AT43912B -
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.
- Google Patents
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.
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Publication number
AT43912B
AT43912BAT43912DAAT43912BAT 43912 BAT43912 BAT 43912BAT 43912D AAT43912D AAT 43912DAAT 43912 BAT43912 BAT 43912B
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Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT43912BpublicationCriticalpatent/AT43912B/en
Sub-Exchange Stations And Push- Button Telephones
(AREA)
Description
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Claims (1)
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Signalapparaten (G2) an der Hauptstelle (II) geschlossen hält, während er beim Unterbrechen des Stromes an der mit dem Amte verbundenen Sprechstelle (N) eine vorübergehende Abschaltung dieser Abzweigungen bewirkt, damit nicht etwa bei Gesprächsschluss ein Zweigstrom über eine
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freien Gruppenwähler verbunden wird, dadurch gekennzeichnet, dass die gleichzeitige Erregung des Differentialrelais (D) an der Hauptstelle (H) sowie eines in bekannter Weise mit je einer Wicklung (rl r2) in jeden Leitungszweig (ci, b) geschalteten Differentialelektromagneten (R) im Amte erst beim Einstellen des Nummernschalters durch Erdung der Leitung (a) an der mit der Amtsleitung (a, b) verbundenen Sprechstelle (N1) erfolgt, zu dem Zwecke,
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Keeps signaling devices (G2) at the main station (II) closed, while when the current is interrupted at the intercom station (N) connected to the office, it causes these branches to be temporarily switched off, so that a branch current does not pass through a branch at the end of the call
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free group selector is connected, characterized in that the simultaneous excitation of the differential relay (D) at the main unit (H) and a differential electromagnet (R) connected in a known manner with one winding (rl r2) in each branch (ci, b) in the The exchange takes place only when the number switch is set by earthing the line (a) at the intercom (N1) connected to the exchange line (a, b), for the purpose
die Zeit der Sperrung der Leitung für die übrigen Nebenstellen (N2) bezw. des Gruppenwählers im Amte für andere Leitungen abzukürzen.
the time of the blocking of the line for the other extensions (N2) respectively. of the group selector in the office for other lines.
4. Anordnung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das Schlusszeichen-
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zur Amtsleitung (a, b) in Reihe mit dem Schlusszeichen (S) einen Selbstunterbrecherwecker (TV) einschaltet, der durch die wiederholten Unterbrechungen der Leitung die Rückkehr der Wähler des Amtes in die Ruhelage sichert.
4. Arrangement according to claim 1 and 2, characterized in that the final character
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to the exchange line (a, b) in series with the final character (S) switches on a self-interrupting alarm clock (TV), which ensures the return of the voters of the office to the rest position through the repeated interruptions of the line.
AT43912D1908-12-231909-11-12
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.
AT43912B
(en)
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.