AT151252B - Process for the production of electric incandescent lamps with multiple coiled tungsten filaments. - Google Patents
Process for the production of electric incandescent lamps with multiple coiled tungsten filaments.Info
- Publication number
- AT151252B AT151252B AT151252DA AT151252B AT 151252 B AT151252 B AT 151252B AT 151252D A AT151252D A AT 151252DA AT 151252 B AT151252 B AT 151252B
- Authority
- AT
- Austria
- Prior art keywords
- production
- incandescent lamps
- electric incandescent
- multiple coiled
- coiled tungsten
- Prior art date
Links
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von elektrischen Glühlampen mit mehrfach gewendeltem Wolfram- leuchtkörper.
EMI1.1
wendelleuchtkörper auftretende Nachteil wird erfindungsgemäss weitgehend vermieden, wenn der Leuchtkörper nach erfolgtem Aufbringen auf das Traggestell während des erstmaligen, durch Stromdurchfluss erfolgenden Erhitzen auf eine die Vorbehandlungstemperatur übersteigende Temperatur der Wirkung eines äusseren magnetischen, vorzugsweise elektromagnetischen Feldes unterworfen wird. Die dadurch auf den stromdurchflossenen Leuchtkörper ausgeübte elektromagnetische Kraftwirkung arbeitet dann der Schrumpfung entgegen. Zweckmässig wird der Leuchtkörper hiebei auf Betriebstemperatur oder darüber erhitzt.
Die Wirkung des elektromagnetischen Feldes kann in einfachster Weise mittels einer stromdurehflossenen Drahtspule erfolgen, die das in reduzierender oder indifferenter Gasatmosphäre befindliche Traggestell oder, wenn letzteres schon in das Lampengefäss eingeschmolzen ist, dieses umsehliesst.
Die Achse der Spule steht hiebei zweckmässig senkrecht zur Leuchtkörperebene. Die gegenseitige Richtung der die Drahtspule einerseits und den Leuchtkörper anderseits gleichzeitig durchfliessenden Ströme sowie die Stärke des elektromagnetischen Feldes müssen dabei so gewählt werden, dass auf den Leuchtkörper eine Anziehung ausgeübt wird, welche der Schrumpfung entgegenwirkt. Dies gilt sowohl bei der Anwendung von Gleichstrom als auch von Wechselstrom.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the manufacture of electric incandescent lamps with a multiple coiled tungsten lamp.
EMI1.1
The disadvantage that occurs is largely avoided according to the invention if the luminous element is subjected to the action of an external magnetic, preferably electromagnetic field, after it has been applied to the support frame during the initial heating to a temperature that exceeds the pretreatment temperature. The electromagnetic force effect exerted on the luminous body through which current flows then works against the shrinkage. The luminous element is expediently heated to operating temperature or above.
The effect of the electromagnetic field can take place in the simplest way by means of a current-carrying wire coil which surrounds the supporting frame, which is in a reducing or indifferent gas atmosphere, or, if the latter is already melted into the lamp vessel, this.
The axis of the coil is expediently perpendicular to the plane of the luminous element. The mutual direction of the currents flowing through the wire coil on the one hand and the luminous element on the other hand, as well as the strength of the electromagnetic field must be chosen so that an attraction is exerted on the luminous element, which counteracts the shrinkage. This applies to both the use of direct current and alternating current.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB151252X | 1936-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT151252B true AT151252B (en) | 1937-11-10 |
Family
ID=10053469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT151252D AT151252B (en) | 1936-03-06 | 1937-02-19 | Process for the production of electric incandescent lamps with multiple coiled tungsten filaments. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT151252B (en) |
-
1937
- 1937-02-19 AT AT151252D patent/AT151252B/en active
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