Patent GB-399923-A (GB)
Title: Improvements in or relating to address-printing machines
IPC: B41L45/00
Filed: 1932-05-27
Abstract: 399,923. Printing - machines. ADREMA MASCHINENBAUGES. 62, Alt-Moabit, Berlin. May 27, 1932, No. 15138. Convention date, May 29, 1931. [Class 100 (ii).] Addressing - machines ; tripping- arrangements; number-printing apparatus.-In an addressing-machine wherein printing-plates or stencils are fed longitudinally to printing position beneath a platen carried by a rocking arm, and in which the prints are numbered, an impression pad is provided on a bridge extending across the plate-track, and a numbering-device is mounted above the bridge and on the platen arm, so that a number may be printed on the portion of a sheet &.c. which is above the bridge, and alongside of the address. The machine shown is of known type, comprising a track for address-plates 5<1>, and an arm 2 rocking about a pivot 3 and carrying a platen 4 adapted to be protruded into printing position on the descent of the arm 2 whenever an electromagnet 17 is energized and attracts an armature 16 adapted to arrest a lever 14 linked to a cam lever 9 controlling the movement of the platen. A numbering-device 20 co-operating with an impression pad 28, inset in a bridge 29 extending across the track, is mounted on the arm 2, and the wheels are advanced by engagement with a fixed member each time the arm 2 descends, or, as shown, each time the lever 14 is arrested, by the movement of a slide 22 connected to the lever by a rod 23. The device 20 is rocked about a pivot 21 into an inoperative position whenever a lever 30 rocking about the pivot 3 is arrested by means of a pawl 32 pivoted at 48 to the armature 16, the lever 30 being connected by a link 33 to a crank 34 on the pivot 21. The device 20 is locked in operative position by a catch 38 engaging the crank pin, the catch being released by a tooth on the link 33 prior to movement of the device into inoperative position. A number is printed except when a plate is skipped or when a plate other than an address-plate, e.g. a district plate, arrives in printing position. In the former case, the armature 16 is not attracted and the pawl 32 falls by gravity into a low position where it misses a recess 31 in the lever 30 and consequently arrests the lever. In the latter case, a lever 50 engages the rear end 32<1> of the pawl 32 and raises it into a high position where the lever 30 is again arrested ; the lever 50 is connected by a Bowden cable 52 to a feeler 53 urged towards the address-plate track and moving inwardly whenever a notched plate 5<11> arrives in printing position. A latch 57 retains the pawl 32 in either position of adjustment. In a modification, Figs. 10 and 11 (not shown), the lever 30 is dispensed with, the link 23 is replaced by a link, which is slotted to engage the pin on the slide 22 and is connected at the other end to a stationary upright, and the numbering-device is moved into and out of operation by connection with an arm actuated from the arm.14. In a further modification, Fig. 12 (not shown), the link replacing the link 23 is connected to a pivoted arm normally held stationary by a catch, which is released when the printing- device feed is interrupted to provide repeat printing, whereby the arm rocks with the arm 14, the number wheels are not advanced, and the same number is repeated. A separate ink-ribbon may be provided for the numbering- device, or a wide ribbon may cover both the device and the plate. Counting-apparatus.-The crank 45 of a counter 46, Fig. 1, mounted on the addressplate magazine is actuated by connection with the lever 30. The counter is only advanced when the numbering-device is in the operative position, since, otherwise, the crank 45 does not descend far enough to turn the wheels.