http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-444119-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_18a3206eaadc0ccb8c66ffbb4e7a66f4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01K11-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01K11-00 |
| filingDate | 1934-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1936-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-444119-A |
| titleOfInvention | Improvements in electric discharge lamps |
| abstract | 444,119. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent Treuhand Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) Oct. 5, 1934, No. 28573. [Class 39 (i)] In an anodic incandescent lamp the anode consists of a plurality of fine wires the free ends of which face the cathode or cathodes. The anode may consist of tungsten or tantalum carbide and may be coated, with the exception of the free ends, with magnesia to limit the discharge to the ends. A filling of gas or vapour, such as caesium, at a pressure insufficient to permit of cumulative ionisation, or a grid, may be used to reduce space charges. The cathodes may be coated with oxide and may be directly or indirectly heated. Blackening of the envelope may be reduced by using a cathode consisting of thoriated tungsten or coated with caesium, or by coating the interior of the envelope with cryolite or sodium chloride. One or two rods 9, Fig. 2, are secured in the pinch 2 and support wires 10, the ends of which face an indirectly-heated cathode 8. In another form, a member 13, Fig. 3, of frusto-conical shape, has the whole of its inner surface studded with wires 14. The anode may consist of metal strips 16, Fig. 4, which are joined at their ends by cross-pieces 17 and support wires 18. Seriesconnected filaments are supported from the pinch by rods 20 through a cross-piece 21 and hooks 22, 23. Each filament is arranged in front of a row of anode wires. The wire supports and also the filaments may be arranged on concentric circles. In another form, the cathode 26, Fig. 8, which consists of a directlyheated helix, surrounds an anode in the form of a rod 24 and wires 25. The heater for the cathode may be in parallel with the discharge or may be heated separately through a transformer. When continuous-current is used, the heater may be connected to the supply voltage in series with a resistance, e.g. an incandescent filament, which may be located in the discharge lamp. The anode wires may be straight or consist of helices. Specification 412,356 is referred to. |
| priorityDate | 1934-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.