DE576988C - Circuit arrangement for telephone systems with connection devices consisting of setting and voice dialers - Google Patents

Description

GERMAN EMPIRE

ISSUED AIB
May 20, 1933

REICH PATENT OFFICE

PATENT LETTERING

M 576988 CLASS 21a ³ GROUP

Siemens & Halske Akt.-Ges. in Berlin-Siemensstadt *)

Patented in the German Empire on August 14, 1930

The invention relates to telephone systems with off setting and voice dialers existing connection devices and aims to be broadcast in the simplest possible way a first call required to immediately call a desired connection point using the already to achieve switching devices provided for other switching purposes.

According to the invention this is achieved in that the setting of the speech selector Serving setting dials a periodic call to a desired connection point effecting call facility for the purpose of sending a first call immediately controls after the connection is established.

The inventive arrangement has the advantage that for the first Call the desired connection point no special switching device is provided needs to be.

In the figure, an embodiment of the invention is shown.
We see a participant Tn _1,. which can reach a subscriber Tn ₂ via a preselector VW, group selector GJV ₁ and a line selector LW. The preselector VW and group selector GW is only shown schematically, while the line selector LW is also shown in the special circuit arrangements. For the present invention, only the circuit design of the line selector is of interest. This line selector consists of a so-called speech selector with the switching arms a, b, c and d and a setting selector with the switching arm \ y _J which controls the setting of the speech selector according to the series of current impulses sent.

It should also be mentioned that different contacts controlled by the switching magnet S of the setting selector or by the switching shaft thereof are used to control the circuits, namely the contacts shown with an open circuit (e.g. 32J _O _ ₁ ) from the switching shaft and those shown with a full circle (e.g. i6j). Contacts actuated by the solenoid. The index indicates the position of the selector switch in which the contact position shown is assumed.

If the subscriber ^{Tn 1} picks up his receiver, a preselector VW is started in a known manner, which has a downstream group selector, e.g. B. GW, as the first free group voter may reach. At this moment the VW selection is shut down, in some known way. The relay C ₀ im is excited

*) The patent seeker stated as the inventor:

Serious. 'Horn in Berlin,

Group selector GW established via the preselector test; Furthermore, the relay A is excited via the windings I and II in a circuit running through the subscriber loop. The group selector GW can now be set in any way by number current surges to a certain contact row, in which he freely selects a downstream line selector, z. B. LW ₁ reached.

After reaching the line selector LW , the group selector GW is shut down; this creates the following circuit: earth, resistor J ^ i ₂ , switching arm of group selector GW, contacts ^ 2s _Q - _v shaft ^{contact 33 1} Ze; of the speech selector, winding I of the relay V ₁ battery, earth. In this circuit, the relay V responds and, by closing contact 8 z / ao, causes the selector to advance by one step by energizing its switching magnet £ via: earth, contacts 8z /, 14%, 12 c, winding I of the switching magnet S ₃ battery, earth. The switching arm ^ is advanced by one step and reaches the contact i. This creates the following circuit: earth, battery, winding I of the relay T ₃ switch arm d of the voice selector, contact ο in its contact bank, contact l in the contact bank of the selector, switch arm .s of the same, contact 30 c, earth. The relay T responds in this circuit.

If the calling subscriber Tn _{1 is} now sent out current impulses, i.e. if contact 2 a is closed intermittently due to the intermittent interruption of the excitation circuit of relay A via the subscriber circuit, then relay A ₁ in the line selector LW is accordingly excited via: earth, contacts 3 c ₀ , 20, resistance Wi _it relay A ₁ , battery, earth. Corresponding to the current impulse number, each time the relay A _{x is} de-energized in the circuit just described, the switching magnet 6 "is excited via its winding I in the circuit already described, so that the holding arm · 5" is advanced according to the current; impulse number. If, for example, four current impulses are sent out, the switching arm s will reach the contact 5. In the meantime, after the holding arm has left the position / and so that relay T has become de-energized, a switching circuit for the rotary magnet D of the speech selector has been established via: earth, battery, rotary magnet D ₃ contacts 2Op ₃ 25 i, 23rd C ₁ 245 ₀ _j, AC power source W ₂ , earth. In this circuit, the rotary magnet is advanced until its switching arm d has reached the contact marked by the switching arm s , that is to say contact 30. In this case, an excitation circuit for the relay T is again established (earth, battery, winding I of the relay T ₁ switch arm d of the voice selector, contact 30 in the contact bank of the same, contact 5 in the contact bank of the selector, switch arm j of the same, contact 30 c , Earth). By opening contact 25 1 , the rotary magnet D of the speech selector is de-energized and the speech selector is shut down.

Since the contact 32s _o _j is open after leaving the first contact position of the selector switch, the relay V ₃ , which was kept energized during the series of impulses via the intermittently actuated contact 15%, drops out after the end of the same, so that the switching magnet 5 remains energized via: Earth, resistance Wi%, switching arm of the group selector GW ₃ contacts gs / 7 V ₃ 14%, 12C, winding I of the switching magnet S ₁ battery, earth.

When the next series of current impulses is emitted, relay A _{1 is} again energized and deenergized intermittently. The first time it is triggered, the switching magnet 5 "is de-energized, which means that relay C is excited via: earth, contacts 6 W ₁ , 5S ₀ , go ios ₃ relay C ₃ battery, earth. Relay C closes with its contact 4 c via the resistor Wi _a into a hold circuit and causes the relay V to be excited: earth, battery, winding I of relay V ₃ winding II of switching magnet S ₃ contacts 29 t, 31c, earth kept energized. solenoid S, so that the alternating current source _W1 on .the WicklungI via the contacts Hi ₀ and 13 c no switching operation to the rest position causes. in the now following deenergization of the relay ^ during Strarnstoßgabe is the rotary magnet D of the opening selector, and at the end of each current impulse, influenced by: earth, contacts 31 Cj 35Ρ » ² 7bit ² 6%, 38 ^ .20 ^ rotary magnet D ₃ battery, earth During the series of current impulses, relay T is kept energized by: earth, battery, winding I of relay T ₁ contact te 34 ^ 1501, Sv ₃ Earth, because it has a delaying effect due to a short circuit in its winding II.

After the series of impulses has elapsed, the relay T is de-energized and, before the relay V is de-energized, it checks the subscriber line that has been reached. When the subscriber line is free, the relay P is energized in the following circuit: earth, contacts ₃ ic, 28 t 3 37 v, windings II and I of relay P ₁ switching arm c of the voice dialer, resistor Wi ₆ , battery, earth. The relay P closes

the contact 36p and thereby only the winding I in a holding circuit.

Since the winding II of the relay 5 ″ has become de-energized by opening the contact 29 1, the switching magnet S is pulsed through the winding I in the circuit: earth, alternating current source W ₁ , contact Hi ₀ , contact 13 c, winding I des Shift magnet \ S ", battery, earth. The setting selector is incremented in this circuit until it reaches its rest position, i.e. the contact Hi _{0 is} opened. During this progression, the contact is closed intermittently for 18 s , so that the winding II of the relay V is excited via: earth, battery, rotary magnet Ό of the speech selector, contacts 21 £, 19 O ₁ , winding II of relay V _1, contact 18 S. ₁ earth.

The relay V, which remains energized in this stepping circuit as a delay relay, causes via its contact 39 z; a connection of the call machine RM ₁ thus a transmission of the first call.

After reaching the rest position of the selector, the relay V drops off as a result of the continuous opening of the contact 18 j and now comes under the influence of a 5-second switch by closing the contact ijs , which now affects the relay V via the winding II every 5 seconds and this brings about a periodic call to the desired subscriber. ■ If the desired subscriber reports, be it during the transmission of the first call or during the periodic further call, the ReIaU ^ ₁ and B ₁ speak to the same via the subscriber loop and prevent further ringing by breaking the contact 19S _1.

The desired connection is thus established. Triggering the connection after The call is terminated in some way that is not of interest here.

Claims (4)

Patent claims: 1. Circuit arrangement for telephone systems with off setting and Voice dialers existing connection devices, characterized in that the setting selector used to set the speech selector is a periodic one Calling device effecting a call to a desired connection point for the purpose of sending out a first call controls immediately after the connection is established. 2. Circuit arrangement according to claim i, characterized in that the calling device is controlled by switching means (18s) which are actuated by a switching device (S) serving to advance the setting selector into the rest position. 3. Circuit arrangement according to claim 2, characterized in that the Calling device under the influence of a time switching device (5 ") controlling the periodic onward call comes as soon as the setting selector has reached the rest position. 4. Circuit arrangement according to claim 2, characterized in that an occupancy of the setting selector causing switching device (V) serves as a call device. 1 sheet of drawings