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
GB4775/36A
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.)
CHARLES SIROT
Original Assignee
CHARLES SIROT
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 CHARLES SIROTfiledCriticalCHARLES SIROT
Publication of GB464459ApublicationCriticalpatent/GB464459A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
464,459. Electric incandescent lamps with internal screens. SIROT, C. Feb. 17, 1936, No. 4775. Convention date, Feb. 15, 1935. [Class 39 (ii)] In an electric lamp for vehicle headlights, of the kind wherein the filament is screened by a screen provided within the bulb, the projection of a shadow by the leading-in wire connected to the filament is avoided by introducing the wire 6 through a lateral notch provided in the screen 3. The wire is secured within the notch by an insulating lute 10. A ventilation aperture 7 at the upper portion of the screen is shielded by a secondary screen portion 8 to prevent the emergence of light-rays from the filament 2. Specification 410,277 is referred to.
GB4775/36A1935-02-151936-02-17Improvements in electric incandescent lamps for vehicle headlights
ExpiredGB464459A
(en)
Improvements in sources of light comprising in combination a high-pressure metal-vapour electric discharge device and an electric incandescent filament
Improvements introduced in the manufacture of lamps incandescent for lighting of vehicles (Machine-translation by Google Translate, not legally binding)
Improvements in means for producing light comprising in combination an electric discharge lamp and an electric incandescent lamp whose filament is in series with the discharge path