GB404578A - Improvements in electric incandescent lamps - Google Patents
Improvements in electric incandescent lampsInfo
- Publication number
- GB404578A GB404578A GB23011/33A GB2301133A GB404578A GB 404578 A GB404578 A GB 404578A GB 23011/33 A GB23011/33 A GB 23011/33A GB 2301133 A GB2301133 A GB 2301133A GB 404578 A GB404578 A GB 404578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- screen
- lamp
- filament
- electric incandescent
- 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
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K9/00—Lamps having two or more incandescent bodies separately heated
- H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
404,578. Electric incandescent lamps with internal screens. HONING, W., 12, Van Meursstraat, and OUDEMANS, G., 6, Kwartael Street, both in Eindhoven, Holland. Aug. 17, 1933, No. 23011. [Class 39 (ii).] An electric incandescent lamp for use in a vehicle headlight comprises a main filament 13 mounted so as to lie at the focus of the headlight reflector, a second filament 14 parallel to the axis of the lamp but spaced therefrom, and a V-sectioned screen or trough 19, preferably of dull or non - reflecting material, co-operating with the latter filament to produce below the horizontal axis a non-dazzle beam of the form shown in Fig. 3. The upper edges of the screen lie in a plane substantially at the axis of the lamp and, by tilting the screen, the non- dazzle beam may be directed mainly on to the pavement at the near side of the vehicle. The ends of the respective filaments 13, 14 are connected to leading-in wires 17, 18 and to a common return wire 16 which supports the screen 19. The main filament 13 may extend either along or transversely to the axis of the lamp, or may be V-shaped, with its apex on the axis and at the focus of the reflector.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23011/33A GB404578A (en) | 1933-08-17 | 1933-08-17 | Improvements in electric incandescent lamps |
US739039A US2071979A (en) | 1933-08-17 | 1934-08-08 | Electric incandescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23011/33A GB404578A (en) | 1933-08-17 | 1933-08-17 | Improvements in electric incandescent lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB404578A true GB404578A (en) | 1934-01-18 |
Family
ID=10188649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23011/33A Expired GB404578A (en) | 1933-08-17 | 1933-08-17 | Improvements in electric incandescent lamps |
Country Status (2)
Country | Link |
---|---|
US (1) | US2071979A (en) |
GB (1) | GB404578A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL72673C (en) * | 1949-04-13 | |||
US3293475A (en) * | 1963-05-08 | 1966-12-20 | Grunning Sven | Multifilament lamp with a full shield for one filament |
NL154058B (en) * | 1968-06-08 | 1977-07-15 | Philips Nv | HALOGEN BULB FOR VEHICLE LIGHTING. |
-
1933
- 1933-08-17 GB GB23011/33A patent/GB404578A/en not_active Expired
-
1934
- 1934-08-08 US US739039A patent/US2071979A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2071979A (en) | 1937-02-23 |
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