GB717630A - Improvements in and relating to electric incandescent lamps - Google Patents
Improvements in and relating to electric incandescent lampsInfo
- Publication number
- GB717630A GB717630A GB18373/52A GB1837352A GB717630A GB 717630 A GB717630 A GB 717630A GB 18373/52 A GB18373/52 A GB 18373/52A GB 1837352 A GB1837352 A GB 1837352A GB 717630 A GB717630 A GB 717630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bush
- exhausting
- july
- tube
- relating
- 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
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Heating (AREA)
Abstract
717,630. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. July 21, 1952 [July 20, 1951], No. 18373/52. Class 39(1) [Also in Group XI] In making electrical devices having an exhausting-tube and leading-in wires sealed into the neck of a glass envelope by the application of heat and pressure to form a pinch, the exhaust passage is prevented from collapsing by inserting therein a hollow support comprising a split metal bush of yieldable construction in order to prevent cracking of the pressed portion when subjected to subsequent cooling. The bush 9 is preferably made of copper, or chrome-iron alloy, with overlapping edges 10 and 11. To facilitate the insertion of the bush into an exhausting-tube the latter is preferably flared slightly at its upper end.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US717630XA | 1951-07-20 | 1951-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717630A true GB717630A (en) | 1954-10-27 |
Family
ID=22103419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18373/52A Expired GB717630A (en) | 1951-07-20 | 1952-07-21 | Improvements in and relating to electric incandescent lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB717630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043502B (en) * | 1955-09-07 | 1958-11-13 | British Thomson Houston Co Ltd | Electric lamp with a glass bulb and an outwardly protruding flat glass pinch foot |
| FR2210822A1 (en) * | 1972-12-18 | 1974-07-12 | Gen Electric |
-
1952
- 1952-07-21 GB GB18373/52A patent/GB717630A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043502B (en) * | 1955-09-07 | 1958-11-13 | British Thomson Houston Co Ltd | Electric lamp with a glass bulb and an outwardly protruding flat glass pinch foot |
| FR2210822A1 (en) * | 1972-12-18 | 1974-07-12 | Gen Electric |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB560244A (en) | Improvements in electric discharge lamps | |
| GB946751A (en) | Improvements in or relating to connectors on electrical devices | |
| GB717630A (en) | Improvements in and relating to electric incandescent lamps | |
| GB882190A (en) | Improvements in or relating to envelopes for electrical devices | |
| GB550551A (en) | Improvements in and relating to gettering arrangements for highly evacuated envelopes of electron discharge tubes | |
| GB476836A (en) | Improvements in or relating to electric discharge devices having an inner envelope and an outer jacket capped at one end | |
| GB1007244A (en) | Improvements relating to electric incandescent lamps | |
| GB656633A (en) | Improvements in electric incandescent lamps and method of manufacturing the same | |
| GB788655A (en) | Improvements in electric discharge lamps | |
| GB577738A (en) | Improvements relating to sealing conductors through exhaust tubes of evacuated vitreous envelopes | |
| GB498617A (en) | Improvements in and relating to the leading-in wires of high pressure electric discharge lamps | |
| GB713828A (en) | Improvements in lead-in conductors for electric lamps and the like | |
| GB731317A (en) | Improvements relating to ozonising apparatus | |
| GB983465A (en) | A microminiature electric incandescent lamp | |
| GB634443A (en) | Improvements in and relating to seals for electric discharge devices | |
| GB552657A (en) | Improvements in and relating to gaseous electric discharge lamps | |
| GB731587A (en) | Method of and apparatus for forming and mounting an electrode structure in electric lamps and similar devices | |
| GB1263846A (en) | Methods of making electric incandescent lamps | |
| GB1233779A (en) | ||
| GB838779A (en) | Improvements in seals for electric discharge lamps | |
| GB676143A (en) | Improvements in electric discharge lamps | |
| GB1049627A (en) | Miniature incandescent electric lamp and method of its manufacture | |
| GB628254A (en) | Improvements in and relating to seals for electric discharge devices | |
| GB637541A (en) | Incandescent electric lamp | |
| GB504874A (en) | Process for the manufacture of electric lamp bases from hard glass or quartz glass and incandescent lamps incorporating bases made by such process |