Improvements in and relating to rotary folding apparatus for use in rotary web printing machines and the like

摘要

343,368. Printing-machines. FOSTER & SONS, Ltd., J. and BRADSHAW, R., Soho Foundry, Preston. April 1, 1930, No. 10360. [Class 100 (ii).] Folding paper.-The impaling pins or needles 12 of a rotary folding-cylinder 7 are mounted in holders 13 which screw into needle bars 8, 9 mounted to move in grooves 10, 11 in the cylinder, the needles 12 operating through apertures in cover plates 27, 33 which when removed permit of access to the needles and their operating means from outside of the cylinder. The bars 8, 9 are secured by screws 16, 17 to arms 18, 19 on a rock shaft 20 which is operated by the action of a cam on a bowl 23 on a lever 22 freely mounted on the shaft 20. The bar 8 is formed with slots 14, 15, Fig. 3, at its ends, and normally the slot 14 engages a projection on the lever 22 and motion is transmitted to the shaft 20 and to the impaling needles. If it is desired to put one set of impaling pins out of action, the bar 8 is moved to the right and so causes the lever 22 to oscillate idly. A projection 25 on the bar is received in a recess in the cylinder, and the needles are thus held inoperative. The bar 9 is constructed so as to remain in action permanently, the cam-actuated lever 32 being fixed by a screw to the rock-shaft 20.