Patent GB-216304-A (GB)
Title: Improvements in or relating to coin-operated turnstile mechanism
IPC: G07F17/14
Filed: 1923-04-26
Abstract: 216,304. Thomas, J. P., and London Electric Railway Co. April 26, 1923. Addition to 198,135. Turnstiles.-The mechanism described in the parent Specification in which passenger-counting mechanism that received lock-releasing impulses from a coin-operated machine and transmitted them to the lock of the turnstile and also permitted passengers up to a predetermined number to accumulate between the coin-operated machine and the turnstile is modified to enable more than one coin-operated machine to be used with the same passenger-counting mechanism and turnstile. Three coin-operated machines 217 - - 219, preferably ticket-vending machines for differently-priced tickets, are shown coupled to the passenger-counting mechanism for the turnstile 17. The machines are adapted to operate energizing solenoids 220 - - 222 respectively, these solenoids being connected by coupling and clearing solenoids 223, 224, and arranged to energize a solenoid 225 by which impulses are despatched to the solenoid 74 of the passengercounting mechanism. This mechanism is practically similar to that described in the parent Specification but three extra solenoids 226 - - 228 are added to provide for the contingency of two of the ticket-vending machines being simultaneously operated when the number of passengers accumulated between the ticket-vending machines is only one below the nominal maximum. In operation, if a coin be inserted in the machine 217 the solenoids 220, 223 are energized and holding circuits established through the switches 234, 276 respectively; switch 235 also closes the circuit of the solenoid 225 thus causing the passenger - counting and turnstile - operating mechanism to be actuated by the solenoid 74; the solenoid 225 also, however, closes switch 288 thus short-circuiting the holding circuit for the solenoid 220 through the switch 236; the switches of this solenoid fall breaking the circuit for the solenoid 225 and so shortening the circuit for solenoid 223 through switch 288, lower contact 280 and switch 278. The other machines, when operated independently, cause impulses to be transmitted to the solenoid 74 similarly. Should the three machines be simultaneously operated all the solenoids 220 - - 224 are energized and their holding circuits established; the solenoid 220 first causes the solenoid 225 to send an impulse to the solenoid 74 and then the solenoids 220, 223 are shorted as above described. Solenoid 225, however, is again energized by a current through switches 252, 246 and 235, thus sending a second impulse to the solenoid 74, the solenoids 221 and 224 then being short-circuited and providing for a final actuation of the solenoid 225 by a circuit through switches 269, 261, 252, 246, and 235. This actuation in addition to sending a third impulse to the solenoid 74 closes the short-circuit for the solenoid 222 and so brings all the solenoids to their normal de-energized position. When the first impulse reaches the solenoid 74 a circuit is completed through switches 91, 207, 94, 90, 100, and the windings of solenoids 78, 79; these solenoids form holding circuits through switches 148, 156 and a circuit through the turnstile solenoid 21 is completed through switch 150. On the de-energization of solenoid 74 a circuit through switches 89 and 98 that normallv short-circuits the solenoid 77 is broken and the switches operated by the solenoid 77 are raised. If the second impulse is received by the solenoid 74 before the first passenger has passed through the turnstile a circuit is completed through switches 91, 207, 94, 90, 100, 144 and the windings of the next pair of solenoids 81, 82; these operate in the same way as solenoids 78, 79, and when the impulse through 74 ceases the solenoid 80 is energized by the breaking of the shorting circuit through switches 89, 98 and 139. The third impulse before operation of the turnstile energizes solenoids 83, 227 and 226, and should a fourth passenger also take a ticket simultaneously with the third the solenoid 228 is brought into action. On the third ticket being taken the coin slots 11 in the machine are closed by the circuits through the shutter solenoids 13 being broken at switch 196 of solenoid 83, the warning sign 14 being simultaneously shown. When the first passenger passes through the turnstile the switch 214 is first opened, de-energizing solenoid 84. and the holding circuit through solenoid 228 is shunted bv a circuit through switches 315 and 206. On the completion of the movement of the turnstile solenoid 84 is energized again and solenoid 227 shunted through switches 306, 307 and 205 and released. The passage of the second person through the turnstile similarly causes solenoids 83, 226 and 82 to be released, the warning sign at the ticket-vending machines being withdrawn and the coin slots opened again. The third and the fourth passengers on being cleared by the turnstile cause the release of solenoids 81, 80 and 79, and 78 and 77 respectively.