AT39745B - Safety circuit for electrical monitoring devices of railways or the like. - Google Patents

Safety circuit for electrical monitoring devices of railways or the like.

Info

Publication number
AT39745B
AT39745B AT39745DA AT39745B AT 39745 B AT39745 B AT 39745B AT 39745D A AT39745D A AT 39745DA AT 39745 B AT39745 B AT 39745B
Authority
AT
Austria
Prior art keywords
safety circuit
railways
monitoring devices
electrical monitoring
moved
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Priority to AT39745D priority Critical patent/AT39745B/en
Application granted granted Critical
Publication of AT39745B publication Critical patent/AT39745B/en

Links

Landscapes

  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Locating Faults (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Description

  

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  Sicherheitsschaltung für elektrische Überwachungseinrichtungen von   Eisenbahnwelchen   oder dgl. 
 EMI1.1 
 

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   Eine noch grössere Sicherheit gewährt eine Anordnung, bei der die   Fläche der Erdunga-   kontakte unter Druck aufeinander reiben müssen, um den Schluss der Überwachungskontakte und damit auch   denÜberwachungaatrom   zustande zu bringen. Sie gibt die unbedingte Gewissheit, dass 
 EMI2.1 
 zweiarmigen Hebel 33 befestigt, den eine Mittelstellvorrichtung 35 in die wagerechte Mittellage zurückzuziehen sucht. Dieser Hebel ist durch den Kontakthebel   22   unter Überwindung der Rückstellkraft in eine schräge Lage gedreht, in der die Feder 13 den Überwachungsstrom schliesst, indem sie gegen das Kontaktstück 15 gedrückt und in dieser Lage festgehalten wird.

   Es ist also die Reibung der den Erdschluss herstellenden Flächen von 22 und   14   und ihr dauernder Druck 
 EMI2.2 
 stromkreis geschlossen ist. 



   Die beschriebenen Einrichtungen sind natürlich nicht nur für elektrische Stellwerke, sondern überall dort anzuwenden, wo die Erdung einer Leitung oder überhaupt ein Kontaktschluss überwacht werden muss, dessen Fehlen sich im gewöhnlichen Betriebe nicht bemerkbar macht. 



   PATENT-ANSPRÜCHE : 
1. Sicherheitsschaltung für elektrische Überwachungseinrichtungen nach Patent Nr. 28340, bei der die zu überwachende Vorrichtung durch Erdung   betriebsunfähig   gemacht wird, dadurch gekennzeichnet, dass durch die von dieser Vorrichtung bewegten Schalter zugleich die Erdkontakte überprüft werden.



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  Safety circuit for electrical monitoring devices of railways or the like.
 EMI1.1
 

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   An arrangement in which the surface of the grounding contacts must rub against one another under pressure in order to bring about the closure of the monitoring contacts and thus also the monitoring of the circuit provides even greater security. It gives you the absolute certainty that
 EMI2.1
 two-armed lever 33 attached, which seeks to retract a center adjusting device 35 into the horizontal central position. This lever is rotated by the contact lever 22, overcoming the restoring force, into an inclined position in which the spring 13 closes the monitoring current by being pressed against the contact piece 15 and held in this position.

   So it is the friction of the earth faulting surfaces of 22 and 14 and their constant pressure
 EMI2.2
 circuit is closed.



   The devices described are of course not only applicable for electrical interlockings, but wherever the earthing of a line or a contact closure at all has to be monitored, the absence of which is not noticeable in normal operations.



   PATENT CLAIMS:
1. Safety circuit for electrical monitoring devices according to Patent No. 28340, in which the device to be monitored is rendered inoperable by grounding, characterized in that the earth contacts are checked at the same time by the switches moved by this device.

 

Claims (1)

2. Sicherheitsschaltung nach Anspruch 1, dadurch gekennzeichnet, dass die Schalter aus je zwei fest mit einander verbundenen, aber von einander isolierten Teilen bestehen, von denen der isolierte und der geerdete Teil abwechselnd an dasselbe mit der Überwachungsleitung verbundene feste Kontaktstück angelegt werden. 2. Safety circuit according to claim 1, characterized in that the switches each consist of two firmly connected but isolated parts, of which the isolated and the grounded part are alternately applied to the same fixed contact piece connected to the monitoring line. 3. Sicherheitsschaltung nach Anspruch l, dadurch gekennzeichnet, dass die die Erdung bewirkenden Kontaktflächen bei der Bewegung der Schalter in der einen Richtung in bekannter Weise blank gerieben und der metallisch reine Zustand dieser Flächen bei der Bewegung der Schalter in die andere Stellung durch Zustandekommen des Oberwachungsstromes überprüft wird. 3. Safety circuit according to claim l, characterized in that the grounding effecting contact surfaces rubbed blank when the switch is moved in one direction in a known manner and the metallically pure state of these surfaces when the switch is moved into the other position by the occurrence of the monitoring current is checked.
AT39745D 1906-05-18 1908-07-07 Safety circuit for electrical monitoring devices of railways or the like. AT39745B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT39745D AT39745B (en) 1906-05-18 1908-07-07 Safety circuit for electrical monitoring devices of railways or the like.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT28340T 1906-05-18
AT39745D AT39745B (en) 1906-05-18 1908-07-07 Safety circuit for electrical monitoring devices of railways or the like.

Publications (1)

Publication Number Publication Date
AT39745B true AT39745B (en) 1909-11-25

Family

ID=25599145

Family Applications (1)

Application Number Title Priority Date Filing Date
AT39745D AT39745B (en) 1906-05-18 1908-07-07 Safety circuit for electrical monitoring devices of railways or the like.

Country Status (1)

Country Link
AT (1) AT39745B (en)

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