GB189819785A - Improvements in Incandescent Bodies for Incandescent Electric Lamps and in the Process of Manufacturing the same. - Google Patents
Improvements in Incandescent Bodies for Incandescent Electric Lamps and in the Process of Manufacturing the same.Info
- Publication number
- GB189819785A GB189819785A GB189819785DA GB189819785A GB 189819785 A GB189819785 A GB 189819785A GB 189819785D A GB189819785D A GB 189819785DA GB 189819785 A GB189819785 A GB 189819785A
- Authority
- GB
- United Kingdom
- Prior art keywords
- incandescent
- bodies
- moulded
- metals
- graphite
- 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
Links
Landscapes
- Resistance Heating (AREA)
Abstract
19,785. Kellner, C. Sept. 17. Incandescent lamps. - Resistant incandescing bodies are moulded under great pressure from powdered very infusible metals, such as thorium, titanium, chromium, or wolfram, or alloys of such metals, or titanium nitride, and are oxidized on their surfaces by making them incandescent in air, or by immersing them in an oxidizing-liquid, or by making them anodes in a suitable electrolyte. Or the incandescing bodies may be moulded from mixtures of refractory oxides such as thoria, which may contain ceria, with very infusible metals or alloys, or with not more than 5 per cent. of graphite such as offers the greatest resistance to attack by a mixture of nitric acid and potassium chlorate. The graphite may be formed by adding cellulose soaked in zinc chloride to a mixture of refractory oxides, heating the body in a vacuum or a neutral gas such as nitrogen, and applying a high potential difference. Leading-in wires are moulded into thick ends formed on the incandescent bodies, or are fused therein by means of an arc.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB189819785T | 1898-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB189819785A true GB189819785A (en) | 1899-05-06 |
Family
ID=32141914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB189819785D Expired GB189819785A (en) | 1898-09-17 | 1898-09-17 | Improvements in Incandescent Bodies for Incandescent Electric Lamps and in the Process of Manufacturing the same. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB189819785A (en) |
-
1898
- 1898-09-17 GB GB189819785D patent/GB189819785A/en not_active Expired
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