Patent GB-314548-A (GB)
Abstract: 314,548. Deurrieux. A., pomaredes, J., and Perret, L. June 29, 1928, [Convention date]. Totalizators.-In a totalizator, such for example as that described in Specification 294,181, a pool totalizer and indicator is provided comprising banks of lamps selectively illuminated under the control of rotating brushes adapted to wipe over contacts connected with the horse counters. Leads from the various horse indicators are connected to contacts 220, Fig. 9, swept by searching brushes 221, and arranged in series of ten with a blank contact d separating the successive series. Thus the leads 228a are from the thousands lamps belonging to horse No. 1 and the leads 228b are from the hundreds lamps of the same horse. To bring the various series of contacts into action seriatim the brush shafts are geared 1 : 3 with commutator switches S connected with the relays 236. Assuming the 7 contact in the tens series of horse No. 1 to be live, the brush shaft in moving from the 0 position, sends by means of a contact make-and-break R seven impulses through contacts 234 and lead 235 to commutator 229 in the tens denomination of the pool totalizer. When the brush reaches the 7 contact the relay 236 is energized to break the circuit at 234 and thus leave the brush of commutator 229 on its 7 contact with the resulting illumination of the 7 lamp in the tens row VII. When the brush 221 finally reaches the contact d separating adjacent groups of contacts a magnet 238 is energized to break a contact at 237 and so cause de-energization of relay 236. The brush 221 then continuing its journey sweeps the group of No. 2 horse and if it finds a live contact, say at the 5 position, the five further steps of the commutator 229 thus produced, bring the brush 231 to the 2 position. Moreover in its passage over contacts 9 and 0, a slow relay 241 is energized and completes a circuit through line 243 to relay 244 of the hundreds searching brushes. If the relay 236 of this set is energized the impulse thus received passes to the commutator 229 for the hundreds. If the relay 236 has not yet been energized the transfer impulse is stored by impulse 244 until the searching brush reaches the marked contact. The pool totalizer is only put in action when the horse indicators are stopped and the following means are provided for ensuring only one journey at a time of the brushes 221 over their banks of contacts. Referring to Fig. 11, a motor 248 is geared with a serrated disc 250 facing a similar disc 251 slidable axially on the brush shaft 222. When a switch 258 is closed the magnet 254 forces the disc 251 into gear with disc 250 and closes circuit to the motor. As soon as the brushes commence their journey a contact 260 is closed to maintain the magnet energized and is broken only when the journey has been completed. The disc 251 is then free to slide to the right into engagement with a fixed serrated member 257, and so lock the brush shaft stationary. A numeral indicator similar to that described below may be combined with the pool totalizer, and a zeroizing-key may be adapted to break the transfer circuits and complete self-interrupting circuits for the magnets 229 until these circuits are broken on attainment of the zero positions. The lamps of the hundreds of thousands bank of the pool indicator are connected as shown in Fig. 9 to four banks of contacts grouped in tens and swept by two pairs of brushes rigid with the pair for the tens of thousands bank, thus dispensing with a transfer relay 241 between the two denominations; a commutator switch 274, ensures the correct sequence of introduction of the groups of contacts. Commutator switches S. These may be constructed as shown in Figs. 1 and 2. The shaft 109<1>, is geared with a shaft 171 carrying a number of insulating discs 169 covered, except as to one-half of their periphery, with a metallic envelope 170. Brushes 172, 173, Fig. 2, cooperate with the discs and their envelopes so as to pass current at the requisite time. Numeral drum indicators. There may be one of these for each horse indicator and also for the pool indicator. The lamps of the indicator board are connected with contacts 201, Fig. 8, swept by a brush 206 in circuit through a key switch 210 with a magnet. 211. When a lamp is lit therefore and the brush 206 reaches the corresponding contact the magnet is energized and displaces a numeral drum 212, Fig. 4, to the left. The drum is slidably mounted on the shaft 205 of the brush and is normally forced by a spring 221 against a bevelled member 220 so as to rotate with the shaft, but when slid to the left it engages by means of teeth 213<1> with stationary teeth 218, and is thus locked in a position corresponding with the live contact. When used for a horse indicator an auxiliary circle of contacts 203, swept by a second brush 206, may be provided. These contacts are then wired with the contacts 220, Fig. 9, and the arrangement may be such that by operating the key 210 the drum is held stationary and the pool may then be brought up-to-date without stopping the luminous horse indicator or the betting. The Specification as open to inspection under Sect. 91 (3) (a) also contained the subject-matter of Specification 338,994. This subject-matter does not appear in the Specification as accepted.