SU2756A1 - Device for maintaining synchronism of two rotating mechanisms distant from each other - Google Patents

Description

FIG. 1 shows a device for maintaining synchronism by means of corrections in the course established at one turn of the contact arm; in fig. 2 is the same device in which a correction is introduced twice for each revolution of the contact arm and in FIG. 3 is a diagram of the application of the proposed device to single-wire direct-printing printing telegraph devices syst. Hughes

FIG. 1 is shown on the left of the departure and on the right of the receiving station. During the operation of the stations, the contact levers / and / are in rotation with the same angular velocity by the electric motors L / and D / from the sources of electrical energy Q and Qi. Let us assume that with some long operation of the apparatuses, the x-stroke arm of the sending station P with respect to the shoulder PI of the receiving station at a certain minimum angle (in the drawing, for clarity, the difference in the position of the shoulders is shown as maximum). Then for the moment

the current from the battery Q-., coming from the sending station from the contact segment (/ through the shoulder / to the half-segment 2j and then through the winding of the relay R to points / and from iv to the air wire L, from which from point c, go to the receiving station where, mine the relay coil RI, goes to the contact half-segment ..., from where through the contact arm P, and segment D., returns through the ground to the opposite pole of the battery Q ...

As a result of the established circuit, the current will activate only the relay of the sending station and the measles of the latter at the point O will short-circuit the wires (I, b, connected to the dynamo or alternator G). And since this dynamo is paired and driven by the same electric motor, it is clear that the closure between the wires and h will create a better braking to the motor M, and therefore to the contact arm P, so that the difference in the coal position between the contact shoulders (shear angle) the sending and receiving stations will decrease with each subsequent turn of these carts until a complete match occurs.

In this case, for the purpose of adjusting the braking force, an alternating alternating resistance can be sequentially inserted into the dynamo wire circuit, and for the purpose of preventing the extra currents generated when the relay L opens, a capacitor of the corresponding capacitance can be introduced between the conductors, or b Sparks can be produced by a permanent magnet deflecting this arc.

If we assume that the lead in the course will be at the receiving station and, consequently, at the moment when the shoulder / is at the half segment, and shoulder P at the half segment Z, then it is clear that only the receiving station relay on which the whole braking process is repeated.

With the full coincidence of the rotation of the contact shoulders of the sender and the receiving station, every time these shoulders pass along half-segments, the relay coils, though, will be energized, but will not operate their Koreas, due to the double resistance formed in this case by a sequence of current paths mentioned windings.

Thus, according to the instrumented scheme of operation of the instruments, the IB stroke correction or equalization is achieved by braking.

In the described device, the correction in the course follows for each revolution of the contact arm once: FIG. 2-a gives us a scheme in which this correction can be made twice for each revolution of the contact arm. In this drawing, the action of the relay provides for the just mentioned variant of switching off the motor circuit when anticipating during one or the other contact arm.

The proposed circuit in FIG. The third gives one of the particular applications of the proposed synchronization device for single-wire direct-printing telegraph systems syst. Hughes

From this scheme it is also seen that the use of the proposed device does not require the wiring of an additional overhead line.

SUBJECT PLT T i; Nt l.

1. A device for maintaining synchronism between two rotating machines that are remote from each other, in particular, for Uzeh-type telegraph devices, characterized in that the motor of each of the rotating mechanisms is connected with a common shaft to an electrical machine that acts as a brake, whose rotor winding on the one hand, it is connected to the terminal L of the electromagnet R, and on the other hand, to the fixed contact O, located opposite to the contact 3 cor, in order to control the closure of these contacts on the motor shaft of each of the rotating m Mechanisms fortified contact arm P with two brushes that at a certain moment establish a conductive connection between the fixed plate D connected to the battery Q and one of the two fixed plates ZZ, of which the plate Z is directly attached to the linear wire and the other is connected to him through the winding of the electromagnet R.

2. Use of the capacitor K device, described in paragraph 1, connected to the rotor winding of an electric machine in parallel with the core ./V and contact O, in order to avoid the formation of sparks between the latter.

Tpo-Lithograph “Red Printer, Lenipgrid, International, Y5. .

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