DE157797C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The invention relates to common line telephone systems in which any subscriber station connected to the common line from the central office excluding the other subscribers connected to the same line can be called up and brought into connection with the calling station. According to the subject of the present innovation a special device is made for this purpose at each subscriber station , in which the electromagnet, for the purpose of giving the wake-up signal, a To influence the locking device of the alarm device, as well as a device to return the parts to their original position in motion, with three anchors is provided, one of which causes the release of the alarm clapper Armature only activated by a direct current passing through the electromagnet in a certain direction while the other two anchors are polarized and subject to such influence are that of the device for returning the parts to the original Position influencing anchor only by an opposite direction to the above moving direct current and the other activates the alarm polarized armature is only vibrated by an alternating current.

Here, the selection of the subscriber station to be called becomes such brought about that a respective number of the station to be called Power surges are sent through the common line, causing to the subscriber stations located, explained in more detail in the description, with the above-mentioned electromagnet and adjustment members connected to the armature arrangement are influenced. The required current impulses are emitted from the mediation office, on which any appropriate arrangements for this purpose may be present.

Fig. Ι is a front view of the device. device on a subscriber station, FIG. 2 a · -. Side view of the same, FIG. 3 a horizontal section along the line x-3 of FIGS. 1, 4 a detail. Figures 5 and 6 are circuit diagrams.

As can be seen from FIG. 1, the device is provided with an electromagnet α which has two coils and which is provided with an armature b which is rotatably mounted ^{at Z> 2} and on which there is a bell clapper d . The armature b is polarized by the permanent magnet c; is through the line one

If alternating current is sent, the armature b is alternately attracted by the cores of the magnets a , causing the clapper d to vibrate, as a result of which a signal is given.

However, so that this signal is only produced at the selected subscriber station, a disk e is provided which forms a stop and sits firmly on a rotatable vertical shaft e ² mounted in bearings e ^3. Since the disk is, as can be seen from FIG. 1, under one arm of the armature b , its oscillation will as a rule be prevented because the arm immediately hits the disk. However, as can be seen from FIG. 4, the disk is provided ^{with a recess e 4.} These recesses are made on the disks of the various participant positions at different points on the disk e , so that if the disks are rotated uniformly at all participant positions until the recess e ^{4 of} the disk at one of the participant positions is under the arm of the anchor b , the notches on the discs of the other participant sites will be moved away from the anchor arms. The various disks are arranged to be rotated step by step in response to pulses of direct current sent from the central office through the line in a particular direction. To effect this adjustment, is at each disc e on the shaft e ² of the same a ratchet wheel e ⁶ is provided, seen in the teeth, as shown in Fig. 3, g the latches and / intervene which f from the other anchors BEZW ^2. g ^{2 of} the electromagnet α can be influenced.

If a current surge now passes through the line AB (Fig. 5 and 6), the non-polarized armature / ^{2 is} attracted, which thereby brings its pawl / with the teeth of the ratchet wheel e ^e into engagement and this, as shown by the dashed lines in Fig. 3 indicated, rotates around a tooth, the

. Ratchet wheel by the in the rest position

· - borrowed latch g on the return is prevented.

The pawl g has been brought into engagement with the ratchet wheel in that the appropriately polarized armature g ^{2 is left} in the rest position shown in FIG. 3 ^{by the same current impulse by which armature / 2 was attracted.}

As can be seen from Fig. 3 and 4, a spring g ^{3 is} attached to the armature g ² , which allows the movement of the pawl g over the teeth of the ratchet wheel e ^tt when the same is rotated by the pawl /.

In order to trigger the ratchet wheels e ° and thereby the disks e again after a conversation has taken place, a current impulse is sent in the opposite direction as the one mentioned above through the line AB , whereby the polarity of the magnet coils α is reversed and the armature g ^{2 is} consequently moved into the direction indicated by FIG. 4 position shown in full lines is swung. Although the non-polarized armature / ^{2 is} attracted again by this current surge, the ratchet wheel e ^ü and thus the disk e can still return to the original position, since the armature f ^{2 is provided} with a spring f ³ , which As soon as the last-mentioned current surge passes, the armature pulls into its rest position shown in full lines in FIGS. 3 and 4, whereby the pawl rotatably mounted in the armature f ² / swung back by striking a stop / ⁴ and disengaged from the teeth of the ratchet wheel e ^ß will. The ratchet wheel e ⁶ and the disk e are turned back by a spring e ⁵ , indicated in FIG. 1, which was tensioned when the disk e was rotated forwards.

So that the unwanted triggering of the disks e on the part of the wake-up current is prevented by influencing the armature g ² , armature / ² , as can be seen from FIGS. 3 and 4, is provided with a locking device / ⁵ for the armature g ² , which the end of the the latter, when the armature / ^{2 is} withdrawn, ie in the rest position, is detected and thereby holds the armature g ² and the pawl g in the position shown in FIG. However, since the armature / ² is not polarized and is also provided with the spring / ^3, so remains the same when the alternating current arrives, but in the direction shown by Fig. 3 in full line position, so that therefore the movement of the armature g of ² as a result the blocking is prevented, while as soon as a direct current goes through the line to trigger the disks e , the armature f ^{2 is} attracted and, as a result, the armature g ^{2 is also} released.

In order to prevent the use of the telephone set at all subscriber stations with which a connection is not desired during use from one point, a pin / 1 ^{2 is} attached to the receiver hook h , above which a disc j is located which forms a stop is also arranged on the shaft e ² . Each of the disks ^ on the various subscriber stations is provided with two openings j ² and j ³ , of which the former is usually in line with the pen h ² on the receiver hook h when the line is idle, see above

that when the handset is lifted, the handset hook can move upwards. But if the disks j of the other subscriber stations have moved together with the disks e from their normal positions when the connection is established, does the pin /? ² on the receiver hook h against the surface of the panes and thereby prevents the receiver hook h from moving upwards and thus from closing the speech circuit.

The openings j ³ in the disks j are in a manner similar to the recesses e * in the disks e on the various subscriber locations at different locations of the disks j , in such a way that when the recess e ^{4 of} the disk e at a subscriber location is located under one end of the armature b , and the opening β on the associated disc j is located above the pin h ^{2 of} the receiver hook h so that the receiver hook can move upwards at this subscriber station and close the speech circuit. Since when the line is in the idle state when the receiver is lifted from the hook (when a subscriber wants to call another) the pin ti ² enters the opening j ^{2 of} the window, the wave e ² and thus the disks are at the subscriber station of the calling subscriber j and e prevented from rotating.

In Fig. 5 is a schematic of electrical circuits is shown, wherein the power source is formed by a battery C set up in the switching office, one pole of which is grounded at G.

When moving the

Hook h is temporarily made contact with ground connection G ² at h ³ so that when the hook is moved the common line wire A is momentarily earthed, creating the following circuit: From battery C through the conductors I, 2, the pawl spring w ² , line wire B and from there through the magnets α of the various subscriber stations connected in parallel to line AB to line wire A and from there to earth at G ² .

The current goes through the various subscriber stations in the direction indicated by the arrow, whereby the armatures f ' ^{2 are} tightened at all subscriber stations and the pawls are moved and the ratchet wheels e ° and the disks e are rotated by one step, so that the speaking sets are locked out at all subscriber stations with the exception of those at which the receiver is picked up. As noted, this circuit is only temporary, since the circuit is open as soon as the receiver hook is in its upper or lower position and is only closed for a moment by the movement of the receiver hook.

The battery C is also used to bring a signal in the switching office to respond, for example by means of a swing-out switching element H ' ² , which sits on an armature H ³ rotatably arranged between the poles of two electromagnets H ^ and H ^{h, a} Lamp H is made to glow. In Fig. 5, the armature H ^{ä is shown} in its rest position. If the lead wire A is now temporarily connected to the earth at G ² , a circuit is established from the battery C through the conductors 1,2,3,4 and the solenoid H ^ and from there through the conductor 5 and the lead wire A to the Earth closed at G ² , thus the armature H ^{3 is} attracted by the magnet H ^A and a circuit is closed through the switching element H ' ² and the conductor 7 containing the lamp H to earth at G ³ , whereby the lamp H is lit. As a result of this sign, the official in the switching office puts the interrogation plug η η ² into the jack ^{mni 2} , whereby the direct path of the current from the battery C to the line B at the contact ni ^{2 is} interrupted, so that no further movement of the receiver hook is now possible Has more influence on the switching devices at the subscriber stations. After the officer has established the connection between two subscriber stations by inserting the connecting plug N iV ² into the corresponding jack, the desired subscriber station is called by the corresponding number of power surges.

Two switching springs 0 o ² and ρ p ' ² are used for this purpose ; through the first, the current impulses emanating from the battery C are sent into the line of the desired subscriber, while through the second springs the wake-up current impulses generated by the inductor M are sent into the line. The process here is as follows:

The officer first pushes the switching springs 0 or ² apart to select the desired station, whereby the contact o ² connects the sleeve N of the call plug, which corresponds to the line wire A of the calling subscriber, to ^{the earth at G 5} , during the contact ο the tip JV ^{2 of} the call plug and the lead wire B connects to the battery C. This causes a rush current in the above-described

The direction indicated by the arrow is sent through the line of the desired subscriber, and the desired station is selected by a corresponding number of such power surges. If the officer then pushes the switching springs ρ ρ ² apart, the inductor M is connected to the line at which the desired station is located, whereby the wake-up signal is given

ίο will.

The closing signal at the office is given by a magnet q ² , which is excited when the receiver is hooked into the receiver hook in that at h ^s a temporary electrical current is again established. The circuit here is as follows: battery C, conductor 1, 2, 3, 4, magnet H ⁵ , conductor 8, spring m ² , which, when the plug η η ² is inserted into the pawl, comes into contact with the contact m ³ is located, conductor 10, electromagnet q ² , conductor 9 to the plug neck η connected to the lead wire A respectively. N; the current flows from lead wire A back to battery C via h, h ³ and G ^2. However, this current does not extinguish the lamp H , since in addition to the circuit described there is another shorter circuit through the conductor 5 to the lead wire A and from there to earth, which includes the magnetic coil H ⁴ , whereby it is more strongly excited than Magnet coil H ⁵ . When the final signal arrives, the official of the switching office on the subscriber stations therefore restores the original state by sending a current from the battery C through all the coils α of the electromagnets in the direction opposite to the direction of the arrow. This is done, as will be explained in more detail later, by means of the switching springs r r ' ² , whereby the lead wire B is grounded and the lead wire A is connected to the battery C. The official pushes the switching springs r r ² apart, however, only after he has convinced himself by pushing apart the springs ss ² intended for eavesdropping that the conversation between the participants has ended.

The current through which the switching devices on the subscriber stations are restored to their original state runs as follows: Battery C, conductors 1, 2, 13, spring r, conductor 14, spring s, plug line 9, plug sleeve n, latch spring m, lead wire A, then through the electromagnets α of the various subscriber stations in the opposite direction to the arrow to line B, latch spring m ² , plug tip n ² , conductors 10 and 15, springs s ² and r ²

to earth G ⁴ . ■ '. :

The signal lamp H is also influenced by the switching springs rr ^{2 in} that the following circuit is closed by the electromagnet H ^z : battery C, conductor 1,2,3,4, magnetic coil Η ^β , conductor 8, contacts m ³ m ² n ² , Conductor 10, 15, springs s ² r ² , to earth G ⁴ . In addition to this current path, another one goes from the battery C through the magnetic coil H ⁱ and the conductor 5 to the line wire A and from there through the various subscriber stations to the line wire B and back to earth G ⁴ via m ² , n ² , 10, 15, s ² , r ² .

Such a termination signal arrangement, as described above, is on the central office available for each connected subscriber station.

As can be seen from the scheme (Fig. 6), however, the production of the earlier State on the various speaking instruments without the official at the switching office.

In Fig. 5, the fact that the line wire A is temporarily grounded when the handset hook h slips past the contact h ^s , a current is sent through the line AB , as a result of which the microphone units located in the same, with the exception of those at which the handset is picked up, be locked out. The circuit closed in this way in the circuit arrangement in FIG. 6 is as follows: battery C, conductor 1, 2, terminals 2 ^a , 2 *, conductor 2 ^C , call electromagnet 2, ^d , conductor 2 ^e , latch spring rn ² , lead wire B, through the magnets α on the various subscriber stations to the line wire A and to earth at G ² on the calling station. As the flap of the calling electromagnet falls, the circuit is interrupted at 2 ^a and 2, ^b , as can be seen from FIG. However, as soon as the officer has put the plugs into the corresponding jacks, a flap influencing the final signal is brought to fall by hanging the receiver in the receiver hook on one of the two connected subscriber stations, and since there is a flap for each of the two connected microphone units, thus the circuit of the current sent through the line in the opposite direction is not completed until both valves have fallen. By hanging this receiver on the line shown in Fig. 6, for example, the following circuit is closed: Battery C, conductor 1, ΐ6 ^Λ , magnet 1 6 ^b , which serves as the final signal, plug sleeve n, pawl spring m, lead wires to earth at G ² , over the handset hook h.

When the flap for the final signal falls, a conductor 17 leading from the plug tip n ^{2 is} connected to a conductor 18, which can be connected to earth by conductor 19, and z \ var by means of the flap for that influenced by the electromagnet i6 ^B Closing signal which belongs to the other telephone station and which is excited by the conductor i6 ^A after the receiver is hung up on the corresponding telephone station. After both final signal flaps have fallen, the following circuit is closed: From battery C, conductor ι, ΐ6 ^Λ and \ 6 ^A to the sleeves η N of the plug, from there through both lead wires A, the magnets a, the lead wire B, the plug tips n ² N ' ² and the conductors 17, 18 and 19 to earth, whereby the original state is restored on the call stations.

Claims (6)

Patent Claims: 1. Device on telephone circuits with a common line to enable the sole call to the desired subscriber station excluding all other locations, characterized in that the electromagnet (a) of each subscriber station is provided with three anchors fbf ² g ² ) , one of which is unpolarized armature ff ² j when the one polarized armature is not excited fg ' ² ) a locking device (e) is moved through which the effectiveness of the second polarized armature (b) , which activates the wake-up device in a known manner, is prevented or. is limited, while the first polarized anchor (g ' ² ) at its. Excitation a device for returning the parts to their original state Affected position. 2. Apparatus according to claim 1, characterized in that first the rotation of the locking device (e) by the interaction of the unpolarized armature (f ² ) with the one polarized armature fg ² ) happens in such a way that the former ff ² J by direct current surges a is set in oscillation in a certain direction, while the latter fg ² ), which does not respond to these current surges, prevents the locking device (e) from turning back with its pawl (g) , whereupon the alarm clapper (d) vibrates through the polarized armature after the setting has been made (b) is brought about by means of alternating current in a known manner, while the restoration of the rest position of the device is caused by the attracted polarized armature (g ² ) by a direct current surge flowing in the opposite direction to the first direct current. 3. Device according to claim 1, wherein the locking device from a disc provided with a recess, which so to the alarm anchor is arranged that it prevents its vibrations as a rule, characterized in that the disc (e) only then the sounding of the alarm clock respectively. the vibrations of the alarm clapper (d) are allowed if the recess (e *) of the disc is brought into line with the alarm anchor (b) . 4. The device according to claim 1, characterized in that the locking device fe) setting in action armature ff ² J with an arrangement ff ⁵ ) is provided to the armature fg ² ) during the excitation of the electromagnet fet) by the wake-up current in his To hold position, whereby the untimely influencing of the device for returning the parts to their original or rest position is prevented. 5. On a device according to claim ι an arrangement that causes a contact is temporarily closed during upward and downward movement of the handset hook at any subscriber station, through which a branched off from the subscriber line and through. the switching office established circuit independent circuit is closed, characterized in that a current impulse is sent through each subscriber station through this circuit, such that at the temporary closure (at / 1 ³ ) at upward • Movement of the handset hook fh) by the current surge the locking disks fe) at all subscriber points with the exception of the one where the hook is moved, rotated by one step, so that there can be no activation at those subscriber points by picking up the handset, because one over The disc (j) located on the receiver hook fh) and rotating together with the locking disc prevents the receiver hook from going up. 6. An embodiment of the device characterized by claims 1 to 5, in which a closing signal device is provided at the switching office for each subscriber line, characterized in that these closing signals (ιό *, i6 ^B ) in the particular, im Claim 5 mentioned when hanging the listener in a known manner for an instant closed circuits (C, 1, i6 ^a , 16 *, η, m, A, h, h ^s , G-, C) of both participants are, which circuits after Excitation of both final signs by their flaps close another electric circuit (C, i, i6 ^a , i6 ^b , n, m, A, a, B, ηΐ ² , ή ¹ , 17, 18, 19, CyI, by which a current impulse is excluded the central battery (C) is sent by the electromagnet (a) to the various subscriber stations in such a direction that the switching device is returned to the rest position on all subscriber stations. 1 sheet of drawings.