BE451446A - - Google Patents

Description

       

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  Coupling arrangement for determining different directions of traffic in telephone systems.



   We. already knows, for the determination of a desired direction of traffic in telephone installations, arrangements in which such a determination takes place as a function of the emission of different series of current pulses or of different frequencies, and, where appropriate, as a function of different induction pulses. In this regard, in some arrangements the use of different line conductors and, where appropriate, even the application of different potentials to the communication path are also decisive for the desired direction of traffic. , the varying length of the various current pulses is used to select a desired direction of traffic.

   The selection of the direction between a station providing criteria and a station using these criteria takes place, for example, in this case, in some installations, by the fact that a part frequency is provided - for each digit of the characteristic number of the

  <Desc / Clms Page number 2>

 direction, the numerical value being determined by the moment of emission of the corresponding frequency.

   For this purpose, at the station supplying criteria, a coupling mechanism is provided which is equipped with a number of series of contacts corresponding to the number of frequencies to be transmitted, the number of contacts of each series of contacts being - even determined by the number of numerical values. A correspondingly equipped coupling mechanism is provided at the station using the criteriums. To the contacts of the various series of contacts of this station are connected with relays for the use of the emission of criteriums.

   The two coupling mechanisms are maintained in the synchronously coupled state by an alternating current applied to the communication channel connecting the two stations, so that, among the relays provided at the station using the criteria, the relays corresponding to the frequencies applied , in each case, by the mechanisms of coupling to the transmitter station are actuated at the moment in question in the o.various positions of the contacts of the coupling mechanism, to cause, immediately after, a corresponding adjustment of the selectors.



  If, in such an arrangement, for example, 1000 traffic directions have to be determined, it is necessary to provide at the station providing the criteria four frequencies, which are applied, according to a method corresponding to the numerical value, to contacts of four series number of contacts corresponding to the different digits. At the substation using the criteria, 40 relays must then be connected to the correspondingly equipped coupling mechanism. With a view to the emission of the steering criterion, 1023 is thus applied to the first contact of a first series of contacts of the coupling mechanism a first frequency corresponding to the figure of 1000, in accordance with. the numeric value 1 of the digit of 1000.

   A second frequency cor-

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 corresponding to the hundreds digit is applied to the tenth contact of a second series of contacts of the coupling mechanism.
0 of the digit range according to the numeric value / hundreds. A third frequency corresponding to the tens digit is applied to the second contact of a third series of contacts of the coupling mechanism in accordance with the digital value 2 of the tens digit. A fourth frequency corresponding to the ones digit is applied to the third contact of a fourth series of contacts of the coupling mechanism in accordance with the numerical value 3 of the ones digit.

   When the contacts thus characterized are seized by the coupling mechanism of the station supplying the criteria, under the effect of the frequencies emitted at the determined time and by the intermediary of the coupling mechanism operating synchronously with the station using the criteriums, the frequency reception relays which are connected to the corresponding contacts and which ensure, immediately afterwards, the use of the criterion 1023 come into action. It is therefore appropriate to provide as many frequencies as the management criterion has digits. The number of relays corresponds to the number of frequencies multiplied by the number of different numerical values.

   Thus in the present example four frequencies are required at the station providing the criteria and 40 relays are required at the station using the criteria.



   The present invention, while building on the transmission of signs, as it results from the technique of teletype machines operating on alternating current, - transmission in which a rotary switch obeys contact points mechanically controlled by key levers and selector arms and supplies the contact points with corresponding current pulses via a switch operating synchronously

  <Desc / Clms Page number 4>

 at the station using the criteria for the mechanical adjustment of contact members, another method follows.

   This method is characterized by the fact that the coupling devices of two stations are brought forward synchronously and by current pulses under the effect of a series of current pulses (fundamental series of pulses of current: ten current pulses) emitted along the communication channel by one of the two substations and by the fact that the coupling devices of the substation supplying the criteria cause, along the communication channel, under the '' influence of the coupling members actuated correspondingly to the desired direction of traffic, an additional emission of current pulses,

   which determines the desired direction of traffic by the number of characteristic current pulses and the moment of their emission and which occurs during the series of current pulses, this additional emission of current pulses sets, by the coupling members which serve to receive the characteristic current pulses, the coupling member prepared by the coupling devices at the station using the criteria at each moment when the emission of the characteristic current pulse occurs, after which, at the end of the additional emission of current pulses, the coupling members influenced at the various times determine the desired direction of traffic according to their number.



   This arrangement has the advantage that the number of criteriums (for example of Tréquence) to be transmitted does not correspond to the number of digits of the selection of the direction, but is appreciably lower. If, for example, ten current pulses of a determined frequency are used for the advancement of the coupling devices to the two positions, it will be sufficient outside this frequency for this series of current pulses, called fundamental, d 'just one other

  <Desc / Clms Page number 5>

 frequency for the constitution of the criteria, in order to transmit, for example, 1023 criteria, since the composition according to the invention of the management criteria provides 1023 possible combinations.

   If, on the other hand, the series of current pulses used to advance the coupling devices comprises only five current pulses, apart from the frequency essential for this purpose, two other frequencies must be used for transmit IO23 steering crftériumsf.



  But, because of this, a considerable reduction will have occurred in the transmission time. Corresponding savings occur in the number of relays at the station using the criteria, The number of relays, provided that only one characteristic current pulse is emitted, in each case, for one current pulse of the series of current pulses, is determined only by the number of current pulses of the fundamental series and, in the event of emission of several current pulses for one current pulse of the fundamental series, the number of relay is determined by the product of the number of current pulses of the basic series by the number of characteristic current pulses emitted simultaneously, while in the known arrangement, which has been explained,

   a number of criterion use relays corresponding to the numerical value is required for each digit.



   Furthermore, thanks to the emission of a particular series of current pulses (fundamental series of current pulses) one obtains, in an irreproachable manner, for the synchronous advancement of the coupling devices. , such a synchronism without the use of jerky-advancing mechanisms whose structure affects a particular shape and without particular construction devices for the realization.

  <Desc / Clms Page number 6>

 
 EMI6.1
 tion of a synchronism, which should be .1.2 to obtain absolutely precise, of these jerky advancement mechanisms.



  Figs. 1, 5 of the accompanying drawings show an exemplary embodiment of the invention and, in fact, FIGS.



  1 to 4 (of which fig. 1 and 2 must be arranged for 1 '
 EMI6.2
 study next to each other and rig. 3 and 4 in corre- sponding order and below show a four-wire line that can be reached via a Uel transmission and has three group selection hostages.
 EMI6.3
 pe (GWL - ü; VS telephone selectors). A number, in relation to the telephone traffic, of these communication lines is provided at the various intermediate stations of the network.
 EMI6.4
 telephone, part of which is shown schematically in FIG. 5.

   In fig. to 8 are indicated, following a diagram, various possibilities of constitution of the criteriums for the establishment of communications: 11unic-ations with the various intermediate stations. Of these various selection ¯enres, it is the one represented in fig. 6 which has been applied in the present example of execution.
 EMI6.5
 



  A general explanation should first be given with the aid of fig. 5.



   If, for example, a communication is to be established from the intermediate station VSt1 to the intermediate station VSt3, it is first given in a manner which matters ::: had here, via the communication line Wl occupied beyond transmission Ue from the inter-
 EMI6.6
 MEA.i.aire VStI, an occupancy pulse d. 750 c / s audible frequency to the Uel transmission of the VSt2 intermediate station. As a result, a free coupling selector AW is requested for setting on the busy line.It connects a communications standard, to establish through this standard the desired communication channel beyond the
 EMI6.7
 necessary selection stages (GW1 ... & W3).

   The selection of

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 the desired direction takes place after a start signal, emitted by the intermediate station VSt2, has been received at the intermediate starting station VSt1, for example by actuating at this intermediate starting station VStl a direction key. corresponding key position, which changes the position of the corresponding keys among the keys indicated Tl ... T10.



   In this case, we press the direction key which corresponds to the intermediate station VSt3 and which causes a ,.



   T6 change of position of keys Tl, T4, T5, / and T8. In addition, the start button Ts is actuated at this moment in a transient manner, While it is applied directly, under the effect of the buttons T1, T4, T5, T6 and T8, a potential plus to the corresponding contacts, swept by the coupling arm wl, instead of the potential no longer applied until then via a resistor for each of these contacts, a circuit is closed for the rotating magnets @w, which move the arms of coupling w1 and w2, via the start button Ts and the coupling arm w2 which is in the rest position. The coupling arms receive an advancement.

   Via the coupling arm wl, which is located on contact 1, the relays Jg4 'and Jg5' are now energized, given that following the actuation of the keys, the circuit does not go through the resistance included in its layout without it. While, under the effect of closing contacts 89ig4 'and 90ig4', an AC pulse of 600 c / s is emitted and under the effect of 'closing contacts 91ig5' and 92ig5 'it is emitted an alternating current pulse of
750 c / s along the communication path Wl to the transmission Uel, the rotary magnet Dw is again influenced by the effect of the closing of the contact 88ig4 ', so that the coupling arms wl and w2 are put in progress later.

   As there is an excitation of the relay
Jg4 'via each key, whatever

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 the position in which it is, the coupling arms wl and w2 are advanced to their resting position.



  After each advancement, therefore, also an alternating current pulse of 600 c / s is emitted, so that in total 10 alternating current pulses of 600 c / s are emitted, as indicated. in fig. 6, in the middle series of lines. But since there is a plus potential as a result of the change in position of the key Tl, not only at contact 1 of the contact bank scanned by the coupling arm wl, but also at the contacts corresponding to the keys T4, T5, T6 and T8, the position of which has been modified, after these contacts have been reached, beyond the excitation of relay Jg4 ', an excitation of relay Jg5' occurs, so that in addition From the 600 c / s alternating current pulse, an alternating current pulse of 750 c / s is also emitted (component).



  This is indicated schematically in the upper series of lines of fig. 6. As a result, in addition to the 1st, 4th, 5th, 6th and 8th alternating current pulses of 600 c / s, an alternating current pulse of 750 c / s is therefore emitted. The criterion constituted by this fact and determining the intermediate station VSt3 is therefore received by the transmission Uel and, as will be indicated later, this criterion is transformed into direct current pulses of variable intensity. As a result, user devices which exist in the communications standard VS are influenced correspondingly. They cause a corresponding adjustment of the Gwl telephone selector located on the busy line.

   This voter occupied, by means of a free transmission, for example Ue2 ', the junction line W2 to the intermediate station VSt3. There, under the effect of a busy current pulse, which has just been emitted, the transmission Ue3'f is again occupied, transmission at the junction line of which is now

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 coupled with a free communications standard VS, as is the case with the intermediate station VSt2. Indeed, the equipment of the intermediate station VSt3 is the same as that of the intermediate station VSt2.

   Following this connection, an outgoing signal is given by the intermediate station VSt3 to the intermediate station VSt2, so that as a last resort it is sent from the communications standard VS the criterion of the intermediate station VSt3 in the form of direct current pulses of variable intensity to the transmission Ue2 'and that from this transmission this criterion is sent to the intermediate station VSt3 after having been transformed into alternating current pulses, in the form received beforehand. lable by the VStl intermediate station (see end *. 6).

   The transmission Ue3 'transforms again the criterion, which consists of alternating current pulses, into direct current pulses of variable intensity, in order to influence in a corresponding way the devices of use provided for in the communications standard therein and for bring the necessary selection stages to adjustment under the effect of these devices. After repeating the criterium, the communications standard VS is released at the intermediate station VSt2. In order to complete the communication, if necessary via an even greater number of selection stages to the offices of the local network which is then reached, digital current pulses can also be output for the purpose of adjustment. local network selectors.



   If, instead of communication to the intermediate station VSt3, a communication to the intermediate station VSt4 is to be established, after the start signal sent by the intermediate station VSt2 has been received at the intermediate station VSt1, a direction key corresponding to the intermediate station VSt4 is activated. This key causes a change of position of keys T6 and T8.

   In addition,

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 the de: part Ts button is comfortable in action at this moment in a transient manner. While, under the effect of the keys T6 and T8, a potential plus is applied directly to the con-
 EMI10.1
 corresponding tacts, swept by the arm of cO, ù1Ùa (i wl, instead of the more potential applied through a resistor for each of these contacts, a circuit is again, closed for the rotating magnet Dw which makes moving forward
 EMI10.2
 the coupling arms wl and w2, by the interiu4ci. #. ire of the start button Ts and of the coupling arm w2 which is in the rest position.

   During this progress, it is again emitted, as in the previous case of establishment of a communication, 10 pulses of alternating current of
 EMI10.3
 600 c / s, as indicated in the middle series of lines in fig. 6. In addition to the excitement, which takes place at
 EMI10.4
 10 times, from relay Jg4 ', at the same time as the 6th and 8th excitation of this relay, an excitation of the relay Jg5' occurs, so that the cOnS8CUGnCe, in addition to the 6th and the 8th alternating current pulse of 600 c / s, a pulse is still emitted for each of them.
 EMI10.5
 750 c / s alternating current ion (component). This is shown schematically in the series below.
 EMI10.6
 higher of the lines of the fir, 6.

   The criterion thus constituted and determining the intermediate station VSt4 is then absorbed as before by the transmission Uel to the intermediate station VSt2 and is transformed again into direct current pulses of variable intensity. As a result, the operating devices existing in the VS communications standard are then influenced in such a way that they cause
 EMI10.7
 therefore / successively unadjustment of the telephone selectors Glrll, GW3 and GW3, in the event that the main path leading to the intermediate station VSt4, the path of which the junction line w3 is shown in fig. 5, is free.

   The remote selector
 EMI10.8
 phonic GW3 seeks a free transmission, for example Ue2, beyond which it reaches the junction line W3

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 leading to the intermediate station VSt4. There, the Ue3 transmission is occupied again by a busy current pulse which has just been transmitted. To the junction line of this Ue3 transmission is now connected, as to the intermediate station VSt2 mu VSt3, a standard of free communications VS. In fact, the equipment of the intermediate station VSt4 is the same as that of the intermediate station VSt2.



  Following this connection, a start signal is given by the intermediate station VSt4 to the intermediate station VSt2, so that as a last resort it is sent by the communications standard VS the criterion assigned to the intermediate station VSt4 under the form of direct current pulses of variable intensity to transmission Ue2 and that from this transmission, after transformation into alternating current pulses in the form previously received by the intermediate station VStl (see fig. 6), this signal is sent to the intermediate station VSt4.

   The Ue3 transmission transforms again the criterion, consisting of alternating current pulses, into direct current pulses of variable intensity, in order to influence in a corresponding way the devices of use provided for in the communications standard of this station and to provoke the setting the necessary selection stages under the effect of these devices. After repeating the criterium, the communications standard VS of the intermediate station VSt2 is released.

   In order to complete the communication, if necessary over a still greater number of selection stages, digital current pulses can also be emitted according to the method already indicated.
An allusion has already been made that, in this establishment of a communication, the desired junction channel is established by means of the telephone selectors GW1 - GW3, in the event that the main channel leading to the intermediate station VSt4 is free.

   But if this is not the case, the communications standard causes via the

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 devices for use, according to a method which will be described later, the preparation of a derived route and, in fact, this derived route passes in the present example through the intermediate station VSt3. Consequently, if the branch channel is used, it is not the telephone selectors GW1 - GW3 which are brought to the setting, but only the telephone selector GW1 and, in reality, on a free transmission which gives access to the VST3 intermediate station.



  This transmission can, in the present case, be the Ue2 'transmission, shown in FIG. 5. Beyond this transmission, the junction line W2 leading to the intermediate station VSt3 can be reached. Through this junction line, as has been described several times, the transmission Ue3 'is occupied by a busy current pulse which comes to be transmitted coupled .and to the trunk line of this transmission is;

       now a free communications standard. After a start signal has been given, following this connection, from the intermediate station VSt3 to the intermediate station VSt2, the criterion of the intermediate station VSt4 is sent, in the form of direct current pulses of variable intensity, from the communications standard VS from the intermediate station VSt2 to the transmission Ue2 'and, from this transmission, after transformation into alternating current pulses in the form previously received by the intermediate station of VSt1 (see the middle and lower series of lines / Fig. 6), this criterion is sent to the iatermedisire station VSt3.

   Transmission Ue3 'transforms again the criterion which consists of alternating current pulses, into direct current pulses of varying intensity, in order to influence in a corresponding way the devices of use provided for in the communications standard of this transmission. and to request the selection stages for adjustment

  <Desc / Clms Page number 13>

 necessary under the effect of these devices. After this adjustment, a free transformation is then reached, which gives, for example, access to the junction line W4, indicated in fig. 5 and leading to the intermediate post.VSt4.

   The same coupling processes are now renewed between the intermediate station VSt3 and the intermediate station VSt4, as those which have just been described during the establishment of the communication path passing through the junction line W2 and, in fact, the repetition of the criterium assigned to the intermediate station VSt4 takes place from the communications switchboard of the intermediate station VSt3. This criterion is used, after the corresponding transformation into alternating current pulses and after a new transformation into direct current pulses of variable intensity, at the intermediate station VSt4 under the effect of a corresponding communication standard, to so that the necessary selection stages are now requested for adjustment at intermediate station VSt4.

   After repeating the criterium, the communication switchboard of the intermediate station VSt3 is released. In order to complete the communication, digital current pulses can then be sent for the setting of other selectors in the local network reached.



   Following this general explanation of the execution example, it is advisable to study, with the aid of figs. 1 to 4, the coupling details involved in this example. These figures show the junction line that we ,. can reach over the Uel transmission of the VSt2 intermediate station, with the three telephone selectors of the group selection stages GW1 - GW3 and an AW coupling selector, which is switched on when switching on. occupation of the junction line and which connects through its coupling arms, after the busy line has been reached, the already mentioned common communications standard VS,. with the devices of use (pyramid of contacts, selec -

  <Desc / Clms Page number 14>

 EW1 ... EW3), on the busy trunk.

   



   Under the effect of the occupancy pulse at an audible frequency of 750 c / s, emitted according to the usual method by the intermediate station VStl placed in front (fig. 5), the
 EMI14.1
 contact la (fig.T) is closed in the mentioned transmission Uel, so that the relay R is energized by the intermediary of the following circuit: -, Wil, R, la, +. Relay R
 EMI14.2
 is placed, by means of its contact 3r and independently of the contact la, in a stop circuit. After closing the? Gold contact, the following circuit is made up: -, VTi4, 28dl, & 9r, 30q, 5 &r; A15wl 1, 60pa,, +. The relay Algwl, energized in this circuit, causes, by l 'Via its 107algol contact (fig. 2), an excitation of the A2gwL relay.



  In the meantime, after the closing of the contact 5r (fie.l), a test circuit was prepared by means of the coupling arm 7gwl of the telephone selector Grd7. of the first group selection stage, to search, through this selector and during the 0th anniversary, for a free coupling selector. The GW1 telephone selector
 EMI14.3
 It therefore serves first of all as a selector-distributor. The contacts of the contact bank, to be scanned by the coupling arm 7gwl, of the telephone selector, GrTl, constituted in the form of a motor selector, are connected by wires to the various switch-on lines leading to the switchboards. communications of the case in question.

   As the number of
 EMI14.4
 contacts of group selector GW1 exceeds the number of switch-on lines, the free contacts that remain after the first connection of the switch-on lines,
 EMI14.5
 are again connected by wires according to a corre- sponding method, and if necessary several times according to the same method, to the switch-on lines. In the meantime, relay A2gwl (fig. 2), which has energized, has closed,
 EMI14.6
 by its contact l14a? ziil and by l t intc ::. "méo, i [',. ire of contacts l13pgwl, llCr and 108wol (arnter contact closed in the position

  <Desc / Clms Page number 15>

 idle, a circuit for the motor selector drive Mgw1 of the telephone selector GW1, shown only here schematically.

   In this case, the Igwl -7gwl coupling arms are moved forward until the 7gwl coupling arm reaches, for example, the line an and thereby the AW coupling selector equipped with the law - 4aw coupling arms ( fig. 1) and 5aw - 7aw (fig. 2). The following circuit is constituted: -, A1, I, 38a1, 36a; year. 7gwl, IOq, 8f, 7hgwl, Pgwl, I, II, 4hgwl, 5r, +. In this circuit the relays Al and Pgwl enter: in excitation. The Pgwl relay, shown in fig.l, is the same as the Pgwl relay, shown in fig. 2. It is represented once more only to simplify the representation.

   The same is true of the PIgwl relay. Under the effect of opening the 113pgwl contact (fig. 2), the Mgw1 motor selector drive is switched off. Under the effect of closing contact 6pgwl (fig. 1), relay Plgwl is energized in parallel with winding II of relay Pgwl, so that after closing contact 22plgwl, relay Q is energized via the 21wel shaft contact, closed at this time.

   After the closing of the contact 24q, the capacitor Col, charged by the intermediary of the contact 25q, after the closing of the contact 26r, is coupled, to delay the fall of the relay Q, in parallel with the winding of this relay. Q, so that even after the end of the energization of relays Pgwl and Plgw1, which intervenes in the interval following the opening of the contact IOq, the relay continues to be energized for a certain time and the transmission occupied .. Uel is characterized in the contact banks of the various coupling selectors via contact 3Iq. This characterization is therefore maintained for a certain time, which is determined by the size of the capacitor Col.

   If the coupling selector is requested,

  <Desc / Clms Page number 16>

 
 EMI16.1
 of which the motor selector drive: -a;.; is switched on via contact 56a2 after excitation of relay A2 via contact 34al, the characterized Uel transmission cannot be found, the relay is devoid of current ct, therefore, the telephone selector GW1 is called to carry out a new adjustment. Like contacts
 EMI16.2
 110wol and I3Lwol (fig. 2) are closed and as the relays Algwl (winding II) and A2gwl are energized, the telephone selector G \ '1l continues to turn in the ir.ervalle and that until the rest position.

   Once the rest position has been reached, stopping takes place under the effect of the change
 EMI16.3
 position of shaft contacts wol. Relay Al (fiS.1), energized via line an and causing the coupling selector to advance, is delayed in its fall by the parallel coupling of capacitor C02, chars6 beyond contact 4IaI , so that it remains in: action for a while still carried out, the continuation cc the opening of its circuit of excitation to the contact IOq. The start-up request, supplied only temporarily by the excitation of relay R, is therefore maintained as a function of time, this time being calculated in such a way that the selector
 EMI16.4
 0,0 c01..1,1'l ", -, '3 can check the transmission devices which are accessible to it.

   In case, for any raiaon, the coupling selector does not find in a time determined by the capacitance of the capacitor Co2, as
 EMI16.5
 this C02 capacitor is then charged, the role-is Al is devoid of current and moves, hor. circuit, under the effect of opening contact 34al, even relay A2. Consequently,
 EMI16.6
 the motor selector drive r.'a- is also switched off at contact 56a2. The selector; tK: iim: iJ.E telephonlc, ue G ^^ 1 then searches, as already mentioned, for another coupling selector. '; 8 i8 if the requested coupling selector finds the line

  <Desc / Clms Page number 17>

 characterized by the closing of contact 31q, the following circuit is made up: -, W14, 28dl, 29r, 3Iq, F, law, Pl I II, 62al, +.

   In this circuit, relays F and P1 start to operate. Under the effect of the closing of the contact 33f, the relays F and P are maintained independently of the contact 31q.



   The ". ::. Motor selector drive Maw is switched off at contact 44pl. If the telephone selector GW1 reaches the rest position at this moment, it occurs, beyond the after contact 12a2gwl still closed / closing of the shaft contact
13wol, an excitation of the Ygwl relay via the following circuit: -, Wi2, 13wol, 12a2gwl, Ygwl, I, 9f, 7hgwl,
Pgwl I, II, 4hgwl, 5r, +. The Ygwl relay is maintained after closing the 17ygwl contact via its coil II.

   If the relays Pgwl and Plgwl are devoid of current due to the opening of the contact 12a2gwl, as the contacts I9algwl and 20plgwl are then open, the relay
Hgwl enters in series excitation, with winding II of relay ygw2 and switches off, under the effect of the opening of contact I4hgw1, the relay Ygwl .. Under the effect of closing of contact 15hgwl, the Hgwl relay is placed in a stop circuit. Under the effect of the opening of the 23hgwl contact, the relay Q is devoid of current.

   Under the effect of closing of contacts II7hgw @ and I21hgwl (fig. 2), the relays
Pgwl and Plgwl are prepared by the communications standard
VS for the adjustment,. Which will intervene later, of the telephone selector GW1. In the meantime, the relay Pl (fig.



     1); energized in series with relay F, after closing contact 59pl, energized relay P2. Under the effect of the opening of the contact 39p2, the winding II ′ of the relay Al is switched off, as is the relay A2 under the effect of the opening of the contact 34al. After the 58p2 contact has closed, the relay S is energized, while, under the effect of the 327p2 contact closing (fig. 4), the relays

  <Desc / Clms Page number 18>

 N1 and N2 are excited. As a result of the closure of the con-
 EMI18.1
 tact 250p2 (fis. 3), relay S2 is energized by means of its winding I. After closing contact 65s2, the following circuit is formed: (fie ;. 1) -, St I, II, 93sth , 2a;., 63z, 65s2, 67st2, 71stl, Stl, 74p2, +.

   In this circuit, the relays St and Stl are energized. Relay St puts on circuit, via
 EMI18.2
 its contact 6st, the relay StH, which is placed, via its contact 95sth, in a stop circuit.



  Relay St is switched off at contact 93sth, while at contact 94sth a current pulse circuit is prepared. The relay Stl is placed, after closing the con-
 EMI18.3
 tact 72stl and through the. resisted: this sii7, in a stop circuit.



  The transient excitation of relay St in transmission Uel causes, according to a method which matters little here, the transmission of a departure signal to the intermediate station
 EMI18.4
 placed in front VStl (fig. 5), so that a characterization current is emitted from this intermediate station. If communication is to be established with the VSt3 intermediate station, the characterization current has the form shown in the middle and upper series of lines in fig. 6.

   It is therefore sent by the intermediary
 EMI18.5
 diary placed in front VStl, according to the method already described, 10 pulses of alternating current of the frequency of 600c / s, while it is emitted, in addition, during the 1st, 4, 5, 6 and 8th current pulses a 750 c / s alternating current pulse. These alternating current pulses are used
 EMI18.6
 d8..1S transmission Uel under the effect of the cooperation of the 600 c / s and 75G ejs relays so that the 600 c / s contact is closed 10 times in succession, while the 750 c / s contact s is only closed during the 1st, 4th,
 EMI18.7
 5, 6 and 8th contact closures of 600 c.s.

   The 600 c / s and 750 c / s contacts are activated, being

  <Desc / Clms Page number 19>

 given that in the meantime relay S2 (fig. 3) was deprived of current due to the opening of contact 252stl, via contacts'64s2 and 66stl (fig. 1) on the relay JK1 and JK2 in such a way that, when the 600 C / s contact closes, only the JK1 relay is energized via the resistance Wi23, while the JK2 relay starts to operate at the same time. time that the relay
JK1 when closing the 750 c / s contact.

   In the present case, under the effect of relay JK1, contact 356ikl (fig. 4) is therefore closed IO times, while under the effect of relay JK2 contact 496ik2 (fig. 4) is closed only when 1st, 4th,
5th, 6th, and 8th current pulses. When contact 356ikl is first closed, relay Hl is energized by the circuit: -, Hl, 406hhl, 4IOhh2, 417hh3,
422hh4, 42ihh5, 354b2, 356ikl, +. As, in accordance with the criterion, contact 496ik2 is closed at the same time as the first closing of contact 356ikl, the following circuit is formed after closing contact 366hl: -, Wil8, 362b2, 366hl, 373hhl, 386g1 , 459nl, WI I, 496ik2, 493bl,
495p2, +.

   In this circuit, the relay Wl is energized. It is placed, by its winding II and via the contacts 200p2 and 20Iw1 (fig. 3), in a stop circuit.



   As the contact 408hl is closed, it then occurs, during the pause which occurs after the first current pulse, that is to say after the first opening of the contact 356ikl, an energization of the relay HHl, which was up to then short-circuited and that by the circuit: -, Hl, 408hl, HH1,
409h2, 440kl, 446z, 443st2, 444p2, +. When the 356ikl contact is closed for the second time, as at this time the contact
407hhl is closed, the H2 relay energizes.



   As contact 496ik2 is not closed, no circuit is formed through contact 367h2. After closing contact 4I2h2, as soon as contact 356ikl is open during the pause following the second pulse

  <Desc / Clms Page number 20>

 
 EMI20.1
 of current, the HH3 relay is energized in series with the E2 relay, thus maintained energizes: -, H2, 412h2, HH2, 413hhi, 440kl, 467, e 443st2,444p2, +. When contact 409hh2 opens, relays Hl and HI: 1 are switched off again.

   During the third current pulse, after the closing of the contact 356ikï, the contact 41lhh2 is closed, the relay H3 is energized, a relay which, after the end of the current pulse, is placed by sup-! The closing of the contact 4l4h3 with the relata HH3 in a stop circuit C, 'j18 the relay Hh3 also starts to operate. Under the effect of opening contact 4lj) hh3, relays H2 and HH cease to be energized. On the third current pulse, the 368h3 Yi contact has, in fact, been closed, but no circuit is formed through this contact, being '.021i1f'. contact 4961ï, 'is
 EMI20.2
 not closed. On the fourth current pulse, retort
 EMI20.3
 the contact 418hiis is closed, it occurs, p; 1 the intermedia.ire cu contact 356ikl, an excitation of the relay I-i4.

   P-'r 1 'through contact 3ú914, as then being the cj ;;: .i19:.: Th current pulse relay JK5 is ;; :: é .'c8,: 1Gl1t excited and that consequently the'contact 49ilii12 ect;.> :. E zk closed, the following fired "'1" is made up: -,,'; i18, ::; 62b2 ,, jjI: 4, j8p¯, jjlg., 92'- ', l6cal, W4 1, 496il {2, 4jïl, 495p2, +. D: 1'-: this circuit, the relay, '; 4 is energized. It is placed, through the contacts 200p2 and C.> '+ Ir4 (in lE, 1'.1 .. 3) and l :), l its winding II, in a stop circuit. When the Fourth current pulse is terminated, as contact 415h4 is closed, it is formed for relay H4 e :, 1. rl 'i: tex', nui- ary of relay HH4 ul "0ircxÍ c. Stop in which this HH4 relay is excited. Gous! ' effect of opening contact 416hl14, relays ôis and iil: s01 -, [. I711is off.

   If the 356ikl contact is closed on the fifth pulse
 EMI20.4
 current, as contact 423hh4 is closed, it occurs

  <Desc / Clms Page number 21>

 excitation of relay H5. As, during the fifth current pulse, the relay JK2 is also activated, the following circuit is formed after closing the contact 370h5 and through the contact 496ik2: -, Wil8, 362b2, 370h5, 384hh5, 394g2 , 463hl, W5 I, 496ik2, 493bl, 495p2, +. In this circuit, relay W5 is energized. It is placed, by its winding II and 1 through the contacts 200p2 and 205w5 (fig. 5), in a stop circuit.

   When the fifth current pulse is completed, the HH5 relay is energized by the circuit:, -, H5,424h5, HH5, 426gh, G1 I, G2 I, 435hhl, 440kl, .446z, 443st2, 444p2, + . In this circuit, the relays G1 and G2 are also energized, while the relay H5 is kept energized in this circuit. After closing contact 447g2, relays Gl and G2 are placed, by their windings @I, in a stop circuit. Under the effect of opening contact 4I9hh5, relays H4 and HH4 cease to be energized. On the 6th current pulse, as at this moment the 4Ohh5 contact is closed, the relay H1 is energized again via the contact 356ikl.

   As the relay JK2 is also activated during the 6th current pulse, and as a consequence, the contact 496ik2-is closed, the following circuit is made up: -, Wil8, 362b2, 366hl, 373hhl, 387g1, 396g3,464n2 , W6 I, 496ik2, 493bl, 495p2, +. In this circuit, relay W6 is energized. It is placed, through its winding II and through contacts 200p2 and 206w2 (fig. 3), in a stop circuit. After opening contact 356ikl, as contact 408jl is closed, relay HH1 is energized again in the already rewritten circuit. In this circuit, the relay H1 is kept energized.

   Under the effect of opening contact 435hhl, relays H5 and HH5 are devoid of current, while relays Gl and G2, energized in series with

  <Desc / Clms Page number 22>

 The former are subsequently kept excited by the intermediary of their windings II and of contact 447g2. After closing of the 436hhl contact, the GH relay is energized.



  It remains energized after closing the 439gh contact.



  If, during the 7th current pulse, contact 356hh5 is closed, through contacts 422hh4 and 407hh1, relay H2 is energized. Through contact 367h2 no circuit is formed, since contact 496ik2 is not closed on the 7th current pulse. During the pause which occurs after the 7th current pulse, relay HH2 is energized, via contact 4I2h2, in series with relay H2 kept energized at this time. Under the effect @e the opening of contact 409hh2, relays Hl and HH1 are switched off.



  When contact 356ikl is closed for the i3times, relay H3 starts to operate. After closing contact 368h3, as at this moment contact 496ik2 (8th pulse this current) is also closed, the following circuit is made up: -, Wil8, 362b2, 368h3, 379hh3, 39Igl, 4003, 466n2, W8 I, 496ik2, 493bl, 495p2, +. In this circuit, relay W8 is energized. Tl is placed, by its winding II, and by the intermediary of the contacts 200p2 and 208w8 (fig.3), in a stop circuit. After the termination of the 8th current pulse, as well as after the termination of the 3rd current pulse, relay HH3 is energized and switches off, due to the opening of contact 4Ihh3, relays H2 and HH2.

   At the 9th current pulse, as well as at the 4th current pulse, the relay H @ is energized, after which, following the closing of contact 4I5h4 and the termination of the 9th current pulse, the relay HH4 is excited. Under the effect of the opening of contact 4I6hh4, relays H3 and HH3 are devoid of current.

   At the 10th current pulse, as well as at the 5th current pulse, relay H5 is energized, but

  <Desc / Clms Page number 23>

 without at this moment, after the closing of the contact 370h5,, a circuit being closed via this contact, given that the contact 496ik2 is not closed during the IOe current pulse. After closing contact 424h5 and after terminating the 10th current pulse, the following circuit is formed: -, H5, 424h5, HH5, 425gh, G3 I, G4 I, 435hhl, .440kl, 446z, 443st2, 444p2, + . When contact 419hh5 opens, relays H4 and HH4 cease to be energized.

   Beyond contact 448g4, relay Z is energized, via its winding I, in parallel with windings II of relays G3 and G4.



  Relay Z is placed, via contact 326z and its winding II, in a stop circuit. Under the effect of the opening of the contact 330z, the relays N1 and N2 are devoid of current, while, under the effect of one opening of the contact 73z (fig.l), the relay Stl is switched off. Due to the opening of contact 446z (fig. 4), the circuits for relays Gl -G4 -GH, H5 and HH5 are now interrupted. After receiving the criterium assigned to the desired intermediate station3, relays W1, W4, W5, W6 and W8 are therefore energized by means of their windings II (fig.3).

   As a result, among others, contacts 221wl, 224w4, 225w5,226w6 and 228w8 are also closed. But, first of all only the contacts 221w1, 224w4 and 225w5 become operative, so that, through the intermediary of the contact which corresponds to each case and through the intermediary of the contacts 219c2 ', 217cl' and 216p2 ; the WH1, WH4 and WH5 (I) relays are energized. Accordingly, the pyramid of contacts that appears in fig. 3 is set.



  This pyramid of contacts consists of 5 relay stages, so that it has 32 characterization points. Characterization points 1 - 8 are connected to contacts 1 - 18 of the contact bank yes must be scanned by the lewl coupling arm of the select @ r EW1 and, in fact, as the

  <Desc / Clms Page number 24>

 Selector EW1 is a 100 division motor selector, these characterization points are connected in total three
 EMI24.1
 times according to the method indicated in 1s fie. 3 for 18 contact 1.

   Points 19 - 32 of the pyramid of contacts are
 EMI24.2
 connected to contacts 19 -> .2 of the be., ic of contacts which must be scanned by the coupling arm 2E> \: 1 of the selector '!' ;;, 'il, a tripla connection by wires having 8r: /: ., leu: ",. t place j, .xni this case, according to a corresponding method, with the contacts
 EMI24.3
 corresponding to each case da selector with I00 divisions E4 ^ Jl.



  In addition, the characterization points are still connected by wires to corresponding contacts of the banks of switches which are to be scanned by the coupling arms lew2
 EMI24.4
 and read "'3 of the EW selectors <3 and '3; 13. Fig. 3 reproduces only part of the IOO existing contacts and this reproduction extends only: wind up to the coupling arm 3ew1 in the contact banks which must be swept by the coupling arms of the selectors EW1, EW2 and EW3 .
 EMI24.5
 



  When setting the sE: drive E ± 1; 1 corresponding to the point characterized by the con'uact pyramid, a circuit is therefore formed either via the coupling arm le;. Il (points 1-18), or via the coupling arm 2ew1 (points 19-32). According to this
 EMI24.6
 setting, either the coupling arm le \ v2 of selector E '., 2, or the coupling arm lew3 of selector EW3 is switched on and, of these coupling arms, one or the other is rr , 7, the then on a point 'of shrinking of the pyrumid of contacts, which is c & ractTi8éG during the second adjustment of this pyramid of contacts, that is to say in the case corresponding in a corresponding way to excitation of relays W6 and W8.

   In the banks of the contacts cui must be swept by the coupling arms lew2 and all 32 points of the pyramid of contacts are rolled one after another, in total each three times, as it emerges, without further comment. of fig. 3.

  <Desc / Clms Page number 25>

 



   In the present case, point 20 is characterized by the first adjustment of the pyramid of contacts. Retort, after the 215z contact has closed, the El relay and then, through the 231el contact, the ± 2 relay have energized, the Mew1 motor selector input has been switched on by closing of contact 291e2. Selector EW1 is set to advance.

   When the coupling arm 2ewl reaches the contact 20 connected to the characterization point 10, a circuit for the relay EP1 is formed by. -, EPI, C2 ', 278c2', 280cl ', 2ew1 on contact 20, point 20 of the pyramid of contacts, 306wh5, .305wh3, 303wh2, 269whl, 267z, 266p2, + /. Under the effect of opening contact 290epl, selector EW1 is stopped.



   In the aforementioned circuit, the relay C2 ′ is also energized, so that after closing the contact 277c2 ′, the relays EP1 and C2 ′ remain energized independently of the coupling arm Eewl via the contact 279p2.



  Under the effect of the opening of the contact 2I9c2 ', the contact pyramid is broken up. After the contact 320c2é has closed, a circuit is formed via contacts 226w6 and 228w8 for the relays WHI and WH3, so that, under the effect of the new setting, point 21 is then characterized in the pyramid of contacts by: 266p2, 267z, 269whl, 303wh2, 307wh3, 308wh4, 309wh5.

   This point 21 is connected, as already mentioned, not only to corresponding contacts in the contact bank to be scanned by the coupling arm 2ewl, but also to corresponding contacts of the contact banks to be swept by the lew2 and lew3 coupling arms. As the relay EP1 is energized and as, through its contact 254epl and the contact 257sl after the energization of the relay Sl, the relay S2 is energized, after the relay Sl has again been devoid of current , by 1 '

  <Desc / Clms Page number 26>

 intermedia.ire of. contact 212s2 the relay E3 and by the mechanical engineer of contact 232e2,

   relay E4 start to operate. As contact 297e2 'is closed, via contact 296e4, a circuit is formed for the drive of the selector motor Mew3, so that the coupling arm lew3 of selector EW3 searches for the contact characterized 21 .

   This contact exists three times in the contact bank of selector EW3, and naturally also in the contact bank of selector Et'2. The determination for the proper contact search among these three contacts takes place depending on the setting, which a. already taken place, of the coupling arm 3ewl of the selector EW1, As can be seen from figure 3, the contacts which are swept by this coupling arm and which are reproduced in their integral number in figure 3, unlike what happens for the other contact banks, are connected by wires in such a way that contacts 1, 4, etc ... are connected by wires, in the contact bank of selectors EW2 and Ew3, to contact group 1 containing 32 contacts, while contacts 2, 5, etc.

   are connected by wires to Contact group II and contacts 3, 6, etc ... are, connected by wires to contact group III, in the contact banks of selectors EW2 and EW3.



  As the selector EW1 is, in accordance with the characterization of point 20 during the first adjustment of the pyramid of contacts by its coupling arm 3ew1 on contact 20, i.e. on a contact connected by wires to the group of contacts II the selector EW3 is stopped by the coupling arm lew3 after having reached contact 21 dui is in the group of contacts il, and, in fact, this circuit goes through: -, C3 ', 284s2, 283sl, 3ewl on contact 20, 2ew3 on II, EP3, 282c2 ', lew3 on contact 21 in II, point 21, 309wh5, $ 308wh4, $ 307wh3, $ 303wh2; $ 269wh1, 267z, 266p2, +.



  In this circuit, the relays EP3 and C3 'enter into excitation.

  <Desc / Clms Page number 27>

 



  Under the effect of the closing of the contact 285c3 ', the aforementioned relays remain energized independently of the contacts 283sl and 284s2. As, moreover, the contacts of the contact bank to be scanned by the coupling arm 4ewl of the selector EW1 are connected by wires in such a way that the contacts 1 to 3 are brought, according to the indicated method, in the diagram. FIG. 3, at the coupling arm 3ew2, the contacts 4 to 6 at the coupling arm 4ew2 and the other contacts in a corresponding manner, at the following coupling arms of the selector Ew2;

   then to those of selector EW3, the coupling arm 4ewl of selector EW1 which is on contact 20, determined the coupling arm 3ew3 of selector EW3 which has just been set. As this selector is located in contact group II on contact 21, direction 628 is selected by means of coupling arms 4ewl and 3ew3. In a manner corresponding to this selection, the power supply selector SPW, which forms with the installations which have just been described the devices for use, is brought to the setting.

   This occurs as follows: under the effect of the closing of the contact 48c3 '(figure 1); the following circuit is made up: -, A11, 38al, 37s, 47p4, 4803 ', 49p2, +. In this circuit, relay A1 is energized and, by closing contact 34a1, causes relay A2 to be energized. After closing contact 299a2 (figure 3), the Mspw motor selector drive of the SPW power selector is influenced, so that the SpW power selector is set to run. In addition, via contact 48c3 ', the relay A3 is energized (fig. 1), so that this relay causes, via its contact 35a3, the relay to be energized. A4.



  As a result, after closing contact 302a4 (Fig. 3), the Mhw motor selector drive of the HW auxiliary selector is also turned on. Arms

  <Desc / Clms Page number 28>

 
 EMI28.1
 lhw - 3h, r coupling of the HW auxiliary selector are shown in figure 3, while the 4bw - 6hw coupling arms are shown in figure 4 and. the 7hw coupling arm in figure 1. The power supply selector is
 EMI28.2
 and the auxiliary selector H rotate 3.ì: cor; 5 # ;. is until their coupling arms 5spw and Ihw have reached line 1628, characterized by the iritem ;; 4iiaime of the coupling arms if read l 'one behind the other 4ewl and 3er; 3.

   Comice this line is connected to contact 12 of the power supply selector.
 EMI28.3
 Spi tation, after this contact has and ':' reached, by the 5spw coupling arm, the following circuit is formed: -, P5 I, II, Liai16, 246p4, 5SlJW on contact 12: 1628, 5ew3 on II, 21, 4ewl on 20, 286y, 287c3 ', 288z, 289p2, +. On a derivation of this circuit is the relay P5 when the arm
 EMI28.4
 coupling lhw of selector ii? .1 reaches contact 6, in particular via: -, P5, I, II, 2471i, .-. L17, Ihw on contact 6, ié? 8.



  In the aforementioned circuit, the relays P3 3t P5 ce start. Under the effect of opening contacts 298p2
 EMI28.5
 and 30Ip5, the motor selector drives and Whw are switched off. After closing the contact
 EMI28.6
 244p3 or 246p5, relay P4 or F6 is excited in parallel with winding I of relay P3 or P5. Under the effect of the opening of the contact 47p4 (figure 1); the relay Al estmis
 EMI28.7
 switched off, so that, after caelque time, following the opening of contact 34a1, relay A2 also drops out.

   In the meantime, relays 23 and P4, under 1 '
 EMI28.8
 effect of closing contact 245p '' '- (ii ± .-' le â), are placed in a stop circuit passing through contact 243p2.



  After closing contacts 52p4 and 50p6 (figure 1), it
 EMI28.9
 occurs an excitation of the relay ri by: -,: al, 5p4,51y, 50p6, 48c3 ', 49p2, +. After the 54h contact has closed, the U relay is energized on a bypass of the circuit just mentioned, so that after the

  <Desc / Clms Page number 29>

 contact 43u, relay Y is also energized on a derivation of the aforementioned circuit. This latter relay remains energized by means of its contact 46y and independently of contact 43u. Due to the opening of contact 42m, relay A3 is devoid of current, as is relay A4 after opening of contact 35a3.

   Under the effect of the opening of contact 247 (figure 3), the lhw coupling arm is disconnected and for this purpose, by closing the 248u contact, the 2hw coupling arm is connected via the relays Bl and H. From now on, by means of the coupling arm 2hw, which is on contact 6, it is checked whether on the main track, which is available for the selection direction to the intermediate station VSe3 and whose line w2 is shown in figure 5 and only the dotted accesses are shown in figure 2 to the contact bank of the group selector Gwl, there is a free junction line. If so, the abvst3 contact is closed. The following circuit is then made: -, P5 I, II,
248u, Bl, 259tr, 261h, H II, 2hw on contact 6, abvst3, +.

   In this circuit, relay B1 is energized, while relays P5, P6 and H are kept energized. After closing contact 361bl (figure 4), the following circuit is formed: (figure 2) -, Algl II, I26Plgwl, I25ylgwl; I28hgwl, 7aw, I3, B2 I, 36Ibl, 365p2, +. In this circuit, relay B2 is first of all energized and is placed, by its winding II, in series with relay B3 thereby energized, in a stop circuit which passes through: -, B3, B2 II , 33lb2, 342tr, 343bl, 342b2, +. Under the effect of the closing of the contact 359b2, the winding I of the relay B2 is short-circuited, so that the relay Algwl is now also energized.

   Under the effect of the contact closing
I07algwl, relay A2gwl is energized. Accordingly, the Mgwl motor selector drive of the telephone selector.

  <Desc / Clms Page number 30>

 
 EMI30.1
 nique GWl is placed in the following circuit ": i'll, I08 '. \' ol, 112r, 113pgvrl, ll4aZgYil; +. The telephone selector Cli" 1 is consequently set in advance. Retort it then emerges from Figure 2, the contacts to be swept by the coupling arm 5gwl are united in contact segments, and, in fact, each contact segment includes as many contacts as it passes lines in the direction. of traffic can be reached at this position of the telephone selector, not taking into account the last contact of each direction which remains not connected.

   If, for example, 15 directions can be reached, through the telephone selector
GWi, 15 contact segments (only a part of these segments are shown in figure 2) are formed from contacts to be scanned by the cutting arm.
 EMI30.2
 range 56'1, the contact corresponding each time to the last connection of Ijgne remaining free, while the contact segments are connected - one more pole.

   Therefore, during the advancement of the telephone selector G1: 11 and through the oath of cO; ï, t; cLs corresponding to each particular case, a circuit which, in s.1v, - , nt the first group of lines (first oath of corl ta c Ls), goes through:: (figure 4) 1-: 1,! 06hh1; 4IOh1i2, + I7hz3, Lc ^ h =. 4, 1-, i 4Ih.hS, 355b2,. 353k1, 11, 5avi, 10Splr; d; 5Jwl, on the first segment of contacts, +. The relay Ht is consequently energized during this time. Via the contact 366h1, a circuit is prepared at point 1 which is not however closed, since the contact, 6, on the:; uel is the 4hw coupling arm of the selector
 EMI30.3
 tlif, is not connected this point.

   When the coupling brac 5j;: it reaches the last tale and of the first group of lines, which ii'eft not connected to a po t:. 'Iel plus, the following circuit 83t constituted by the ist, cim46.iaire ài ; Co, .t:,:, ct! + GLiz1 and following the disconnection of the potential: -, iil, 408hl, Viril,

  <Desc / Clms Page number 31>

 
409hh2, 440kl, 445b1, 443st2, 444p2, +. In this circuit the relay HH1 is energized while the relay H1 is subsequently kept energized.

   During the crossing of each of the other contact segments by the coupling arm 5gh, the relays h2, H3, H4 H5, etc ... are successively excited in the same way as when receiving the criterion assigned to the intermediate station VSt3 , while each time the last contact of the group of contacts corresponding to each particular case and lacking the potential plus is reached, successively the HH2 relays,
HH3, HH4, HH5, etc ... are found excited. Each time, under the effect of the closing which takes place successively of contacts 367h2, 368h3, 369h4 and 370h5, a circuit is prepared beforehand at the corresponding points, a circuit which is only formed when the auxiliary selector Hw is set in result.

   If therefore, for example, the 4hw coupling arm is on a contact which is connected to point 15, the relay group consisting of the relays H1 or HH1 - H5 or HH5, is influenced three times in succession in the form current pulses. During the third contact closure 370h5, the circuit prepared for this fact is then closed by means of the coupling arm 4hw, to cause a stop of the telephone selector GW1, in the event that this has found in this group a free line.



   As has already been mentioned, by crossing the first group of contacts, the relay H1 has been energized, a relay which is subsequently maintained energized after having reached the last contact of this group of contacts in series with the relay HH1 which is then excited. In the meantime, a circuit has been prepared, through contact 366hl, for stopping the telephone selector GWl. But this circuit is not closed, as has just been indicated, being given that the 4hw coupling arm of the auxiliary selector - -

  <Desc / Clms Page number 32>

 area is on contact 6 which is not connected to point
I of the characterization current.

   The telephone selector
GW1 therefore continues to rotate, When the 5gw1 coupling arm reaches the contact segment of the second group of contacts, as at this time it is the 407hhl contact which is closed instead of the 406hhl contact, it occurs via the 5gwl coupling excitation of relay H27 Under the effect of contact 367h2 closing, il. is preparing a circuit again, but this circuit is not closed, given that point 2 is not connected by wires to contact 6 of the auxiliary selector HW either. The telephone selector GW1 continues to turn.

   If it reaches the last contact of the second group of contacts, the potential plus is lacking, so that the relay HH2, which has thus far been short-circuited, is energized in series with the re. - left H2, which continues to be excited, was given that contact 4I2h2 is closed. Under the effect of the opening of the contact 409hh2, the relays Hl and HH1 are switched on. When the coupling arm 5gwl reaches the third group of contacts, then relay H3 is energized, since instead of contact 410hh2, contact 411hh2 is closed. From now on, a circuit is prepared by the intermediary of contact 368h3.

   This circuit is not closed either, since point 3 is not connected by wires to contact 6 of the auxiliary selector Hw. When the telephone selector Gin reaches the last contact of the 3rd group of lines, the short circuit of the relay HH3 is suspended again, so that this relay is energized by the intermediary of the contact 4I4h3 in series with the relay H3 which remains excited later. Due to the opening of the contact, .. 4I3h3, the H2 and HH2 relays were switched off in the meantime. When the 5twl coupling arm reaches the segment of the fourth group of lines, the H4 relay will

  <Desc / Clms Page number 33>

 find it excited, given that instead of contact 417hh3, contact 4I8hh3 is closed.

   After closing contact 369h4, like contact 6 of the auxiliary selector
HW is connected by wires to point 4, a circuit is closed for the purpose of terminating the adjustment of the telephone selector GWl, as soon as the coupling arm 6gwl finds a free communication device, in this case a transmission not shown in FIG. 2 with a junction line leading to the nearest intermediate station ':. As such a free transmission is characterized by a negative potential, the following circuit is formed: = in the transmission not shown, 6gwl, I2Ihgwl, Pgwl I, II, II7hgwl,
118r, 116d, 119plgwl, 6aw; 12, K I, 363b; 369h4, 382hh4,
392g2, point 4.4hw on contact 6, 489hhl, 494bl,
495p2, +.

   In this circuit, the Pgwl and K relays are energized. Under the effect of opening the 113pgwl contact, the drive of the Mgwl motor selector is switched off. After the 6pgwl contact closes, the Plgwl relay is energized in parallel with the winding II of the Pgwl relay.



   The relay K, which is energized by the intermediary of the winding I, is placed in the interval, after the closing of the contact 352k, by its winding II in series with the winding I of the relay. K1 energized at this time, in a / stop circuit. Under the effect of closing contact 349kl, the relay K1 is first of all kept energized, while the relay K again ceases to be energized due to the short circuit of its winding II, since even its winding I was devoid of current due to the opening, which occurred in the meantime, of the contact 119plgwl.



   After the 120plgwl contact closes, the stop circuit of the Pgwl and Plgwl relays passes through line 13, and through contact 365p2. Line 12 is coupled directly through contact IO6plgwl and line 11 through contact IO4plgwl. After energizing relay K1, the.

  <Desc / Clms Page number 34>

 The following circuit is formed under the effect of the closing of the 332kl contact (figure 4): -, Kl, 335khl, 333kh2, 332kl, 342tr, 343bl, 344b2, +. In this circuit, relay K1 starts to operate.

   Under the effect of the opening of the contact j45kl, it switches off the relay Kl so that, after the opening of the contact 332kl, the relay khl is energized in series with the relay Kl, which is subsequently kept energized by this. made: -, Kl, 339kl, KHI, 342tr, 343bl, 344p2, +. As the communication channel to the desired intermediate station starts at the first group selection stage Gwl, the 75khl contact (figure I), closed after the KHI relay has been energized, is connected to contact 6, on which the ds arm is located. 7hw coupling or Hw selector. Consequently, an excitation of relay St2 occurs by: -, St2, 7hw on contact 6, 75khl, 74p2, +.



  Under the effect of the 78st2 contact closing, the Se2 relay is placed, independently of the 7hw coupling arm, in a stop circuit.



   In the event that it is observed, during the verification process via the 2hw coupling arm, that all the lines are busy towards the desired intermediate station VSt3, therefore if the abvst3 contact is open, the relays P5, P6 and H are devoid of current, so that the selector HW, after the relay u has itself been switched off by opening the contact 50p6 and after the relay A4 (35a3) has been energized again following the The excitation of relay A3 (42u) is switched on again and checks, by means of its coupling arm 1hw, whether a diverted path is planned for the selected direction.

     As this is not the case in the present example of execution and as a consequence, the contact 262y, closed after the energization of the relay Y, is connected by wires to the contact 12 of the supply selector Spw, reached by the arm. coupling 4spw. the auxiliary selector continues to

  <Desc / Clms Page number 35>

 turn until it reaches contact n, ae so that the following circuit is formed through the coupling arm 1hw, located on this contact: -, P5 I, II, 247u, 249y, 1hw on contact n, 262y, 4spw on contact 12, wil5, 243p2,4, 1) In this circuit, relay P5 is energized and switches on, after. closing of its 24op5 contact in parallel with its winding I, relay P6.

   The Mhw motor selector drive is switched off again. It can now be provided a busy signal or the coupling of an extension can be. provoked.



   If, in this case,. junction, only the last junction line is still free, that is to say a line connected with a contact, whose contact in question, which 'can be reached by the coupling arm 5gwl, is not not connected to a plus potential, before the relay HH4k which operates under the effect of disconnection of the plus potential is energized, the circuit already mentioned for the pgwl and K relays is formed via the contact 369h4. After this, a stop circuit is also closed for the above mentioned fires via the .contact 364k, in order to prevent, during the energization of the relay HH4 which then occurs and during the subsequent opening from contact 382hh4, switching off relays Pgwl and K.



  Via the contacts 38Ihh4 and, 380b3, now closed, no circuit can be formed any more for the relay Tr, given that this relay is short-circuited via the contact 352k. What is more, such a circuit is then only formed if, via the line connected to the last contact, for some reason there is no excitation of the relays Pgwl and K.



  Relay Tr, which is then energized, causes the opening of contact 342tr to switch off relays Q and QH

  <Desc / Clms Page number 36>

 energize if need be in other cases of junction and
 EMI36.1
 Maternent suspends, by opening the contact c59 tr, the 31ege cu selector HW, so that the latter, at the C2S where there is a channel d,:; LOUrl1Ge, searches for a given contact, or in the case present, where there is no bypassed route, is requested to be set on contact h,
As, according to the hypothesis which proceeds, a free transmission figure 5:

     De ;? ') is reached in the present case and as, consequently, the relay St2 has energized and has placed itself in a stop circuit, 11 occurs, after the closing of the contact 329st2 (figure 4 ), excitation of relays N3 and N4. Under the effect of the closing of the contacts 449n3- 458n4, it is then prepared, depending on the excitation of the relays W1 -W10, various circuits, partly for the Jg4 relay and partly for the Jg5 relay.
 EMI36.2
 



  In this case, given that the relays ',? Il,; \' 4,, v5, t, a6 and w8 are energized, circuits so; it prepared for the relay JS5 at the following contacts: 449n3 and 470wl, 1 + !. 2r1 and 476w4, 453n3 and 478.5, 454n4 and t lF 8 0 ;. <ô, 456n4 and t 48l + s; 6. At the remaining contacts, the circuits are prepared for relay Jg4. These prepared circuits are used successively
 EMI36.3
 ment by the group of relays already E, -2,, iDlorinated several times and consisting of relays Hl or EH1, H2 or HH2, H3 or HHS, H 4 or 'rii4, H5 or HH5, by means of contacts j66hl - J70h5 of this group, and in fact by a twofold influence in the form of pulses (the current.

   But before the coupling processes take place, like
 EMI36.4
 when relay St2 was energized, the: r # .. is Z was: a:, s off circuit due to the opening of contact 328st2, as was relay C3 'due to the opening of contact 267z (FIG. 3), the relays U and Y are then switched off under the effect of the opening of the contact 48c3 'so that even the relay B1 (248u being open) was devoid of current. Under the effect of opening the contact

  <Desc / Clms Page number 37>

 343bl (figure 4), the relays B2 and B3 are then also switched off.

   It is then supplied, according to a method which will be explained in detail later on the subject of transmission Ue2, from the transmission occupied in the interval (Ue3 '), to the intermediate station VSt3 and after coupling of a communications standard which is also provided therein, a starting pulse which, via the coupling arm 4gwl, the lower conductor of the four-wire line, the coupling arm 3aw and the contacts 68st2 and 71stl, excites the relay Stl . This relay Stl is placed, after the closing of the contact 72stl via the resistor Wi7, in a stop circuit. After closing the contact 43Istl (figure 4), the following circuit is now made up: -, Jgl (wil9), 432ig3, 43istl, 430b3; 429n3; 428g4, 427p2, +.

   In this circuit, the relay Jgl is energized and causes, after closing of the contact 433igl, the energization of the relay Jg2, so that the latter switches on, through its contact 434ig2, the relay Jg3. Under the effect of the opening of the contact 432ig3, the relay Jgl is again devoid of current to switch off, by opening the contact 433igl, the relay Jg2 which then causes the relay to drop itself, via the opening of contact 434ig2, relay Jg3.

   The relays Jgl, Jg2 and Jg3 therefore function as switches so that through contact 357ig a circuit is closed in the form of current pulses, a circuit in which, as when receiving the criterion correspondingly to the activation of contact 356ikl, or as during the adjustment of the telephone selector GWl under the effect of a control via the coupling arm 5gwl, the relays Hl or HH1, H2 or HH2 etc ... of the group of relays are successively influenced. As a result, contacts 366hl - 370h5 are one closed / after the other.

   Whenever one closes. - of these contacts, the Jg4 relay is energized if the corresponding resistance relay W is not itself energized, while

  <Desc / Clms Page number 38>

 that the Jg5 relay operates when the corresponding resistance W relay is energized.

   Whenever relay Jg4 is energized, contact 70ig4 (figure 1) is closed, as is contact 69ig5 when relay Jg5 is energized, so that through the coupling arms 3aw and 4gwl current pulses weak (70ig4, re-
 EMI38.1
 distance vTi6) or strong (69ig5) as a consequence are supplied to the transmission (figure 5: Ue2 '), These current pulses cause in the transmission the emission of a corresponding criterion which consists, like the criterion received, of 10 alternating current pulses of the frequency of 600 c / s, one alternating current pulse of the frequency
 EMI38.2
 quence of 750 c / being supplied to each of the 1st, 4th. , 5bme, 6ee and 8th alternating current pulses.



   After energizing relay H1, when contact 357ig2 is closed for the first time, it is triggered first of all, inter alia via the contacts.
 EMI38.3
 366hl and 373hhl, 386gl, 449n3; and 470'l, an excitation of a relay Jg5, so that a large current pulse is supplied <;. the transmission ('i: ure 5: Ue') p2r Llterméc.i- ary of contact 69ig5 (figure 1). Therefore, from the transmission, a current pulse is emitted to the
 EMI38.4
 frequency of 600 c / s and a pulse of co: .ra zt at the frequency of 750 c / s, according to a method which will be explained later with regard to the transmission Ue2. Indeed, the relay iiiii is energized according to the method already explained several times, during the pause between the current pulses.

   During
 EMI38.5
 the second closing of contacts 35 # iß, relay E2 starts to operate. As the relay \ 12 is not: lis in action and as the contact 471 W2 is e: co. "- ciz ce = this closed, the relay Jg4 is ;;: cited by 1.'internate; iaire of contact JL71 # 12. It is emitted8,; J, sr l'L1Le1 "miÔ.i '; ll'o cu co.; t.:. ct 70ig4 (figure 1), as second current pulse, only 'a

  <Desc / Clms Page number 39>

 low current pulse, so that from transmission it is only emitted an alternating current pulse of the frequency of 600 c / s.

   Such emission of current pulses also takes place during the third current pulse after energizing relay H3, while during the fourth current pulse, by which relay H4 is energized, due to the closing of the con- troller. tact 476w4 under the effect of the frequency of relay W4, the relay Jg5 is energized and causes the emission of an alternating current pulse of the frequency of 750 c / s apart from the emission of 'an alternating current pulse of 600 c / s. In a corresponding manner then takes place 11. following the transmission of the criterium, in which the relay group passes twice as for the reception of the criterium.



  In this case, as has been said, at the moment of the relays 1.Il, W4, W5, W6 and W8 are energized in addition to the 1st, 4th, 5th, 6th and The second alternating current pulse, an alternating current pulse of 750 e / s is then emitted. This last pulse causes the intermediate station to reach VSt3, according to a corre- sponding method, the setting of the communications standard connected in view of the control of the selection stages, as has just been explained with regard to the current passages shown in Figures 1 to 4.

   When the criterium has been moved to the nearest intermediate station, as during the 10th current pulse, among other things the G4 relay has been energized, the following circuit is made: (figure) -, DI, 82r, 4aw , 81g4, 80y, 79st2; 74p2, +. In this circuit ,. relay D is energized and is placed, via its winding II (figure 2) and via contact 115d, in. series with: Pgwl and Flgwl relays, in a stop circuit.



  Under the effect of the closing of the Iod contact (figure 1), the relay Dl is energized by the contact 5r and, under the effect of the opening of the contact 28dl, the release of the selector

  <Desc / Clms Page number 40>

 
 EMI40.1
 coupling 11'l and, by ld: 1: i18, of the cie standard COlila1üt11C.10I? S
 EMI40.2
 common VS, is caused by a method that matters:;: to
 EMI40.3
 here 'Via the dl contscts, located on the = line conductors, takes place the coupling to ¯1CC of 3 lines with four wires towards the tr;?, r; si.1Íssion (figure. 5: üe2 ') and by the end of this transmission and a 11 [08 de Jonc-
 EMI40.4
 corresponding
 EMI40.5
 tion / (figure 5: '\ '12) to the post-intermediary 2St.

   The continuation of the establishment cie the COi1l:; 'JI1icctio .: could not be completed in any way (see description 3s.J (; r :. <i..E. of 12, fiu, re 5). After the coficl.: Sio. = De le. conversation has Heu the release of the way of co., iinu # icz. tio # i made contact 21'1 "closed according to a trigger pulse - e-
 EMI40.6
 ment, rejects relay R which, under the effect of opening
 EMI40.7
 of its contacts, brought to the idle state all the 6 coupling elements and the selectors set of the
 EMI40.8
 communication.
 EMI40.9
 



  If, instead of IL cunnunication which needs to be described, it is a communication to uJ.:.:ut:cc: extension intr '.' Tib- 0.i.:. Ire, 9 [;) '" example the station ili, t ":, vC; i> 11'e VS'L, 4 1 - ure 5) which must be 6 Italy; it will be emitted by the post jh8r;:; "i- places in front VStl another criterion. This cliterium consists, as it appears from the; ï'Oü¯eû of median and inferior lines, represented d '.?' 1S figure 6, in the fact that, for example during the production of the 10 current pulses' -'lteLI1:, tif of 18 frequency ô.a 600 c / s, it is emitted, in more than the 6th and the 8th pulse 'ie running an alternating current pulse of 750 c / s ..' this effect, the keys T'6 * eh T8 (figure 5) must therefore be changed position, so that the relay J55 'enters into excitation during the 6th and 8th excitation (: 1.1. but Jg4'.

   The 600 and 750 c / s contacts, actuated in cOL2equence at the intermediate station VSt2 by the cooperation of the 600 and 750 c / a relays, cause an action on the JK1 relays.
 EMI40.10
 and JK2, such as relay JK2, during the 6th and

  <Desc / Clms Page number 41>

 the 8th closing of contact 356ikl, by which relays Hl or HH1, H2 or HH2 are successively influenced; exc-ite, through its 496ik2 contact and the contact
366hl or 368h3 (2nd revolution of the relay group: Gl and G2 excited) closes at this time, relays W6 and W8. These relays are placed, by their winding II and through the 206w6 or 208w8 contract, in a stop circuit.

   The contact pyramid remains in the position shown in the figure.
Sure 3, so that point 1 of this pyramid is charac- terized. This point is connected by wires to corresponding contacts 1 in the series of contacta swept by the coupling arms lewl, lew2 and lew3, which is however not fully indicated in figure 3. After the excitation of relay Z, the following circuit is made up: -, EP1, Cl ', 275cl', 274c2 ', lewl on contact 1; point 1, 273wh5, 272wh3, 270wh2, 268whl, 267z, 266p2, +. In this circuit, the relays EP1 and X1 'come into excitation. When the 290opl contact opens, the selector drive with Mewl motor of selector EW1 is switched off.

   The two relays mentioned are placed, by means of contacts 276cl 'and 279p2, in a stop circuit. Since in the meantime the relays S2, E3 and E4 have been energized, the motor selector drive Mew2 of selector EW2 is now switched on via contact 294cl '.



  Before energizing relay E4, an adjustment of the contact pyramid took place. Then, as the contacts 218cl ', 226w6 and 228w8 are closed, the relays WH1 and WH3 are energized. After which point 21 is characterized in the pyramid of contacts through the contacts 266p2, .267z, 269wh1,303wh2, 307wh3; 308wh4 and 309wh5. Now the selector EW2 turns, and this until its coupling arm isw2 reaches point 21 of the pyramid of contacts.



   As the contact segment I is characterized on the coupling arm 2ew2 via the coupling arm 3ewl

  <Desc / Clms Page number 42>

 of selector EW1, which is on contact 1 according to the first position of the pyramid of contacts, there is: - a stop of selector EW2, as soon as the lew2 coupling arm reaches contact 21 located in the contact group I. A
 EMI42.1
 circuit then goes through: -, C ', 284s2, 28jst, 3agi on contact 1, 2e \' (2 on I, EF2, 28Icl ', lew2 on contact 21 in I, point 21,, 9wi15,) 19h , 307wh: 5, j0 'Jllr, 269'1; [11, 267z, 266p2, +. Selector EW2 is therefore stopped inside the first group of contacts on contact 21.

   Like the arm
 EMI42.2
 coupling 4exil of selector EW1 is located on contact 1 according to the first position of the pyramid of contacts, the coupling arm 3ew2, which can be reached via this contact, is characterized, the control arm 3ewl coupling located on contact 21 in the first contact group, i.e. a selection potential is
 EMI42.3
 applied via line 121 to the spi selector and, in fact, to the contact 14 of this selector which can be reached by the 5spw coupling arm. Now the selector already
 EMI42.4
 SpW runs like / d.4ci <ite, J.Lis <¯u'à, c '= that the coupling arm 5spw reaches contact 14, by 7.' i: .tewûûiaire a-uquel P3 st, the rela.is/P4 are s; ccessively excited for the purpose of stopping the selector Spw in the manner already described.

   Likewise, the selector HW is adjusted, in accordance with the selection and through the intermediary of the line 121 which is connected by wires in the bank of contacts of said selector, to the co: tact j which can be reached.
 EMI42.5
 by the I11N coupling arm. Through the insertion of this contact 3, the rel - :. is P5 and r6 are successively energized, after which the Zizi, U and Y relays are also ;;: 1 ± again. in circuit. Under the effect of the opening of the contact ¯.47u, the coupling arm lhw is again dcconnexted and through the intermediary of contact 248u, the coupling arm 2iu. c2t connected.



  If the principle channel, the (figure 5: Ue2 - .Î-3 Uej) men8.nt to the desired intermediate station VSt4 is free, that is to say if the abvst4 contact is closed, it is formed by the intermediary

  <Desc / Clms Page number 43>

 of the coupling arm 2hw a circuit for the relay B1, circuit in which the relays P5, P6 and H are subsequently kept energized. Correspondingly, the coupling arms 4hw - 6hw (figure 4) are located on the contacts 3 and characterize, in this case, the same point3. naturally, they can also characterize different points.

   From now on, the group of relays Hl -H5, with its auxiliary relays HH1 - HH5, is again influenced in a determined manner during the advancement of the selector Gw1 by the potential plus to the contact segments scanned by the coupling arm 5gwl, in order to prepare successively, by means of their corresponding contacts, as before, circuits for stopping the telephone selector GW !, Such a circuit is closed immediately after action on relay H3 (contact 368h3) by means of the 4hw coupling arm, if the telephone selector GW1 finds a second free telephone selector GW2 in the third group of contacts, the following circuit is then formed:

     (fig. 2) -, Wi9, I38cl, I4Oc2, C1, I4Iagw2, I42wo2, 6gwl, I2Ihgwl, Pgwl I, II, 117hgwl, II8r, II6d, II (plgwl, 6aw, '12, KI, 363b2, 3bhH3h3, 379hH3h3, , 390gl, point 3, 4hw on 3, 4c9qhl, 494bl, 495p2, +. After the excitation of the Pgwl relay, the telephone selector GW1 is stopped. To this are attached the coupling processes already described. relay K, the relay Kl is energized again and switches on, via its contact 332kl, the relay Ql.



  If the relay Kl is devoid of current by opening contact 345ql, as contact 339ql is closed, after opening at contact 332kl, relay QHi is energized in series with relay Ql which remains energized later.



  Under the effect of opening the contact 489qhl, the 4hw coupling arm is disconnected, while under the effect of closing the 490qhl contact the 5hw coupling arm is connected. As the 75qhl contact (figure 1) is not connected by wires to the contact 3, nor in the above description to the contact 6, it does not happen this time no!

  <Desc / Clms Page number 44>

 no more excitation of relay St2. Due to the setting of the telephone selector to the free telephone selector placed after Gw2, relay C1 is also energized in the circuit of relay Pgwl.

   It in turn excites, by opening
 EMI44.1
 in 1 same circuit relay 02. After closing of contact I5c2, l, ure of contact I38cl, the following circuit is constituted: -, C3, I57cl, 155c2, 135won (G - '.'; 2 to 1.3 = asitio: = rest), +.



  In this circuit, the relay Cj was energized, while in the meantime the relay C1 was cut off by short-circuiting through the contact 139c2. Relay C3 is subsequently maintained energized by means of its contact 158c3 and independently of contact I57cl. After the excitation of relay C1 has ceased, the following circuit is
 EMI44.2
 constituted. -, Agw2 (:,; ill), i ^ IilO, Z56plva 2, 152c3, 151cl ', 150c2, +.

   In this circuit, the relay Agw2 is energized and closes at its contact IJge, g \ 'r.2, through the contacts I48p5w2 and I46c3, a circuit for the motor selector drive XSi'l2, so that the tJlepllOnique selector J, i; 2 is set in advance and sets to c Lion, during the successive scanning of the contact segments endowed with the plus potential, the relay of the relay group Hl - H5 (i-ü-: 1 - tiri5) determined successively by the coupling arm 5gw2 the Ions of line 11, so that the corresponding contacts, closed successively, again prepare as before
 EMI44.3
 circuits for stopping the GW2 telephone selector.

   Jan such circuit is already closed. '- by energizing relay H3
 EMI44.4
 (contact 368h3) when the telephone selector GiÎ2 s. found a free telephone selector placed after, for example the telephone selector GW3 The circuit si.liva.:t; is then closed -, wil2, 164c4; I65c5; C4, 167agw5, 168 \ '103, 6gw2, Pb \' {2 I, II, 143c2; 137cul, Ij6plsw ?; 2; wl, 103d1, iC61Dl- @ wl, 6aw, 1 2, K I, 565boa, 368h3, 379hh3; J90gl, point 3, 5hw on contact 3, 491qr2, 490qhl, 494bl, 495p2, +. In this circuit, the mentioned relays are energized. When the Pgw2 relay is energized, the motor selector drive

  <Desc / Clms Page number 45>

 Mgw2 is switched off at contact I48pgw2.

   When contact I45pgw2 closes, relay Plgw2 is energized in parallel with winding II of relay Pgw2. Via contact 144plgw2, a stop circuit is closed for relays Pgwl and Plgw2. Relay Agw2, kept energized by means of shaft contact I54wo2, is switched off by opening contact 156plgw2, while relay C3 has already been switched off when the telephone selector GW2 was first advanced, by opening the shaft contact I53wo2. The Mgw2 motor selector drive is switched on over the 147wo2 shaft contact.

   Under the effect of the excitation of the relay K, the relay K1 is again switched on via the contact 352k (shown; 4), this relay K1 energizing at its In turn, through its contact 332kl, the relay Q2, since. now instead of the contact 335qhl, it is the contact 356qhl which is closed. In the meantime, relay K has again ceased to be energized. Under the effect of opening contact 347q2, relay K1 is also switched off. After the opening of the contact 332kl, an excitation circuit is now formed for the relay QH2 by means of the contact 340q2, in series with the relay Q2 May ... then kept energized.

   Under the effect of opening contact 491qh2, the 5hw coupling arm is disconnected and under the effect of closing 492qh2 contact, the 6hw coupling arm is connected. As contact 76qh2 (fig.l) is not connected to contact 3, relay St2 is not energized either. In the telephone selector GW3, under the effect of the excitation of relay C4, the short-circuit of relay C5 is suspended from contact 164c4 so that this relay is also energized. As a result, relay 06 starts to operate by: -, 66, 182c4, 181c5,18cwo3.4. When contact 1 66c5 closes, relay C4 is

  <Desc / Clms Page number 46>

 
 EMI46.1
 short-circuited, while relay c6 is maintained subsequently now energizes via its contact 1 & 3c6.

   After the end of the excitation of the delay '4, the following circuit is constituted: -, A;' '3, (' i14), ',, i13, IS4p1zw5, 178c6, 177c4, 176c5, +. After closing contacts 17206 and I75aeiià, the selector motor drive gw3 is DC Influence done, so that the telephone selector G \ '13 is put into forward motion. But the relay group Hl -H5 (HKl - 11 "15) is again influenced in a determined way by the potential plus at the various segments determined by the potential plus au: è.iVSY'2 s8C; meuts co," - tacts which are swept by the coupling arm 5à'ris, the lonc of line 1 1, to prepare prc'âe ::,. :: eldert au. by means of the corresponding contacts of the circuits for stopping the telephone selector G., '3.

   Already after three pulses this current, that is to say after the closing o.t # contact b1J &1.; 5, the resulting circuit is formed by lti1tcl '[le <I: L: .ire of the br-.s this coupling 6hvi, in the case where the; lo.E of coupling u'.v3 a 2 i, ;;, 7.:it a 'i, r'.5: 11: LS5i0Y? li..î'e, by i;.; 1 = ple "Cs2: 7," 1,: ...;, 1. ':.',:, 1, II, 169 = j, I6 jC4, Iô ± pd.jj% .15, 2, r2, ISpl, r, 2; ',. 1, ICrw.l., IOÓ: Jl:.;. L 68 \ l, ézw, lu, K 1,) 63 b2 , j5Ei.15,.> 7ii, J,.:; SCl, point>, s; ,, ...: ':', 1r contact 3, J + 92c; 1.2, 490qhl, 4p94'g1, 495P2 , 4.

   B. n this circuit, the relays C7, Fii.iâ and K se :: 7G i, was a functio i> 1 r..o..i '. -L 1 '3. '.:, the closing of the contact 185c7, the transmission Ue2 is, requested to emit, by means of relay A, according to a
 EMI46.2
 any known method that matters little here, an impulse
 EMI46.3
 occupancy audible frequency of 750 c / s on 10nc ae la. lipne '.; 3 (fi, L: .5), to the intermediate station' ist4.

   Under the effect of the excitation of the rc'iris F2 \, jj, the rel-ls Fl'i (10) is e> ?. City, by l! iDt0; mC-; é-j, 3ir'2 du. contact I7Iyy, and in parallel with winding II of relay Pii.J5. 50 s the effect of the opening of the contact I 7-Fyt-; yl], l 'C: i tY'S.lîlC: C.ti, i, = .ù:.-Motor elector F. =; .15 is, again put out of ci.rcu: '1 ,, 1 .:

    <ii> iz q.'e under the effect G.0 closing the. contact I70pylyv, a stop circuit is

  <Desc / Clms Page number 47>

 closes for the relays Pgw3, plgw3 and c7, On contact 184plgw3, the relay Agw3, kept energized by means of the previously, the relay C6 has been deprived of the contact current of the shaft 179wo3, is switched off, after that , under the effect of the opening of the 180wo3 wave contact, Under the effect of the closing of the 159plgw3 and 161plgw3 contacts, direct coupling takes place on the Ue2 transmission. Under the effect of the energization of the relay K, the relay K1 is again connected, this relay in turn energizing, via its contact 3321 \ 1, the relay Q3, since instead of the contact 333qh2, contact 334qh2 is closed.

   Under the effect of the opening of the contact 350q3, the relay Q3 switches off the relay Kl again, after already subsequently the relay K a.- has ceased to be energized in a way that a. been described several times. As contact 34Iq3 is closed, relay QH3 proves to be energized in series with relay Q3, which is subsequently kept energized. Via contact 77qh3 (fig.l), which is connected by wires to contact 3, on which the coupling arm 7hw is located, the relay St2 is energized.



   In the meantime, after the occupation of the Ue3 transmission at the intermediate station VSt4 by the busy pulse at audible frequency, as has already been indicated on the occasion of the occupation of the transmission Uel (xx fig.l) of the intermediate station VSt2. the connection of a free communications standard took place via a coupling selector. Then, next to the excitation circuits, corresponding circuits were formed for the relays St and Stl (fig.l). As a result, a start signal is transmitted to the Ue2 transmission. 'of the intermediate station arranged in front of VSt2 (fig.2) By this very fact, contact I88st2 is closed in any way.

   The less applied potential therefore via the resistor Wi22 energizes the relay Stl through the arms, by

  <Desc / Clms Page number 48>

 
 EMI48.1
 coupling 4gw3, 4Gw2,4gwl, 87dl, 3a ,, r, 68st2, 7Is tl, Stl, 74p2, + This rolais S tl is again placed in a stop circuit, while, in the meantime, the resistance Wi22 has was disconnected in transmission Ue2 due to the opening of the I89um contact and, in its place, the relay group jg4 "/ jg5" was connected.

   After the. contact closure
 EMI48.2
 43Istl, the relay switch Jgl / jg3 is switched on again, so that, via contact 557ig2, the relay group Hl - H5 is influenced in the form of a pulse.
 EMI48.3
 , current sions, to influence s. relays jg4 and j65 in turn depending on the excitation of relays W1- d10, given that then, the reverse of what happens when receiving the criterium, it is not relays N1.N2 which
 EMI48.4
 are energized, but relays N3 and, 14, ot, on the other hand, to influence accordingly, via contacts 70ig4 or 69ig5 (fig.h) and beyond the coupling arms 3 aw,
 EMI48.5
 4gwl, 4z-r'2, and 4gw3, the J54 "/ JS5" relay group provided in the Ue2 transmission.

   These relays cause, through their contacts IgI / I92ig4 "and I93 / 194ig5" a corresponding output of alternating current pulses and, in fact, another 10 alternating current pulses are emitted.
 EMI48.6
 native of the frequency of 600 c / s etil o - t, emitted in addition an alternating current pulse of 750 c / s in addition to the 6th and 8th current pulse, given that during these pulses the relay Jg5 is energized by the intermediate of contact 480w6 or 484; r8.

   This characterization then helps the intermediate station reached VSt4, in a manner analogous to that which was previously described for the re-
 EMI48.7
 ception at the intermediate station VSt2 (i'i; .l 4), an energization of the relays corresponding to the provided relays 1 to W6 and l18, so that according to the method already described, in this case also a corresponding adjustment of the selectors takes place of this post.



  All the other coupling processes then proceed according to the method already indicated several times.

  <Desc / Clms Page number 49>

 



   As emerges from FIG. 5, there is provided, apart from the main track, the establishment of which has just been described, another bypass route, for example beyond
W2 -VSt3 - W4. As a result, the contact I4 reached by the aspw coupling arm (fig. 3) and corresponding to the intermediate station VSt4 is connected -, a contact for example 6, in the selector Hw, which can be reached by the arm lhw coupling.

   If there were still other bypassed paths, the contact 14 not shown in the drawing boards and which can be reached by the coupling arm 2spw, in the selector Spw, would be connected by wires to another contact of the bank. of contacts, to be scanned by the coupling arm lhw, of the selector Hw and in the event that there is still another diverted path the contact 14 not shown and which can be reached by the coupling arm 3spW would be connected by wires to a another contact of the same contact bank of the HW selector.

   In the present case, there is thus' as has been said, only one diverted channel, so that, in the event that all the lines of the main channel are characterized as occupied by the open contact, after reversal on the 2hw coupling arm as a result of the 288u contact closing; relays P5, P6 and H are devoid of current. in advancement
The Hw selector is consequently put on subsequently / and this until its coupling arm lhw reaches the 'contact
6. The following circuit is then constituted: P5 I, II, 247u
Wil7, ihw on contact 6, 1spw on contact 14, 236yhl,
Yl, 234y, 233p2, +. In this circuit, relays P5 and Yl, also soon after, relay P6 are energized.

   According to a method of the selector several times described there also occurs, in addition to a stop
Hw and excitation of relay U. After opening of contact 247u, relay YH1, previously short-circuited, is energized via contact 235yl, in series

  <Desc / Clms Page number 50>

 with relay Yl, then kept energized. Under the effect of the 248u contact closing, it is then checked, via the 3hw coupling arm, given that the relay R is devoid of current, whether the diverted channel characterized still contains a free line. beyond the intermediate station VSt3. If so, the abvst3 contact is closed.



  If all the lines are busy (abvst3 being open), relays P5 and P6, energized successively, are again devoid of current and the HW selector turns from;, to high. link as if to characterize that there is only one bypass path, the closed contact 263yhl is linked by
 EMI50.1
 wires to contact 14, the H'.V selector turns until it reaches contact n and it is then stopped, either to activate a busy signal, or to trigger the. con
 EMI50.2
 nexion of an auxiliary station, thus had n u6jà been indicated in the first case of junction.

   If, on the other hand, an 11; do
 EMI50.3
 junction is still free, the rclajs s 1] 1 is excited via the contact abvst3 and the coupling arm> 1Wl l and henceforth causes an r (; lc'8e of the telephone selector Ci.Il correspondingly to the adjustment of the coupling arm 4hw on contact 6, that is to say that the selector t'JIsphonique G, Jl will occupy a transmission with a link, lJe leading to the intermediate station VSt3, like this already been described in the debate After occupying this transmission; as no other selection stage must be set by the common communications standard, it occurs:

  . then, according to the method already described, a direct coupled and an emission of the busy pulse. After coupling a free communications standard, it is then again
 EMI50.4
 provided the signal to G¯El2i ',' Il! station l. '\. I-.r; j14ti (]. ir8 \ / S2, so that the criterion of station i; ltt'2 ":,:.' i :). i: cc VSt4 2S: J sent to the unusual post Vit3, and. ,, e.:

  . s. t, it is issued

  <Desc / Clms Page number 51>

 the same criterium (fig. 6) groups of middle and lower lines) as after the adjustment of the 3 selection stages GWl- GW3 on a junction line to the Intermediate station VSt4, being, gives that, as before, the W6 and W8 energized relays determine the emission of the additional 750 c / s alternating current pulse. After that, the communication standard is released at the intermediate station VSt2.



  At the intermediate station VSt3, the criterion is then used in a corresponding manner, so that the intermediate station VSt4 is reached by del, the selection stages set correspondingly, As has already been described for other communications. Occupation of the communication channel then takes place (fig. 5: for example W4) and, beyond this channel, after receipt of a start signal, the transmission of the criterion from the intermediate station VSt3 to the intermediate station. - area VSt4. All other coupling processes are carried out correspondingly.



   If a communication channel has to be established via a larger number of intermediate stations, for example, in a large remote network, the setting of the selection stages proceeds from intermediate station to intermediate station, the criterium being transferred from intermediate station to intermediate station.



   In the explanations which have been given so far both the ten pulses of alternating current and the additional pulses of alternating current were emitted by the intermediate station placed in front. However, it is also possible to adopt an arrangement in which the ten alternating current pulses, which serve to a certain extent to synchronize the coupling devices at the two intermediate stations of each particular case, are transmitted by the intermediate station arranged afterwards.

   This could take place, for example, in the following way:

  <Desc / Clms Page number 52>

 If, for example, after the setting of the three hostages
 EMI52.1
 of select, ion GW1 - G'3 18 transmission Ue2 and, for the intermediary of line '.3, the Lrs. "s # lission Ue) (fie; .5) have been occupied, it is not then no start signal emitted from transmission Ue3. -3i8n more, there is ..ns CI) turns on a relay switch corresponding to the relay switch jEl / Jz5, which emits in E <i3s8n :, in the form of current pulses on a corresponding relay group
 EMI52.2
 to the relay group Hl - H5 (HHl-HH5) ten current pulses.

   These pulses arrive in the form of alternating current pulses at the intermediate station placed: forward VSt2 and influence there, pares having been transformed into pulses.
 EMI52.3
 direct current sions, by 1 terminal of a contact, O1¯11 is actuated after contact 357ig2, 1st group of relays Hl - H5 (HHl - EE5). nux two intermediate stations - therefore take place a progressive action in the form of current pulses on the two groups of corresponding relays;

   At the intermediate station arranged in front of VSt2, the contacts 366h1 - 370h5 are then successively terminated in a direct operation in two times, as well as contacta corresponding to the intermediate station arranged after VSt4. Like him
 EMI52.4
 :

  .'exists then at the intermediate station arranged in front V3t3, no relay Jg4 no more than contact 70ig4, it is only constituted by the intermediary of the aforementioned contacts of the group of relays, a circuit when the relay Jg5 is connected by the 'intermediary of inverted contacts of relays w, it is
 EMI52.5
 to say, in the present case (v <'6 and w8 being energized together at the desired intermediate station VSt4) after the 8th current pulse of the series of current pulses arriving from the intermediate station VSt4 has been cut.

   The contact 69i55 P1 "1 Cii 'consequently, after the 6th and the 8th current pulse the emission of a current pulse transformed into alternating current towards the intermediate station VSt4, so that there, after transformation into direct current, a corresponding relay

  <Desc / Clms Page number 53>

 due to relay JK2 (the relay corresponding to JK1 missing is, miexaction. Via a contact corresponding to contact 496iK2 a relay corresponding to relay W6 or W8 is then activated, given that at the moment of the activation of the aforementioned contact such a relay is connected.



   ] The criterion corresponding to fig. 7 is then received at the intermediate station VSt4 for the purposes of further establishing the communication. The alternating current pulses can then have the same frequency. Instead of IO pulses of alternating current, a smaller number of current pulses can also be emitted. The possibility of combinations must then be increased by the use of several frequencies, as indicated, for example, in fig. 8. In this case, it is produced, during 5 current pulses (600 c / s), additionally by the combination with two frequencies (600 c / s and 750 c / s), the necessary criteria such as elements of constitution.



   While, in the example of execution described above, the relays Wl - W1O, influenced by the characterization cause the setting in one go of a single pyramid of contacts, it can also be taken a arrangement in which, on the relays influenced by the characterization, one part requests a pyramid of contacts for adjustment and the other part / another pyramid of contacts.



   These contact pyramids can then be formed essentially from the contacts of the relays which are decisive for the adjustment of the contact pyramid. Such an embodiment is mentioned in FIG. 9. Depending on the relays
Wl - W5 a pyramid of contacts I made up of contacts W1 ..... W5 of these relays is set, while according to relays W6 - W10 another pyramid of contacts II made up of contacts of these relays.

   According to fig. 3, or it is the EW1 selector (coupling arm

  <Desc / Clms Page number 54>

   lewl or 2ewl) which adjusts according to the setting of the contact pyramid I, while correspondingly to the setting of the contact pyramid II, it is either the selector EW2 (coupling arm 1 ew2 ) or the EW3 selector (lew3 coupling arm) which regulates * Even this arrangement involves a significant economy of relays compared to a single pyramid controlled by the
 EMI54.1
 relay Wl -V10, being at.onn4 only under the effect of 1, ':

  îj.visiori in two five-stage contact pyramids, in each case, at the fifth stage of the contact pyramid, a single additional auxiliary relay is sufficient to activate part of the relay contacts at this stage, while, in a pyramid of contacts of 10 stages, auxiliary relays are essential from the 5th to the 10th stage.

   The costs are therefore practically the same both for the adjustment in several times of the pyramid of contacts and for
 EMI54.2
 the case of setting pyramids of co :: t :. ':: ts oifferentcs, titis they hundred, bout at least, appreciably mi @ imes compared to the expenses Required by a single pyramid of contacts comprising an adjustment in only one go.
 EMI54.3
 



  It is not 1Dt, -, real,; 1iJ.lt not necessary that: 1 take place, as in the example in 'execution, unj4 only soft adjustment times of the same pyramid of contacts or indeed a single adjustment of two pyramids of contacts. The division can be pushed even further so that even an adjustment
 EMI54.4
 repeat three times from the same pyramid of oo: ¯tcts or else the setting of three pyramids c. 8 contacts s;: B.l '; s can take place, in case of bowls r'; l, f.- ' ô become G. ''; sir2:,; les for reasons of convenience.



  V E D i A T 7 C, S.



  1.-Disposition of; coupling for 'li dt8ritioD of directions (J8 t'L "; - fic c1n.1G des l'! S ',. llc ^ t0: 1: t,;. l.êjOîOtllqJe9 via a communication channel passing between a Post providing criteria and a post using

  <Desc / Clms Page number 55>

 these criteria, by means of fone- ti @@ ement @ynchronous coupling devices provided at the two stations, some of which are provided at the station supplying the criteria, as a function of coupling members actuated in a corresponding manner.

   at a desired direction of traffic, an emission of characteristic pulses at certain times during the operation of the coupling devices, and the others, expected at the station using the criteria prepared by the coupling members serving for reception characteristic current pulses, characterized in that the coupling devices (DW and Hl / HHl -H5 / HH5) of the two stations are brought forward in a synchronous manner by ten current pulses, by a series of pulses of current (fundamental series of current pulses) emitted along the communication path (Ue-Wl, Uel) by one of the two stations and in conjunction with the coupling devices (Dw)

   of the substation supplying the criteria (Vstl) cause along the communication path, under the influence of the coupling devices (Tl, T4, T5, T6, T8;) actuated in a manner corresponding to the desired direction of traffic (VSt3) , an additional emission of current pulses, which determines the desired direction of traffic by the number of characteristic current pulses (5) and the moment (1st, 4th, 5th, 6th, 8th stations) of their emission and which occurs during the series' of current pulses, this additional emission of current pulses putting into action, by the coupling members (Wl- W10) which serve to receive the characteristic current pulses, the coupling device (W1, W4, W5, W6, W8) prepared by the station coupling devices using criteria (VSt2)

   at each moment when the emission of the characteristic current pulse occurs, after which, at the end of the additional emission of current pulses, the

  <Desc / Clms Page number 56>

 Coupling devices influenced at various times determine the desired direction of traffic (VSt3) according to their number.



   2.- Coupling arrangement according to claim 1, characterized in that the coupling members (T1-T10) of the station providing the criteriums (VStl) prepare, for a current pulse emitting device (Jg5 '), circuits which are closed, for the purpose of omitting a characteristic current pulse, at times corresponding to the determination of the desired direction of traffic, through contact devices (w1), then in each case, the coupling devices Dw of the station supplying the criteria (VSt1) are activated.



   3.- Coupling arrangement according to claim 2, characterized in that, by means of the contact devices (wl) actuated successively by current pulses, the station providing the eriterium (VSt1), the coupling members ( T1-T10) not being actuated, a circuit is formed in each case for a transmission device (Jg4 ') for the purpose of transmitting the current pulses (10) constituting the series of pulses of current.



   4. - Coupling arrangement according to claims 2 and 3, characterized in that, the coupling members (T1-T10) being put into action, the soft emission devices (Jg4 ', Jg5') are excited,
5. - Coupling arrangement according to claim 4, characterized in that the current pulses produced by the transmitting devices are transformed into alternating current pulses of variable frequency (600/750 Hz), which, after their transmission along the communication channel, are returned, at the station using the criteria (VSt2), to the state of variable intensity direct current pulses to actuate the corresponding current ion reception relays (JK1, JK2).

  <Desc / Clms Page number 57>

 



   6. - Coupling arrangement according to claim 5, characterized in that the contacts (356ikl) of the current pulse reception relays (JK1), which receive the pulses of the series of current pulses, cause the action , proceeding in synchronism by current pulses, on the coupling devices (H1 / HH1-H5-HH5) of the substation using the criteria (VSt2), while the contacts (496ik2) of the current pulse reception relays ( JK2), which receive the characteristic current pulses, activate the coupling devices (W1-W10) prepared, at the moment of the arrival of the current pulses, by the coupling devices (Hl ..... H5) gradually influenced.



   7. - Coupling arrangement according to claim I, characterized in that the series of current pulses coming into action at the two stations is transmitted by the station using the criteriums (VSt2) to the station providing the corresponding criteriums (VStl) and that the contact devices of the coupling devices, which are therefore gradually influenced therein, check whether a characterization is undertaken with a view to the emission of a characteristic current pulse at this moment of production of the series of current pulses, to cause in this case, under the effect of the corresponding device for emitting current pulses,

   the emission of a characteristic current pulse for the purpose of activating the coupling members prepared at the station using the criteria by the coupling devices gradually influenced at this station.



   8. - Coupling arrangement according to claim 7, characterized in that the series of current pulses emitted along the communication path in the form of alternating current pulses as a result of the transformation carried out at the station using or at the station supplying the criteria, and the characteristic current pulses

  <Desc / Clms Page number 58>

 are alternating current pulses of the same frequency.



   9.- Coupling arrangement, according to claims 1 and 8, characterized in that the coupling members (W1-W10) initiate, at the end of the series of current pulses, coupling processes which cause a setting of communication selectors (telephone selectors GW1-GW3) in the direction which is determined by the characteristic current pulses emitted at the different times.



   IC.- Coupling arrangement according to claims 1 and 7, characterized in that the number of pulses constituting the series of current pulses ô¯ depends. the number of traffic directions.



   II.- Coupling arrangement according to claim 10, characterized in that the number of traffic directions increases for the same number of pulses constituting the series of current pulses by the use of different frequencies for the characteristic pulses or under l The effect of the composition of the characteristic current pulses from alternating current pulses of different frequencies.