GB698465A - Improvements in and relating to electric filament lamps - Google Patents
Improvements in and relating to electric filament lampsInfo
- Publication number
- GB698465A GB698465A GB1232051A GB1232051A GB698465A GB 698465 A GB698465 A GB 698465A GB 1232051 A GB1232051 A GB 1232051A GB 1232051 A GB1232051 A GB 1232051A GB 698465 A GB698465 A GB 698465A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- reflector
- metal
- wires
- sealed
- 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
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
698,465. Electric incandescent lamps. BRITISH THOMSON - HOUSTON CO., Ltd., March 6, 1952 [May 25, 1951], No. 12320/51. Class 39(ii) In order to facilitate the accurate positioning of a lamp filament or filaments 4 relative to a reflector, more particularly in a prefocus type lamp such as a dualfilament sealedbeam lamp, the filament-supporting wires 3 are embedded within a solid glass member 2 which is located within, and sealed to, a metal collar 1 adapted to be sealed to a reflector 13. The reflector may consist of glass with an internal metal coating, as in Fig. 5, or may be of metal to which a glass front lens is welded. Alternatively, a glass bulb 8, Fig. 4, may be sealed to the shoulder portion 7 of a metal collar 1 provided with a top flange 6 for attachment to a reflector. The filament-supporting wires 3 and connecting pins 5, may be welded end to end to a short intermediate length of wire that is embedded completely within the glass member 2 and consists of a metal having an expansion characteristic which matches that of the glass 2. Alternatively, the leading-in wires may consist of two wires welded end to end, either of which has an expansion characteristic matching that of the glass 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1232051A GB698465A (en) | 1951-05-25 | 1951-05-25 | Improvements in and relating to electric filament lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1232051A GB698465A (en) | 1951-05-25 | 1951-05-25 | Improvements in and relating to electric filament lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB698465A true GB698465A (en) | 1953-10-14 |
Family
ID=10002346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1232051A Expired GB698465A (en) | 1951-05-25 | 1951-05-25 | Improvements in and relating to electric filament lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB698465A (en) |
-
1951
- 1951-05-25 GB GB1232051A patent/GB698465A/en not_active Expired
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