DE547913C - Overhead signaling device - Google Patents

Description

GERMAN EMPIRE

ISSUED APRIL 6, 1932

REICH PATENT OFFICE

PATENT LETTERING

JKl 547913 CLASS 2Oi GROUP

V 24906 IIj20 i Date of publication of the patent grant: ΐγ. March

Crossing signaling device

Patented in the German Empire on February 7, 1929

The invention relates to an overhead signal device and aims to be as simple as possible Means to achieve the greatest possible security. This is done according to the invention achieved in that all belonging to the activation of the signaling device Lines and the signaling device itself are monitored by quiescent current, wherein the line used to switch on the signaling device by driving over the rail contact or the like. Is interrupted.

It is already known to switch off the signals by breaking a contact to cause, while according to the invention, the switching off by closing a contact he follows. It is also known to use quiescent current in overhead signal devices. The novelty of the invention is on the other hand, that the closed circuit for

so the track relay has a self-closing contact this relay is led so that the closed-circuit relay after it has dropped out in this Must remain in position until it is tightened again via another line.

The subject matter of the invention is explained in more detail in the figures.

Here, 1 is a track that is crossed by a crossing 2. Light signals 3 and 4, which are fed by a common line 5, are arranged in front of the crossing. The light signals 3 and 4 receive current through a resistor 6, which is dimensioned so that the signals do not light up, but the current is sufficient to keep the relays 7, 8 attracted so that the contacts 13, 14 in the line 9 to the feedback 10 remain closed. In the track, at a corresponding distance in front of the crossing, there are rail contacts or similarly acting devices 11, 12, through which the current to the relay 18 is interrupted or closed. In the direction of travel indicated by the arrow, the current in line 17 is interrupted by driving on contact 11, relay 18 drops out, interrupts self-closing contact 19, so that even after rail contact 11 is left again, relay 18 remains dropped. When the relay 18 drops out , the contact §0 is closed, which short-circuits the resistor 6, so that an increased current now flows in the line 5 to the signals. If the train reaches the rail contact 12, which is not designed as a current interruption, but as a current circuit contact, the current in line 21 is closed, whereby relay 18 receives power again and by tightening its armature closes the self-closing contact 19, so that now also after leaving the rail contact 12 relay 18 continues to

*) The patent seeker stated as the inventor:

Dr.-Ing. Hermann Arndt in Berlin.

remains drawn. Now the light signal receives current again only via the resistor 6. Instead of two relays 7 and 8 you can also use one relay in the common Return of signals 3 and 4 is arranged. You can also use contacts 13 and 14 instead of relays 7 and 8 also use transformers, with the primary windings in the signal lines that Secondary windings are arranged in the feedback line 9.

A further improvement can be achieved by, as shown in Fig. 2 (The light signaling device itself is not shown), except for the first Rail contact 11, which works as a break contact, so normally closed is still used a normally open contact 15, which is in a line 16 over which when the contact 15 is closed, the relay 18 is short-circuited. Through the Quiescent current circuit with the interruption contact 11 according to Fig. 1 achieves namely, that in the event of a line break the light signal »5 lights up. For the How the device itself works, however, is a break contact cheap as a work contact. So if you have a working contact in addition to contact 11 15 which short-circuits the relay 18, greater security is obtained for the effectiveness of the signaling device. If you would only use the short-circuit line 16, again there would be no security in the event of a line break in line 16 given. So you get absolute security by using two contacts of various kinds. The same can be applied to the contact 12 accordingly. Quiescent current monitoring is not required here, but you can add the further working contact 22 achieve greater security for the operation of the device. Fig. 3 shows the setup for a single track line running in both directions is driven on, again providing for a doubling of the contacts. The light signal device remains exactly as in Fig. Ι shown. Except for the switch-on contacts 11 and 15 and the switch-off contacts 12 and 22 for one direction of travel are the switch-on contacts 23 and 24 and the Switch-off contacts 25 and 26 are provided for the other direction of travel, which in the corresponding Way are connected to the relay 18. Instead of the usual rail contacts you can also use all other facilities that are likely to have an influence to bring about between the train and the route, e.g. B. Sliding contacts on electric railways with catenary, inductive contacts, optical interference and the like.

Claims (4)

Patent claims: 1. Override signaling device in which the signal circuit from a closed-circuit relay monitored and the line used to switch on the signaling device by driving over a rail contact O. The like. Is interrupted, characterized in that the closed circuit of the signal switching relay (18) over a self-interrupting contact (19) is performed on the relay (18), which attracts of the relay (18) even after the rail contact (11) is closed again long prevented until the circuit of the relay (18) after the Train is closed again on the crossing by a working contact (12, 22). 2. Device according to claim 1, characterized characterized in that the quiescent current feedback line leading to a monitoring point (10) (9) through contacts (13, 14) to relays (7, 8), which are in the over the line carrying the light signals (3, 4) is interrupted. 3. Device according to claim 2, characterized in that when there is a free crossing of the light signals (3, 4) flowing current is weakened, the feedback relay (7, 8) lying in series with the signal (3, 4) even when weakened Current remains attracted. 4. Device according to claim 2 or 3, characterized in that in place of the Feedback relays (7, 8) with their contacts (13, 14) transformers are used their primary windings in the signal lines and their secondary windings lie in the feedback line. 1 sheet of drawings