GB383165A - Improvements in electric lamps - Google Patents

Improvements in electric lamps

Info

Publication number
GB383165A
GB383165A GB9798/32A GB979832A GB383165A GB 383165 A GB383165 A GB 383165A GB 9798/32 A GB9798/32 A GB 9798/32A GB 979832 A GB979832 A GB 979832A GB 383165 A GB383165 A GB 383165A
Authority
GB
United Kingdom
Prior art keywords
filament
screen
supported
wires
glass
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
GB9798/32A
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 GB383165A publication Critical patent/GB383165A/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
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/045—Thermic screens or reflectors

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

383,165. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent Treuhand Ges. fur Electrische Gluhlampen ; 11, Ehrenbergstrasse, Berlin.) April 5, 1932, No. 9798. Convention date, May 7, 1931. [Class 39 (i).] In an enclosed electric arc lamp of the type wherein the electrodes 7 have an electronemitting filament 9 permanently connected across them, and the envelope is provided with a gas filling and a pool 10 of vaporizable metal, a screen 11 is arranged below the filament to protect the vaporizable pool from excessive heating. The screen, which is supported by wires 12 fused into a glass bead 14 supported on transverse wires 13, may consist of a circular gauze of molybdenum, as shown, or may be in the form of a hemispherical cup of heat resistant material which is polished on the inside to reflect heat and light rays back to the reflector normally provided on the lamp fitting. The filament 9 is supported by eyelets 8, 15 respectively formed in the electrode-supporting wires 6 and screen-supporting wires 12. The envelope 3 consists of quartz or other glass such as borosilicate glass which is transparent to ultraviolet rays, and the filling may consist of argon, nitrogen or other gas.
GB9798/32A 1931-05-07 1932-04-05 Improvements in electric lamps Expired GB383165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE383165X 1931-05-07

Publications (1)

Publication Number Publication Date
GB383165A true GB383165A (en) 1932-11-10

Family

ID=6363151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9798/32A Expired GB383165A (en) 1931-05-07 1932-04-05 Improvements in electric lamps

Country Status (2)

Country Link
US (1) US1967906A (en)
GB (1) GB383165A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862125A (en) * 1956-01-06 1958-11-25 Sylvania Electric Prod Heat shield for incandescent lamp
US3034007A (en) * 1959-01-23 1962-05-08 Gen Electric Electric incandescent lamp
AU604126B2 (en) * 1987-06-11 1990-12-06 Kabushiki Kaisha Toshiba High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angles and manufacturing method of the same

Also Published As

Publication number Publication date
US1967906A (en) 1934-07-24

Similar Documents

Publication Publication Date Title
GB404448A (en) Improvements in luminous electric discharge tubes
GB383165A (en) Improvements in electric lamps
GB484328A (en) Improvements in combinations of metal vapour electric discharge devices, adapted to emit radiation, and electric incandescent lamps
GB393515A (en) Improvements in luminous electric discharge tubes
GB361804A (en) Improvements in electric luminous discharge tubes
GB393849A (en) Improvements in luminous electric discharge tubes
GB400756A (en) Improvements in electric lamps
GB372154A (en) Improvements in luminous electric discharge tubes
GB360339A (en) Improvements in or relating to electric lamps
GB397887A (en) Improvements in and relating to electric lamps
GB355175A (en) Improvements in or relating to electric lamps
GB429030A (en) Improvements in electric discharge lamps
GB407565A (en) Improvements in luminous electric discharge lamps
GB378333A (en) Improvements in electric lamps
GB398994A (en) Improvements in electric incandescent lamps
GB381866A (en) Improvements in electric lamps
GB459323A (en) Improvements in or relating to electric discharge lamps
GB446764A (en) Improvements in or relating to motor-road vehicle lamps and the like
GB390384A (en) Improvements in and relating to electric lamps
GB460963A (en) Improvements in or relating to means for illumination comprising luminescent materials
GB417986A (en) Improvements in and relating to electric lamps
GB369987A (en) Improvements relating to electric rare gas discharge lamps
GB301433A (en) Improvements in or relating to electric gaseous beacon lamps
GB550375A (en) Improvements in and relating to vapour lamps
GB427111A (en) Improvements in and relating to illuminating systems comprising metal vapour electric discharge lamps combined with incandescent lamps