DE387071C - Call dialer to display the station from which the call originated - Google Patents

Description

The purpose of the paging dialer of the invention is to indicate to the station receiving the call by wire or wireless the station from which the call is originating.
In order to achieve this, each station, a plurality of which is connected to a network, uses a characteristic letter or a group of letters which form the callsign and which are sent out by the calling station for the call. The callsign consists e.g. B. from Morse code, i.e. from groups of short or long characters.

The call indicator comprises as many lamps or flaps as there are stations in the network are. These lamps or flaps are controlled so that when a callsign is sent out, the lamp or flap corresponding to the callsign is switched on and at the same time an acoustic alarm device comes into effect.

The calling station sends out the callsign, and the called station at which the call indicator is arranged, reads from this the calling station, exactly in the same Way, as it takes place in the usual telephone on the switchboard, if the call lamp of a station lights up.

To explain the arrangement according to the invention, for example, in the following an embodiment on the basis of the drawing, which shows the general scheme of the call indicator is described.

For the sake of simplicity, the description and scheme is limited to one apparatus, which can receive Morse code consisting of three or fewer characters. From the explanations it can be seen immediately infer that without changing the basic arrangement of the apparatus as well can be used for Morse code composed of more than three characters. The call indicator which converts the Morse signals comprises two groups of organs, one of which is for determination the nature of the incoming character, dot or dash, serves, while the other serves the The order of arrival of the successive characters that make up the callsign is monitored and depending on this order Establishes a suitable circuit to put the corresponding lamp or flap into operation.

The group of organs that determine the nature of the incoming character (Point or dash) serves, has a contact ι, which by hand or by a suitable relay controlled by wire or wirelessly by the signals sent is closed will. The electromagnet 2 of the button is controlled by this contact. This Electromagnet 2 controls the protective relay 4 again through its contact lever 3, which, when energized, in 5 the circuit of the delayed working electromagnet 6 6g interrupts. The latter leaves its contact levers 7 and 8 after a certain time fall off. The contact lever 8 of the electromagnet 6 in connection with the contact lever 9 of the protective electromagnet 4 keeps the electromagnet 4 energized until the de-energized become electromagnet 6 can drop its contact lever 7,8. At this moment also puts the contact lever 7 the positive pole of the power source to that with the contact lever 10 of the electromagnet 2 connected line.

The delay relay 6 is set in such a way that the closing of the normally closed contact 7 occurs only after a time that is longer than the duration of a point, but shorter than the duration of a stroke. If a dot character is received under these conditions, so the contact lever 10 of the relay 2 is in the rest position, and consequently the point line 11 is energized

*) The patent seeker stated that the inventor was:

Louis Luden Eugene Chauveau in Paris.

BS7071

is set, but if a line character is received, the contact lever is located io in its working position, and the streak line 12 receives power.

By the protective electromagnet 4, when the contact lever 5 is in the working position is located, the delayed working electromagnet 13 is controlled. This monitors the length of the pauses between characters. If this period is long enough, so lets the electromagnet 13 drop its armature 14, thereby igniting the lamp or the flap is triggered.

The armature 7 of the delayed working electromagnet 6 also acts with a Working contact together, and the electromagnet 2 is still skontakthebel with an auxiliary 15 equipped. By the contact lever 7 in the working position and contact lever 15 becomes the character line 16 at the beginning energized each character.

The parts described up to now therefore firstly allow the dot line 11 or the stub line 12 to be energized, depending on the type of character received, and secondly, the character line 16 to be energized at the beginning of each character. The group of organs used to monitor the sequence of arrival of the successive characters forming the call sign consists of a point electromagnet 20 and a bar electromagnet 21. Of these electromagnets there is a number of each type which is equal to the maximum number of characters of which the ' callsigns' or 'call signals' to be received can consist. All point electromagnets are connected to the point line 11 and all bar electromagnets to the bar line 12. An electromagnet 22 is connected in series in the common return line of the point and bar electromagnets of the same character. The electromagnet 22 of a. Accordingly, the sentence comes into effect at the same time as the dot or dash electro magnet of the same sentence.

If the apparatus is in the rest position, the series electromagnet 22 (1) of the first character is connected to the negative pole alone closed. As a result, the incoming first character can only affect the electromagnets of the first sentence. At the beginning of each character, however, the character line 16 is energized, as previously described. As a result, at the beginning of the second character, the character electromagnet 23 (2) of the second sentence is excited and \ applies the negative pole to the electromagnet! (2) of the second sentence. Furthermore, either the point electromagnet 20 (2) or the bar electromagnet 21 (2) of the second set is excited, and consequently also the electromagnet 22 (2).

At the beginning of the third character, the electromagnet 23 (3) is energized and sets the Negative pole to the electromagnets corresponding to the third set.

The point electromagnets 20, the bar electromagnets 21 and the character electromagnets 23 are provided with safety contacts 25, so that after receiving a In the event of a surge current these electromagnets remain switched on, eliminating only the ones received Sign corresponding electromagnets can be excited.

The point electromagnets 20 and the bar electromagnets 21 are still with a certain number of contacts 26, which the lamp or flap circuit steer. The combination of these contacts is such that only the circuit of the lamp or the flap is closed, which corresponds to the received signal. This closure will only take place if the last received character is followed by a sufficiently long pause so that there is a delay working break relay 13 can drop its anchor. The lamp then lights up go or the flap falls.

The point electromagnet 20 of a set interrupts the circuit of the bar electromagnet in 27 of the same sentence and vice versa. It is just a safety measure.

The series solenoid 22 (2) of the second set interrupts the circuit of the lamps or flaps corresponding to the single character letters ET at 28 (1). Likewise, the series electromagnet 22 (3) of the third set in 28 (2) breaks the circuit of the lamps or flaps corresponding to the _{two-character letters INAM i u g.}

In series with the lamps or flaps, an electromagnet 29 is provided, which through its contact 30 closes the circuit of an alarm clock 31 and the circuit of the electromagnet 2 interrupts. The alarm clock sounds and received signals can no longer influence the apparatus. This can be returned to its rest position are with the help of the lever contact 32, which the supply circuit of the overall arrangement interrupts.

Furthermore, a sign electromagnet 33 connected to the sign line is provided, which controlled by the row electromagnet 22 of the last character on his Contact 34 the supply current source of the appa-

rates can be switched off if the number of characters received is greater than that for which the apparatus is intended for.

The essence of the invention is of course not limited to the example here apparatus 1 described restricted. The apparatus can easily be trained for a case in which the received signals contain more than three characters. It is the same

ίο not difficult to use the apparatus for selection of signals that have more than two different durations (point and Line), and in which the characters are distinguished by another feature than the length of time would differ (intensity, frequency, etc.). The special one The training of the simple and delayed relays is irrelevant as soon as they are only in the for those in question here

works for the purposes required.

Claims (6)

Patent Claims: i. Call selector to display the station from which the call originated, in particular for telegraphy and telephony purposes, which is used to reproduce signals which consist of groups of characters of different duration (dots or dashes of the Morse code, for example), characterized in that the same mainly consists of two relay groups, of which the relays (2, 4, 6) of the first group manage the selection of the characters according to their duration ^; digit by the delayed relay (6), which only comes into effect after a time interval, wel-! ches is greater than the duration of a short but shorter than that of a long character that:. Contact lever (7) this delayed acting relay is controlled, which in connection with the contact levers (10, 15) of the ordinary relay (2) energizes a line (11) when the symbol is short . is, another line (12), if the character is long, and also a line (16) at the beginning of each character, by which current surges the relays (20 to 22) of the second group are influenced, which the order of the characters, which a station form the characteristic monitor, and of those provided as many sets are as a sign may be made of which the product to 'receiving signal, each of said sets of a connected with the dot line (11) relay (20), a with the. Streak line (12) connected relay (21) and a permutation relay (22), which, after the set to which it is assigned has come into effect, prepares the response of the following relay set. 2. call selector according to claim 1, characterized by the use of a under the influence of the current impulses of the transmitter station intermediate relay (4), through which the delay relay (6) at every signaling is switched off and also when a short character is received beyond the duration of this character is kept currentless until the armature of the relay (6) has dropped out. 3. Rufwähler according to claim 1 and 2, characterized in that the permutation relay (22) of a sentence at the moment it comes into effect, the circuit of the sign relay (23) of the prepared for the following set, with this relay finally at the beginning of the the following character is influenced via the line (16) and the overall arrangement is such that the relay sets are consecutive to the extent of the incoming characters come into effect. 4. call dialer according to claim 1, 2 and 3, characterized by an additional relay (33) 5 which is energized after receiving the correct last character of a signal and, if one Another sign follows, which prevents the call device from being triggered. 5. call selector according to claims 1 to 4, characterized by the use a slow-acting relay (13), which under the action of the received signals is excited and the actual call device is monitored in such a way that this can only be triggered if there is a sufficiently long pause after receiving a suitable signal follows. 6. call dialer according to claim 1 to 5, characterized by a relay (29), which comes into effect at the same time as the actual call device and in addition serves to activate an alarm device and to power the circuit to interrupt for the prayer key in such a way that any subsequent characters have no effect until the call dialer is returned to its original position by pressing the button (32). For this purpose ι sheet of drawings.