2 is inked in the different colours by inking-rollers 4 supplied by distributors 5, 6, 7, vibrators 8, and duct rollers 9, from the ducts 10. The two side inking - apparatus are arranged on frames 14 movable on rails 15, so that one or both may be moved away from the cylinder 2 when it is desired to print in one or two colours. The duct roller 9 of the central inking-apparatus is operated by a ratchet, the pawl lever 22 of which is connected to a rod 20 operated by a cam 17 on the shaft 16 of the cylinder 2. The cam 17 operates a second rod 21 connected to an arm of the rock-shaft 29 on which are fixed the arms carrying the vibrator 8 of the central apparatus. The duct rollers 9 and vibrators 8 of the side inking-apparatus are operated by detachable rods from the lever 22 and the shaft 29, so that the side inking-devices may be rendered inoperative. The rods 25 are connected to the ratchet arms 26 and are shown as hooked to engage pins on the lever 22, while similar rods hooked to arms on the shaft 29 operate the rollers 8. The rollers 6 are reciprocated longitudinally by removable cam-collars on the ends of their shafts, engaging cam - surfaces on the framing. For the application of the different colours to the forme, the inking-rollers 4 are made hollow and are covered with inking-surfaces or pads 38 consisting of elastic material on canvas &c. stretched on the rollers by means of pins 40 and ratchetdetained winding-rods 41. The elastic material on each roller, after being inked from the forme to show the design thereon, may be readily cut away so that afterwards it applies ink to the forme only in the parts required. The forme cylinder 2 is driven continuously from a driving-shaft 43 and is geared to the impression cylinder 3. When a a web of fabric &c. is printed, it is fed over the cylinder 3 by two feed-rollers 48, 49, which are moved to and from the cylinder 3 so as to commence the feed before the forme comes into contact with the fabric and to continue it after the impression is completed, so as to prevent blurring of the impression and also to feed the required length of material at each impression. The roller 48 is carried by arms 50 on a shaft 51, and the roller 49 by arms 52 pivoted at 53 on the arms 50. Screws 54, engaging the arms 52, regulate the pressure of the rollers 49 on the cylinder 3.. A cam on the shaft 16 operates an arm on the shaft 51 to raise and lower the feed-rollers, and this cam is formed of adjustable segments so that its effective length may be varied to feed different lengths of material at each operation. The web may be guided to the impression cylinder by a bar 61, mounted on the rear ends of the arms 50 and having a series of holes for guide-pins 63, which can be moved to different lateral positions. A machine modified for printing boards, boxes, &c. is described, in which one of the side inking- mechanisms is removed and is replaced by a feedtable provided with an endless chain feed-device, by which the boards &c. are carried forward successively from the bottom of a pile. In this latter machine, the impression cylinder 3, which is adjustable by the screws 69 for different thicknesses of material, is driven from the shaft 16 by a flexible belt and pulleys.