GB534622A - Improvements in and relating to holders for electric lamps - Google Patents
Improvements in and relating to holders for electric lampsInfo
- Publication number
- GB534622A GB534622A GB2452539A GB2452539A GB534622A GB 534622 A GB534622 A GB 534622A GB 2452539 A GB2452539 A GB 2452539A GB 2452539 A GB2452539 A GB 2452539A GB 534622 A GB534622 A GB 534622A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- holders
- switch
- relating
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
- F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/945—Holders with built-in electrical component
- H01R33/96—Holders with built-in electrical component with switch operated by engagement or disengagement of coupling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
534,622. Lamp-holders. BRITISH THOMSON-HOUSTON CO., Ltd., and SCOTT W. J. Aug. 25, 1939, No. 24525. [Class 38 (i)] Each holder for a tubular lamp having two contact pins on each end cap, particularly for discharge lamps as described in Specification 526,713 or where high voltage resonant or other supply circuits are used, is fitted with a double-pole switch 4, 5 biassed to the open position and closed by the insertion of the lamp to prevent the lamp becoming live on the insertion of one end only. The lamp cap depresses a plunger 13, Fig. 2, carrying contacts 15, 16 that bridge the two pairs of switch contacts 12, 11. A starting switch 7 with heater 8 is shown in this circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2452539A GB534622A (en) | 1939-08-25 | 1939-08-25 | Improvements in and relating to holders for electric lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2452539A GB534622A (en) | 1939-08-25 | 1939-08-25 | Improvements in and relating to holders for electric lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB534622A true GB534622A (en) | 1941-03-12 |
Family
ID=10213025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2452539A Expired GB534622A (en) | 1939-08-25 | 1939-08-25 | Improvements in and relating to holders for electric lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB534622A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432139A1 (en) * | 1978-07-27 | 1980-02-22 | Chiotasso Pierre | Fixture for supporting fluorescent tube - has flexible contact to allow for final axial movement during fitting |
EP2217855A1 (en) * | 2007-11-19 | 2010-08-18 | Eskilstuna Elektronikpartner AB | Safety device for a light fitting |
-
1939
- 1939-08-25 GB GB2452539A patent/GB534622A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432139A1 (en) * | 1978-07-27 | 1980-02-22 | Chiotasso Pierre | Fixture for supporting fluorescent tube - has flexible contact to allow for final axial movement during fitting |
EP2217855A1 (en) * | 2007-11-19 | 2010-08-18 | Eskilstuna Elektronikpartner AB | Safety device for a light fitting |
EP2217855A4 (en) * | 2007-11-19 | 2013-07-10 | Eskilstuna Elektronikpartner Ab | Safety device for a light fitting |
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