DE174786C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- JVl 174786.-CLASS 21 a. GROUP

ROBERT BINES in CHICAGO (V. St. A.).

Induction coil for telephone use. Patented in the German Empire on March 1, 1905.

The present invention relates to an induction coil for telephone equipment with long wire lines, which is characterized by the fact that except for one with pole pieces provided iron core between the ends of these shoes and magnetically isolated from them, a second iron core for use arrives, which interrupts and distracts the lines of force of the former. Both cores • ίο are each with a primary and a secondary Coil provided, both the primary coils and the two secondary are connected in parallel to each other. The windings of each of the two secondary ones Coils consist of two parts, one on either side of the one sitting in the middle of the core primary winding are arranged so that the aforementioned interruption of the lines of force in the secondary circuit in which the receiver is connected, an amplified Effect of force has the consequence to the coil

to give the ability to transmit speech sounds over ■ greater distances.

A known type of encoder is switched into the primary circuit while a pole changer sits opposite the poles of the induction coil, with the help of which the call is made the remote station.

Fig. Ι shows a schematic representation of the circuits and facilities for a Telephone station,

2 shows a view of the induction coil with the windings in a schematic representation and

FIG. 3 is a side view of FIG. 2.

In Fig. Ι the various parts and circuits of only one terminal of the Line shown because they are exactly repeated at the remote station.

The induction coil of FIG. 1 is shown in FIG. 2 on an enlarged scale. It is provided with two iron cores A, B , of which iron core A carries two magnetically conductively connected pole pieces A ^l , between which the iron core B is, which is magnetically isolated from the pole pieces A ¹ and iron core A, e.g. B. by insulating pieces B ¹ , which advantageously form a kind of cap over the ends of the iron core.

The pole shoes are expediently equipped with corresponding depressions, and the iron cores assume the position illustrated in FIG. 3. Each iron core is divided into several sections, and one of them contains the primary coils A ² , B ² connected in parallel and connected to the battery D.

On both sides of these sections there are further sections for the secondary coils A ^s , B ^s , which are connected in parallel and connected to the line line. The pole shoes A ¹ are firmly connected to one another in any desired manner, for example by means of bolts C. With the induction coil. a current switching device is connected for signaling. This consists of a magnet which is arranged in such a way that the outer ends have the same polarity, for example north magnetism (Fig. 1).

This is achieved in that, contrary to previously known self-interrupters, two permanent magnets are attached to a rotatable lever E in such a way that their outer ends have the same poles. The pivot of this lever E ¹ is mounted on the frame of the induction coil and consists of non-magnetic material or is magnetically isolated from it. A return spring P is attached to the connector E. One north pole N is opposite the south pole S of one pole piece .4 ', while the other north pole is opposite the north pole N of the other pole piece A ¹ . Therefore, both poles tend to move the movable arm E in the same direction, namely the opposite north and south poles by attraction and the opposite two north poles by repulsion.

Contact spring pieces E ² , E ^{z are} connected to the movable arm E and work together with the contacts /? *, / T ⁵ , E ⁿ , E ^7. The two contacts E ⁵ , E ⁶ are connected to the local circuit of the battery D by means of line E ⁸ . The two contacts E ⁴ ", E ¹ are connected to one another and simultaneously with the local circuit by line E. ⁹ A line F branches off from the contact piece E ² and a line F ^a 'of the contact piece E. ³ A switch button F ⁶ controls an Series of contacts F ¹ , F ² , G ¹ , G ² , G ³ , which are connected with spring pieces, and also the circuit through the bell G ^5. The receiver or receiver L is usually attached to the receiver hook / which is attached to the secondary line H ^{1 is connected to} the main line and also influences a series of contacts J ' ² , L' ² , P, / *, P, P. When the receiver is lifted, the microphone D ^{1 is moved upwards by the spring below} The receiver hook J is drawn in the position it assumes when the receiver is attached.

If a call is now made from the remote station, the current first flows through the signaling device, here bell G ⁵ , by connecting from line / ifdürch line G ^e , bell G ⁵ , line G ⁴ , contacts G ³ , G ² , line J ³ , Hook J after the secondary line H ^{1 of} the main line and then goes back to the feed station.

If, on the other hand, the remote station is to be called, the signaling button F ^{5 is} pressed, which lies against the insulating piece J ⁱ , whereby on the one hand the two contact ^{pieces G 2} and G ^{8 are} separated and the bell G ^{5 is} switched off, on the other hand connection between contacts G ² and G ¹ respectively. F ¹ and F ' ^{2 is} produced. This creates a circuit going through battery D and the primary coils, namely this runs from D through lines / ² and E ⁸ , contact E '', contact spring piece E ~, line F, contacts F ¹ and F ² , line F ^s , Primary coils A ² , -B ² (Fig. 2), lines Z ⁷⁴ and F °, contact spring piece E ^s , contact E ¹ , lines / T ⁹ and Z ¹ back to the battery. A current now runs through the primary coils and induces a second current in the secondary coils, which goes through the trunk line to the signaling device of the remote station and here, from the secondary coils through line G, contact G ¹ , G ² , line J ^3,. Hook J, branch line H ^{1 flows} from there to the remote station and back through line H to the secondary coils.

The current sent through the primary coils excites the pole shoes A ¹ and the magnets on the pivoted lever are moved against the tension of the spring by attraction of the left and repulsion of the right.

Here, the contact pieces E ² and E ³ cause an interruption of the circuit, which then occurs when the contacts /? ⁵ and FP is closed again. The current now flows from battery D through P, E ^s , E ⁵ , E ^B , F ^r> , jF ⁴ , then through the primary coils (Fig. 2) F ³ , F ² , F ¹ , F, E ² , E ⁷ , E ⁹ and / 'after the battery back. The current through the primary coils is now reversed and the polarity of the pole shoes A is also changed, which also causes the aforementioned magnets to be returned to the position shown. This activity will be repeated as long as the signaling pushbutton is pressed, and each time the current of the battery D is closed and interrupted, a current surge is sent into the main line.

If you want to speak, the signaling pushbutton F ^h is released again; since it is seated on a spring, it will return to the position shown in FIG. 1 and cause the contacts F ¹ and F ' ² and G ¹ , G "to be released and the contacts G ² and G ^{3 to be connected} . ■ If the receiver is now removed from hook J , whereby the latter is moved upwards by spring force, the two contacts J * and P are spread apart by pressing button J ¹ , with / ⁴ against / ⁸ and / ⁶ against / ^s The hook J is also lifted from J ² and lies against the contact piece L ^2. The microphone D ¹ is now in the same circuit with the primary coil and battery D. If the caller speaks into the apparatus D ¹ , -

the current in this circuit will change in the known way, where the latter runs as follows:

From battery D through lines P, I, speech set D ¹ , line / ⁹ , contacts 7 ⁸ , P, lines P, F ^, from there through the primary coils A ² , B ² (Fig. 2), further through lines F ³ , P, contacts / ⁴ , / ³ and wire / ² back to battery D. The change in the current in the primary coils creates a speech current in the secondary coils, the circuit of which is as follows.

From the secondary coils A ³ , B ³ (Fig. 2) through line G, listener L, line L ¹ , contact L ² , hook /, secondary line H ¹ to the instrument of the other station, then back through secondary line H to the coils ^ L ³ , B ³ . The recipient of the other end station then takes action and reproduces the message accurately.

Claims (3)

Godfather sayings: i. Induction coil for telephone purposes with two windings, the primary of which is to be connected in series with the microphone and a battery, while the secondary is connected in series with the remote receiver and the line cable, characterized by an iron core (A) with pole pieces (A ¹ , A ¹ J, between which a second iron core (B) is arranged magnetically insulated to interrupt and deflect the lines of force of the former (A) , both iron cores (A, B) being surrounded by a primary and a secondary coil, for the purpose of the interruption of the magnetic lines of force in the secondary circuit to achieve an increased force suitable for the transmission of sound over very long distances. 2. Embodiment of the induction coil according to claim 1, characterized in that on each of the two iron cores (A, B) the windings (A ² , B ² ) of the primary coil in the middle and those (A ³ , B ³ ) of the secondary coil arranged in two groups on both sides of the former and the coils BEZW. Coil groups of both iron cores are connected in parallel here. 3. The formation of the induction coil according to claim 1 for evocation. of induction currents in the secondary circuit resulting from self-interruption in the primary circuit, which are used to call the remote telephone station, characterized in that opposite the pole pieces (A ¹ , A ¹ ) of the induction coil there is arranged an oscillating magnet which has two contact pieces (E ² , E ³ ) , which interact with four fixed contacts (E *, E ^h , E ^e \ E ⁷ ) when the magnet swings back and forth in the sense of self-interruption. 1 sheet of drawings.