US2191331A - Electric incandescent lamp - Google Patents
Electric incandescent lamp Download PDFInfo
- Publication number
- US2191331A US2191331A US245281A US24528138A US2191331A US 2191331 A US2191331 A US 2191331A US 245281 A US245281 A US 245281A US 24528138 A US24528138 A US 24528138A US 2191331 A US2191331 A US 2191331A
- Authority
- US
- United States
- Prior art keywords
- eyelets
- filament
- incandescent lamp
- wires
- lamp
- 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
Links
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000004065 semiconductor Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 150000001247 metal acetylides Chemical class 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910026551 ZrC Inorganic materials 0.000 description 1
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 1
- QBXVTOWCLDDBIC-UHFFFAOYSA-N [Zr].[Ta] Chemical compound [Zr].[Ta] QBXVTOWCLDDBIC-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- CLKZWXHKFXZIMA-UHFFFAOYSA-N pyrinuron Chemical compound C1=CC([N+](=O)[O-])=CC=C1NC(=O)NCC1=CC=CN=C1 CLKZWXHKFXZIMA-UHFFFAOYSA-N 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
- H01K1/20—Mountings or supports for the incandescent body characterised by the material thereof
Definitions
- My invention relates to electric incandescent la'mpsgenerally, and more particularly to support members for the-metal filaments of incandescent Electric vacuum-type incandescent lamps in,
- the filament is carried by the lead-in wires and also by one or several supports consisting.
- the finished eyelets are too brittle to be placed in the intended glass part of the lamp by means of machines. Furthermore, wires which are covered with the materials that have been suggested here; 5 tofore have proved to be unsuitable because it is difllcult to coat the materials on the core and be- ,cause, in addition, they break when bent or formed into the shape of eyelets.-
- the layer or coating provided thereon 45 consists of a semi-conductor having a melting point of more than 2700" C.
- the metal core for instance molybdenum wire, may be provided, in a reducing atmosphere, with the particular semiconductor which is deposited from the gaseous 50 phase. Due to the fact that the melting point of the particular semi-conductor is more than 2700 C. (and, therefore, above the temperature which is normally assumed'by the filament *located in the lamp), the covering layeris, under 5 the given circumstances, inert with respect to the material of the filament.
- nitrides of a metal which nitrides have a 10 melting pointof more than 2700" C., are very I suitable for use as the semi-conductors,according to the invention.
- the following may be mentioned:
- carbides of metals can also be used according to the invention, which carbides have a higher melting point than the correspending nitrides.
- Some examples ofthese carbides are: Meltingpoint, 'C. Titanium, carbide 3400 Zirconium carbide ;e ;;c 3400 Tantalum carbide 4000
- the above-mentioned conductors have the ad: I vantage 'thatthey can readily be placed on aj80 metal core.
- a molybdenum wire may be provided witha layer of titanium nitride by leading this wire, in the heated state, through a current of well-dried and oxygen-free mixing gas in which there is mixed titanium chloride vapoor.
- a molybdenum wire running 01? a spool in the above-mentioned atmosphere, with a thin layer of titanium nitride, and to rewind it on another spool.
- The'wire prepared in that manner can be 40 worked without any difficulty and in the same way as the normal molybdenum wire in an eyelet-inserting machine; in other words, the sup porting wires or eyelets can be placed.
- the vacuum-type coiled filament lamps equipped with these eyelets have an efficiency which, forinstance for the 220 volt 15 watt size,
- Another advantage or these semi-conductors over other covering materials lies in the tact that these materials have a coefllcient or expansion which is of the same order of magnitude as that of the customary eyelet material (tungsten or molybdenum) so that the layer will not tend to break'ofl when subjected to temperature changes.
- the invention is uum-type lamps with straight filament and also in vacuum-type lamps with coiled filaments. Because the filament in the latter type is much shorter than in the rormer type. cause the filament length between two hooks is in this case always shorter, the advantage is the greates in this case. In the vacuum-type lamps with coiled filaments, the advantage will be greater the thinner the coil is. a
- the coiled filament I0 is supported at its ends by the lead-in wires H-ll.
- the filament is further supported intermediate its ends by the ends of support wires or eyelets I! the opposite ends or which are advantageous both in vacor rather be type comprising my insealed in the upper end or the glass arbor It.
- the said supportsvor eyelets l2 consist of metal wires (molybdenum or tungsten. for example) coated, in accordance with my invention, with a refractory semi-conductor, such as the nitride or carbide of titanium, zirconium or tantalum.
- an electric incandescent lamp comprising a metal filament supported by lead-in wires and one ormore eyelets, said eyelets consisting of a metal core wire having thereon a coating consisting o! a semi-conductor having a melting point in excess of 2700" C.
- an electric incandescent lamp comprisng a metal filament supported by lead-in wires and one or more eyelets, said eyelets consisting 01a metal core wire having thereon-a coating consisting of one of the metallic compounds selected from the group consisting of nitrides and carbides having av melting point above 2700" C.
- an electric incandescent lamp comprising a metal filament supported by lead-in wires and one or more eyelets, said eyelets consisting of a metal core wire having thereon a coating consisting of one of the metallic compounds selected from the group consisting of nitrides and carbides of titanium, zirconium-and tantalum.
Landscapes
- Resistance Heating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2191331X | 1937-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2191331A true US2191331A (en) | 1940-02-20 |
Family
ID=19873832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US245281A Expired - Lifetime US2191331A (en) | 1937-12-31 | 1938-12-12 | Electric incandescent lamp |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2191331A (fr) |
| BE (1) | BE431903A (fr) |
| FR (1) | FR848136A (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2864731A (en) * | 1956-07-13 | 1958-12-16 | David H Gurinsky | Forming protective films on metal |
| US2865791A (en) * | 1954-03-05 | 1958-12-23 | Metallgesellschaft Ag | Metal nitride coating process |
| US2960642A (en) * | 1958-04-17 | 1960-11-15 | Quartz & Silice S A | Dielectric films and capacitors employing the same |
| US3629642A (en) * | 1970-01-29 | 1971-12-21 | Wagner Electric Corp | Insulated filament supports |
| EP1594158A3 (fr) * | 2004-03-23 | 2007-12-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe à incandescence avec un corps lumineux contenant de carbide |
-
0
- BE BE431903D patent/BE431903A/xx unknown
-
1938
- 1938-12-12 US US245281A patent/US2191331A/en not_active Expired - Lifetime
- 1938-12-29 FR FR848136D patent/FR848136A/fr not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2865791A (en) * | 1954-03-05 | 1958-12-23 | Metallgesellschaft Ag | Metal nitride coating process |
| US2864731A (en) * | 1956-07-13 | 1958-12-16 | David H Gurinsky | Forming protective films on metal |
| US2960642A (en) * | 1958-04-17 | 1960-11-15 | Quartz & Silice S A | Dielectric films and capacitors employing the same |
| US3629642A (en) * | 1970-01-29 | 1971-12-21 | Wagner Electric Corp | Insulated filament supports |
| EP1594158A3 (fr) * | 2004-03-23 | 2007-12-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe à incandescence avec un corps lumineux contenant de carbide |
Also Published As
| Publication number | Publication date |
|---|---|
| BE431903A (fr) | |
| FR848136A (fr) | 1939-10-24 |
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