DE377603C - Impulse transmitter for setting dialers in semi-automatic telephone systems - Google Patents

Description

The invention relates to a setting for dialers in semi-automatic telephone systems Serving rush current sending device which after one of the desired subscriber number corresponding setting of a key set comes into effect. the known facilities of this type have the shortcoming that they are in their structure and in their Circuit are relatively intricate. ίο It is known, for example, the rear derailleur a rush current sending device with the aid of a clutch magnet from one constantly to drive rotating shaft from. With this facility, one is proportionate large number of revolving control disks required. Besides, the substitution is the moving parts of such a device are associated with difficulties.

To one both in structural terms and in terms of circuitry the known. Facilities much simplified current impulse transmission device to

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create, this device is provided according to the invention with a single electromagnetically driven stepping mechanism, which has several contact arms moved synchronously over different rows of contacts. This device offers' the advantage that relatively few rotating parts are required and easy replacement of the rotating parts is made possible. According to the invention furthermore, in order to reduce the number of devices connected to the keys lines like-numbered buttons appropriateness of the corresponding groups of digits number of subscriber numbers in ^group-1 S divided key set to the respective contacts of a fixed set of contacts of the stepping mechanism are connected in parallel.

An exemplary embodiment of the invention is shown in the drawing.

It is assumed that the telephone system comprises 100,000 subscriber lines. Each participant therefore has a four-digit call number, e.g. B. 2467. Corresponding to the four-digit. Call number, the key set is divided into four groups, namely the group of thousands T, the group of hundreds H _1, the group of tens Z and the group of units E. There are ten keys ι to 10 in each group. In a known manner, when the participant 2467 is desired, the 2nd, 4th, 6th and 7th key of each related group is pressed.

According to the invention, a single stepping mechanism is assigned to said set of buttons, which has three rows of contacts or sets of contact segments with associated, synchronously moving contact arms. The contact row T ₁ , H ₁ , Z ₁ , E ₁ and the contact segment set T ₂ , H ₂ , Z ₂ , E., with their contact arms A and B form the scanning device AT ₁ , AT _n , while the contact segment set S ₁ to S ₄ forms with the associated contact C the impulse transmitter SR. the like-numbered keys of each group of the keyset, z. B. J ₁ / I _1, S _1, e _v are multiple switched and the corresponding contacts of four groups of the contact row T ₁ to E _1. The contacts of each of these four groups are arranged in reverse order, ie from 10 to I. The individual contact groups T ₁ , JZ ₁ etc. and also the segments T ₂ , H ₂ etc. are separated from one another by gaps which can be formed, for example, by empty intermediate contacts r . The contacts t _lf t ₂ etc. to be closed by the keys are connected in groups to the corresponding contact _{segments T 2} , H ₂ , Z ₂ , E ₂ connected, the so arranged t are that in each case in the positions 10 to 1 of the individual groups via the associated contact arm B earth is placed on the connection line. With the movable contact arm A of the contact set T ₁ to Ii ₁ , the switching means serving to switch on the impulse transmitter SR are connected, which in the illustrated. Embodiment consisting of the scanner relay P provided with three windings I, II and III.

The impulse transmitter SR has a contact segment set S ₁ , S ₂ , Sa, Si with an associated grounded contact arm C. The contact segments S ₁ to Si are grouped in the same way as the contact segments T ₂ to E ₂ and are connected to the impulse relay / and the third winding III of the sampling relay P in connection. Between the Kontaktsegmen.ten S ₁ , S ₂ , S ₃ , Si three contacts It ₁ , kJ, Ze _{3 are} provided. Between the segments S ₁ and S ₂ , S ₂ and S ₈ as well as S _s and S _t , the first two contacts Ii ₁ , Ic _{2 are} connected to a delay relay V ₁ , while the third contact k _{s is} connected to a switch relay which is also designed as a delay relay U communicates. The arms A, B, C , which are attached to a common shaft, are rotated clockwise by the movement electromagnet D of the stepping mechanism. The connecting lines a and b are routed, for example, to a group selector, not shown. The setting current surges for the voters can be delivered in a known manner via the line α, while the changeover takes place via the & -wires. The function of the device described above is as follows: According to the desired subscriber number 2467, the officer presses the 2nd, 4th, 6th and 7th key of the various key groups, as already mentioned. When the last one, the one-key, is pressed, a starting contact I, coupled in a known manner, is temporarily closed and the motion electromagnet D is excited in the following circuit: From earth via the L ^T interrupter device K and the winding I of the changeover relay U _1, contact I ₁ Break contact P ₁ of the Abtasterelais P ₁ "rotary electromagnet D ₁ battery and earth. the delay relay U responds and includes, among its contact so that the energizing circuit for the rotary solenoid D is maintained regardless of the cause contact I ₁ Contact V. the contact arms A ₁ B ₁ C of the stepping switching mechanism will now be incrementally rotated in a known manner. Does the arm a to contact to the group T ₁ to which the second key of thousands group is connected, a circuit is completed from the battery via connect the windings

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gen I and II äes scanner relay P ₁ through 'the switching arm A ₁ the contact 2 of the group T ₁ , via the connection line and the button t " to the thousand segment T _{2 of} the contact segment set, via the associated arm B ₁ earth and earth back to the battery . In this circuit, the relay P responds and switches the movement electromagnet Z at the normally open _{contact p 2?} around. At the contact ^> _{3 it} switches the impulse relay / to the impulse transmitter SR of the stepping mechanism. The winding I of the relay P is short-circuited via contact p _i , as a result of which attenuation is generated in this relay, which results in a delayed drop in its armature. This will be. Fault current surges avoided. The winding III of the relay P serves as a holding winding during the impulse generation. When this relay J ₁ responds, which by means of its contact I ₁ sends the current impulses via the ff line to the selector to be set, a circuit for the rotary electromagnet D via the contacts V ₁ ″, p ₂ , i is established by closing its contact i _{2 2} closed

«5 Rotary solenoid D closes its self- breaker contact d, whereby the relay / is short-circuited, ie de-excited. This in turn causes the de-excitation of the rotary electromagnet D so that its contact d is opened and therefore the relay / can come into effect again. On the one hand, this relay causes a current surge via the α line by closing I ₁ and, on the other hand, energizes the rotary electromagnet D again via 4. Each intermittent excitation of the relay / therefore corresponds to a current impulse: to set the selector via the α-line ·, and with each intermittent excitation of the rotary electromagnet D , the stepping mechanism is switched one step further. If the selector arms A ₁ B and C meet the intermediate contacts following the group of thousands, the excitation of the relay J ₁ , i.e. the impulse current, stops. Since the relay P drops out, this relay is switched off by the surge transmitter SR of the switching mechanism. The stepping mechanism can be switched ¹ in the following way:

When the arms A ₁ B strike the intermediate contacts r lying between the contact groups T ₁ , H ₁ etc. or the segments T ₂ , H ₂ etc., no particular effect is produced. In contrast, in the impulse transmitter SR, when the arm C is moved via the intermediate contacts U ₁ to k _s, an intermittent excitation and de-excitation of the rotary electromagnet D is brought about. When the first intermediate contact k _x hits, the delay relay V is switched on via the arm C , which opens its contact z // and closes its contact V _1. A second delay relay V "is made to respond via contact V ₁ , so that the normally closed contact V ₁ " is opened and the normally open contact V ₂ "is closed. As a result, the rotary electromagnet D is brought into function of the delay device V, V" . The relay V "also closes its contact V ₃ ". As a result, the relay V is short-circuited, so that it drops out with a delay and its contact V ₂ closes. By: Close! This contact the rotary electromagnet D is made to respond. By de-energizing relay V , its contact V ₁ is also opened and thus the excitation circuit for the second relay V "is interrupted, so that this relay drops out with a delay. As a result, its contacts v ₂ " and V ₃ "are opened. By ¹ opening of the contact v _s " the short circuit for the relay V is canceled, while the excitation circuit for dta rotary electromagnet D is interrupted by opening the contact v _z " . The electromagnet D drops out, and the stepping mechanism moves one step further to the intermediate contact k ₂ . in this contact, the just described, particularly slow exciting and deenergizing ₁ repeats the rotary solenoid D whereby the seeking out is obtained for an available line in the group selector time necessary for the safe switching from lifting to rotate andl. on the third intermediate contact k _3, the winding II of relay U is switched on. This closes contact u and therefore switches on the rotary electromagnet D causes in its original excitation circuit.

The same switching process now takes place in the group of hundreds as in the group of thousands. Upon impact of the arm A to the determined by the pressed key on the Hundreds Group Contact Group H _1, the relay P is energized, whereby in the above manner outlined again the electricity ^and surge relay / switched on and the rotary solenoid D in response d from the self-breaking contact and the contact i ₂ of relay J is brought. """

When the arm C strikes the intermediate contacts k _t , k ₂ , k ₃ following the group of hundreds, the switching operations are repeated to achieve a slowed operation of the rotary electromagnet.

The impulses of electricity in the group of ten and on it are then in the same way generated in the unit group.

After the last ^: ones current surge, the three contact arms A ₁ B ₁ C meet the first intermediate contact between groups of ones and thousands. The intermediate contacts between

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see these groups are open, so that no new excitation circuit for the rotary electromagnet D comes about. The stepping mechanism therefore remains at rest and the relay P drops out. The facility is now available again to establish a new connection.

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ίο a plurality of contacts can be provided. In this case, the arrangement of the special delay device V, V ″ could be dispensed with. By using this device, however, a considerable saving in contacts is achieved or better utilization of the contact field of the stepping mechanism is made possible.

Claims (8)

Patent claims i. Impulse transmitter for setting selectors in semi-automatic Telephone systems, soft according to the number corresponding to the desired subscriber number Setting a set of buttons comes into effect, characterized in that the current impulse transmission device is provided with a single, electromagnetically driven stepping mechanism, which over several sj-nchron has different rows of contacts moving contact arms. 2. Impulse transmission device for setting voters in semi-automatic telephone systems, which comes into effect after setting a button set corresponding to the desired subscriber number, thereby marked ^! indicates that the keys with the same number (e.g. If ₁ , Zt ₁ , S ₁ , C ₁ ) of the key set divided into groups according to the number of digits of the subscriber numbers to the. corresponding contacts of a permanent set of contacts (T ₁ 10 bis'i, H ₁ 10 to 1 etc.) of the stepping mechanism are connected in parallel. i 3. Impulse transmitting device according to An i Spruch ι or 2, characterized by. a movable contact arm (A) connected to switching means (P) for switching on the impulse transmitter (SR) ,! which scans the contacts of the fixed contact set (T ₁ 10 to i, H ₁ 10 to 1 etc.),! while on the other hand the keys j to be closed contacts (I ₁ , t. / etc.) i are connected in groups to contact segments (7 ' _2. ι H ₂ etc.) of the stepping mechanism, with which a movable. ' grounded contact arm (B) interacts. 4. surge transmitter according to claim 3, characterized in that the with. the scanning device (ATi, AT _Jt ) connected to the switching on of the current impulse transmitter (SR) serving notch means consist of a relay (P), which works to avoid fault current surges with delayed armature drop caused by a short circuit of part of its winding. 5. Stromschlagsendervorricbtung according to claim 3, characterized in that the current impulses for setting the selector are generated by a special contact segment set (S ₁ to Si) of the step-by-step switching mechanism associated current impulse relay (J) , which via the associated movable contact arm (C) during its movement is brought into effect via the individual contact segments (S ₁ to S ±). 6. rush current sending device according to claim 5, characterized in that the rotary electromagnet (D) of the stepping mechanism during the rush current of a self-interrupter contact (d) and a contact (L) of the rush relay (/) is controlled. 7. Impulse transmission device according to claim 5, characterized in that the intermediate contacts (Jt ₁ , k ₂ ) of the contact _{segments (^ 1} to J ₄ ) for delaying the start of the impulse series switching means (V ^ are connected, which the rotary electromagnet (D) such influence that he moves the contact arms more slowly during the time of the brushing of the intermediate contacts than during the time of the current impulse for the voters. 8. Impulse transmission device according to claim 6, characterized by switching means (u, Z), which maintain the switching on of the rotary electromagnet (D) when the last button is pressed or in the last intermediate position of the impulse transmitter between the individual series of impulses, until when the scanning device (ATj, ATn) is moved into the position corresponding to the pressed key of the respective group, the dependency of the rotary electromagnet (D) on its self- breaker contact (d) and the impulse relay contact (Z ₂ ) for the impulse supply for setting the selector is established . For this 1 watt drawings.