US2082561A - Paystation telephone system - Google Patents

Paystation telephone system Download PDF

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Publication number
US2082561A
US2082561A US63707A US6370736A US2082561A US 2082561 A US2082561 A US 2082561A US 63707 A US63707 A US 63707A US 6370736 A US6370736 A US 6370736A US 2082561 A US2082561 A US 2082561A
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United States
Prior art keywords
contact
relay
fee
switch
selector
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US63707A
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English (en)
Inventor
Appelius Fritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telephon Apparat Fabrik E Zwietusch and Co
Original Assignee
Telephon Apparat Fabrik E Zwietusch and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Telephon Apparat Fabrik E Zwietusch and Co filed Critical Telephon Apparat Fabrik E Zwietusch and Co
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Publication of US2082561A publication Critical patent/US2082561A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Definitions

  • the invention relates to a circuit arrangement for pay stations adapted for short distance working, As is known in such pay stations the fee according to the call number which is to be dialled must be inserted before beginning to dial.
  • the control as to whether the fee inserted corresponds to the value of the call set up, can beqeifected either in the paystation or by switching devices in the exchange.
  • the present invention relates to a circuit arrangement in which fee control takes place in the exchange.
  • the control device in the exchange consists fundamentally of a discriminating switch to be set up by the dialled impulses, and a switch which is set by fee impulses whose setting must correspond with the setting of the discriminating switch if the call is to be switched through.
  • the setting of the switch which is set by the fee impulses involves no difiiculties if the setting is to be efiected by fee impulses of one kind.
  • the pay station apparatus In order to make the pay station more convenient to use it must be able to be operated by coins of various values.
  • the switching arrangements may be such that it can be left to the subscriber to decide when to insert the coins, i. e. either before or after removing the receiver.
  • the switching arrangements must be such that the impulses produced by the operation of the fee impulse contacts on the insertion of coins, and also the audible signals produced by the insertion of coins, are not distorted in their transmission to the exchange. Crackling noises produced by the opening and closing of the fee impulse contacts must also be kept at a minimum.
  • the invention makes use of an auxiliary selector which first takes up the complementary steps of the one feed selector and transmits its complementary steps to the totalling switch and at the same time converts the fee value taken up from the fee selector into units while simultaneously subtracting the setting of the other fee selector which is produced by the simultaneous energization of both fee impulse relays, by means of a corresponding wiring of the contacts of the auxiliary selector to those of the totalling switch.
  • the transmission of the setting of the other fee selector takes place similarly by means of the auxiliary selector in that the auxiliary selector again takes up the complementary steps in this second fee selector and then transmits its complementary steps to the totalling switch.
  • Fig. 1 represents switching arrangements in the pay station and- Fig. 2 those in the exchange.
  • the references in Fig. l have the following significance:.
  • lI-IU and 2HU are the contacts which are operated by the switch hook.
  • nsa is the dial ofinormal contact.
  • nsi is the dial impulse contact.
  • the collecting magnet is indicated by KM and on energizing it directs the coins which are in an intermediate container into the collecting box.
  • SM is a locking magnet which efiects the return of the coins present in the intermediate container on hanging up the receiver in dependence upon the switching operation in the ex change.
  • W2 is a resistance.
  • Dr is a choke coil.
  • the speech microphone is indicated by Ms and the gong microphone by Mk.
  • F is the receiver and In an induction coil.
  • Fig. 2 the contacts of the relays are indicated by corresponding small letters and are differentiated by prefixed arabic numerals.
  • the wipers of the selectors are differentiated by roman numerals.
  • the rotary magnets of the selectors are given references consisting of several letters of which the first is D and the remaining letters corresponding to the switch wipers controlled by the magnets.
  • Relay X50 does not receive sufiicient current to energize.
  • Rotary magnet DWIO is energized over the contact Iazl0.
  • 0 drives the wipers of the fee selector W10 forward by one step.
  • This selector Wl0 has three wipers Wl0I, WIUII, WIO'III and possesses 35 steps 1-35 and one resting step 1'.
  • 0 is set to step 22.
  • the 50 pig. piece relays Xl0 and X50 are energized.
  • the rotary magnet DW50 is energized over contact Iw50.
  • the fee selector W50 possesses three wipers W50IW50III. The number of steps amount to 11 and one resting step T. On the insertion of the 50 pfg. pieces the fee selector WI 0 is also displaced by one step through the energizing of relay Xl0. After the insertion of the amount of 2.70 marks the fee selector Will is thus standing on step 23 according to the present example and the fee selector W50 on step l. On taking up the receiver contact IHU is closed so that relay A pulls up in the following circuit:
  • a free group selector is seized.
  • rotary magnet DVW of the preselector is started up in the known manner.
  • relay T energizes and by means of contact It disconnects the rotary magnet DVW from the relay interrupter RU.
  • the feeding relays AG and BG in the group selector GW remain energized over contact la.
  • the slow-to-release relay V is energized.
  • relay VI is slow-to-release relay D energizes over its winding DI in the following circuit:
  • Relay D locks up over its winding DII over circuit.
  • Relay E serves as feeding relay for the microphone Ms and possesses two windings EI and E11. Microphone feeding over relays Xl0 and X50 would be unpractical since on account of the necessary high resistance of these relays lthe microphone feeding current would be too small. As soon as the impulse contact 1281 again closes relay E energizes.
  • the rotary magnet DMW of the discriminating switch MW energizes over contact 3e.
  • the discriminating switch MW has three wipers MWI-III and possesses 20 contacts and one resting contact T. On dialling the characterizing digit 0 the discriminating switch MW is set on contact 0. On commencing to dial, an operation which is conveniently characterized by the energizing of relay D, the control switch is displaced from position 0 to position 1.
  • the wipers of the control switch are represented in the usual way by roman numerals in combination with arabic numerals. The arabic numerals indicate the position of the control switch.
  • the rotary magnet of the control switch is indicated by DST. On the first setting impulse the rotary magnet DST is energized in the following circuit:
  • the auxiliary selector I-IW When the fee selector W50 has reached the rest position r the auxiliary selector I-IW is standing on contact 10 i. e. 1l--l.
  • the contacts which are brushed by wiper I-IWI are wired to the contacts of the totalling switch SW which are brushed by wiper SWI, in such a manner that contact 11 of HW is connected to contact 0 of SW1, contact 10 of HW is connected to contact 4 of SWI, contact 9 of HW is connected to contact 8 of SWI and so on.
  • the fee recorded in selector W50 is converted into 10 pfg. units, while at the same time the value transmitted to the fee selector Will, produced by the simultaneous energizing of XID and X50 when contact g5ll is closed, is subtracted.
  • the setting of the totalling switch SW is effected independently of the further operation of the selecting devices. As soon, therefore, as
  • testing can take place as to whether the setting of the discriminating switch MW corresponds with the setting of the totalling switch SW.
  • the discriminating switch MW was displaced.
  • the impulse transmission relay V2 energizes in the following circuit:
  • Relay V2 is slow-to-release. Accordingly at the end of the first impulse train relay RI pulls up.
  • relay R2 On transmitting the second impulse train relay R2 energizes on account of the slow-to-release feature of relay RI.
  • Relay R2 locks up over its contact I12 and the contact 273 and 1d. After the totalling switch SW had been set on the contact corresponding to the total fee paid in, the control switch was advanced to position 6.
  • the rotary magnet DST was energized in the following circuit:
  • Relay TR locks up over contact Itr and 4d.
  • the connection set up is cut off by means of contact Ztr since the control relays AG and BG of the group selector deenergize. If the correct fee has been introduced the energizing of relay TR is prevented by contact If.
  • the rotary magnet DST of the control switch is again energized through contact 3T3 as soon as relay R2 has deenergized, the locking circuit of this relay being broken by contact 21-3.
  • the collecting magnet KM is connected tothe a-lead and by means of contact (ism the high resistance winding SMII of -magnet SM is connected up. so that relay E canno longer remain energized. As soon as relay E has released relay KR is energized provided that the called subscriber has replied.
  • Relay KR locks up over its own contact 2hr and contact p.
  • the collecting magnet KM and relay P energize over contact llcr.
  • Contact p breaks the locking circuit for relay KR.
  • Relay KM causes the inserted fee to: be collected. If the subscriber has not replied the energizing of relay KR'is delayed. 'When the connection is released the control switch is advanced from position 7 to position 8 as already explained. The control switch is advanced into its rest position over wiper I and contacts 8 and 9. (31) Earth-RU--I-8, 9-DST-battery. If the auxiliary selector I-IW is not yet in the rest position it is advanced to the zero position over 1110 and HWIII. In the same way the totalling switch SW, the discriminating switch MW and the fee selectors Wlll and W50 are advanced to the rest contact 1'.
  • relay A If the calling party takes up his receiver before inserting the fee relay A energizes. This has the same efiect asthat already described. If the contacts glll and 950 are closed when the receiver has, already beenremoved this has no influence on the energizing of relay A because the ratio of the resistances in the branch circuits thus established is so chosen that relay A receives suflicient energizing current. It may be mentioned that by the use of a corresponding call finder circuit it is possible to use the discriminating switch HM, the totaling switch SW, the auxiliary selector HW and the control switch SW in common for a larger number of I pay stations, .since these switching devices are only transitorily operative during the setting up of a call. It is also possible to use the setting of the totalizing selector to set control meters associated with the paystation.
  • the fee impulse contacts glll and g50 are constructed as successively closing contacts of which one contact spring which is arranged next to the operating spring is connected to an earth condenser KI.
  • the asymmetry in the line produced by the operation of relay A in series with windings II of the fee impulse relays Klll and X50 is equalized by the condenser K2.
  • the digits 00 relay G is energized over MWII and by opening its contact lg prevents the energizing of relay M when the called party replies. In this case the energizing of the collecting relay KR is also prevented when the receiver is replaced. Contact 29 prevents the energizing of relay TR so that no disconnection is brought about by the fee testing.
  • a paystation telephone connected by a line to the exchange, a calling device for transmitting impulses to the exchange to extend a connection to a desired subscriber, a discriminating switch also responsive to said calling device impulses, coin operated contacts at said paystation, a different resistance connected to said line by each of said contacts responsive to the passage of corresponding coins in said paystation, coin relays in said line each responsive to the connection of a particular resistance to said line, coin switches at said exchange each operated by an associated coin relay, and means for permitting the extension of the call only in the event that the positions to which said discriminating switch and said coin switches are operated correspond to the value and destination of the call.
  • a paystation telephone connected over a line to the exchange, a calling device at said paystation for transmitting impulses over the line in series to the exchange in order to establish a connection with another subscriber, coin contacts at said paystation operated by the passage of coins thereat, a difierent resistance connected to ground potential through each of said coin contacts by the passage of the coins in order to transmit coin impulses over one side of the line, a differential coin relay for each of said coin contacts and each relay having a different energizing characteristic, an impulse relay responsive only to dial impulses transmitted in series over the line, a discriminiating switch operated by said impulse relay, a coin switch operated by each of said differential coin relays, and means whereby a connection is extended to a desired subscriber only in case the discriminating switch and the coin switches are set to positions corresponding to the particular fee required and the impulse series associated with the location of the wanted subscriber.
  • a totalling switch is provided to add the fee sum of the settings of the coin switches in order to determine whether the connection to the wanted subscriber is to be extended.
  • an auxiliary switch and a totalling switch at said exchange said auxiliary switch automatically operated to a position corresponding to the position of one of said coin switches and then the other, said totalling switch thereby operated to the position assumed by said auxiliary switch, said totalling switch converting the coin values into unit coin values from the first of said coin switches and subtracting the values of the setting of the other of said coin switches therefrom, the bank contacts of said auxiliary switch and said totalling switch being correspondingly wired together to efiect the conversion value.
  • an auxiliary switch and a totalling switch said auxiliary switch first operated to transmit the setting of one of said coin switches to said totalling switch and then releasing, then operated to the position of the other coin switch and transmitting the setting of said coin switch to said totalling switch during the release of the auxiliary switch.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
  • Meter Arrangements (AREA)
US63707A 1935-02-21 1936-02-13 Paystation telephone system Expired - Lifetime US2082561A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE447106X 1935-02-21

Publications (1)

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US2082561A true US2082561A (en) 1937-06-01

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US63707A Expired - Lifetime US2082561A (en) 1935-02-21 1936-02-13 Paystation telephone system

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US (1) US2082561A (en(2012))
FR (1) FR799372A (en(2012))
GB (1) GB447106A (en(2012))
NL (2) NL43570C (en(2012))

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623950A (en) * 1947-09-15 1952-12-30 Telefon Fabrik Automatic As Deposit-controlled timing system for telephony
US2663398A (en) * 1946-10-14 1953-12-22 Punch Engineering Pty Ltd Article vending system
US2684998A (en) * 1951-01-15 1954-07-27 Sodeco Compteurs De Geneve Prepayment apparatus for telephone calls
US2761900A (en) * 1952-07-17 1956-09-04 Bell Telephone Labor Inc Telephone system of the coin controlled type
US2769023A (en) * 1950-01-19 1956-10-30 Internat Telemeter Corp Prepaid entertainment distribution system
US2769026A (en) * 1951-05-10 1956-10-30 Internat Telemeter Corp Prepaid entertainment distribution system
US2839173A (en) * 1950-01-19 1958-06-17 Internat Telemeter Corp Prepaid entertainment distribution system
US2843655A (en) * 1951-12-03 1958-07-15 Internat Telemeter Corp Subscription television with scrambled transmission and marquee and barker
US2843654A (en) * 1951-12-01 1958-07-15 Internat Telemeter Corp Subscription television system using land line
US2848542A (en) * 1954-02-17 1958-08-19 Ericsson Telefon Ab L M Coin boxes
US2881254A (en) * 1953-04-27 1959-04-07 Gen Telephone Lab Inc Postpay paystation with coin control circuit
US3069502A (en) * 1957-11-06 1962-12-18 Ericsson Telefon Ab L M Coin identification and signalling telephone device
US3116370A (en) * 1959-05-05 1963-12-31 Bell Telephone Labor Inc Telephone pay station

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663398A (en) * 1946-10-14 1953-12-22 Punch Engineering Pty Ltd Article vending system
US2623950A (en) * 1947-09-15 1952-12-30 Telefon Fabrik Automatic As Deposit-controlled timing system for telephony
US2769023A (en) * 1950-01-19 1956-10-30 Internat Telemeter Corp Prepaid entertainment distribution system
US2839173A (en) * 1950-01-19 1958-06-17 Internat Telemeter Corp Prepaid entertainment distribution system
US2684998A (en) * 1951-01-15 1954-07-27 Sodeco Compteurs De Geneve Prepayment apparatus for telephone calls
US2769026A (en) * 1951-05-10 1956-10-30 Internat Telemeter Corp Prepaid entertainment distribution system
US2843654A (en) * 1951-12-01 1958-07-15 Internat Telemeter Corp Subscription television system using land line
US2843655A (en) * 1951-12-03 1958-07-15 Internat Telemeter Corp Subscription television with scrambled transmission and marquee and barker
US2761900A (en) * 1952-07-17 1956-09-04 Bell Telephone Labor Inc Telephone system of the coin controlled type
US2881254A (en) * 1953-04-27 1959-04-07 Gen Telephone Lab Inc Postpay paystation with coin control circuit
US2848542A (en) * 1954-02-17 1958-08-19 Ericsson Telefon Ab L M Coin boxes
US3069502A (en) * 1957-11-06 1962-12-18 Ericsson Telefon Ab L M Coin identification and signalling telephone device
US3116370A (en) * 1959-05-05 1963-12-31 Bell Telephone Labor Inc Telephone pay station

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Publication number Publication date
NL44937C (en(2012))
GB447106A (en) 1936-05-12
FR799372A (fr) 1936-06-11
NL43570C (en(2012))

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