DE881680C - Circuit arrangement of coin operated telephones for self-dialing long-distance traffic - Google Patents

Description

Circuit arrangement of coin operated telephones for self-dialing long-distance traffic The 853.168 patent relates to a payphone in which the cash register : the low-value: n coin-causing cashier magnet in the individual 'coin types assigned memory channels drives coin sensor contacts, which drives the drive magnets of the cashier's organs for the high-quality coins and so connected in series are, @ that the 'coins are cashed in the order of their value and if there are no coins in the storage channels a .the connection blocking Relay becomes effective. The drive magnets for the insulation elements of the high-quality Coins each operate a switching mechanism with a cam wheel, through whose cams contacts are operated, which are connected to the cashier line that the cashier magnet on -, the work steps of the nock wheels, is separated and the following counting current surges act on the drive magnet of the relevant switching mechanism.

In the '853,468 patent, the pay phone magnets are through operated by an external power source, or a special one becomes the telephone exchange leading cashier line used.

The present invention is a further development of the main patent and aims to use the energy required to drive the payphone only the power sources available in the telephone exchange via the speech wires of the To remove connecting cable. This is achieved in that the control magnets the cashier's organs and the coin value determination for the different values Coins directly. by the cashier flow running through the speech lines one after the other depending on the presence of coins in the relevant storage channels operated in the order of the coin values. Instead of the one big magnet from Massien Major patents that have many functions to perform are in the present invention several control magnets are provided, each of which controls only a single process and can therefore be made structurally simple.

Since in the circuit arrangement according to the invention, the cashier devices must be switched on one after the other for the individual coin values is sufficient the energy available for Iden cashier impulse completely to a to ensure safe actuation of the control magnets, so (that both special External power sources at the call stations, as well as special cables for operation the pay phone can be saved.

In: the drawings are exemplary embodiments for the circuit of a Pay phone according to the invention and for the structural design of the for Cashing of the coins and the devices required to control the coin sensing contacts shown.

Fit. i shows the circuit of the intercom and the generation the circuits serving the cashier impulses. of the telephone exchange; in Fig. 2 are different Constructive training of the cashier and control devices illustrated schematically.

As in the main patent, the coin operated telephone is intended to receive and offset io-P @ fennig, 5o-pfennig and i-mark pieces. After passing through a coin checking device, the preparatory coins to be inserted arrive in storage channels arranged separately for each type of coin, from which they are cashed or returned. The arrangement of these channels can be done in the same way as in the main patent. The electromagnets used for collecting the coins and for counting the payment impulses are subdivided for the individual functions, so that in the coin-operated telephone, as in Fit. i can be seen, 4 cashier or coin check magnets K i to K4 are provided, of which the magnet K i for checking and checking the io-pfennig pieces, the magnet K2 for checking the 50-prfennig pieces, the magnet K 3 for Checking the i-mark pieces and the K4 magnet for checking thrown io-pfennig pieces. The collection of the 50-pfennig or i-mark pieces and the counting of the Kä.ssierimpulse after taking such a coin is carried out by switching mechanisms A and B, which are designed similar to a selector relay, whose armatures are small cam disks or switching arms with each response by one step move on.

It is now first of all the constructive training for the collection and detection of inserted coins: serving facilities on the basis of Fig. 2 to 6 briefly described. In Fit. With K i, 2 is the cashier magnet for the io-pfennig pieces denotes, whose anchor i is suspended from a leaf spring 2 so that it can move easily. The lower bend 3 of the anchor i. Serves as a swing-out walking floor for the io-penny pieces. In addition, the armature i has a bow-shaped bend ¢, which reaches around the coin channel and: the first inserted coin 5 at Attractive magnet against an inclined surface 6 of the coin channel. presses. One The nose on the bracket 4 prevents the coin from slipping off when the anchor pressure is low. Of the Pin 7 is mounted in a stationary manner and reaches through a recess in bracket 4. When falling: the anchor i, the coin 5 is released and slides between the Extensions 3 and 4 of the anchor i through into the cash box, the pin 7 serves as a scraper for safety reasons. There is no io penny in the storage channel -Piece available, the armature i swings to the left and places the contact spring set k i around.

The magnet K i simultaneously takes a test for the presence of one second io-pfennig piece. This is done: by the one shown in Fig. 2, a second armature 8 of the magnet K i. One in the schematically indicated memory channel g existing second coin io prevents swinging ° .the extension ii from the Armature 8 through the opening 12 of the storage channel. It's not a second io-pfennig piece present, the extension i i presses through the recess 12 on the pimple 13 of the control spring of the contact set kf and thus turns over its contact springs. Instead of a special anchor & for the magnet K i, the test can be based on the presence of a second io-pfennig piece, also due to a laterally bent one Continuation of the anchor i (Fit. 2) take place immediately; however .must: this extension be resiliently attached to the anchor i, since in the absence of the second coin this anchor part must swing through.

The Fit. 3 and 4 show an embodiment for the cashier devices of the 5o-pfennig-Stücl: e. The magnet K2, the armature 14 of which is also mounted on a leaf spring 15 so as to be easily pivotable, is used to check for the presence of such a coin. The contact spring set mf 50, the control spring of which carries a pin 16, is fastened to the armature 14. If the armature 14 is attracted and there is a coin 18 in the storage channel 17, the pin 16 hits the surface of the coin and opens the contact spring set znf 50. The bottom of the coin runner is designed as a swiveling flap at the point where the first 5o-pfennig piece is located. This flap is attached to the leaf spring 2o and provided with a roller 21. The cam disc of this relay is used na of the selector relay A. pulls the armature for the purpose of cashing a 5o-penny piece in order to control this role, the Nockenschebe is na in the arrow direction by a pitch incremented, so that the roller slides up 21 on the cam 22nd As a result, the coin run bottom i9 is pressed to the right (FIG. 3) and thus the coin 18 is released for collection purposes.

If no 5o-penny piece in the memory channel 17 is present, the bent neck 23 of the armature acts Rd., Through the recess of the memory channel 1 1 therethrough, the spring rate k2 a. The bracket 2d attached to the shaft of the pivotable flap i9. hot: the collection of the coin 18 intervenes in the storage channel 17 and prevents a possibly existing second 50-pfennig piece from running on. It is only pushed out of the storage channel 17 when the roller 2: i slides off: the cam 22, which takes place at the next cashier pulse by actuating the selector relay A, so that the following coin rolls up onto the swiveling flap i9, where they by the in Fig. d. indicated return lock 25 is held.

The magnet IL 3 shown in FIG. 1 and used to determine the presence of an i-mark piece can be designed in the same V6'eise as is shown for the magnet K2 in FIGS. 3 and I. Such a coin is collected by the cam disk of the counter relay B, which, however, only has half the number of cams corresponding to the higher value of the coin.

In Fig. 5 and 6, a further possible embodiment for the design of the devices for determining the presence of a high quality coin and for controlling the corresponding spring contacts is shown. It has compared to the embodiment of FIG. 3 and d. -the advantage that there are no contact springs on the armature of the test magnet. The embodiment of FIGS. 5 and 6 relates to the coin checking of i -'- # Iarli pieces. This is the purpose of the magnet K3, the armature 25 of which is mounted on two parallel pins 26 and 27, which are fixedly mounted, in the direction of the core of the magnet K 3 so as to be movable. The armature 25; has two extensions 28 and 29, which are used to actuate the contact spring sets inf ioo and, k3. If there is a coin 34 in the storage channel 30 , when the magnet K 3 is attracted, the downwardly bent projection 32 hits the surface of the coin 31, so that the armature 25 performs a tilting movement and its left extension 28 counteracts the force of the spring 33 is moved below and folds the contact spring set n-tf ioo. The pivot attachment 3.4 is pulled out of the area of the downwardly bent attachment 35 of the armature 25 in this case. The actuation of the stop 3q. can be seen from FIG. 6. This purpose is served by a pair of levers, of which the lever 36 provided with the stop 34 is rotatably mounted about the axis 37 and the other lever 38 is rotatably mounted about the axis 39. One ends of these two levers are still rotatable about a pin .Io on which the spring 4i engages. If a coin 31 is thrown into the storage channel 3o, the lever 38 pushes itself upwards with the help of the roller .a.2 and pulls the stop 34 of the lever 36 out of the area of the anchor extension 35, so that when a coin 31 is present in the Memory channel the contact ntf ioo is actuated. If there is no coin in the storage channel 30 , the spring .a.1 has pulled the pin do upwards, so that the stop 34 is located in the area of the extension 35 of the armature 25. When the magnet K 3 is attracted, the armature 25 is supported on the stop 34, so that the extension 29 of the armature folds over the contact spring set K 3.

The same in the fi: g. 5 and 6 shown. Constructive training can also be provided for the switching elements actuated in front of the magnet K2. The encashment of kIünze 31 occurs in a similar manner as shown in Figure 3 by .the pivotable IVIünzlaufboden 43 which is swung by a cam of the selector relay B at the first response of this relay and releases the coin 31st

The operation of the Circuits i shown in Fig: -. Of the coin operated telephone is the following on the basis of the structural design described above according to figures 2 to 6: In Fig are i a and, b: two speech wires of the subscriber line for the pay phone.. designated. On the left is the circuit for the intercom, and on the right the facilities of the telephone exchange are shown schematically, with the help of which the cashier impulses are transmitted over the subscriber line. It is assumed that the cashier pulses for the periodic multiple counting are given simultaneously via the wires a and b of the connecting line during the conversation with alternating current. If there is a coin in one of the memory channels, the contact snf is open and the short-circuit of the contact nsi of the dial is canceled.

If the speaking guest lifts his handset from the hook switch, the contact lait i is closed and thus the speaking apparatus Sp A is placed in series with the contact nsi of the number switch in the line loop to the telephone exchange. The subscriber can: then establish the desired connection in a known manner by pressing the number switch. If the connection is established, then a counter transmission relay (not shown) or the cashier counter equipped with a contact responds in the telephone exchange. B. 250 ms, is applied in parallel to the speech cores a and b via the choke coils Dr i and Dr2. The blocking circuits Sp i and Spe, which are switched on in the line cores a and b in the telephone exchange, largely prevent the alternating current applied via the contact z from flowing to the exchange facilities. The alternating current surge serving as a cashier impulse arrives at the call station via the choke coils Dr 3 and: Dr, I to the rectifier G in Graetz circuit and after rectification via the two windings of the cashier magnet K i, contact litte of the hook switch, contacts ik 4, kf i, iki, ik 3, 1 m f i oo, i k 2, w, zh3, 3k3, ai, 'na I, Mf5o, bi, nbI, 2172f 1 00, 3k4, a2, b2, laU ¢, rectifier G to earth . The cashier magnet K i responds and holds: the coin on the inclined surface 6 (Fig. 2) of the storage channel. If there is another io-pfennig piece in the storage channel, the contact k f cannot be actuated. (Fig. 2a). After the end of the checkout pulse, the magnet K i drops out and collects the first io-pfennig piece.

In the case of a network group or remote connection with multiple counting during the call, these processes are repeated with each cashier pulse as long as there are still io-pfennig pieces in the memory channel. When the last io-, pfennig piece is cashed out, the contact spring set kf is turned over and the short circuit across the windings of the magnet K 2 is canceled at contact k f i. that: this magnet in series with the magnet K i is made to respond by the still existing cashier pulse. If there is a coin in the storage channel for the 5o-pfennig pieces, the contact mf 5o. opened. A response: the selector relay El or B is prevented by maintaining the short circuit for their windings via: the contacts 2 ki and k f 2 . After the end of the checkout impulse, the magnets K i and K2 drop off again, with the last 10-pfennig piece being collected.

When the next checkout pulse arrives, the magnet Ki in the above-described circuit is first activated again, which turns over both the contact spring set ki and the contact spring set kf. As a result, the short circuit across the windings of the magnet K2 is canceled so that: it responds and opens the contact znf 5o. Since the contact 2k i is now also in the working position, speaks: the selector relay A and brings its cam disks na from position o to position i. As a result, the cam disk aI in position z to 4 produces a short circuit for the magnets K i and K2 via the contact hu5 of the HaQcenumschalters. The contacts 2 ki and k f 2 are switched over at the same time, whereby a short circuit of the windings of the selector relay .A is prevented.

The magnet A now receives the full electrical energy of the cashier pulse for the purpose of safe actuation: the swivel flap (Fig. 3) through the cam disk na. This means that: the 50-pfennig piece is collected. Even after -fall from the magnet A at the end of the cashier pulse updated about NAI in position i to 4 magnets Ki and K2 short-circuited so that the next treasurer pulse is applied only to the voters relay A. With every response,: d ,. H. . Thus, when recording each cashier pulse, the switching wheel of the relay A is incremented by one step and adjusted accordingly its cams na, has: the magnetic A received five current surges, the cams come into a position in which the contact NaI: in: the drawing with the position marked o assumes. Thus, after the end of the cashier pulse, the short circuit for the windings of the magnet K i is canceled and re-established for the winding of the relay Ä.

The next cashier pulse arriving via the connecting line therefore first actuates magnet K i again and, if it does not find a thrown io-pfennig piece, magnet K: 2. The high-resistance winding of the magnet K i is short-circuited at the contact 2 k, 2. If there is no coin in the storage channel for 50-pfennig pieces either, the contact spring set k 2 is turned over and the short circuit for the magnet K 3, which has its armature (i4, FIGS. 3 and 4, or 25, FIGS. 5 and 6). Attracts. If the latter finds an i-mark piece, the contact spring set mf ioo (Fig. 5) is turned over, whose contact 2- znf ioo removes the short circuit for the winding of the selector relay B, while the contact i mf ioo die high ohmic winding of the magnet KZ is short-circuited. This results in a current gain for the windings of the magnet K3 and the relay B, which completely short-circuits the magnets K i to K 3 by moving its cam contact yab I from position o to position i to 9. The following payment impulses therefore act directly on relay B in the same way as previously described for relay A. If the selector relay has received 9 further pulses, its cam disc moves into the rest position, in which the contact nb I is moved from position i to 9 to o. The relay B remains in the working position via its contact bi while maintaining the short circuit for the magnets K i to K13; until the end of the tenth cashier pulse.

It must now be checked whether there are still more coins available for the next checkout, since a warning signal for the impending disconnection is transmitted to the speaking guest: must, if: the memory channels are empty. The test magnet K4 and the relay TW .. serve this purpose. The magnet K 4 can be designed in the same way as the magnet K i according to FIG. Instead of the contact spring set k f i shown in FIG. 2a, it actuates a spring set k4 if there is no io-pfennig piece in the storage channel. If the camshafts of selector relays A or B M in the fifth or tenth cashier pulse are in the rest position o, the short circuit for the windings of the magnet K4 is canceled at na II or lab II, since the contact a2 or b 2 is also open. At the contact 3 k 4, the winding of the relay A or B is short-circuited so that it drops out and the contact ai or b i opens. As a result of the still ongoing cashier pulse, since the magnet K i is short-circuited via the contact Z k 4 , the magnet K 2 is excited and checks for the presence of a 50-pfennig piece. If the spoke channel is this: Coins L; @er, the short circuit for magnet K3 at contact i 1z 2 is canceled and magnet K3 checks whether there is still an i-mark piece or has been thrown in the meantime. If this test is also negative, the contact 2 k 3 opens, so that the relay W responds. The winding of the isolating relay T: remains short-circuited via contact 4k4. The armature of the relay W mechanically actuates a buzzing contact sk in a known manner, which periodically short-circuits and opens the windings of the alarm clock Wk and thus generates a buzzing signal in the speech set SpA. This gives the speaker a sign that he has to pay later if he wishes to continue the conversation. If there is also to be a visual display, for example by means of a flag with the words "Please postpay", the armature of the relay W must be mechanically latched, since its winding is de-energized at the end of the cashier pulse. The flag can be unlocked by inserting new coins or hanging up the phone.

If no coins are thrown in, the short-circuit for the isolating relay T is canceled when the next cashier pulse arrives after the magnets K i, K 2 and K 3 have responded at contact zk 3, since now: contacts kf 3 and 3 ki are also activated and the contact 41z4 remains open. It locks its armature mechanically, closes the windings: the magnet K i to K 3 briefly via its contact t i and breaks the speech loop by opening its contact t2, which triggers the existing conversation. The relay T is unlocked by the hook switch when hanging the receiver.

Since the checks for the presence of more coins in the storage channels in the order of the '-% liinzwerte (io pfennig, 5o pfennig, i mark) through the Magnets K i, K: 3 and K 3 after each negotiation of the value of a cashed coin take place when the last cashier impulse corresponding to your nunk value arrives, the relay W always responds when the last coin is used up, and gives the Speech bast a warning sign. The connection is disconnected on arrival of the next cashier pulse if no coins have been thrown in response to the warning sign are inevitably carried out by the relay T. These operations are in the foregoing Description explained with a few examples. All options in detail There is no need to describe it, since the mode of action is always the same in principle is.

If the speaker ends a conversation and there is still one more the switching mechanism A or B is outside of its rest position, i.e. the coin value concerned, z. B. i Mark, not yet fully discussed, the rear derailleur must be in the rest position postponed "ends. This is done in the following way: When hanging up the handset "the contacts hit6 and 11U7 of the hook switch are closed, so the following DC circuit is established via the voice wire ct: earth, contacts b3, a3, hit7, Cam contact iib II in position i to 9, relay B, cam contact I (i to 9), Contact 11u6, d-core, choke coil of the blocking circuit Sp i, feed bridge relay of the subsequent group selector (not shown), battery, earth.

In this circuit, the relay B at the intercom responds, while the feed bridge relay of the group selector remains activated in the office. Initially, the release of the connection path is prevented. The relay B opens its contact b 3 and thus switches the relay U into the electricity price described above via the wire: he a. The relay U responds and with its contact zt i the winding: of the relay B shorts so that it drops out. The contact b 3 is thus closed again and a short circuit for the winding of the relay U is established. The relay U, which works with dropout delay, drops its anchor a short time later and thus loves the contact ii. i the short circuit for d.as relay B again, so that its armature advances the cam disk by one more step.

This interplay between relays B and U continues until the cam disc has reached its rest position, o. Then the circuit described above is opened via the line core a at the contact ftb I (position i to 9), so that the feed bridge relay in the group selector also drops out and the connection is finally released.

The same processes take place when the cam disks of relay A are outside of their rest position when the receiver is attached to the intercom. The previously described circuit over the line duration a then runs over the contact na, 1 in position i to 4 and over the winding A. The relay A opens its contact a 3 and thus removes the short circuit for the winding of the relay U. The subsequent response of this relay causes the short circuit of the circuit A via the contact 7t 2. The interplay between the relays U and A continues until the cam contact na I (position up to 4) when it reaches the zero position or the like the N ockenscheihe is opened.

Claims (7)

PATENT CLAIMS: i. Circuit arrangement of coin-operated telephones for self-dialing long-distance traffic with individual cashing of different values: gerMünzen by counting current surges given by the telephone exchange during the call state according to patent 853468, characterized in that the control magnets of the cashier organs (K i, A, B) and the coin value detection (K i to K 3) for the Coins of different types can be actuated directly .by the cashier stream running over the voice lines one after the other depending on the presence of coins in the relevant storage channels in the order of the coin values. 2. Circuit arrangement according to claim i, da- (characterized in that the control magnets (K i to K 3, A, B) are connected in series in a rectifier circuit and short-circuit each other depending on the presence of coins in the individual storage channels. 3. Circuit arrangement according to claim i and 2, characterized by: that a control magnet (K i, K2, K3) is assigned to each coin value, which is dependent on of the absence of a coin of the relevant value the control magnet for switching the next higher coin value into the cashier circuit. 4. Circuit arrangement according to claim 2, characterized in that the control magnets (f1, B) of the cashiers for the high-quality coins are short-circuited by coin sensing contacts (mf 50 and mf ioo) as long as there are coins of lower value in the storage channels. 5. Circuit arrangement according to claim 3 and 4, characterized in that the Mün.zfühlkontakte (mf 5o and mf ioo) opened for the high-quality coins one after the other by the control magnets (K2, K3) for the coin value determination depending on the absence of a coin of lower value will. 6. Circuit arrangement according to claim 3 and 4, characterized in that the control magnets (El and B) of the cashier organs for the high-quality coins in their responsive cashier magnets (K i) for the low-value coins and the control magnets (K2, K3) for .die Short-circuit coin sensor contacts (k2, mf 5o; h3, mf 10o). 7. Circuit arrangement according to claim i to 6, characterized in that the control magnets of the cashier organs for the high-quality coins are designed as stepping mechanisms (selector relays .A and B) and: by when they respond for the first time. Actuated switching contacts (cams na I and nb I) short-circuit the other control magnets (K i to K3) until they have covered a number of switching steps (5 to io) corresponding to the value of the cashed coin under the influence of the cashier pulses. B. Circuit arrangement according to claim 3 and 7, characterized in that switching contacts (naII or nb Il) actuated by the control magnets (A or B) , the cashier for the high-quality coins, when receiving the last of the value of the cashed coin (5o pfennig or i Mark) corresponding cashier pulse, a test magnet (K4) that detects the presence of further coins is switched into the cashier circuit. 9. Circuit arrangement according to Claim 3 and 8, characterized in that the test magnet (K4) causes the successive switching on of the control magnets (K2, K3) assigned to the individual coin values. ok Circuit arrangement according to Claim 9, characterized in that the test magnet (K ¢) itself checks for the presence of a coin with the lowest value (io pfennig) while the control magnet (K i) is short-circuited with this coin value. i i. Circuit arrangement according to Claim 9, characterized in that the control magnet assigned to the highest coin value (K3) switches on a relay (W) in the cashier circuit by the coin sensor contact (2 h 3) actuated when the absence of a coin is detected; that triggers a warm sign (snarling contact sk). 12. Circuit arrangement according to claim ii, characterized in that at the next cashier pulse following the activation of the warning sign after another unsuccessful check for the presence of coins by the coin sensor contact (3k3) actuated by the control magnet (K3) for the highest coin value, a forcibly Separation of the connection causing relay (T) in the cashier circuit is switched on. 13. Circuit arrangement according to claim 7, characterized in that the resetting of the selector relays (A and B) to the rest position after the call has ended by the direct current from the office battery . 14. Circuit arrangement according to claim 13, characterized in that the DC circuit when hanging up .des handset at the intercom via the switching contact (naI or nb I) .des selector relay (A or B) is closed as long as this contact is outside of his Is in rest position. 15. Circuit arrangement according to claim 14, characterized in that when the receiver is hung up, a control relay (U) is connected in series with the selector relay (A or B) in the direct current circuit which, together with the selector relay, forms a relay interrupter by the selector relay ( A or B) and the control relay (U) alternately short-circuit their windings.