Patent GB-191303888-A (GB)
Title: Improvements in Printing Machines.
Inventor: MCPHERSON ALFRED
IPC: B41L45/00
Filed: 1913-02-15
Granted: 1914-02-16
Abstract: 3888. McPherson, A. Feb. 15. Addressing and like machines; platen presses; inking - apparatus.-In an addressing or like machine of the kind in which fixed and variable matter is printed simultaneously, separate inking-devices are provided for the fixed and variable printing-surfaces, which are both inked, in different colours if desired,before the variable matter is brought to printing position. The fixed surface b is preferably inked by travelling inking - rollers f. The address or like plates are preferably inked on their way from the hopper c to the printing position by rollers g receiving ink from a table 45 attached to the swinging arm 29 carrying the plate-carrier 32, but an ink-ribbon may be employed as an alternative. Feed and delivery mechanisms for the address plates are described. The platen a is adjustably carried by a lever pivoted at 80 and operated from the shaft 67 by links 75, 76, 79. The inking-rollers f for the fixed surface b receive their ink from a ductor roll on the shaft 99 actuated by ratchet mechanism and links from the frame 92. Some of the inking-rolls g for the address or like plates receive their ink from a table 45 inked by other rolls g supplied from a ductor roll 43 actuated through a pawl 50 on the end of the axle 51 of the messenger roll. This is operated by engagement with the circular slot 52 in the connecting-rod 48. The address plates are separated from the bottom of the pile in the hopper c by tongues on slides operated by levers h engaging cams 27. The plate-carrier 32 is raised by a cam 34 engaging a roller 35, and receives the bottom plate in a recess 33. It is then retracted by a spring 37 and carried round by the arm 29, which is loose on the shaft 28 and actuated from the plunger 56 by a rack and pinion 54, 55 until the plate, which is held in position by guides 38, rests on the front end of the plunger 56, then in its rearmost position. The carrier 32 then moves outwards and drops the plate into position on the front of the plunger 56, where it is held by a ledge 71 and spring-controlled grippers 69 operated by cams 70. The plunger 56 then moves forwards through an aperture in the fixed type until the surface of the address plate is in printing position. The movement of the plunger 56 is effected by levers from a cam 61. On the return of the plunger 56 the plate is released by grippers 69, and taken by grippers 108 on an oscillating carrier operated by levers 103 from the platen-carrying lever. When the plate is in an horizontal position, as shown in Fig. 2, above a recess in one of the links of a conveyer chain k, the carrier j is stopped by a fixed pin, and further movement of the levers 103 opens the grippers 108 and allows the plate to drop on to the chain k which is intermittently driven by a pawl 118 operated from the platen-lever a. In some cases, the address-plate inking mechanism may be dispensed with, and an ink ribbon may be passed over the part of the forme where the plates will project, but at a lower level, so that the inking-rollers for the fixed type, supported at this part by bearers, do not touch the ribbon.