DE479505C - Circuit arrangement for telephone systems - Google Patents

Description

Circuit arrangement for telephone systems The invention relates on telephone systems in which a connection is established through automatic dialers and a call count by a counter associated with the calling line he follows.

This is a matter of course for all such call counter arrangements The condition to be met is that the counting of the complete trip (feedback the voters, registers, relays, etc. in the rest position) must go ahead. On the other hand, distinguish the individual circuit arrangements are basically depending on the choice of time, in which the counting process is initiated or closed compared to the triggering process End is performed.

While in older systems (e.g. according to patent i 9 i 881) already with the Switching the line selector through to the called line closes the Counting circuit took place, a number of newer systems solve the problem such that the count from the 'time of answering or hanging up the called Participant is brought into dependency. This can be done in two ways. The counting process is either carried out at this point in time or it is on the I. shock receiver initially set only one circuit, which in the further of the actions of the called subscriber or of the state of the The first voter subordinate to the first voter remains independent, but only finally at the point in time the end of the call, the hanging up on the part of the calling subscriber, closed and the count is effected; here, too, the condition must apply that the count must precede the final trip.

In further circuit arrangements with and without a transformer, the occurrence of the point in time for the counting is made dependent on the so-called reverse triggering, ie on the hanging up of the called subscriber. For this purpose, circuits are known in which both the test line and the voice line are triggered by a relay located on the called subscriber's side (behind the transmitter) being activated when the receiver is attached to the called location and on the Acts circuits for counting and separation. Finally, especially with regard to the remote office operation, in which counts are to be made ineffective in certain cases, the time for starting the counting is made dependent on the hooking up of the calling subscriber, but the circuit is kept prepared for the entire set of voters up to the LW to prevent counting from both ends.

In all of these mentioned cases where the triggering and counting operations partially coincide in time, there is a risk that the count opposite of tripping lags behind, resulting in an absenteeism or mutilation the meter indication can arise. Special facilities are required to avoid this risk be taken to secure the course of both processes against each other. These Security requires either the arrangement of inevitably controlled one after the other Control switch positions or special relay chain circuits that are used in certain Positions of the connection process, time differences between the contact closures cause.

A saving on individual relays compared to the known arrangements is achieved by the circuit according to patent 26o 838, class 2 ia, but special delay means are required after this circuit, by two to delay electricity closings initiated at the same time against each other.

According to the present invention, a compulsory assurance that the count before the final trip takes place, caused by the fact that as a voter, in particular as I. group voter, a such is used, which turns automatically and in one direction into the rest position and before the end of the rotary path a contact position, e.g. B. has an empty contact, when the counting process is passed, the counting process is initiated has ended, the final release at the end of the path (e.g. when falling back of the voter in the rest position) occurs.

An embodiment of the invention is described below and shown on the drawing.

Fig. I shows the front upper part of such a lever-operated rotary selector together with Contact track and release device for the counting circuit in perspective view, and Fig. 2 shows a circuit diagram omitting all for an understanding of the Invention of insignificant details.

The setting of the selector shown in Fig. I in the rest position, z. B. the first group voter I. GW, takes place in a known manner by by the first sent by the calling party. Series of impulses initially the lifting of the Switch arms to the desired decade Lund on it the automatic turning of the same (the free election) is going on.

The voter on which the invention is based makes the rotary movement at the beginning a step that brings the arms to the first contact position L1, in the means Release of the shaft contacts w1 and w2 now: a self-interrupting circuit the further switching of the voter arms takes over automatically. Even any existing subordinate group voters work in the same way. As Line selector, a similar selector can be used, only with the difference that that after his lifting he is not free to choose, but by that of the participant (. or civil servants) dispatched a series of current impulses is turned in.

The processes of dialing, checking, calling and answering on the part of the called subscriber are assumed to be known and not further affected.

If the caller hangs up the receiver after the call has ended, so the voter automatically turns on the contact path and arrives at the in their end provided empty contact bark L11, of which the subject of the Invention forming compulsory control of the further processes takes its starting. When this empty contact Lia is reached, a wave contact is used w2 by a contact z '(Dept. 2) according to the operating conditions for the circuit prepared for the count is closed and the count is effected. Since the The self-interrupting circuit still exists, the meter takes one more step, which brings it from the idle contact position L11 into the release position, in which z @ B. the raised tooth rake Y falls through at the end of the path or in the starting position swings back. Now a pin comes back into engagement with the stop of the Shaft contact w1, which causes the inevitable triggering of the rotary magnet D1 and the shutdown of the. Counting circuit prepared or completed.

The constructive implementation of the inventive idea on the voter can in different ways.

In the case of the voter shown in the drawing (Section i), who in his Individual construction is described in detail elsewhere, are the 'the Actuation of the shaft contacts wi and w2, designed as pins or the like Approaches d1 and d2 z. B. on each of the (three) sectors of the drive plate a or at another suitable point of the parts of the voter that participate in the rotary movement intended.

The drive plate a has for guiding the toothed rake Y together with its selector arms f projections with recesses c, which are only at the beginning and end of a rotary movement with corresponding recesses c 'of a fixed slide. correspond so that the tooth rake Y can be lifted or fall back. As a result of a further recess in the toothed rake Y itself, the selector that has fallen back can snap back along the drive plate into the starting position. When the selector is turned into contact position L1, stop e1 is released by pin d1 and only closed again in the drop position, while stop e2 is touched by pin d2 in idle contact position L11.

The required, secured time difference between the two processes The counting and triggering is thus done without any special delay devices causes that already when running up the selector arms on the z. B. at the end of the decade following empty contact L1, the contact initiated by w2 for the count and has time in its course until the voter gets into the fall-through position and the shaft contact w1 comes into contact with the stop e1 again. The one mentioned Time span for counting can be extended in a known manner if one still the complete release of a so-called head contact, d. H. such a which is operated by the not yet raised voter, makes dependent.

The mode of operation of the device can be adapted to any circuit arrangements and will depend on the conditions which are set for a count to take place. If the occurrence of this condition is identified by closing a contact z without further consideration of the individual parts, then the processes can be illustrated in an example according to the circuit in Fig.? explain as follows: If the subscriber (e.g. Tit1) hangs up his receiver after the conversation, this will de-energize relay A on the first group selector. The contact al in the rest position brings the relay B and its contact bl in the rest position, the relay P1 to drop.

Since the pin screwed out of the rest position, the closure of the Wave contact w1 has caused a circuit via the falling contact pl to the rotary magnet Dl of the I. group selector closed, so that he is about his Contact track switched through by means of the interrupter contact dl.

If the selector I. GW (Fig. I) reaches the empty contact L11 with his arms f, the pin d2 on the drive plate a pushes against the stop .22, whereby the contact w "is actuated and the counting circuit is closed the way: resistance wh, w "z, head contact k. in working position, arm c from VW, prv working position, teeth, positive pole.

D a is the pin d behind pin d2 in the direction of rotation, has not yet reached its stop e1, the self-interrupting current lasts for the rotary solenoid D1 continues, so that the 1st group selector is in the drop position of the tooth rake r is brought. Then the pin dl comes with the stop e1 engages and opens the contact tvl, whereby the rotary magnet Dl is de-energized.

The voter's tooth rake r falls through the now superimposed Recesses cl or c2 or c3 through into its subscript, in which it is through Spring force swings back into the starting position.

In this position, the stop 1 (.o the Head contacts k1 and k2 returned to the rest position. About the contact k. in the rest position, the counting circuit is finally interrupted while contact k1 disconnects the circuit to relay R in the rest position. About the falling back Contact t ^ 2 in the rest position, the relay P is brought to drop, its contact pl in the rest position the circuit to the rotary magnet D1 of the preselector VW again closes so that it is in a known manner via the interrupter U in the zero position advances.

Claims (1)

PATENT CLAIMS: i. Circuit arrangement for telephone systems, at which a connection is established via automatic dialers and a call count is carried out by a counter assigned to the calling line, characterized in that that as a voter, especially as I. group voter, one is used who turns automatically and in one direction into the rest position and before the end of the Rotational path has an additional contact position, when passing the counting device responds, while, as soon as the counting process is finished, the final trip occurs at the end of the track (e.g. when the voter falls back into the rest position). a. Circuit arrangement according to Claimi, characterized in that the control of the shaft contacts (w1 and tv2), designed as pins (d1 and d2) on each of the (three) sectors of the drive plate (a) of the rotational movement Participating parts of the voter are arranged. 3.Circuit arrangement according to claims; and z, characterized in that the two pins (d1 and d2) are in the direction of rotation are offset from one another in such a way that one approach (d1) corresponds to the other approach (d2) lags. q .. circuit arrangement according to claim i, characterized, that achieved by lagging one pin (di) to the second pin (d2) The time span for the counting to take place is increased by the fact that the time until the actuation _ of the selector falling back into the rest position dependent contact (head contact) can be partially or fully used for the counting process is made.