GB191125916A - Improvements in and connected with Electrodes for Arc Lamps. - Google Patents
Improvements in and connected with Electrodes for Arc Lamps.Info
- Publication number
- GB191125916A GB191125916A GB191125916DA GB191125916A GB 191125916 A GB191125916 A GB 191125916A GB 191125916D A GB191125916D A GB 191125916DA GB 191125916 A GB191125916 A GB 191125916A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- arc
- electrodes
- carbon
- throngh
- 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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B31/00—Electric arc lamps
- H05B31/0057—Accessories for arc lamps
- H05B31/0066—Saving arrangements; Ventilation devices
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
25,916. Beck, H. Nov. 20. Arc lamps.-A positive electrode for searchlights and for flash and other lamps contains flame-arc material in the form of a core or otherwise, and is of smaller diameter than the crater which would be produced by the same current in a carbon not containing such materials. High luminous efficiency is thus obtained. The negative carbon may be of smaller diameter than the positive one, and may have a coating of metal to increase its conductivity, and a core of material such as graphite, tungsten, or the like, more refractory than carbon, so that a point is formed in burning. The electrodes may have longitudinal ribs, and are cooled and protected by gases or vapours such as coal gas, carbon dioxide, nitrogen, hydrogen, acetylene, benzine, ether, alcohol, or naphthalene; these confine the arc to the end of the positive electrode. Such gases may be supplied through an electrode itself, or through an annular space d in a metal sleeve c surrounding an electrode, or throngh a number of nozzles opening from a chamber in such a sleeve. If sufficient pressure is used, the same jet or jets may protect both electrodes. A flat nozzle may send a current of gas at right-angles to an electrode near its end. Liquids may be fed through a tube surrounded by a series heating- resistance, or may be dropped on to an electrode or on to a plate near the arc. Solids such as naphthalene may be dropped on to a similar plate or formed into a coating for an electrode. The electrodes may be rotated slowly by hand or otherwise. The metal sleeve c may have cooling-ribs or a water-jacket, and may supply current to the electrode throngh a pair of spring-pressed pins.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191125916T | 1911-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191125916A true GB191125916A (en) | 1912-03-21 |
Family
ID=32568702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191125916D Expired GB191125916A (en) | 1911-11-20 | 1911-11-20 | Improvements in and connected with Electrodes for Arc Lamps. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191125916A (en) |
-
1911
- 1911-11-20 GB GB191125916D patent/GB191125916A/en not_active Expired
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