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IBM Deutschland Internationale Bueromaschinen GmbH
Original Assignee
IBM Deutschland Internationale Bueromaschinen GmbH
Publication date
Application grantedgrantedCritical
Publication of DE892080CpublicationCriticalpatent/DE892080C/en
PATENTANSPRÜCHE:PATENT CLAIMS:. i. Einrichtung zur Verhinderung falscher Polung von elektrischen Büromaschinen, vorzugsweise
von Lochkartenmaschinen, beim Anschluß an das Gleichstromnetz, gekennzeichnet
durch ein stromrichtungsabhängiges Schaltelement (beispielsweise Trockengleichrichter G),
das die Inbetriebsetzung der Maschine bei falscher Poking selbsttätig unterbindet.. i. Device to prevent incorrect polarity of electrical office machines, preferably
marked by punch card machines when connected to the direct current network
by a current direction-dependent switching element (e.g. dry rectifier G),
which automatically prevents the machine from being started up in the event of incorrect poking.2. Einrichtung nach Anspruch i,. dadurch gekennzeichnet,
daß im Stromkreis des stromrichtungsabhängigen Elements (G) die an sich
bekannte elektromagnetische Auslösevorrichtung (A) des Hauptschalters (S) angeordnet ist, die
bei falscher Polung der Maschine den Schalter beim Einschalten sofort wieder auslöst.2. Device according to claim i ,. characterized in that the known electromagnetic tripping device (A) of the main switch (S) is arranged in the circuit of the direction-dependent element (G), which immediately triggers the switch when the machine is switched on if the polarity of the machine is incorrect.3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß das stromrichtungsabhängige Element'(G) im Stromkreis eines Schaltschützes
(R) liegt und dessen Erregung (mittels Schalters T) und damit das Einschalten des Antriebsmotors (M) der Maschine nur bei richtiger
Polung zuläßt.3. Device according to claim 1, characterized in that the direction-dependent element '(G) is in the circuit of a contactor (R) and its excitation (by means of switch T) and thus the switching on of the drive motor (M) of the machine only allows with correct polarity .4. Einrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß mit dem stromrichtungsabhängigen
Element (G) ein Anzeigeelement4. Device according to claims 1 to 3, characterized in that with the current direction-dependent
Element (G) a display element(z. B. Lampe L) zusammengeschaltet ist, das bei richtiger Polung der Maschine deren Betriebsbereitschaft
erkennen läßt.(e.g. lamp L) is interconnected, that if the polarity of the machine is correct, its operational readiness
reveals.
DENDAT892080D
Device to prevent wrong polarity of office machines when connected to the direct current network
ExpiredDE892080C
(en)
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