GB334285A - Improvements in or relating to sealed glass envelopes for incandescent electric lamps and the like - Google Patents
Improvements in or relating to sealed glass envelopes for incandescent electric lamps and the likeInfo
- Publication number
- GB334285A GB334285A GB1718529A GB1718529A GB334285A GB 334285 A GB334285 A GB 334285A GB 1718529 A GB1718529 A GB 1718529A GB 1718529 A GB1718529 A GB 1718529A GB 334285 A GB334285 A GB 334285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- relating
- glass envelopes
- sealed glass
- electric lamps
- 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
- H01J5/32—Seals for leading-in conductors
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
334,285. Paine, N. E., and Bethell, W. E. June 4, 1929. Making lamps.-In the construction of glass envelopes for lamps or the like in which the exhaust tube is housed within the foot tube, the exhaust tube is sealed to the latter and the necessary communicating passage for exhausting the bulb is formed therein prior to the formation of the customary pinch. A closed exhaust tube 12 is formed with a protuberance 21 which is heated to contact with a foot tube 10. The tube 12 may be extended so as to be sealed into the pinch. In a modification, a plain exhaust tube may be assembled within the foot tube and the latter heated to form the necessary passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1718529A GB334285A (en) | 1929-06-04 | 1929-06-04 | Improvements in or relating to sealed glass envelopes for incandescent electric lamps and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1718529A GB334285A (en) | 1929-06-04 | 1929-06-04 | Improvements in or relating to sealed glass envelopes for incandescent electric lamps and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB334285A true GB334285A (en) | 1930-09-04 |
Family
ID=10090745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1718529A Expired GB334285A (en) | 1929-06-04 | 1929-06-04 | Improvements in or relating to sealed glass envelopes for incandescent electric lamps and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB334285A (en) |
-
1929
- 1929-06-04 GB GB1718529A patent/GB334285A/en not_active Expired
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