SU306A1 - Telephone-awareness apparatus - Google Patents

Description

The proposed apparatus is intended to indicate when the absent subscriber returns and record messages during the absent subscriber.

FIG. 1 - 11 shows the diagram of the apparatus.

The task is divided into several parts: the subscriber is not present; from the station ringing t; some device should automatically turn on the device, replace the telephone, and so let the station know that the handset is off.

From the absent subscriber there should be a signal that the subscriber has no aom and an indication of the time when he will be.

A device (phonograph, telephone set, sonograph, telegraph apparatus, device for this purpose, etc.) must be included to record the message.

At the end of the recording, the entire device should turn off and stop.

The device must be so arranged that for the telephone operator at the station the absence of the subscriber is not noticeable.

Line goes to key D (Fig. 1); the latter, in the resting position, stands on the contacts of the lh and, therefore, turns on the telephone set. If the subscriber transfers the key to the j - / I contacts, the telephone is turned off, and the telephone is connected to the line to record the message. There is no means), but a direct current electromagnet Sj and a capacitor Cj will be connected to the line. If the telephonist sends a call from the station, then electromagnet 5, there is no core, and contact 6 will close electromagnet 5 to local battery i. Therefore, electromagnet Sj will attract the core until electromagnet S acts, which opens contact 8, and, therefore, the circuit of the electromagnet Sj. The same electromagnet Si closes contact 7, turning on an in-line device for L-1. As soon as contact j is closed, the station receives a signal that the subscriber has lifted the handset. At the end of the recording, the electromagnet S, j should act (from further it will be seen how it is done), the contact S is interrupted, and, consequently, the contacts of the .6–7 line remain only S and GI; the station appears to hang up. The electromagnet Sj and bell S may also be connected in series, as in FIG. 2, in this case, the electromagnet 5i may be withdrawn with less self-induction. The / (key switch for the ringing circuit. In the normal position, the telephone set is turned on via the I / z contacts, the battery circuit i; isolated. When switched to the contacts, the battery circuit g can already be turned on when supplied from the call station; contacts j-4 are connected to the lines of the direct recording apparatus A and make it possible for the battery to operate C. Finally, if it were required, the key K can always be connected to the lever / (Fig. 3): when the handset is hanging, the telephone is turned off, the recording device A is turned on; when the handset removed, vice versa. records, in this case, should be designed so that it starts to act not immediately after the call is made, but after that average time during which the subscriber usually comes to the device. If the subscriber is at home, he picks up the phone and speaks; - then the recording apparatus operates.

Whatever the recording apparatus, it must be connected to the engine either mechanically or electrically. As soon as, when applied, the electric motor, the battery circuit tl is activated, the contact y is closed, and the electric motor E operates. With mechanical tia engines, the starting device could operate the same electrome nit 6, (Fig. 4). It is assumed that Paulsen's telephone scanner was used as a recording device as it is commercially available. On the side of the device there is a scale indicating the duration of the call and an arrow moving along the scale when the device is operating. Over the existing scale is placed a ticker with special thin contacts a-b-c (Fig. 5), the induction coil / i is included in the circuit of the recorder, the primary winding of which is connected to the buzzer circuit Z. During operation of the apparatus, the arrow moves along the scale, therefore, it can touch any of the contacts a-b-c. When it touches the contact and with, the buzzer Z is closed and the phonic current is sent to the line. Suppose that in the resting position the arrow is ka.toit between the contact b and c. Call station current is sent from the station; contact (Fig. 4) is closed; motor E begins to act; the arrow F is moved to the right, it touches contact c, the phonical current acting on the caller's handset is sent to the line; This signal serves as a sign, firstly, about the absence of the subscriber, and secondly, that the caller can call or report something. The caller says that his speech is recorded on the telegraphograph wire, while the arrow F moves to the right; after some time sufficient for the subscriber to call himself and briefly report the reason for the call, the arrow / reaches the contact a, the buzzer again acts; this is a signal that the chain is breaking. The arrow F reaches the contact 6, the electromagnet Sj acts, the contact 8 closes, the battery circuit e is interrupted, the contacts 6, 7. 9 (Figs. 1, 2, 3, 4) are interrupted, all the devices are turned off, the signal appears on the station . And since the electric motor E does not stop instantaneously, the arrow will have time to leave contact b and will be between and g; battery circuit with open circuit. Instead of the device fi | -. 5 may be applied other (Fig. 6). The arrow / is connected to the rotating axis of the recording device, via a gear transmission (or by another one), moving in a circle. In the resting position, the arrow stands between b c. If the call is followed, the arrow begins to move, it touches contact with, a phononic signal about the absence of the subscriber is sent to the line and about the possibility to record a message. Recording can be done all the time while the arrow makes a turn. Finally, the arrow reaches 6, everything is interrupted, at the station hang up.

the arrow when the engine is stopped becomes between 6 and s and so on.

If the absent subscriber wants the device to report the time of its possible return, then the simple | contact with can be replaced by difficult | by contact. If it is enough to indicate the hour in which he will be at home, for example, the subscriber will be at home at three o'clock, then the contact with is replaced by a triple contact (Fig. 7), and then three pulses are sent to the line. If it is desirable to show the time to within | a quarter of an hour, then two buzzers are used with different oscillation frequencies of the koreas: one buzzer will show the quarters, the other a clock. One buzzer can also be used, but then there should be a pause between the quarter and clock signals. I

The device of FIG. 6 gives the opportunity to-; An agent is one combination of signals; Gimi All the channels are pre-made on special plates B (Fig. 8). The plate b can be inserted into special cuts in disk D (the surfaces | of the disk and the plate may coincide) and can be replaced by another plate. Motor E can be turned on with the help of a special electromagnet 5z included in the battery circuit c (Fig. 9). j

A complete recording scheme with; boron with Paulsen T's telegraphs are shown in FIG. 10. But the telegraph with equal success can be replaced by another recording device,

According to the author, the disadvantage of the device is that for recording a conversation, d) Regardless of its duration, the same thing is allotted; time (turn of the arrow /). Then, the device will have to act on every call, even if the caller has no desire | speak. If it is desired that the start-up of the recording apparatus be dependent on the caller, then the subscriber’s line in parallel with call 5 is connected in series with the capacitors Cj and Cd coherer / (2 (F-I), {

i fixed on rotating during; action motor axis. The subscriber, not receiving a response and desiring to report something, albeit in the absence of the called

the subscriber sends to the line the phonic current (from the buzzer). The phonical current acts on the coherer Aj, the electromagnet Si attracts the core, closes, through pin 6, the battery circuit tl in addition to the coherer and through pin g; - motor circuit E. The motor comes into action, the coherer rotates, and its initial resistance is restored. The battery circuit g is interrupted when the electromagnet S2 is acting. Otherwise, there is no difference with the described circuits. The complete diagram is shown in FIG. 11. If the subscriber receives via contact a and arrow F a signal about stopping the conversation without knowing what he thought to finish, then he only needs to immediately turn on his buzzer. When arrow G contacts contact 1, electromagnet 5-2 opens contact iV, but the phonical current coming from the line acts at this time on the coherer, therefore, the electromagnet core S remains attracted, the battery circuit fi does not open. Batteries / and c-, can be combined. If it were required, the coherer / Q can be connected in parallel to the call only during the absence of the subscriber; For this, you would have to enter a special key Liish acting simultaneously with the key f (,

SUBJECT OF INVENTION.

1.Telephone Awareness Device, characterized by the cumulative use of a) three contacts a-b-c (Fig. 5), of which a and c are used to close the circuit of the picker Z, which sends a phonic signal current to the line, and the device's shutdown contact, 1 -o for recording by closing the electromagnet circuit .Sji opening contact V and thereby switching off the battery tl, which stops the electric motor, which rotates the axis of the device used to record sounds; b) arrows D, or moving along the H1 scale (Fig. 5) of the recording device, or rotating on the axis associated with the recording device, n closing the contacts a-b-c.

2. Variations of the apparatus described in paragraph 1, characterized in that instead of a contact contact with a complex (ianr. Triple) contact is applied (Fig. 7), due to which several current pulses are sent to the line, and all signal contacts can be made in advance on plates B (Fig. 8).

3. Modification of the apparatus described in paragraph 1, characterized by

switching on and the subscriber's line parallel to bell 5 (fig. 11) of the coherer / (in series with capacitors C and Cj, which coherer is connected to battery circuit e and fixed on an axis rotating during the operation of the recording device, and the coherer comes and action from the phonic current sent by the caller to the subscriber.

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