Patent GB-365539-A (GB)
Title: Improvements in and relating to rotary printing machines
IPC: B41F13/54
Filed: 1930-10-17
Abstract: 365,539. Printing-machines. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Wood Newspaper Machinery Corporation ; 501, 5th Avenue, New York, U.S.A.) Oct. 17, 1930, No. 31179. [Classes 100 (i) and 100 (ii).] Rotary machines.-In a rotary printing-press which is composed of a number of perfecting units A, B, and a folding unit C, the shafts of the units are arranged longitudinally in line and the driving-shafts of the units are directly connected by means of couplings 14, 15. The units are driven from a main motor 10 arranged above the frame of the unit B, or by a " threader " motor 10a, which drives the shaft 12 of the impression cylinder of the unit B, the other cylinders of the unit B being driven from the shaft 12. The frames 2, 3 of the units A, B, and also the frames 9 of the folding unit and other parts of the machine are connected together by means of soft metal 7 which is cast into depressions formed in the frame sections as described in Specification 237,310, [Class 100 (ii), Printing processes &c.]. The printing and impression cylinders of the units are mounted and are capable of adjustment as described in Specification 265,409, [Class 100 (ii), Printing processes &c.]. - Feeding webs.-The webs are fed from rolls R mounted on spindles 81, Fig. 16, which are moved into their supports 80 by means of levers 83 fitted with notches 82 which engage the spindles 81 and raise them on to surfaces 84 from which the spindles roll into the bearings 80. The spindles are fitted with concave brakes 86 which are actuated by a screw 92 to engage a pair of cones 85 fixed to the spindle 81. The brakes and spindles are adjustable for side register. The web from roll R passes over an adjustable tensioning roller 95, and over guide rollers arranged below the printing couples, and the printed webs, after being slit by a roller 100 and co-operating adjustably mounted slitters 105, are led by turning bars to adjustable tensioning rollers 117, 118, and thence to the drag roller 116 of the former C of the folding apparatus. Inking - apparatus. - The printing - cylinders are inked by rollers 28, Fig. 4; receiving ink from a roller 29 fitted with distributing rollers 30 and supplied from a fountain roller 37 by means of an oscillating messenger roller 60, Fig. 6, which is secured with capacity of angular adjustment on an oscillating shaft 61. The roller 37 is fitted with a scraping blade formed of independently adjustable sections of column width. The roller 37 is driven by bevel gearing 34 and spiral gears 36 from the shaft 33, and the rollers 30 are reciprocated axially by grooved collars engaged by bell cranks each oscillated by an eccentric pin operated by spiral gears from the shaft 33. The roller 60 is vibrated between the rollers 29, 37 three times for each rotation of the roller 37 by means of a cam 71 formed of three tapering projections 71 which engage a roller 70 which is laterally adjustable in a member secured to the shaft 61. The roller 70 moves axially of the cams 71 and the duration of contact of the roller 60 with the roller 37 is controlled by the lateral position of the roller 70. The rollers 28 can be detached from their bearings 46, and the bearings can be adjusted axially of the roller 29 by means of screws 43 received in pivoted threaded sockets 44. The rollers 28 are movable to and from the plate cylinders 20 by means of screws 48. Delivery apparatus; cutting-apparatus.-Cooperating with the drag roller 116 are a number of small rollers 138 carried by levers 135 controlled by trip mechanism operated by a handlever 131, Fig. 13, which can put all the rollers 138 into operation simultaneously. Each of the rollers 138 can be released independently by releasing the head 136 of a spring-bolt from the action of the mechanism controlled by the lever 131. The webs are folded longitudinally by a former 139 and rollers 140, 142, and are then treated by cutting, folding, and collecting cylinders 145, 146, 175, and are finally counted and delivered on to belts by rotary S-flys co-operating with counting mechanism 190.