GB700014A - Improvements in switching arrangements for controlling low pressure electric discharge lamps - Google Patents
Improvements in switching arrangements for controlling low pressure electric discharge lampsInfo
- Publication number
- GB700014A GB700014A GB2768150A GB2768150A GB700014A GB 700014 A GB700014 A GB 700014A GB 2768150 A GB2768150 A GB 2768150A GB 2768150 A GB2768150 A GB 2768150A GB 700014 A GB700014 A GB 700014A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- button
- switches
- depression
- push
- 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
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
700,014. Hand actuating devices for switches. BRITISH THOMSON-HOUSTON CO., Ltd., and MILLS, R. V. Oct. 18, 1951 [Nov. 13, 1950], No. 27681/50. Class 38(5) [Also in Group XXXV] A manual switching arrangement for controlling the supply and electrode preheating circuits of a discharge lamp comprises a tandem assembly of two separate respective push button switches 3, 6 so arranged that the push button of only one is accessible for operation and depression thereof actuates both in a predetermined sequence. As shown, the switch 3 is mounted on a resilient member 10 secured to the fixing brackets 11 of switch 6, which latter may be a " micro-switch ". The switch 3 is of the " push-on ", " push-off " type and requires greater operating pressure than switch 6 which is of the type wherein depression and release of its push button 7 respectively makes and breaks its contacts. This arrangement provides that depression of button 8 initially moves switch 3 to close switch 6, followed by closure of switch 3. Release of button 8 opens switch 6 only. Further depression and release of button 8 recloses switch 6 and then opens both switches to the rest position. In modifications the physical positions of the switches may be reversed, or the resiliently mounted switch may alternatively be slidably mounted between guides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2768150A GB700014A (en) | 1950-11-13 | 1950-11-13 | Improvements in switching arrangements for controlling low pressure electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2768150A GB700014A (en) | 1950-11-13 | 1950-11-13 | Improvements in switching arrangements for controlling low pressure electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700014A true GB700014A (en) | 1953-11-25 |
Family
ID=10263549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2768150A Expired GB700014A (en) | 1950-11-13 | 1950-11-13 | Improvements in switching arrangements for controlling low pressure electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB700014A (en) |
-
1950
- 1950-11-13 GB GB2768150A patent/GB700014A/en not_active Expired
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