DE457177C - Electric incandescent lamp with tungsten filament - Google Patents

Electric incandescent lamp with tungsten filament

Info

Publication number
DE457177C
DE457177C DEP54804D DEP0054804D DE457177C DE 457177 C DE457177 C DE 457177C DE P54804 D DEP54804 D DE P54804D DE P0054804 D DEP0054804 D DE P0054804D DE 457177 C DE457177 C DE 457177C
Authority
DE
Germany
Prior art keywords
holder
chrome
tungsten filament
tungsten
coating
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEP54804D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Application granted granted Critical
Publication of DE457177C publication Critical patent/DE457177C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/18Mountings or supports for the incandescent body
    • H01K1/20Mountings or supports for the incandescent body characterised by the material thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12389All metal or with adjacent metals having variation in thickness
    • Y10T428/12396Discontinuous surface component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12806Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826Group VIB metal-base component
    • Y10T428/12833Alternative to or next to each other
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12806Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826Group VIB metal-base component
    • Y10T428/12847Cr-base component

Landscapes

  • Resistance Heating (AREA)

Description

DEUTSCHES REICHGERMAN EMPIRE

AUSGEGEBEN AM 9. MÄRZ 1928ISSUED ON MARCH 9, 1928

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

KLASSE 21 f GRUPPECLASS 21 f GROUP

Elektrische Glühlampe mit Wolframleuchtkörper.Electric light bulb with tungsten filament.

Patentiert im Deutschen Reiche vom 9. März 1927 ab.Patented in the German Empire on March 9, 1927.

Es ist bereits vorgeschlagen worden, bei elektrischen Glühlampen mit Wolframleuchtkörpern die aus Molybdän oder Wolfram bestehenden Halter mit einem Chromüberzug zu versehen. Letzterer wirkt nämlich schon bei niedrigerer Temperatur als Molybdän oder Wolfram auf etwa in der Lampe anwesenden Wasserdampf zerlegend ein, so- daß dieser nicht oder nur in geringerem Maße den Leuchtkörper beeinflussen kann. Diese bekannten Chromüberzüge bedecken den ganzen Halter.It has already been proposed for electric incandescent lamps with tungsten filaments to provide the holder made of molybdenum or tungsten with a chrome coating. The latter works even at a lower temperature than molybdenum or tungsten on about those present in the lamp Decomposing water vapor, so that it does not or only to a lesser extent the Can affect luminous bodies. These well-known chrome coatings cover the whole Holder.

Erfindungsgemäß erstreckt sich dagegen dieser den Molybdän- oder Wolframhalter bedeckende Überzug nur bis in die Nähe der Halterungsstelle des Wolframleuchtkörpers, so daß also die dem letzteren benachbarten äußeren Enden der Halter bzw. die an diesen angebrachten Häkchen oder Ösen frei vom Chromüberzug sind. Durch diese Ausbildung des an sich bekannten Chromüberzuges wird erreicht, daß im Betriebe der Lampe keine die Lebensdauer der letzteren beeinträchtigende schädliche Legierungsbildung zwischen dem glühenden Wolframleuchtkörper und dem Chromüberzug der Halter eintreten kann. Da auch die nicht unmittelbar vom Leuchtkörper berührten bzw. diesem nicht unmittelbar benachbarten Teile der Halter im Betriebe der Lampe noch durch Wärmeleitung genügend heiß werden, so ist auch in diesem Falle die günstige Wirkung des Chromüberzuges auf etwa anwesenden Wasserdampf in der Lampe sichergestellt.According to the invention, however, this extends the molybdenum or tungsten holder covering Coating only up to the vicinity of the mounting point of the tungsten filament, so that the latter is adjacent outer ends of the holder or the hooks or eyelets attached to them free from Chrome plating are. This design of the known chrome coating it is achieved that, in the operation of the lamp, there is no impairment of the service life of the latter harmful alloy formation can occur between the glowing tungsten filament and the chrome coating of the holder can. Since also those not directly touched by the luminous element or this not immediately adjacent parts of the holder in the operation of the lamp nor through If heat conduction becomes sufficiently hot, this is also the beneficial effect in this case of the chrome coating on any water vapor present in the lamp.

Zwecks Herstellung der neuen Halter werden zweckmäßig gewöhnliche Halter aus Molybdän oder Wolfram vorerst in ihrer ganzen Länge mit einem Überzug aus Chrom, etwa durch elektrolytische Einwirkung, versehen. Diese Halter werden darauf in üblicher Weise in der Glasstütze des Traggestelles eingeschmolzen. Vor dem Festlegen des Wolframleuchtkörpers an den Haltern werden die in üblicher Weise mit Häkchen oder ösen versehenen äußeren Enden der Halter erfindungsgemäß vom Chromüberzug befreit, etwa dadurch, daß eine Gebläseflamme für einige Sekunden auf die äußeren, freizumachenden Enden der Halter gerichtet wird, bis der Chromüberzug dieser Halterstellen verdampft ist.For the purpose of producing the new holders, it is useful to use ordinary molybdenum holders or tungsten initially provided with a coating of chromium over its entire length, for example by electrolytic action. These holders are then melted in the usual way in the glass support of the support frame. Before the tungsten filament is fixed to the holders, they are ticked or loosened in the usual way provided outer ends of the holder according to the invention freed from the chrome coating, for example in that a fan flame for a few seconds on the outer, to be cleared Ends of the holder is straightened until the chrome coating of these holder points evaporates is.

Claims (2)

Patentansprüche:Patent claims: ι . Elektrische Glühlampe mit Wolframleuchtkörper, deren aus Molybdän oder Wolfram bestehende Halter einen Überzug aus Chrom aufweisen, dadurch gekennzeichnet, daß der Chromüberzug jeden Halter nur bis in die Nähe der Halterungsstelle des Wölframleuchtkörpers bedeckt, die Häkchen oder ösen der Halterungsstelle selbst aber frei läßt.ι. Electric light bulb with tungsten filament, whose holders made of molybdenum or tungsten have a coating of chrome, characterized in that, that the chrome plating of each holder only up to the vicinity of the mounting point of the tungsten filament covered, but leaves the hooks or loops of the mounting point free. 45? 17745? 177 2. Verfahren zur Herstellung der Halter nach Anspruch r, dadurch gekennzeichnet, daß die Halter vorerst in ihrer ganzen Länge mit einem Chromüberzug, etwa auf elektrolytischem Wege, versehen werden, und daß darauf, und zwar vor dem Pestlegen des Leuchtkörpers, die dem Leuchtkörper benachbarten äußeren Enden der Halter, also Häkchen oder ösen derselben, vom Chromüberzuge, etwa durch Einwirkung einer Gebläseflamme, befreit werden.2. A method for producing the holder according to claim r, characterized in that that the holder is initially provided with a chrome coating over its entire length, for example by electrolytic means and that on it, and that before the plague of the filament, which the Luminous body adjacent outer ends of the holder, that is, hooks or loops the same, freed from the chrome coating, for example by the action of a fan flame will.
DEP54804D 1926-05-14 1927-03-09 Electric incandescent lamp with tungsten filament Expired DE457177C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12442/26A GB275735A (en) 1926-05-14 1926-05-14 Improvements in electric incandescent lamps

Publications (1)

Publication Number Publication Date
DE457177C true DE457177C (en) 1928-03-09

Family

ID=10004668

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP54804D Expired DE457177C (en) 1926-05-14 1927-03-09 Electric incandescent lamp with tungsten filament

Country Status (4)

Country Link
US (1) US1733076A (en)
DE (1) DE457177C (en)
FR (1) FR631452A (en)
GB (1) GB275735A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529335A (en) * 1966-05-06 1970-09-22 Pinlites Inc Method of making a light bulb with a plurality of independently connected filaments for indicating graphic symbols

Also Published As

Publication number Publication date
GB275735A (en) 1927-08-15
US1733076A (en) 1929-10-22
FR631452A (en) 1927-12-21

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