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Publication of AT37057BpublicationCriticalpatent/AT37057B/en
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Claims (1)
PATENTANSPRÜCHE : , 1-
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Vorwählern liegenden Wähler [Gruppen- bezw. Teilnehmerwähler 12] die durch einen Schaltelektromagneten (17) den betreffenden Wähler (12) einstellenden Stromstösse, welche in dem während der Nummernschaltperiode abwechselnd offenen und geschlossenen Leitungszweig (a) und gleichzeitig auch über ein an denselben angeschlossenes Anrufrelais (Ia) fliessend, dessen Anker bewegen, den vordem eingestellten und festgelegten Vorwähler (7) infolge der durch die Erdung des anderen LcitungMweiges (b) und die gleichzeitige Schliessung einer Stromquelle (2b) bewirkten Auirechterhaltung des Stromkreises über den Vorwählerelektromagneten (6) nicht beeinflussen.
PATENT CLAIMS:, 1-
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Pre-selectors lying voters [group resp. Subscriber selector 12] the current impulses setting the relevant selector (12) through a switching electromagnet (17), which move its armature in the branch (a) which is alternately open and closed during the number switching period and at the same time via a call relay (Ia) connected to it Do not influence the previously set and fixed preselector (7) due to the maintenance of the circuit via the selector electromagnet (6) caused by the earthing of the other line (b) and the simultaneous closure of a power source (2b).
2. Ausführungsform der Fernsprechanlage nach Anspruch 1, dadurch gekennzeichnet, dass besondere, jeder Teilnehmerleitung auf dem Amte zugeordnete Anrufrelais (P', lb), die beim Abnehmen des Fernhörers unter Strom gesetzt werden, durch Anziehen ihrer Anker dz 3b) unabhängig voneinander über Kontakte (4a. 4b) gleichartige Stromkreise schliessen, du-eh die
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2. Embodiment of the telephone system according to claim 1, characterized in that special call relays (P ', lb) assigned to each subscriber line on the office, which are energized when removing the receiver, by tightening their anchor dz 3b) independently of one another via contacts (4a. 4b) close similar circuits, you-eh die
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AT37057D1906-06-021908-05-23
Circuit arrangement for telephone self-connecting systems.
AT37057B
(en)
Arrangement for the connection apparatus of telephone exchanges with a device for repeated automatic selective calls from several subscribers connected to the same line.
Device for several subscriber stations connected to a common line, any one of which can be called with the exclusion of the rest by a certain number of current surges in a certain direction by means of a switching disk, the contacts of which are arranged offset on the individual extensions.
Circuit arrangement for telephone purposes for connecting main and secondary units to a line of a central battery office with automatic changeover switches.