GB210105A - Improvements in lamps for vehicles - Google Patents
Improvements in lamps for vehiclesInfo
- Publication number
- GB210105A GB210105A GB2091422A GB2091422A GB210105A GB 210105 A GB210105 A GB 210105A GB 2091422 A GB2091422 A GB 2091422A GB 2091422 A GB2091422 A GB 2091422A GB 210105 A GB210105 A GB 210105A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- give
- mirror
- main reflector
- filament
- 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
210,105. Graves, A. July 31, 1922. Vehicle lamps.-In lamps for vehicles having a small hemispherical shade or reflector adapted to prevent access of light rays to one-half of the main reflector, whereby a semicircular beam of light having a flat horizontal top is projected, the small reflector is arranged inside the lamp bulb. The filament used to give a dim light may be arranged away from the centre of curvature of the small mirror and also out of the focus of the main reflector. In the arrangement shown in Fig. 9, a filament f<1> is arranged at the focus of the main reflector (not shown) to give the full light, and a filament f<2> is arranged in conjunction but not concentric with the mirror M to give the dim light. The filament f<1> may also lie within the periphery of the mirror M. Independent supports may carry the mirror M, or it may be carried by a bracket attached at d to the common leading-in wire by welding or by a glass bead. The two filaments may be composed of three radiating sections a, b, c, Fig. 11, the two sections a, c being incandensced together to give the full light, and the sections b, c, together to give the dim light, F indicating the position of the focus of the main reflector and C that of the centre of curvature of the mirror M. The position of the source of light with respect to the main reflector mav be adjusted by means of the adjustable lamp holder described in Specification 188,057.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2091422A GB210105A (en) | 1922-07-31 | 1922-07-31 | Improvements in lamps for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2091422A GB210105A (en) | 1922-07-31 | 1922-07-31 | Improvements in lamps for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB210105A true GB210105A (en) | 1924-01-31 |
Family
ID=10153931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2091422A Expired GB210105A (en) | 1922-07-31 | 1922-07-31 | Improvements in lamps for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB210105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598342A (en) * | 1984-07-09 | 1986-07-01 | Gte Products Corporation | Low wattage double filament tungsten-halogen lamp |
-
1922
- 1922-07-31 GB GB2091422A patent/GB210105A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598342A (en) * | 1984-07-09 | 1986-07-01 | Gte Products Corporation | Low wattage double filament tungsten-halogen lamp |
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