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.

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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
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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
Application number
Inventor
Carl Kellner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB189819785A publication Critical patent/GB189819785A/en
Expired legal-status Critical Current

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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.
GB189819785D 1898-09-17 1898-09-17 Improvements in Incandescent Bodies for Incandescent Electric Lamps and in the Process of Manufacturing the same. Expired GB189819785A (en)

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)

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