GB877053A - Improvements in or relating to combined electrical indicating and switching devices - Google Patents
Improvements in or relating to combined electrical indicating and switching devicesInfo
- Publication number
- GB877053A GB877053A GB36635/57A GB3663557A GB877053A GB 877053 A GB877053 A GB 877053A GB 36635/57 A GB36635/57 A GB 36635/57A GB 3663557 A GB3663557 A GB 3663557A GB 877053 A GB877053 A GB 877053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- holder
- transformer
- lamp
- lens holder
- rod
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
-
- 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
- H01H13/02—Details
- H01H13/023—Light-emitting indicators
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Push-Button Switches (AREA)
Abstract
877,053. Press-button retractive switches; indicators for switches. IGRANIC ELECTRIC CO. Ltd. Nov. 25, 1957 [Feb. 19, 1957], No. 36635/57. Class 38 (5). A pilot light is combined with a change-over switch such that manual pressure on the lens unit 62 operates the switch to energize the lamp for the purpose of testing its condition. In the embodiment shown, a transformer 36 with insulating base 31 is clamped between a switch unit 38 and a member 56 by two screws 48, 49 which enter tapped holes in member 56. The assembly is mounted on a panel 63 by means of a threaded ring 64 which engages an upstanding threaded part of member 56; a cork gasket 65 provides a liquid-tight seal. A lamp holder 51 is fitted on the upper casing of transformer 36. A lens holder 57 is slidable in member 56 against the action of a spring 58 located between a shoulder on holder 57 and an internal flange 56e in member 56. A metal washer 61 is secured to the lower end of holder 57 and acts as a back stop against flange 56e. A synthetic rubber sealing ring 59 is located in a groove in holder 57. Openings near the base of members 56 and 64 allow any liquid that may penetrate the seal to drain away when panel 63 is vertical. A push-rod 39 extends from lens holder 57 through part 31 into the switch unit 38 where it engages one end of a pivoted brass contact bridge 75 which is biased by a spring 74 so as normally to bridge contacts 76 and 77 (see Fig. 9). On depression of the lens holder 57, the rod 39 causes bridge 75 to leave contact 77 and interconnect contacts 76 and 78, putting the primary of transformer 36 directly across the supply and lighting low voltage lamp 52 which is connected to the transformer secondary (Fig. 4, not shown). In an alternative embodiment (Figs. 14 to 22, not shown), a relatively high voltage lamp is used, the transformer 36 being replaced by a dropping resistor, and the lens holder is modified to accommodate the larger lamp, but the same switch unit operated by a push-rod is retained.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US877053XA | 1957-02-19 | 1957-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB877053A true GB877053A (en) | 1961-09-13 |
Family
ID=22206777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36635/57A Expired GB877053A (en) | 1957-02-19 | 1957-11-25 | Improvements in or relating to combined electrical indicating and switching devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB877053A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3231706A (en) * | 1961-07-24 | 1966-01-25 | Cutler Hammer Inc | Illuminated pushbutton switches having tanden lamp impedance devices |
DE1279806B (en) * | 1962-03-12 | 1968-10-10 | Mackworth G Rees Division Of A | Electric push-pull switch with lamp |
GB2120852A (en) * | 1982-04-17 | 1983-12-07 | Ddm Hopt & Schuler Gmbh And Co | A switch for installation in assembly panels |
-
1957
- 1957-11-25 GB GB36635/57A patent/GB877053A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3231706A (en) * | 1961-07-24 | 1966-01-25 | Cutler Hammer Inc | Illuminated pushbutton switches having tanden lamp impedance devices |
DE1279806B (en) * | 1962-03-12 | 1968-10-10 | Mackworth G Rees Division Of A | Electric push-pull switch with lamp |
GB2120852A (en) * | 1982-04-17 | 1983-12-07 | Ddm Hopt & Schuler Gmbh And Co | A switch for installation in assembly panels |
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