SU4859A1 - A device for wiring from an intermediate station when using the Picard system - Google Patents

Description

FIG. 1, 2 depict explanatory diagrams; FIG. 3 is a schematic diagram of the proposed device and in FIG. 4-pin plug with the following designations: Morse 8-telegraph unit, 9-inductor telephone, 10 Picard coil, 11-capacitor, 12-modified telegraph unit.

When making telephone communications according to Picard's scheme, intermediate telegraph devices are a big hindrance, which do not allow telegraph wires to be used more widely for telephony, since it is necessary to install two Picard coils in a place or station where a telegraph device is installed, which complicates setup and eases both conversation and calls.

For example, having two wires on a section with three stations A, B, C, one of which is direct and the other with an intermediate telegraph unit at station B, it is necessary to receive a telephone connection in addition to the telegraph one, and the telegraph connection All three stations will be provided. In view of the fact that at the intermediate station there is a telegraph apparatus in the wire, it is necessary to create a connection with the Picard coils. In this case, instead of a number plate with a telephone, a switch with a call to two directions can be set for the telephone, or even a separate telephone (Fig. 1). The telephone current, the passage from one end station to another, will be very weakened, since for passing it there will be no metal direct connection at the intermediate station B, at which the metal connection of the circuit is closed, and the telephone current entering station. C, will be the result of the work of two Picard coils art. B, i.e. transformed. Transformation, or the return of current through each coil, will be with some loss through the two coils Art. In about 20%. In order to avoid the loss of telephone current on the transformation, it is necessary to refuse to install the coils. Pika.ra at intermediate stations. FIG. Figure 3 shows a diagram of the proposed device for wiring from an intermediate station using the Picard system. The switching circuit of the apparatus will then have the form shown in FIG. 2

The proposed device uses a telegraph device to be included in the Picard circuit at an intermediate station, which represents a change in the normal Morse telegraph device. The device’s switchboard, which also serves as a lightning rod, has seven plates (1, 2, 3, 4, 5, 6 and 7); plates 2 and 5 are used to connect the linear wires a, a, b, b of the picard's circuit from the side of st. A, and plates 3 and 6 for the connection of the line wires from st. WITH; plates 1, 4 and 7 are used for lightning conductor (grounding) and for testing both wires and apparatus through a plug w. The plug switch is also provided with plates M, M, C, C, which are assigned to turn on the current source (batteries of the same voltage, one parallel to the other, if required) into the circuit of each of the two electromagnet windings E. Each winding of the electromagnet is connected, on the one hand , through one of the two windings, the galvanoscope G and through one plate of the plug-in switch to the line wire, and to it, from one end station. On the other hand, each electromagnet winding is connected, through one of two mutually isolated locking plates / 7, / 7 of a Morse key, and through one plate of the same plug switch to the line wire, which goes from the other end station and is connected to the first linear wire through through capacitor

On the lever of the transmitter (key), two ebony plates are fixed, on which, in turn, copper plates with two contact adjustable screws are mounted, which connect the main lamellae of the key while the front part of the key lever is lowered downwards. When the key lever is raised by the key, both the left contact lamellae and the right connections between them do not have (key K is open).

Through the switch it is possible to perform all the necessary manipulations, having a two-fork plug and (Fig. 4) with the device, which can be used as follows:

1) for direct feeding - the plug is installed in slots 2 and 5;

2) for grounding st. A-plug is installed in slots 1 and 4;

3) for grounding st. The b-plug is installed in slots 3 and b;

4) for the opened circuit and Morse work, the upper wire to socket 2 should be supplied with a plug, and for. With the lower wire, the plug is installed in slot 5.

The subject of the patent.

1. A device for wiring from an intermediate station using a Picard system, characterized by the supply of an electromagnet installed at an intermediate station of a telegraph apparatus with two windings, of which each is connected, on the one hand, through one of the two windings of the galvanoscope G and through one plate of the plug switch to the linear the wire coming from one terminal Station, and, on the other hand, through one of two isolated from each other locking plates / 7, / 7 key of Morse type and through one layer In the same plug-in switch to the line wire from the other end station and connected to the first line wire through a capacitor c.

2. Modification of the device described in claim 1, characterized in that the plates 2, 3, 5, 6 of the plug-in switch, to which the linear wires a, flj b, bi are connected, are located next to the grounded plates 1, 4, 7 designated by for testing and grounding the desired wire or apparatus through the plug w.

3. When characterized in clauses. 1 and 2 to the device, the supply of the plug-in switch with plates Ж, Ж, Z /, Ц, assigned to connect the current source to the circuit of each of the two windings of the electromagnet E.

FIG. R