DE257082C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

■ -JKS 257082 -Class 21 a. GROUP

SIMON FUTRAN in CÖPENICK.

the connection is effected by the subscriber stations.

Patented in the German Empire on June 30, 1910.

The heretofore known semi-automatic telephone connection systems in which the Separation of the connection takes place automatically, based in principle on the mechanical Blocking of the switching device during the call.

The present circuit creates a new type of connection cabinet, in which the connection is made by means of a handle on the cabinet, held electromagnetically by the connected devices and the connected devices are automatically disconnected by hanging up the handset. The connection is established So on the closet, the separation of the same, however, automatically by the connected Apparatus.

The devices are connected to each other in the following way:

Around each subscriber pawl a number of connecting pawls is grouped in a circle, and each connecting pawl of each group is connected in parallel with one connecting pawl of each of the other groups. Thus, connection pawl .1 of the first group Y is connected in parallel with the connection pawl 1 of all other groups Y ₂ , Y ₄ , as are the connection pawls 2, 3, etc. of each group with the corresponding connection pawls of all other groups. This results in rows of connecting pawls, the number of which, as in normal cabinets, corresponds to the "pairs of plugs, the number of which is equal to the fifth part of the number of subscribers. If two subscriber pawls are now placed on one and the same connecting row, they are connected to one another. For connection the other subscriber lines are used by the free connection rows.

Occupancy indicators are used to check which connection rows are free. the Each subscriber pawl is connected to a connecting pawl by means of a two-armed one double-pole switch, the two arms of which are conductively connected to each other and whose poles are isolated from each other.

The. The connection is made in the central battery system by electromagnetic means a continuously circulating current, its circuit by hanging the handset on the extension interrupted, held, whereby the switch disconnects the connection.

The drawing represents an embodiment of the object of the invention for central battery systems represent.

The center is called by lifting the subscriber's handset, thereby closing the following circuit via the call relay AR : positive pole of battery B ₁ , choke coil D ₁ , line 4, subscriber jack TK ₁ , Fe-

Claims (4)

dem4, 5, line5, toggle button ST ₃ , Federn4,5, line 5, through the subscriber line T ₁ , line 2, toggle button RT ₁ , springs 2, 3, line 3, subscriber handle TK ₁ , springs 2, 3, line 2 , 3, toggle button AT ₁ , springs 6, 5, line 5. Call relay StR ₁ (which closes a local circuit from a power source S ₂ for the call sign S ₁ when pulled) back to the negative pole of battery B ₁ . Closing this circuit will place the call. The control center queries using the toggle button KT ₁ by moving springs 1 to 4 onto the query spring set / IT ₁ , thereby closing the following circuits: a) Microphone circuit for the interrogation apparatus MT: positive terminal of battery S ₁ , choke coil D ₁ , line 4, subscriber jack TK ₁ , springs 4, 5, line 5, call button RT ₁ , springs 4, 5, interrogation button AT ₁ , springs 3, 4 , Answering machine MT, answering button AT ₁ , springs 1, 2, line 2, call button RT ₁ , springs 2, 3, line 3, subscriber handle TK ₁ , springs 2, 3, line 3, answering button AT ₁ , springs 6, 7, Resistor W to the negative pole of battery B ₁ back. b) Microphone circuit for subscriber T ₁ : positive pole of battery S ₁ , choke coil D ₁ , line 4, subscriber jack TK ₁ , springs 4, 5, line 5, call button RT ₁ , springs 4, 5, line 5, subscriber line T ₁ , Line 2, call button RT ₁ , springs 2, 3, line 3, subscriber jack TK ₁ , springs 2, 3, line 3, • Inquiry button AT ₁ , springs 6, 7, resistor W to the negative pole of battery B ₁ . c) Aural circuit: subscriber line T ₁ , line 2, interrogation button / IT ₁ , springs 2,1 , interrogation apparatus MT, interrogation button / IT ₁ , springs 4, 3, line 5, subscriber line T ₁ . The control center calls subscriber T _{1 by pressing the AT 1} call button and closes the following circuit: Inductor /, call button RT ₁ , springs 1, 2, line 2, subscriber line T ₁ , line 5, call button RT ₁ , springs 5, 6, inductor /. The center connects two subscribers by turning on the switches SA belonging to the subscribers concerned by placing them on any free row of connecting pawls and depressing them. The following circuits are created: i. Microphone circuit: positive pole of battery B ₁ , choke coils D ₁ , line 4, choke coil Z) ₃ , connecting line i ^x , latch springs VK ₁ , spring 1, switch arm SzI ₂ , subscriber latch TZi ₁ , spring 5, line 5, call button RT ₁ , springs 4, 5, line 5, subscriber line T ₁ , line 2, call button RT ₁ , springs 2, 3, line 3, subscriber handle TK ₁ , springs 2, i, holding relay ZZR ₁ to the negative pole of battery S ₁ . 2. Hearing circuit: Subscriber _{line T 1} , line 2, call button RT ₁ , springs 2, 3, line 3, subscriber handle TK ₁ , spring 2, switch arm SzI ₁ , connection handle VK ₁ , spring 2, connection line 2 ^X , connection set of subscriber T ₄ , Connection latch VK ₃ , spring 2, switch arm SzI ₃ , subscriber latch TK ₁ , spring 2, line 3, call button RT ₄ , springs 3, 2, line 2, subscriber line T ₄ , line 5, call button RT ₄ , springs 5, 4, line 5, subscriber latch TK ₄ , spring 5, switch arm SA ₄ , connecting latch VK ₃ , spring 1, connecting line i ^x , connecting set of subscriber T ₁ , connecting latch VK ₁ , spring 1, switch arm SA ₂ , subscriber latch TK ₁ , spring 5, line 5 , Call button RT ₁ , springs 4, 5, line 5, subscriber line T ₁ . 3. Control circuit for the row of connecting pawls: positive pole of battery B ₂ , occupancy indicator BA ₂ , connecting line 4 ^X , connecting pawl VK, springs 4, 3, connecting line 3 ^X , negative pole of battery S ₂ . 4. Holding circuit: This corresponds exactly to the microphone circuit mentioned last. The microphone and hold circuit for subscriber line T ₄ is analogous to that of subscriber line T ₁ . The holding relays ZZR ₁ and HR ₄ remain attracted for the duration of the call, thereby local circuits of the holding solenoid coils HS ₁ and HS ₄ from the battery S ₂ via lines 8, 9 and the switches Y ₁ , Y ₄ with their AiIkCrIIzI ₁₁ Zl _{4 held} as a result of the electromagnetic effect of the holding coils HS ₁ , HS ₄ . After the conversation is over, when the receiver is hung up, the microphone holding circuits are interrupted and the armature of the holding relay ZZi? let go. This interrupts the local circuits for the holding coils HS ₁ , HS ₄ , and the switches Y ₁ , Y ₂ are pulled out of the latches TK _11, VK ₁ and TK ₄ , VK ₄ by springs P ₁ , F _4. Pat τ claim: Circuit for a telephone connection cabinet, in which the connection between two subscriber stations is established at the connection cabinet and the connection is disconnected is effected by the subscriber stations, characterized in that in a circle around the latch springs of each subscriber line the pawl springs arranged in a number of connecting lines and each with the corresponding connecting pawl springs the other participants are permanently connected, but by the pawl springs of their own participant pawl when the circuit is idle are separated, while when a connection is established between two subscriber lines (T ₁ , TJ the springs (i, 2) of the corresponding subscriber jacks (TK ₁ , TK ₄ J via the springs (1, 2) of the associated connecting jacks (VK ₁ , VK ₃ ) on their connecting lines (i ^x , 2 ^X ) are switched in such a way that the microphone current flowing to each subscriber station (e.g. B ₁ , D ₁ , 4, Dz, i ^x , FZf ₁₁ i, SA ₂ , TK ₁ , 5 , RT ₁ , 4, 5, T ₁ , 2, RT ₁ , 2, 3, TK ₁ , 2, i, HR ₁ , B ₁ ) the set subscriber switches (Y ₁ , YJ of the connection cabinet in a known way for as long electromagnetically by holding relay (HR ₁ , HRJ holds in its working position until the microphone circuit is interrupted at the subscriber stations. For this purpose ι sheet of drawings.