AT126810B

AT126810B - Circuit arrangement for central offices for connecting telegraph sets.

Info

Publication number: AT126810B
Authority: AT
Original assignee: Ver Telephon Czeija Nissl & Co
Priority date: 1930-02-22
Filing date: 1930-02-22
Publication date: 1932-02-10

Description

  

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 über die normalerweise geschlossenen Kontakte des Drucktelegraphenapparates TM zur Batterie geschlossen, vorausgesetzt, dass der Apparat   Tau nichet   in   Gebrauch   steht. Wenn angenommen wird. dass der Drucktelegraphenapparat frei ist. dann wird Relais 2L1 erregt und schliesst einen Stromkreis für das Relais 2   zur Erde an   den mittleren oberen Kontakten des Relais   A 1.   



  Das Relais 2 L 1 hält über seine inneren oberen Kontakte, Wicklung des Relais 2 P zum linken Kontakt des   Relais 2 X   und Erde fest. Relais 2P erhält nicht genügend starken Strom und wird daher in diesem Stromkreis nicht betätigt. 



   Es wird bemerkt, dass normalerweise der Strom über die Maschine M1 von batterie, obere Kontakte des Relais   B 1,   obere Kontakte des   Relais A 1. Senderkontakte   und Empfangsrelais zur Maschine   =fol,   innere obere Kontakte des Relais   A 1,   innere obere Kontakte des Relais B 1 zur Erde   fliesst.   Dieser Stromkreis wurde bei der Erregung des Relais Al unterbrochen. und das Empfangsrelais bewegt sich daher zu seinem   abstandhaltenden   Kontakt, was als Anlaufsignal dient und die Betätigung des Empfangsmechanismus bewirkt. Da der Anker des Empfangsrelais weiter auf seinem abstandhaltenden Kontakt verbleibt, wird kein Buchstabe 
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   betätigt   wird. wird der Stromkreis über das Empfangsrelais nochmals von Batterie.

   Wicklung von TM, mittleren oberen Kontakten des Relais B1. Kontakte von 2L1, obersten Kontakten von   2 L 1, Maschine if7.   inneren oberen Kontakt des   Relais A 1 zur   Erde geschlossen. Die Maschine hört mit dem Verschieben des Streifens auf. und dies dient dem Teilnehmer als Signal. dass eine freie Verbindungsleitung gefunden wurde. und er kann jetzt die erforderlichen Wahlstromstösse einsenden. 



   Der Teilnehmer bewerkstelligt dies dadurch, dass er die Bezeichnung des gewünschten Teilnehmers auf seinem Apparat tippt, und, da jetzt die Maschine   y. V in Reihe mit seinen   Sendekontakten verbunden   ist,   wird diese Bezeichnung auf der Maschien TM empfaugen, welche das dem   gewünschten   Teilnehmer entsprechende Relais, wie bereits   erklärt,   erregt.   Wenn   angenommen ist, dass der Teilnehmer M2 verlangt wird. dann werden die   Kontakte T, 112   geschlossen.

   Da angenommen ist. dass die Maschine JI2 2 frei ist. so werden die Relais A2 und B2 nicht betätigt, und es wird ein Stromkreis geschlossen von Batterie. rechte Kontakte des Relais   2 X, rechte Kontakte   des Relais 2 P, mittlere Wicklung des Relais 2L2. einer der Kontakte TM 2. untere Kontakte des Relais 12, untere Kontakte des Relais B2 und Erde. 



  Es wird das Relais   2 L 2 gewählt.   da es das dem gewünschten Teilnehmer entsprechende Relais in der zweiten Verbindungsleitung ist, und diese Verbindungsleitung die einzige ist, in welcher das Relais X betätigt ist und das Relais B nicht betätigt ist. Das Relais 2 L 2 schliesst über das Relais 2 P, Kontakte von 2X zur Erde einen Festhaltestromkreis für sich selbst.

   Das 
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 Kontakte von 2M2 einen Stromkreis für Relais B2 und über gleiche Kontakte von   2 L 1   einen andern Stromkreis   für B 1.   Die Relais B und B2 werden betätigt, und die zwei Maschinen werden jetzt im folgenden Stromkreis angeschlossen : Batterie, innere obere Kontakte des Relais B2, innere obere Kontakte des Relais   A 2, Maschine M2,   oberste Kontakte des Relais 2 L 2, oberste Kontakte des Relais 2L1, Maschien M1, innere obere Kontakte des Relais A 1 zur Erde. Die Maschine TM wird jetzt von beiden Maschinen abgeschaltet, während das Relais B 1 an die Batterie eine niederohmige untere Wicklung des Relais A1 in Reihe mit dem Anzeiger B 1 anschaltet, welcher betätigt wird und dem Teilnehmer anzeigt. dass die Verbindung hergestellt wurde.



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 Closed via the normally closed contacts of the pressure telegraph apparatus TM to the battery, provided that the apparatus Tau is not in use. If accepted. that the printing telegraph apparatus is free. then relay 2L1 is energized and closes a circuit for relay 2 to earth at the middle upper contacts of relay A 1.



  The relay 2 L 1 holds on its inner upper contacts, winding of the relay 2 P to the left contact of the relay 2 X and earth. Relay 2P does not receive sufficient current and is therefore not actuated in this circuit.



   It is noted that normally the current through the machine M1 from battery, upper contacts of relay B 1, upper contacts of relay A 1. Transmitter contacts and receiving relay to the machine = fol, inner upper contacts of relay A 1, inner upper contacts of the relay B 1 flows to earth. This circuit was interrupted when the relay Al was energized. and the receiving relay therefore moves to its spacing contact, which serves as a start-up signal and causes the receiving mechanism to be actuated. Since the armature of the receiving relay remains on its spacing contact, there is no letter
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   is operated. the circuit is again from battery via the receiving relay.

   Winding of TM, middle upper contacts of relay B1. Contacts from 2L1, top contacts from 2L 1, machine if7. inner upper contact of relay A 1 to earth closed. The machine stops moving the strip. and this serves as a signal to the participant. that a free connection line was found. and he can now send in the necessary elections.



   The subscriber accomplishes this by typing the name of the desired subscriber on his device and, since machine y is now. V is connected in series with its transmitting contacts, this designation will be received on the Maschien TM, which, as already explained, energizes the relay corresponding to the desired subscriber. If it is assumed that the subscriber M2 is requested. then the contacts T, 112 are closed.

   Since is assumed. that the machine JI2 2 is free. so the relays A2 and B2 are not actuated, and a circuit is closed by the battery. right contacts of relay 2 X, right contacts of relay 2 P, middle winding of relay 2L2. one of the contacts TM 2. lower contacts of relay 12, lower contacts of relay B2 and earth.



  Relay 2 L 2 is selected. since it is the relay corresponding to the desired subscriber in the second connection line, and this connection line is the only one in which the relay X is actuated and the relay B is not actuated. Relay 2 L 2 closes a holding circuit for itself via relay 2 P, contacts from 2X to earth.

   The
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 Contacts of 2M2 a circuit for relay B2 and via the same contacts of 2 L 1 another circuit for B 1. The relays B and B2 are activated, and the two machines are now connected in the following circuit: Battery, inner upper contacts of relay B2 , inner top contacts of relay A 2, machine M2, top contacts of relay 2 L 2, top contacts of relay 2L1, machine M1, inner top contacts of relay A 1 to earth. The machine TM is now switched off by both machines, while the relay B 1 connects to the battery a low-resistance lower winding of the relay A1 in series with the indicator B 1, which is actuated and shows the participant. that the connection has been established.

Claims

If at the time the subscriber pressed the key K1 there was no free connection line available or the machine YT was busy establishing a different connection, then the machine-311 would advance the strip further and the subscriber would thereby Sign received not to progress with the connection.

If the machine of the requested subscriber was already connected to EMI2.4 no circuit existed. The indicator D 1 would therefore not be actuated.

At the end of the connection, the key Kl is switched off, whereby the circuit for the relay A 1 is interrupted. When it is switched off, relay A 1 interrupts the circuit for relay 2 X, which fills and interrupts the circuit for relay 2 P, 2 L 1 and 2 L 2. The relays B 1 and B 2 therefore drop all. And the connection circuit and the subscriber line can be used for another connection.

PATENT CLAIMS: 1. Automatic switching offices with several subscribers, each of which is equipped with a type printing telegraph apparatus, characterized in that the type printing <Desc / Clms Page number 3> EMI3.1 is effected.

2. Automatic switching offices according to claim 1, in which the type printing telegraph EMI3.2 circuits contain facilities for establishing an effective connection with any of the other subscribers through the transmission of said dialing surges.

3. Automatic switching offices according to claims 1 and 2, characterized. that the connection established between the subscribers only comprises a double-line path in the central office.

4. Automatic switching exchanges according to claims 1 and 2, characterized in that a dialing mechanism (relay A, L, etc.), the type used in automatic telephone exchanges is set up so that it connects a calling party with a free connection circuit and the selected Connection circuit with a type printing telegraph apparatus (T1W) in the central office as well as equipment connected to the latter apparatus (Tftf, which is used to optionally close a circuit when responding to the sending of the name of the desired subscriber, which is effected by types of this name on the transmitting apparatus of the calling subscriber .

5. Automatic switching offices according to claim 4, characterized in that devices (relay B1) are provided, whereby the type printing telegraph apparatus in the switching office is switched off when establishing a connection between two subscribers.

6. Automatic switching exchanges according to claim 5, characterized in that said devices consist of a relay (B) which is individually assigned to each subscriber and which is excited when the connection is established between two subscribers EMI3.3 can prevent.

7. Automatic switching exchanges according to claim 5, characterized in that the type printing telegraph apparatus (TM) in the exchange is jointly assigned to several connection circuits, devices (relay 1 L 1) being provided by which said apparatus can be interconnected with any of the circuits. when the latter is put into use.

8. Automatic Vermitllungsämter according to claim 7, characterized in that the devices (relay L L I) are individually assigned to a subscriber and are interconnected with the particular connection circuit being used.

9. Automatic switching offices according to claim 1, characterized in that automatic devices (relay, H, 1X and 1P) for connecting a subscriber to a circuit that can respond to the Wahlstromstösso, are provided and that the type printing telegraph of the subscriber with this current in such a way is connected so that the said apparatus itself indicates that the connection to this circuit has been completed.

10. Automatic switching offices according to claim 9, characterized in that the automatic display to the calling subscriber that the circuit has been connected, EMI3.4 the said devices consist in the operation of the type printing telegraph apparatus when the strip is advanced.