GB429030A - Improvements in electric discharge lamps - Google Patents

Improvements in electric discharge lamps

Info

Publication number
GB429030A
GB429030A GB32328/33A GB3232833A GB429030A GB 429030 A GB429030 A GB 429030A GB 32328/33 A GB32328/33 A GB 32328/33A GB 3232833 A GB3232833 A GB 3232833A GB 429030 A GB429030 A GB 429030A
Authority
GB
United Kingdom
Prior art keywords
projector
nov
focus
wires
bodies
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
GB32328/33A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB429030A publication Critical patent/GB429030A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

429,030. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) Nov. 20, 1933, No. 32328. Convention date, Nov. 19, 1932. [Class 39 (i)] [See also Group XI] A headlight adapted to be carried by a vehicle comprises a discharge lamp 1 in which the discharge passes through the focus 27 of a projector 26 as a shunt across a loop-shaped incandescent filament 6 the ends 7, 8 of which are disposed symmetrically on either side of the common axis of the lamp and of the projector and in a plane passing through the focus and are coated with, or surround bodies of, material of low work function to form the electrodes. The bodies may consist of sintered mixtures of refractory metals and alkaline earths. The leading-in wires 3, 4 of the filament are secured together by glass beads 5, 18 and are welded at 16 to leading-in wires 14, 15 of a cylindrical vessel 10 which is provided with a cap 12 and surrounds, and supports by means of an annular spring 19, the spherical bulb 1. The cap 12 fits in a bayonet holder 22 which is held in the parabolic projector by a sleeve 25. The filling consists of rare gas and sodium and the bulb 1 is formed of borosilicate glass.
GB32328/33A 1932-11-19 1933-11-20 Improvements in electric discharge lamps Expired GB429030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE429030X 1932-11-19

Publications (1)

Publication Number Publication Date
GB429030A true GB429030A (en) 1935-05-20

Family

ID=6477550

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32328/33A Expired GB429030A (en) 1932-11-19 1933-11-20 Improvements in electric discharge lamps

Country Status (1)

Country Link
GB (1) GB429030A (en)

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