SU39842A1 - Selective communication device - Google Patents

Description

Existing selective communication schemes do not satisfy some of the technical requirements for them.

In those selective communication devices in which the high voltage ringing battery is permanently connected to the line, it is not possible to use the line for other purposes or for selector circuits due to the possible mixing of telegraph transmissions at the same time making calls.

The present invention aims to create a system that allows telegraph work to be superimposed on the line, as well as to take advantage of a common calling battery.

The telegraph operation overlay scheme remains normal, and the possibility of using a common battery is accomplished by applying ringing pulses through a transformer.

Since current pulses that drive the feed point relays must pass in a linear circuit, and the same circuit serves to send ringing pulses, they need to be differentiated, which in the present invention was made by separating them

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in time, i.e. ringing calls are sent to the line. when it is not occupied by pulses that activate the relay of the feed point. Thus, the work is done in the following order. During the operation of the call key, at the moment of closing it, current pulses are sent to the nutrient point, preparing the circuit for sending the ring pulse, and only after the key springs are opened, the nutrient point sends to the call station line. The next time after the ringing pulse is terminated, the keys are given again briefly closed, preparing the feeding point for sending the next pulse.

Between the end of the ring of the ringing pulse and the subsequent closure of the key springs, as well as between the closure of the key springs and the beginning of the next ringing pulse, some time passes between which the selectors, not receiving power, returns to its original position, i.e. after each ringing pulse, the selectors will return to the normal position, and the combination set will become impossible.

To obtain a set on the selector dials, there are pins through one hole; e, and the ringing pulses are sent in series of two pulses. The set of the combination is carried out by sending a certain pulse of one pulse through a certain number of two pulses of pulses 1, and two pins are placed in the code disk of the selector.

In FIG. 1 shows a device diagram; FIG. 2 - selector code disk made according to the invention; FIG. 3 is a diagram of the currents produced in different parts of the circuit during operation of the device.

The power supply unit (Fig. 1) has a polarized differential relay 1, a small deceleration relay 2, a large deceleration relay 3, a fast-acting relay 4, a power transformer 5. The system operates as follows: the current from a low-voltage linear battery 6 is constantly circulated ; The middle point of the winding of the differential relay 1, its left winding, contacts 7-8 (relay 3), line, choke 9 and back into the battery. Other circuit: middle point of relay 1, resistance 10 and back to battery. Since the resistance 10 is chosen equal to the line resistance, then in both | A single current is circulating in the winding halves, and the rootlet, adjusted for the contact, will remain unconnected. At the time of operation of the key 12, the spring 13 will ascend to the protrusion 14, close with the spring 15, and short-circuiting the linear wires, reduce the loop resistance, so that a stronger current passes through the left winding of the relay 1 and throws it to the contact It, resulting in Circuit: battery 18, pins 17-16, winding of the relay 2 at slow speed and back to the battery. Anchor 19 relay 2 pr nets. Graphically, this is shown in FIG. 3. As soon as the current in the linear relay rises to the magnitude attracting measles, the relay circuit 2 closes.

Anchor 19 will come into contact with pins 20 and 21, the first of which will connect the coil of a large deceleration relay 3 and minus battery 18,

the second is the winding of the high-speed relay 4, as well as the M: iiyc battery 18, but the current will not flow into the windings of these relays, because the battery 18 is disconnected by the relay 17 core 1. Therefore, the attraction of the core 17 of relay 1 prepares the relay 4 and 3. The operation of the latter will occur at the moment when the springs 13 and 15 of the key 12 are opened, i.e., when the line is not short-circuited and in both windings of relay 1 the same current is established, which will return the measles 17 to the normal position to contact 11. By closing the contacts 17- 11 energizes relays 4 and 3 because, despite until the power supply from the relay 2 is removed, the capacitor 22 connected in parallel to its winding will be discharged through it and this will keep the measles 19 in the pulled position.

FIG. 3 it can be seen that the cessation of current in the winding of the relay 1 does not stop the current in the winding of relay 2, but at the same time causes the current in the winding of relay 3 and 4. When activated, relay 4 changes the start and end of the primary winding of the supply transformer 5, and a high deceleration relay 3 via contacts 7-8 will turn off the linear winding of relay 1. The relay is 1-polarized, and therefore the current in its right winding will press measles even more strongly to pin 11 and, short circuit contacts 7-23, will turn on the secondary winding power transformer. Contacts 24-25 include the battery 18 in the primary winding of the transformer 5. At the time of closing the contacts 24-25 in the primary winding current will increase from zero to a maximum limited by barreter 26, due to which a pulse will appear in the secondary winding 9 pins 23-7, - advance all the selectors in the line by one step. After the end of the pulse, the capacitor 22 (it must be properly calculated) will finish its discharge, which will cause the opening of the contacts 19-20 and 19-21. This removes the power from relays 3, 4. Relay 3, having a parallel-connected capacitor 27, has its own core; will not let go, and the line will still be included in the secondary winding of the supply transformer, and the battery in the primary. Relay 4, releasing the measles, contacts switches the battery in the primary circuit of the transformer, than sends a calling pulse to the line in the opposite direction. The selectors move one more step. Since the code disks of all the selectors have pins through one hole, then, despite the termination in the current line, the selectors will be held by two steps. When capacitor 27 is discharged, relay 3 will return to its normal position and the circuit will be ready to receive the next pulse sent by key 12. The next time the line is short-circuited by springs 13-15, the same disassembled relay operation cycle will occur, which is shown in FIG. 3

A current pulse in a linear relay 1 (curve / 1 in Fig. 3) will cause a current in relay 2. At the time of the current termination in relay 2, relay 3 and 4 are triggered, and a calling impulse is simultaneously sent to the line through the transformer 5. At a moment close to the end the first ringing pulse, capacitor 22 is discharged, and relay 2 will release the measles. Termination of current in relay 2 will cause the relay core 4 to fall off, and this, in turn, will switch the calling battery poles and send a pulse of a different direction to the line. After the discharge of the capacitor 27, the switch 3 of the relay 3 will return to its normal position, and the circuit will assume the initial position.

It has been said above that the combination set is carried out by sending two-pulse series and single pulses.

The sending of one ringing pulse is carried out by the fact that on key 12 two protrusions for single packages are at a distance much shorter than is necessary for passing the entire cycle of FIG. S and, as soon as the measles of relay 4 disappears, at that moment the line is short-circuited by springs 13 and 15, and the second calling pulse is sent to the short-circuited line, which causes a large drop in the calling voltage, and the selectors from the second pulse are turned on

If they do not work and, consequently, if the pin is normally located on the code disk, the second pin will turn to the starting position.

FIG. 2 shows the code dial of the selector tuned to the first pulses of the ring key 12. The spring 13, located on the protrusion 14 of the key 12, will short the line and prepare the feeding point for making the call: at the moment of lowering and finding the spring 13 in the recess between the projections 14 and 30 on the line receives two pulses that advance the code disk in two steps. After the termination of the second pulse, the code disk will be delayed by the pin 31 (Fig. 2); consequently, any period of time can pass before the next sending of a two-pulse series, since the selector is already advanced two steps and is delayed in this position. Finding the protrusion 30, the spring 13 re-closes the line, preparing the feeding point, and when the spring is in the recess between the projections 30 and 32, two lines re-enter the line, advancing the code disk for two more steps and holding it on the pin 33. Finding the protrusion 32, the spring 13 will prepare the feeding point for sending a pulse, but during its time between the projections 32, 34 the selector will not receive two pulses, since this notch is much smaller than the rest and the spring 13 will meet the protrusion 34 at the moment of the beginning of the second impulse, therefore the second mpuls for all selectors okazhets "rubbed nnym in mind the short-circuit line. The selectors advance one step and, since there will be no pulses after this step, the measles of the selectors will become in the middle position, as a result of which all the selectors which in fifth place do not have a pin (the pins are located through one hole) will return to their original position, the selector of the corresponding setting has a pin in the right place (i.e., two pins near), so it is delayed by it.

In the same way, the code disk will continue moving until it reaches the ringing contact. Call

must be obtained when the spring 13 is located between the protrusions 35, 36. The protrusion 36 is a protrusion preparing the returning impulse, therefore, when the spring 13 is on it at the called station, the bell will ring. The bell selector circuit is open only when the spring is lowered into the recess between the projections 36 and 14. As the calculations show, when sending seventeen pulses and with two tuning pins, it is possible to get thirty different settings.

By increasing the number of pulses or adding a tuning pin, you can freely increase the number of combinations to the desired number.

Telegraph operation is superimposed in the conventional manner through coil 37.

The intercom is absolutely no different from a normal selector telephone circuit.

The subject matter of the invention.

Claims (3)

1. An apparatus for selective communication, characterized in that so that the current pulses that drive the feeding point relay from an intermediate point and the ring pulses of the supply transformer 5 pass through the line in a sequential order, a slow-acting relay 2 is used, which is assigned to prepare the device to turn on the relays that send call pulses to the line, contact 19 of which the relay is connected to the relay contact relay 1 in order to send the ringing pulse after the control pulse has been sent when the springs 13, 15 of the ring key 12 are open. 2. In the device according to claim 1, use for sending one pulse on the key 12 protrusions located at a distance significantly shorter than the distances of the other protrusions to close the line at the moment when the second pulse starts to send. 3. In the device according to claim 1, use on the code disks of pins installed through one hole and the installation of the setting pins adjacent to the main one. 33