Patent GB-293600-A (GB)
Title: Improvements in or relating to sheet delivering and stacking devices for printing machines
IPC: B41G1/00
Filed: 1927-09-07
Abstract: 293,600. Weingõrtner, E. Sept. 7, 1927. Delivery apparatus. - In sheet delivery and stacking devices, adapted for use chiefly with bronzing- machines, and provided with a table which descends as the stack increases in size, and with stacking- members arranged laterally and at the end directed towards the machine to guide the sheets, the stacking . members consist of oscillating arms on three shafts, one of which is rocked from a shaft on the machine and rocks one of the shafts at right-angles thereto, the third shaft being actuated in reverse direction by the second shaft. The device is mounted in frames 12 and is preferably transportable by means of rollers loosely mounted in brackets 61 and adapted to be projected by screws 62 when the device is to' be moved. The sheets issuing from the machine are fed forward by tapes 4 passing over a shaft 5 adjustably mounted in slots in the frames 12. Rollers 6, mounted in arms 7 and resting under the influence of gravity on the tapes 4, facilitate the feeding of the sheets. The arms 7 mav be secured to a bridge 9 on the machine, but when the device is transportable, the arms 7 and tape-carriers are preferably mounted in the frames 12. The sheets issuing from the machine meet inclined and upwardly and inwardly bent members 57 serving to curve the sheet and give it greater stiffness in order to facilitate stacking. The sheets are fed from the machine on to a table 27 supported on two angle-irons 26 each secured to two vertical endless chains 23. The sprocket-wheels 22 carrying two of the chains are mounted on a shaft operated by toothed gearing 21 from other shafts driven by chains 19 from the shaft 14 carrying sprocket-wheels 17 on which the other chains 23 are supported. The shaft 14 is rotated intermittently by worm gearing 15, 28 actuated by pawl-and-ratchet mechanism from a crank 33 on the machine. The extent of motion of the shaft 14 can be regulated by adjustment of the crank-pin. The pawl-and-ratchet mechanism is adapted to be connected to the worm 28 by a clutch under the influence of levers and links 34, 34<a>, the arrangement being such that, at the limit of upward or downward movement of the table, a stop 27<a> thereon engages one of the levers 34 to ccnnect or disconnect the mechanism. A clutch is also provided between the worm-wheel 15 and the shaft 14 to enable the table to be raised to its upper position by means of the handle 16 on the shaft. When full, the table is removed from its supports and replaced by an empty one. The sheets, as they are fed out of the machine, are engaged by a number of arms 36 mounted on a shaft 35 oscillated from an eccentric on the machine. The arms lie close to the edge of the table, their upper ends being slightly lower than the level at which the sheets issue from the machine. The oscillation of the shaft causes the arms to push the sheets up to stops 39 secured to a tranverse member 40 adjustable, according to the dimensions of the sheets, along graduated battens 41. Secured above the frames 12 are two rods 47 which are toothed along their upper surfaces and on which run toothed wheels 46. The wheels 46 are carried in arms 45 which, at their other ends, are provided with sleeves supporting shafts 42. The wheels 46 are mounted on shafts 48 provided with handwheels 49 so that the shafts can be adjusted transversely to the frames according to the width of the sheets to be stacked. The shafts are connected together at the rear end of the device by oppositely-directed arms and an adjustable link 55, so that motion of one shaft results in motion in the opposite direction of the other shaft. One of the shafts is embraced by a member 51 adapted to be rocked by a member 50 slidable but not rotatable on the shaft 35 in order to effect the oscillation of the shafts and consolidation of the sheets fed to the table. Consolidation is effected by means of arms 43 secured to the shafts, plates 56, bent backwards in the direction of the machine, being secured to the inner faces of the arms 43 to facilitate stacking of the sheets. The extreme end of one shaft 42 is engaged by a fork on a part of the member 50 so that transverse adjustment of the shafts necessitates no disconnection of the parts for oscillating the shafts.