Patent GB-387231-A (GB)
Title: Improvements in or relating to address-printing machines
IPC: B41L47/58
Filed: 1932-07-01
Abstract: 387,231. Printing-machines. ADREMA MASCHINENBAUGES. 62, Alt Moabit, Berlin. July 1, 1932, No. 18695. Convention date, July 4, 1931. [Class 100 (ii).] Addressing-machines; tripping-arrangements. -In an addressing-machine wherein selection is effected electrically by means of control cards, a card having a number of control positions is provided for each printing-device, the cards being fed in succession past a cardreading device provided with a corresponding number of contact positions. The machine shown is of the kind wherein the movement into operative position of a platen 9, Fig. 1, carried by a rocking arm 10, is controlled by a lever 16 arrested by the armature 15 of an electromagnet 14 whenever printing is required. Control cards 18 are fed from a magazine 17 to a card-reading device B by a pusher 22 connected to a lever 7 which reciprocates an address-plate pusher 5 ; at each upward stroke of the arm 10, an address-plate and the corresponding card move simultaneously into printing and reading positions respectively. Each card 18 has three rows of control positions and is perforated in the appropriate positions. The device B comprises an insulated plate 28 arranged above the card-track and provided with three rows of perforations adapted to receive brushes 27, and a contact plate 25 below the track. A plug 50 connected to each brush is inserted in a conductor 29 connected to the positive terminal of a battery, the negative being connected through a switch 36 and the magnet 14 to the plate 25, so that the magnet is energized each time a brush passes through a perforation in a card. The selected plates may be skipped instead of printed, by adapting the brush circuit to control a switch in the circuit of a normallyenergized magnet. The switch 36 is normally open and is closed at each downward stroke of the arm 10 by a catch 38 carried by the pusher 22 ; alternatively, the plate 28 may be reciprocated vertically to close the magnet circuit, the switch being omitted. In a modification adapted for selecting only those plates comprising a combination of characteristics, the brush circuits are arranged in series by replacing the block 25 by an insulated block provided with sockets connected each to a socket in a switchboard, and inserting the plugs 50 in sockets in a second switchboard, the sockets being connected together and to the magnet and battery so as to complete the circuit only when all the brushes of the combination pass through perforations in a control card. The modification also permits of a parallel-circuit arrangement as before. The co-ordination of the addressplates and control cards is checked at intervals by providing a projection, a hole, or, as shown, a tab 63, Fig. 6, on, say, every tenth plate, and a perforation 21 in every tenth card. A feeler 64 oscillated by a rod 66 connected to the arm 10, is arrested by the tab so that a switch 69 is closed, whereby a magnet 73 is energized and an armature 80 is attracted. Simultaneously a brush 62 passes through the perforation 21 and completes the circuit to a magnet 76 also attracting the armature 80, which therefore remains in a neutral position. If either magnet is not energized, the armature 80 moves towards the other one and closes the circuit to a magnet 84 adapted to open a switch 93, whereby an optical or aural signal is given ; alternatively, a magnet 89 may be de-energized so as to release a catch 90 whereby a rod 92 is lifted to stop the machine. Specification 377,868 is referred to.