GB581332A - Improvements in and relating to operating mechanism for electric discharge lamps - Google Patents
Improvements in and relating to operating mechanism for electric discharge lampsInfo
- Publication number
- GB581332A GB581332A GB11773/43A GB1177343A GB581332A GB 581332 A GB581332 A GB 581332A GB 11773/43 A GB11773/43 A GB 11773/43A GB 1177343 A GB1177343 A GB 1177343A GB 581332 A GB581332 A GB 581332A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- discharge lamps
- handle
- electric discharge
- spring
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
Landscapes
- Tumbler Switches (AREA)
Abstract
581,332. Retractive switches; mechanical switches without quick action. BRITISH THOMSON-HOUSTON CO., Ltd. July 20, 1943, No. 11773. Convention date, July 21, 1942. [Class 38 (v)] A switch for use in connection with the starting of electric discharge lamps has a pivoted operating member 13 which can assume three operative positions. If the handle 14 be in extreme left position, the switch is off, If in a mid-position, as shown, a shorting member 22 carried by the part 13 connects two lateral spring contacts, one, 20, being shown, while insulating projections 33, borne on by spring contacts 32, localize the operating member until the handle 14 is pressed over to the right when the spring 32 is pressed so that contacts 34 are made as long as the handle is held, the first pair of contacts 20 being still connected by the member 22. On release contacts 34 open. For starting discharge lamps, contacts 20 are in the direct circuit from a current source while contacts 34 connect the filaments of a lamp in series for preliminary heating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US451699A US2352936A (en) | 1942-07-21 | 1942-07-21 | Operating system for discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB581332A true GB581332A (en) | 1946-10-09 |
Family
ID=23793353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11773/43A Expired GB581332A (en) | 1942-07-21 | 1943-07-20 | Improvements in and relating to operating mechanism for electric discharge lamps |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2352936A (en) |
| GB (1) | GB581332A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2495266A (en) * | 1947-06-06 | 1950-01-24 | A L Smith Iron Company | Starter switch for fluorescent lamps |
| US2481368A (en) * | 1947-10-04 | 1949-09-06 | Gen Electric | Starting switch for fluorescent lamps |
| US2487979A (en) * | 1948-01-16 | 1949-11-15 | David Gottlieb | Electrical switching device |
| US2649511A (en) * | 1949-10-18 | 1953-08-18 | Edwin G Gaynor | Switch |
| US2708225A (en) * | 1952-08-01 | 1955-05-10 | George E Fitzgerald | Panel switch |
| US2689292A (en) * | 1953-07-31 | 1954-09-14 | Jr Urban E Wild | Electric switch |
| US2874338A (en) * | 1955-07-28 | 1959-02-17 | Clum Mfg Company | Unit electrical switch for gang assembly |
| US2936347A (en) * | 1958-10-24 | 1960-05-10 | Cutler Hammer Inc | Electric switch |
-
1942
- 1942-07-21 US US451699A patent/US2352936A/en not_active Expired - Lifetime
-
1943
- 1943-07-20 GB GB11773/43A patent/GB581332A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2352936A (en) | 1944-07-04 |
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