Patent GB-191017163-A (GB)
Title: Improvements in Printing Presses.
Inventor: MORRISON LEWIS EDWIN
IPC: B41F1/32
Filed: 1910-07-19
Granted: 1911-07-18
Abstract: 17,163. Morrison, L. E. July 19. Feeding sheets ; delivery apparatus. - Relates to means for automatically separating sheets from a pile, feeding them to and delivering them from platen printing - presses, particularly applicable to the Chandler and Price machine. The pile of sheets to be fed rests on a table 53 on a frame 51 bolted to the press frame 35, and the top sheet is removed by a sucker 72 carried by an arm 79, which is pivoted to a lever 81 mounted on a pin 82 on the frame 51. The sucker 72 carries a lug which is normally held against a rod 77, carrying arms 75 in which the sucker is pivoted, by an elastic band. The sucker is connected by pipes 93, to a pump 95, operated by one of the levers 98, rocked about the pivots 100 by a link 102 adjustably connected to the side arm 46 of the press by a clamp 103. The two levers 81 at the sides of the press are connected by a transverse bar 104 which is normally held in engagement with the levers 98 by a spring 105. The bar 104 carries a cam arm 91 adapted to cooperate with a pin 106 on the lever 98, and an arm 89 connected by a link 87 to a bell-crank abutting against a stop on the arm 79. As the machine commences, from the position shown in Fig. 2, to make an impression, the pin 106 engages the cam lever 91, raising the sucker with the adhering top sheet from the pile, whereupon the continued movement of the levers 98, causes the levers 81 to move away from the fixed stops 107 and deposit the sheet on to a series of endless bands in a pivoted frame 55. The bands pass around shafts 54, 56, the former of which is driven by gearing from the wheel 43 of the press. The delivery of the sheets on to the platen is determined by stops 59 on a shaft 60 carrying a crank 61 which is rocked periodically by a link 62, bell-crank 63 and rod 64 from the cam 67 on the shaft 44. The suction nozzles are readily detachable so that nozzles of appropriate size can be fitted for feeding different grades of paper. To throw the automatic feeder out of action, the frame 55 can be turned upon its pivots, a rail pivoted thereto serving to raise the sucker from the pile. The sheet, on reaching the platen, is registered bv stops 111, 117 secured to the frisket frame 110. The stops are sprung towards the platen so that when the frame alines itself with the platen, the stops are caused to move over the surface to register the sheet. The sheet is removed from the platen after printing by grippers 120, which are reciprocated along rods 68 by the bifurcated ends of the levers 98. The rods 68 rest at one end on rollers 69 on the platen, while a roller thereon engages a cam 71 on the tape frame 55 to move this clear of the swinging platen. The grippers comprise a lower jaw 125, sharpened to a knife-edge to pass under the sheet on the platen, and a pivoted upper jaw 126, normally closed by a spring 129. As the gripper advances towards the platen, the upper jaw is held open by a slide 130, which, as soon as the gripper is opened by engagement with a stationary bar, is drawn over the gripper by a spring 132. As the gripper reaches the sheet the slide 130 is caused to release the gripper by the engagement of a rod 133, adjustably clamped in the slide 130, with the edge of the platen. The sheet, when released by the grippers, falls into a box 138, which is oscillated to jog up the sheets by a rod 141 connected to levers 98.