AT36892B - Filament made of tungsten and thoroxide for electric light bulbs. - Google Patents
Filament made of tungsten and thoroxide for electric light bulbs.Info
- Publication number
- AT36892B AT36892B AT36892DA AT36892B AT 36892 B AT36892 B AT 36892B AT 36892D A AT36892D A AT 36892DA AT 36892 B AT36892 B AT 36892B
- Authority
- AT
- Austria
- Prior art keywords
- thoroxide
- tungsten
- electric light
- light bulbs
- filament made
- Prior art date
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims description 3
- 229910052721 tungsten Inorganic materials 0.000 title claims description 3
- 239000010937 tungsten Substances 0.000 title claims description 3
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000722 Didymium Inorganic materials 0.000 description 1
- 241000224487 Didymium Species 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000005592 electrolytic dissociation Effects 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
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liegende Oxyd sich an der Stromleitung beteiligen. Es muss an dieser Stelle auch erwähnt werden, dass sich das in diesem Mengenverhältnisse zugesetzte reine Thoroxyd nicht wie ein Leiter II.-ter Klasse, sondern im wahrsten Sinne des Wortes wie ein Nichtleiter verhält.
Die in Sinne dieser Erfindung zusammengesetzten Glithfäden haben metallischen
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Umstandes, dass im Vakuum weder thermische noch elektrolytische Dissociation stattfindet, die höchsten Belastungen. Die Herstellung derartiger Glühfäden geschieht in bekannter Weise am besten derart, dass eine aus Wolfram, dem oben charakterisierten Thoroxyd und einem organischen Bindemittel bestehende plastische Masse zu Fäden geformt und karbonisirt wird, worauf die Kohle durch einen der bekannten Entkohlungsprocesse entfernt wird, z. B. dadurch, dass der karbonisierte Glühfaden in einer Atmosphäre von Wasserstoff bei Gegenwart von wenig Wasserdampf erhitzt wird.
Das verwendete Thoroxyd muss, wie erwähnt, absolut chemisch rein sein und darf weder Elemente der Gadolinium und Yttriumgruppe, noch der Didymgruppe enthalten, eine Eigenschaft, über die nur die Beobachtung des Luminiszenz-spektrnms, bezw. des Absorptions- spektrums Aufschluss erteilen kann.
Die Herstellung eines solchen Thoroxyds geschieht auf bekannte Weise, beispielsweise durch Anwendung der Reinigungsmethoden von Muthmann und Baur.
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lying oxide participate in the power line. It must also be mentioned at this point that the pure thoroxide added in this proportion does not behave like a second class conductor, but in the truest sense of the word like a non-conductor.
The glith threads assembled within the meaning of this invention have metallic ones
EMI2.2
The fact that neither thermal nor electrolytic dissociation takes place in a vacuum creates the highest loads. The production of such filaments is best done in a known manner such that a plastic mass consisting of tungsten, the thoroxide characterized above and an organic binder is formed into threads and carbonized, whereupon the carbon is removed by one of the known decarburization processes, e.g. B. in that the carbonized filament is heated in an atmosphere of hydrogen in the presence of a little water vapor.
The thoroxide used must, as mentioned, be absolutely chemically pure and must not contain elements of the gadolinium and yttrium group, nor of the didymium group, a property that can only be determined by observing the luminescence spectra. the absorption spectrum can provide information.
Such a thoroxide is produced in a known manner, for example by using the cleaning methods of Muthmann and Baur.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT36892T | 1907-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT36892B true AT36892B (en) | 1909-04-10 |
Family
ID=3554026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT36892D AT36892B (en) | 1907-05-11 | 1907-05-11 | Filament made of tungsten and thoroxide for electric light bulbs. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT36892B (en) |
-
1907
- 1907-05-11 AT AT36892D patent/AT36892B/en active
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