GB291704A - Improvements in electric dimmer switches - Google Patents
Improvements in electric dimmer switchesInfo
- Publication number
- GB291704A GB291704A GB760/28A GB76028A GB291704A GB 291704 A GB291704 A GB 291704A GB 760/28 A GB760/28 A GB 760/28A GB 76028 A GB76028 A GB 76028A GB 291704 A GB291704 A GB 291704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- couplings
- resistance
- panel
- terminal
- socket
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Slide Switches (AREA)
Abstract
291,704. Row, W. Jan. 9, 1928. Two-part couplings combined with resistances.-In a switch for dimming theatre lamps a base-panel 2 supports a movable contact-arm 5, stationary switch-contacts 3, and resistance-elements 11 which are fitted so as to be easily detachable and replaceable. Each element consists of a helically grooved insulating tube 18 with the resistance wire wound in the groove. Several modifications of the resistance terminal couplings are described. Plain plug- and-socket couplings with the sockets mounted in the panel and integrally attached to screw terminal shanks are shown in Fig. 2. Plugs fitting into positioning sockets 10 and centrally tapped to receive screwed-in terminal shanks 24 are shown in Fig. 3. Both the above kinds of couplings may be mounted in pairs, one on each side of the panel, with a common terminal shank 24, as shown in Fig. 4. In further modifications the resistance element carries the socket which fits over a plain plug, or is tapped to'receive a projecting screwed shank.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB760/28A GB291704A (en) | 1928-01-09 | 1928-01-09 | Improvements in electric dimmer switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB760/28A GB291704A (en) | 1928-01-09 | 1928-01-09 | Improvements in electric dimmer switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB291704A true GB291704A (en) | 1928-06-07 |
Family
ID=31898036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB760/28A Expired GB291704A (en) | 1928-01-09 | 1928-01-09 | Improvements in electric dimmer switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB291704A (en) |
-
1928
- 1928-01-09 GB GB760/28A patent/GB291704A/en not_active Expired
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