GB235191A - Improvements in or relating to incandescent electrical lamps - Google Patents
Improvements in or relating to incandescent electrical lampsInfo
- Publication number
- GB235191A GB235191A GB14422/25A GB1442225A GB235191A GB 235191 A GB235191 A GB 235191A GB 14422/25 A GB14422/25 A GB 14422/25A GB 1442225 A GB1442225 A GB 1442225A GB 235191 A GB235191 A GB 235191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- leading
- filament
- insulation
- cap
- 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
- H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
- H01K9/04—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in manually operated switch
Landscapes
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
235,191. Neue Gluhlampen Ges., (Assignees of Berger, W.). June 3, 1924, [Convention date]. Multiple-filament lamps; caps; leading-in wires.-In bulbs of the kind wherein a number of central contacts e, f connected to the several filaments are adapted to be brought into use successively, the insulation g between them is arranged so that it can only be removed after the leading-in wire d to the discarded filament has been broken. This wire passes through apertures in the inner contact and in the insulating-disc g, and is soldered to the outer contact. The part of the leading-in wire d within the cap is enclosed in a glass tube k to prevent it from contacting with the leading-in wire c connected to the other filament. The contacts are attached to pins e<1>, f<1> by which they are secured in the insulation h of the cap. In the Specification as open to inspection under Sect. 91 (3) (a) a bulb is described wherein the several filaments comprise different lengths of a single wire. This form does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE235191X | 1924-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB235191A true GB235191A (en) | 1925-12-10 |
Family
ID=5895578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14422/25A Expired GB235191A (en) | 1924-06-03 | 1925-06-02 | Improvements in or relating to incandescent electrical lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB235191A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782429A (en) * | 1987-04-10 | 1988-11-01 | Walton John F | Long-life luminaires |
-
1925
- 1925-06-02 GB GB14422/25A patent/GB235191A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782429A (en) * | 1987-04-10 | 1988-11-01 | Walton John F | Long-life luminaires |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB235191A (en) | Improvements in or relating to incandescent electrical lamps | |
US3611010A (en) | Series-type electric incandescent lamp with integral automatic cutout means | |
US1813572A (en) | Lamp base | |
GB282066A (en) | Improvements in and relating to filaments for incandescent lamps or similar articles and to methods of manufacturing the same | |
GB656633A (en) | Improvements in electric incandescent lamps and method of manufacturing the same | |
US1967878A (en) | Incandescent lamp or similar device | |
GB249737A (en) | Improvements in or relating to electric glow lamps | |
GB317833A (en) | Improvements in and relating to multiple filament incandescent lamps | |
GB435527A (en) | Improvements in and relating to electric lamps or the like | |
SU14865A1 (en) | Base to a two-filament incandescent light bulb | |
GB393999A (en) | Improvements in caps for multi-filament electric lamps | |
GB253536A (en) | Improvements in and relating to electric incandescent lamps | |
SU12050A1 (en) | Electric incandescent lamp with two filaments, switched on one by one | |
GB296315A (en) | Improvements in incandescent electric tubes | |
GB163478A (en) | Improvements in electric incandescent lamps | |
GB191123725A (en) | Improvements in Incandescence Electric Lamps. | |
GB433274A (en) | Improvements in metal caps for electric incandescent lamps, electric discharge devices and the like | |
GB253138A (en) | Improvements in caps for multi-filament electric lamps and similar apparatus | |
GB398693A (en) | Improvements in electric incandescent lamps | |
GB253535A (en) | Improvements in and relating to electric incandescent lamps | |
GB486418A (en) | 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 | |
GB262166A (en) | Improvements relating to electric lamps | |
GB176309A (en) | Improvements in or relating to the renewal of electric incandescent lamps | |
GB452121A (en) | Improvements in incandescent electric lamps | |
GB331796A (en) | Improvements in electric incandescent lamps |