Patent GB-260636-A (GB)
Title: Improvements in or relating to addressing and similar printing machines
IPC: B41L45/00
Filed: 1926-11-02
Abstract: 260,636. Adrema Maschinenbauges. Nov. 2, 1925, [Convention date]. Addressing and like machines.-Relates to addressing and similar printing-machines of the kind wherein printing-plates 2 taken from a hopper are advanced in succession by means of a reciprocating block d along a track c to printing position below a platen carried by a working lever a and comprises an improved arrangement for locking the blocks d against movement when repeated impressions are required from a selected plate, this arrangement being provided in conjunction with a number-printing device and means for skipping plates from which no impression is required. Printing repeatedly from one address-plate. The block d is reciprocated by a pivoted lever g oscillated from the lever a, and, to prevent the advances of the plates 2 while two or more impressions are made from the plate in printing position, a stop 4' on a plate 4, Fig. 4, pivotally mounted on a shaft 3 below the bed plate e of the machine is moved into the path of a pin h on the end of the lever g. The plate 4 is normally urged into the locking position by a counterweight 4<11> acting in conjunction with a spring 6 on the shaft 3. A parallel shaft 7 carries at one end a ratchet 8 and at the other a member 9 consisting of a cylinder 9<1> and a series of stepped cams 10 - - 12. An arm 15 is moved by hand on to a step corresponding to the number of impressions desired from a particular addressplate, and gradually moves on to the high part of the member 9 as this rotates, the plate 4 being thereby moved about its pivot 3 until the lever g is released so that plate-feeding commences again. The ratchet 8 is turned to rotate the member 9 by ,a pawl on a lever 23, Figs. 1 and 3, actuated from the lever a, reverse rotation being prevented by a second pawl 27 also connected to the lever a. The plate 4 in swinging into the inoperative position raises the lever 23, thereby releasing the ratchet 8 and allowing the shaft 7 and member 9 to be turned back into the initial position by a spring 13. The arm 15 may also be moved to the right beyond the member 9 to allow of an unlimited number of impressions, or on to the part 9<1> when no repeats are required. The main platen 39 is held in the printing position for the required number of impressions by means of & spring-pressed lever which holds up a catch on the armature 35 of an electromagnet 36. which is controlled by the address-plates. Skipping plates from which no impresion is required. When such a plate arrives at the printing position, the electromagnet 36, Figs. 1 and 3, is not energized, its armature 35 is not attracted and, consequently, a bolt 33. Fig. 4, instead of being withdrawn, remains in the path of a pivoted lever 18 forming an extension of the plate 4 and prevents the plate from moving into the locking position, the result being that another plate is advanced without delay. Tripping-arrangements. - Two plates 39, 40, Fig, 3, coacting respectively with an addressplate 2 and a number-printing device 41 are moved into operative positions by cams 42, 43 actuated bv parallel arms 44, 45 connected by a disengageable link 46 and controlled by the electromagnet 36 through mechanism which is not described. Number-printing apparatus.-A spring-pressed pin 50. Fig. 8, arranged alongside the platen 40 acts on the striker pin 51 of the device 41 each time the platen 40 is depressed while in the operative position. When repeat impressions are printed, however, a stop 52 on a pivoted arm 53, Fig. 1, is moved under the pin 51 by means of a link 55 connected to the lever g, thus preventing advance of the numbering.mechanism so that the same number is printed with each repeated address. A hand-actuated cam 57 allows the numbering-mechanism to be put out of action if required.