Patent GB-330264-A (GB)
Abstract: 330,264. Webb, C. F., and Black, H. D. March 4, 1929. Totalizators.-Relates to ticket printing and issuing machines more particularly for use with totalizators wherein each of a bank of keys is adapted to select for operation one of a series of impression elements carried on a printing cylinder as set out in Specification 325,873, [Class 106 (iii), Fares &c.], and consists in providing means arranged remote from the machine and operable to render a key or keys carried by the machine effective. Each key 1 of the bank of keys is maintained out of engagement with a corresponding insulated spring blade 4 by a spring 2<1>. Each blade 4 is connected to a corresponding terminal 5 on a panel 6, each terminal 5 being connected in turn to a terminal at a central station there being a common return lead for all outgoing leads connected to a terminal 7 which is connected to an insulated spring blade 8, a contact 9 on which engages a contact 13 normally, but contact may be broken by engagement of the tappet 10 by a cam 11 on the spindle 12 of the printing cylinder (not shown) which spindle is given a complete rotation upon each operation of the machine. The contact 13 is connected to one terminal of an electromagnet 14 the other being connected to the frame with which the keys 1 also contact electrically. The pivoted armature 15 is normally held against a stop 18 by a spring 17. A spring 35 pulls a pivoted arm 20 to engage normally the end 19 of the armature 15. The arm 20 is mounted on a spindle 27 which is connected by a stirrup 37 to a bar 28 moving in a slot in the frame, the stirrup having an arm 38 arranged to be actuated by a cam 39 on the spindle 12. The bar 28 is connected by links 29, 30 respectively to a universal clutch bar 31 engaging stops 33, and to a locking bar 32. The bar 31 is connected by a rod 8<1> to the blade 8. If a key 1 is depressed, assuming all the electrical circuits associated with the key bank closed, the clutch bar 31 is moved from' the stops 33 and a contact blade engaged to establish the circuit of the magnet 14 via switch 43, 45, Fig. 7, and contact 9, 13. The armature 15 is then pulled down, and bars 28, 31, 32 move to the right locking the depressed key. Also the clutch 22 is released so that the shaft 12 is clutched to a sprocket wheel 24 driven by a motor 26 the circuit of which is established as described in Specification 325,873, [Class 106 (iii), Fares &c.]. The shaft 12 is rotated and the machine is operated to print and issue a ticket. During the rotation of the shaft 12, the cam 11 actuates the tappet 10 and breaks the magnet circuit. In the later stage of rotation a cam 39 depresses the arm 38 and inner bars 28, 31, 30 to allow the depressed key to return. The armature is returned by its spring 17. On completion of the rotation of the shaft 12, the cam 39 releases the arm 38 and the universal clutch bar resumes the position shown in Fig. 4. Fig. 7 shows the circuits for a control station B and two ticket issuing machines A. The blades 4 are connected by a line 40 to one terminal of a series of relays 41 each arranged to operate one of a series of counters C. The other terminals of the relays 41 are connected in parallel to the blade 42 which are each connected to one terminal of a corresponding switch 43 the others being connected by a common return 44. Specification 255,358 is also referred to in the Provisional Specification.