DE209187C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

PATENT LETTERING

-Yes 209187-CLASS 201 GROUP

Test contact for electrical signal and turnout interlockings.

Patented in the German Empire on January 8, 1908.

If a failed contact occurs when an electrical circuit is closed any unintended influences subsequently become conductive while the switch has remained in the working position, so This delayed power supply can, under certain circumstances, cause an operational hazard will. The present invention now prevents the subsequent in this case The flow of an electric current is intended to prevent the from starting prematurely prevent spatially separated motors for electrically controlled turnouts from the control point.

The device consists of a break contact, which is connected to the armature of a Magnet is connected. Because the contact with the magnet is in the operating power line is connected in series and the operating circuit is interrupted when the armature has dropped out holds, the magnet can only be excited to hold the contact in the closed position when the armature has been moved into the attracted position when the main switch was flipped. In the end position of the With the main switch, however, the armature is free again and falls under the influence of a spring Interruption of the circuit from when the

. The circuit was not conductively closed, but in the closed position the Contact held by the magnet when the circuit is conductive. · Thereby a special device can be installed in the supply lines for each main switch in the signal box can be connected in parallel, or the levers can be used in groups on one device each and all levers also act on a communal institution.

In Figs. 1 and 2 there are two switch operating levers ι and 2 assumed that the device shown at 4 when folding influence by the common slide 3. The slide can also be operated by a rocker arm with detachable points of application for the cams of the levers to be replaced.

Connect the contact levers 5 and 6 connected to the operating levers 1 and 2 by means of lines 7 and 8 or 9 and 10, the clockwise and counterclockwise rotation with double Point motors 11 and 12 provided with windings with the battery 13. The cable connection for the monitoring magnets holding the operating current interrupted at 15 and 16 17 and 18 are omitted. It is assumed that the magnets provide the operating current close automatically as long as the lever and switch position do not match.

If the operating lever 2 is turned into the position of FIG. 2, it is already before the end position of contact 9 closed, contact 16 is already closed in a known manner, and the slide 3 is closed by the nose 21 on the lever 2, which has acted against the beveled projection 22 of contact 14 has been moved to the right. If now all. Contacts, including the break contact 14, are conductive, the operating current flows from 13 through 27, 14, 27, 28, 16, 6, 9, 12 and earth back to the battery. The magnet 27 is excited and stops the contact 14 by means of its armature 23 while overcoming the tensioned spring 24

closed, even if the lug 21 in the lug 22 upon completion of the lever movement which has left the position opposite to FIG. 1. So the engine runs up to Interruption of the line 28 by the magnet 18, after which the magnet 27, as in FIG Fig. I, becomes de-energized again.

However, in the situation in FIG. 2, the operating current cannot due to a line fault flow so that the magnet 27 remains de-energized, then falls in the end position of the operating lever 2, which is indicated by dashed lines in FIG. 2, the armature 23 by the tension of the spring 24 and interrupts the operating current at 14 as in FIG. 1.

Since due to the series connection of the contact 14 and the magnet 27 of the magnet cannot tighten its armature without moving the main switch, the interruption remains' exist at 14, even if the closed contact 16 and 6 (Fig. 2) Line fault is subsequently eliminated.

If at the beginning of the movement of the lever 1 or 2 the approaches 20 or 22 first lying lugs 25 or 26 move the slide 3 to close the contact 14, so if contact 15 or 16 is still interrupted, and the operating current cannot flow.

To the attendant the failure of the operating current after turning a control lever can be identified, the circuit of the bell, which is usually caused by the sloping hazard-indicating armature of the Monitoring magnet is closed, via one of the fallen armature 23 of the Test magnets 27 closed contact are performed. Then the bell can only then sound when both anchors have dropped - with a cut switch -, also in the event of the failure of the operating current after the changeover and very briefly during throwing a control lever.

Claims (1)

Patent claim: Test contact for electrical signal and turnout interlockings, characterized in that that one connected in series with an electromagnet (27) in the operating power line Break contact (14) is connected to the armature of this magnet and holds the circuit interrupted when the armature has fallen, so that the current only flow and the magnet can be excited when the main switch makes contact has closed while moving the armature to the tightened position, wherein the armature that has become free in the end position of the main switch is held by the magnet when the circuit is conductive, but drops to interrupt the circuit if the circuit is due to a line fault is not closed. 1 sheet of drawings.