US1806410A - Electric incandescent body - Google Patents
Electric incandescent body Download PDFInfo
- Publication number
- US1806410A US1806410A US346766A US34676629A US1806410A US 1806410 A US1806410 A US 1806410A US 346766 A US346766 A US 346766A US 34676629 A US34676629 A US 34676629A US 1806410 A US1806410 A US 1806410A
- Authority
- US
- United States
- Prior art keywords
- incandescent body
- electric incandescent
- noddack
- manganese
- tungsten
- 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 - Lifetime
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/04—Incandescent bodies characterised by the material thereof
- H01K1/08—Metallic bodies
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- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T428/12826—Group VIB metal-base component
- Y10T428/1284—W-base component
Definitions
- Our invention relates to improvements in electric incandescent bodies, more particularly such as'may be used in electric incandescent lamps, vacuum tubes, and the like, i. e. bodies or members, more specifically filaments, heated to high temperatures in a vacuum or an atmosphere of an inert gas (such as nitrogen or precious gases).
- an inert gas such as nitrogen or precious gases
- Our invention consists of an incandescent body, which consists of tungsten and ekamanganese 75.
- This incandescent body or member has a core of tungsten and an envelope or coating enclosing said core consisting of eka-manganese 7 5 or of an alloy of eka-manganese 75 and tungsten.
- Eka-manganese 75 or rhenium, is a recently discovered metal which has been introduced and described in the following publications 1. Noddack und Tacke, Die Ekamangane in the paper Die Naturwissenschaften, 13th year, No. 26.
- a is the core consisting of tungsten and b the envelope ,or coating consisting of ekamanganese 75 or of a tungsten eka-manganese allo It? has been ascertained that such an incandescent body is able to sustain a considerelectric current. By a thin coating or film of elm-manganese 75 this atomization is coneka-manganese the advantage of cheapness.
- An electric incandescent body applicable to electric incandescent lamps, vacuum tubes and similar purposes consisting of a core of tungsten with a coating of eka-manganese 75, which is alloyed with tungsten.
Description
May 19, 1931. w. NODDACK ET AL 1,806,410
ELECTRIC INCANDESCENT EDDY Filed March 13. 1 29 Patented May 19, 1931 UNITED STATES PATENT OFFICE WALTER NODDACK .AND IDA NODDACK, OF BERLIN-GRUNEWALD, GERMANY, AS!- SIGNORS TO SIEMENS & HALSKE, AKTIENGFSELLSCHAFT. F SIEMENSSTADI, NEAR BERLIN, GERMANY, A CORPORATION OF GERMANY ELEUIB-IC INCANDESCENT BODY Application filed March 13, 1929, Serial .No. 346,766, and in Germany April 12, 1928.
Our invention relates to improvements in electric incandescent bodies, more particularly such as'may be used in electric incandescent lamps, vacuum tubes, and the like, i. e. bodies or members, more specifically filaments, heated to high temperatures in a vacuum or an atmosphere of an inert gas (such as nitrogen or precious gases).
Our invention consists of an incandescent body, which consists of tungsten and ekamanganese 75.
This incandescent body or member has a core of tungsten and an envelope or coating enclosing said core consisting of eka-manganese 7 5 or of an alloy of eka-manganese 75 and tungsten.
Eka-manganese 75, or rhenium, is a recently discovered metal which has been introduced and described in the following publications 1. Noddack und Tacke, Die Ekamangane in the paper Die Naturwissenschaften, 13th year, No. 26.
2. Report of Sessions of the Prussian Academy of Sciences, 1925, No. XIX.
Noddack, Darstellung und Einige Chemische Eigenschaften des Rheniums in the Zeitschrift fiir Physikalische Chemie, volume 125, No. 3/4.
4. Noddack, Die Sauerstofiverbindungen des Rheniums in Zeitschrift fiir Anorganische Chemie, volume 181, No. 1/2.
In the drawing aflixed hereto and forming part of our specification our improved incandescent body or filament is enclosed in the bulb of an ordinary incandescent lamp, the filament as well as the bulb being shown in sectional elevation.
Referring to the single figure of the drawing a is the core consisting of tungsten and b the envelope ,or coating consisting of ekamanganese 75 or of a tungsten eka-manganese allo It? has been ascertained that such an incandescent body is able to sustain a considerelectric current. By a thin coating or film of elm-manganese 75 this atomization is coneka-manganese the advantage of cheapness.
Various modifications and changes may be made Without departing from the spirit and the scope of the invention, and we desire, therefore, that only such limitations shall be placed thereon as are imposed by the prior art.
We claim as our invention:
1. An electric incandescent body applicable to electric incandescent lamps, vacuum tubes and similar purposes, consisting of a core of tungsten with a coating containing eka-manganese 7 5.
2. An electric incandescent body applicable to electric incandescent lamps, vacuum tubes and similar purposes, consisting of a core of tungsten with a coating of eka-manganese 75, which is alloyed with tungsten.
In testimony whereof we aflix our signatures.
WALTER NODDACK. IDA NODDACK.
little above 3600 F. w on traversed by the
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1806410X | 1928-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1806410A true US1806410A (en) | 1931-05-19 |
Family
ID=7744133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US346766A Expired - Lifetime US1806410A (en) | 1928-04-12 | 1929-03-13 | Electric incandescent body |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1806410A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2858207A (en) * | 1954-12-24 | 1958-10-28 | Charles Bertolus Ets | Thermionic cathode cores composed of nickel-rhenium alloy |
-
1929
- 1929-03-13 US US346766A patent/US1806410A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2858207A (en) * | 1954-12-24 | 1958-10-28 | Charles Bertolus Ets | Thermionic cathode cores composed of nickel-rhenium alloy |
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