GB183389A - Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched - Google Patents
Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretchedInfo
- Publication number
- GB183389A GB183389A GB27512/21A GB2751221A GB183389A GB 183389 A GB183389 A GB 183389A GB 27512/21 A GB27512/21 A GB 27512/21A GB 2751221 A GB2751221 A GB 2751221A GB 183389 A GB183389 A GB 183389A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric
- incandescent
- relating
- filament
- kept stretched
- 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
- H01K7/00—Lamps for purposes other than general lighting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
Landscapes
- Resistance Heating (AREA)
Abstract
183,389. Naamlooze Vennootschap Metaaldraadlampenfabriek Holland. July 29, 1921, [Convention date]. Vacuum tubes.-In an electric incandescent lamp or other apparatus having a stretched filament, the filament 2 is kept taut by a spring 5 of tungsten or other metal which rebains its elasticity when heated and the current is carried by a bridgepiece 3 across the filament, between its extremity and the terminal 4, this bridge being made of nickel or other suitable metal of low resistance. In an alternative form, the bridge piece is helical and concentric with the spring 5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL183389X | 1921-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB183389A true GB183389A (en) | 1922-07-27 |
Family
ID=19777469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27512/21A Expired GB183389A (en) | 1921-07-29 | 1921-10-17 | Improvements in and relating to electric incandescent lamps and other electric apparatus in which an incandescent filament requires to be kept stretched |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB183389A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991010257A1 (en) * | 1988-12-27 | 1991-07-11 | Eastman Kodak Company | Lamp for scanning apparatus |
-
1921
- 1921-10-17 GB GB27512/21A patent/GB183389A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991010257A1 (en) * | 1988-12-27 | 1991-07-11 | Eastman Kodak Company | Lamp for scanning apparatus |
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