GB377554A - Improvements in or relating to incandescent electric lamps - Google Patents
Improvements in or relating to incandescent electric lampsInfo
- Publication number
- GB377554A GB377554A GB34639/31A GB3463931A GB377554A GB 377554 A GB377554 A GB 377554A GB 34639/31 A GB34639/31 A GB 34639/31A GB 3463931 A GB3463931 A GB 3463931A GB 377554 A GB377554 A GB 377554A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- lamp
- dec
- wires
- new jersey
- 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
- H01K1/00—Details
- H01K1/62—One or more circuit elements structurally associated with the lamp
- H01K1/70—One or more circuit elements structurally associated with the lamp with built-in short-circuiting device, e.g. for serially connected lamps
Abstract
377,554. Electric incandescent lamps. WESTINGHOUSE LAMP CO., Bloomfield, New Jersey, U.S.A.-(Assignees of Anderson, W. E. ; 31, Columbus Avenue, Montclair, New Jersey, U.S.A.) Dec. 14, 1931, No. 34639. Convention date, Dec. 13, 1930. [Class 39 (ii).] In electric incandescent lamps adapted for series connection, for example for Christmas-tree illumination, the failure of a lamp due to the breakage of the internal filament circuit is indicated by a glow discharge within that lamp. The filament 16 is supported on leading-in wires 13, 14 which are spaced apart by a glass bead 15, and are adapted to function as electrodes by providing a coating of material such as magnesium or aluminium which may be provided by inserting a small slug of the material within the coils of the filament, so that when the filament is heated the material is vaporized and cleans up the residual impurities and is deposited in a thin layer on the wires 13, 14. Alternatively, the vaporizable material may be mixed with a suitable binder and sprayed upon the filament, or the filament may be dipped into the dry powdered material. The lamp bulb 10 is provided with a gaseous filling of either neon or argon, or a mixture of these at a pressure of from 10 to 40 millimetres. During the normal operation of the lamp the illumination is derived entirely from the filament.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US502052A US1972125A (en) | 1930-12-13 | 1930-12-13 | Lamp failure indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB377554A true GB377554A (en) | 1932-07-28 |
Family
ID=23996131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34639/31A Expired GB377554A (en) | 1930-12-13 | 1931-12-14 | Improvements in or relating to incandescent electric lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1972125A (en) |
| DE (1) | DE598892C (en) |
| FR (1) | FR727895A (en) |
| GB (1) | GB377554A (en) |
| NL (1) | NL34648C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447159A (en) * | 1944-06-19 | 1948-08-17 | Gen Electric | Lamp terminal structure and method of manufacture |
| US2967976A (en) * | 1958-05-13 | 1961-01-10 | Lanata German Daniel | Blinking light arrangement |
| US3179847A (en) * | 1960-01-25 | 1965-04-20 | Mott Robert E De | Electrical potential indicator |
-
0
- NL NL34648D patent/NL34648C/xx active
-
1930
- 1930-12-13 US US502052A patent/US1972125A/en not_active Expired - Lifetime
-
1931
- 1931-12-05 FR FR727895D patent/FR727895A/en not_active Expired
- 1931-12-11 DE DEW87734D patent/DE598892C/en not_active Expired
- 1931-12-14 GB GB34639/31A patent/GB377554A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE598892C (en) | 1934-06-20 |
| NL34648C (en) | |
| US1972125A (en) | 1934-09-04 |
| FR727895A (en) | 1932-06-25 |
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