Patent GB-189923818-A (GB)
Title: Improvements in or relating to Printing Machines.
Inventor: MEISEL FRANCIS
Filed: 1899-11-29
Granted: 1900-01-27
Abstract: 23,818. Meisel, F. Nov. 29. Rotary machines; feeding sheets.-Fig. 1 shows a sectional elevation of a machine embodying the invention. In the frame A is a driving-shaft a having a pinion geared to the wheel c on the shaft of the first forme cylinder B, and this in turn drives the impression cylinder D, second impression cylinder E, and forme cylinder G through the train of gears d, e, f. The web of paper g is drawn from a roll 25 by feed-rollers 26, 27, and is cut into sheets by cutting- cylinders 31, 32. The rollers 26,27 and cutting- cylinders are mounted in a carriage H mounted to slide on guides 28 and adjustable towards and away from the cylinders B, D by a rack and pinion 29, 30. When adjusted the carriage H is fixed by clamps 55 operated by an eccentric shaft 56. Sliding on the carriage H is an auxiliary carriage K adjustable by the rack and pinion 22, 23. In the carriage K is fixed a table 35 from which a smooth-surfaced flexible band 36 is stretched over a bar 37 in the carriage H to a winding-roll 38. The sheet passes over this band 36 and the table 35 to the grippers 20 of the cylinder D, and by adjusting the carriages H and K the distance of the cutting-cylinders from the cylinder D may be adjusted for the required length of sheet, or the carriage moved back far enough to give access to the first pair of cylinders B, D. The cutting-cylinder having the cutting-blade is provided, in front of the blade, with a spring having a piece of elastic material for gripping the paper against the other cylinder during the cut. On the other side of the blade is a brush which serves to prevent the front edge of the web from being carried on by the cutting-blade. The relative velocity of the feed-rolls and cutting-cylinders may be varied by change gearing, for varying the length of sheet cut. The sheets are moved over the band 36 by feeding-belts 40 having facing-strips of pliable material, such as plush, of less width than the belts. These belts run on rollers 42, 43, 45, in the carriage K, driven at the same surface speed as the printing-cylinders. Rollers in pivoted arms 46, 47 are provided for tightening the belts, that in the arm 45 being grooved to prevent it from flattening down the plush &c. surface. The sheet is held on the cylinder D after the impression by rolls 15, and is released by the grippers 20 to an arrangement of tapes S which hold it on the cylinder E until it passes between the latter and the second forme cylinder G. The sets of tapes S are mounted on rollers in adjustable frames or holders, and special means are provided for tightening the tapes individually or collectively. The leading edge of the sheet is pushed out from the cylinder D, after being released by the grippers 20, by radially-sliding pushers. The printed sheets pass between the set-off web h and tapes b<1> on rollers d<1>, &c. to the accumulating cylinder M. A rotary brush 110 is provided to prevent the sheets from following the set-off web h. The set-off web passes from the roll T over guide-rollers 98, 99 round the cylinder E and over guide-rollers 100, 101, 102, 103 &c. to the winding-up roll V. The guide-rollers 98, 99 may be removed, and the set-off web dropped down, as shown in dotted lines, to afford access to the cylinder E for making ready. A removable board 120 is provided for the operator to stand on when making ready.