DE174078C - - Google Patents

Description

IMPERIAL!

PATENT OFFICE.

PATENT LETTERING

■ - M 174078 CLASS 21 a. GROUP

ROBERT BINES in CHICAGO.

Patented in the German Empire on March 1, 1905.

The present invention relates to an induction coil, which is to be used in particular in telephone systems in order to transmit the speech sounds to the same to make long distances suitable. A long iron core is used for this, which in itself forms a mechanical whole, but of four, each with one primary and two secondary windings surrounding parts

ίο consists, their abutting ends are separated by non-magnetic material. However, the neighboring, Magnetic poles forming core ends free, so that the magnetic lines of force directly from go one core part to the other and thereby increase the magnetic flux can.

As can be seen from the drawing, there is a microphone A on each microphone unit,

a receiver B, an alarm clock C, a call switch D and a transformer or an induction coil E. In the exemplary embodiment, only the instruments and circuits of one station are illustrated, since they are identical in every respect on the second station.

The induction coil is equipped with an iron core, which is composed of the four individual parts E \ E ² , E ^B , E ^{1 in} such a way that two of these parts come to lie between the poles of the opposite core parts. The poles of the individual core parts are separated from each other in any way, e.g. B. by insulating pieces F, magnetically isolated.

The individual core parts of the induction coil carry wire coils, and each part is provided with a primary coil F ¹ , F ² , F ³ , F ⁴ and a secondary coil G ¹ , G ² , G ³ , G ⁴ . The latter are expediently divided into sections, one of which sits on each side of the primary coils. The secondary coils are grouped together and their circuits are arranged so that the secondary coils are connected in series when calling but in series when speaking. Here, the turns of the coils run in such a way that the adjacent poles of two core parts each have opposite polarity.

With the induction coil is a circuit changing device in connection, consisting of a rotatably mounted arm H with attached magnets H ¹ and H ² , which are set up so that they can be brought into the vicinity of the poles of one core part of the induction coil. The outer poles 4 ^he two magnets are the same in this case. Also recommends. ^{it is appropriate} to equip this device with an adjustable weight Η Ά laterally to the center, which brings a pole of the current changing device in the vicinity of a pole of the core of the induction coil. By adjusting this weight H ³ , the speed of the device changing the circuit, which is connected to the contacts H ^ ■ and / 7 ^e , H * and W , can be regulated.
. The signal push button D includes isolated projections C ⁶ and C and also one

Number of contacts D ¹ , D ² , -D ³ , etc., which can be changed in their position to each other so that the call circuit is established.

The receiver or receiver hook / influences a number of contact pieces P, P, P etc., the position of which changes as soon as the receiver is lifted from the hook, which is brought into the position shown by a spring. Furthermore, an insulating intermediate piece 7 ^{9 is} provided here.

To signal when calling a remote station, press the signal switch button D; this completes the circuit of the primary coils of the induction coil, which runs as follows: From the electrical power source J through line J ¹ , contact H ⁷ , line J ² , contacts D ¹ , C ⁴ , lines C ⁵ and J ³ to point J. ⁱ , then through the various primary coils connected in parallel; The current flows from J ⁴ through coil F ¹ and line J ⁵ to line J ⁶ , from J ⁴ through line J ⁷ and coil F ⁴ to line J ^a , and also through line J ⁷ and coil F ² via lines J ^s and J ⁵ to line J ^e and finally also through line J ⁷ and coil F ³ via lines J ⁸ and J ^s to line J ⁶ , from there through the latter to the. Contacts D ⁵ , D ⁶ via line J ⁷ , contact üf ⁵ and line J ⁸ back to battery J.

If a current runs through the primary coils, the individual iron cores are excited and the core part E ⁱ acts on the switching device. Since the latter has two identical poles, one is repelled and the other is attracted and the device itself is set so that the contacts H ⁵ and H ^{7 are} switched off and the circuit now runs via the contacts H ⁱ and H ^a . The circuit through the primary. Coil is now reversed and runs as follows: From battery J via line J ¹ , contact H ⁶ , line J ⁷ , contacts Z) ⁶ , D ⁵ , line J ⁶ , from there through the coils connected in parallel via line J ³ , line C ⁵ , contacts C ⁴ , D ⁷ , leads / ² , J ^{8 back} to the battery. The reverse circuit requires a pole change in the core part i? ^{4 of} the induction coil, whereby the switching device is brought back into the position shown.

This process is repeated continuously as long as the signal switch D is closed, and the alternating closing and opening of the current induces a second current in the secondary coils, which is sent out into the main line.

The secondary coils are divided into groups of two and these are connected in series, while the two groups are connected in parallel. Assuming the main line wire K , the signaling secondary circuit extends as follows:

From main line K via line K ¹ , handset hook /, contact / ⁸ , line K ?, contacts -D ³ , D ⁴ , line K ³ , secondary coils G ³ , G \ line K \ contacts S ₁ S ¹ , line K ⁵ , secondary coils G ¹ , G ² , line K ^e and K ⁷ after the main line K ^s . Such a running current sets the bell of the remote station into action. If, on the other hand, the call comes from a distant station, the ringing pushbutton D is in the position shown. The signaling current then comes from the main line K and goes over the hook I, line K ² , contacts D ² , D \ line L to the bell C and from here through line K ⁷ to the main line K ⁸ , without the secondary coils happen. When speaking, the signal push button is in the position shown, and the primary circuit flows through the following parts: From the power source J via line M to microphone A, from there via line M ¹ , contacts I ⁷ , P, lines M ² , / ³ according to point J ⁴ ; here the current will split and go through each of the parallel connected primary coils and then back to the battery ^{through line / 6} , contacts D ^B , D ⁶ , line J ⁷ , contact H ^h and line J ^B.

The variations in the circuits corresponding to the vibrations of the diaphragm of the microphone A, call a crosstalk current in the secondary coil produced which, as the handset is lifted off the hook (see drawing), is as follows: From the main line K to the handset ^hook; then through contact P to listener B, from here to point O, where the current divides; one part now goes through line X " ⁵ and the secondary coils G ¹ , G ² , then through lines K ⁶ and K ⁷ to the main line / <T ⁸ ; the other part goes through contacts P, / ⁴ , lines P and K ³ after the secondary coils G ³ , G ⁴ , then through line i £ ⁴ , contacts P, I ¹ to main line K ⁸ .

It should be noted here that the secondary Coils in groups of two are connected in series, while the groups themselves are connected in parallel. '

Claims (3)

Patent claims: i. Induction coil, in particular for telephone stations, characterized in that that its iron core consists of four with one primary and two secondary windings each surrounding parts (E ¹ to E *) , the abutting ends of which are separated by non-magnetic material (F) for the purpose of achieving a continuously mechanically but not magnetically coherent whole, whereby the adjacent core ends, which form magnetic poles due to the primary excitation, are exposed, to let go for the sake \ the magnetic lines of force directly from a core portion to another and thereby enhance Ihduktionswirkung. 2. Induction coil according to claim i, characterized in that the windings of the various iron core parts (E ¹ to E *) are arranged in such a way that the abutting ends of two core parts each have unequal poles. 3. The connection of the induction coil according to claim 1 with a switching device to the primary windings (F ¹ to F ^) of all four core parts (E ¹ to E ^) in parallel and the secondary windings (G ¹ to G *) while telephoning two in series and then connect them in parallel to each other and to be able to connect the secondary windings on all core parts in series when calling. 1 sheet of drawings.