GB661083A - Improvements in electric lighting control apparatus - Google Patents
Improvements in electric lighting control apparatusInfo
- Publication number
- GB661083A GB661083A GB14226/47A GB1422647A GB661083A GB 661083 A GB661083 A GB 661083A GB 14226/47 A GB14226/47 A GB 14226/47A GB 1422647 A GB1422647 A GB 1422647A GB 661083 A GB661083 A GB 661083A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- dimmer
- plates
- shaft
- clutch
- 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
- H05B47/155—Coordinated control of two or more light sources
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
661,083. Control systems for theatre &c. lighting. WILLIAMS, R. G. May 26, 1948 [May 28, 1947], No. 14226/47. Class 38 (iv). Relates to electric clutch-control arrangements in a stage lighting or like illumination control system in which means are provided for automatically clutching an element for moving the dimmer to an operating member, such as a shaft rotatable in one direction, and for automatically declutching the element when the operating member has moved the dimmer to a predetermined position. In the arrangement shown in Figs. 1-4, dimmers 1A-1D controlling separate lighting circuits are manually set by handles 14a-14d loosely pivoted to a shaft 6 and connected to the dimmers by links 4a-4d which move the dimmers through rack-and-pinion drives, such as 2a, 3a, Fig. 2. Each handle carries electromagnetic clutch windings 12b, 13b, Fig. 3, whereby the handle may be selectively coupled to either of two discs 6b, 7b which turn in opposite directions on rotation of the shaft 6. The energization of the clutches is determined by programme contact plates such as 15a, 16a, carried by a base 18 and co-operating with a spring-loaded contact, such as 26a, which is moved about a pivot 22a upon movement of the dimmer with which it is associated. The contact plates are separated by a gap 17a and are each connected to a different clutch winding so that one of the pair of windings is energized over contact 26a so long as the last engages either of the plates 15a, 16a. In consequence, rotation of shaft 6 will move the dimmer in such a direction as to cause contact 26a to move towards the gap 17a. On reaching the gap the contact opens the clutch energizing circuit and further rotation of the shaft is without effect on the dimmer. A pair of contact plates and associated dimmercontrolled contact is provided for each dimmer. Manual control of any dimmer may be obtained by pressing switch buttons 47a-47d on the handles 14a-14d to open the clutch winding circuits. The base 18 carries all the contact plates of the several dimmers and may be rocked laterally and longitudinally of the dimmer-controlled contacts to provide for different programmes. Instead of continuous contact plates, each pair may be divided laterally into a number of sections each comprising two cylindrical surfaces 53, 54, separated by a helical slot, as shown in Fig. 9. The surfaces are carried by a cone 59, the whole being capable of angular adjustment in bearings 57. Linkwork may be arranged between the pivot 22a and contact 26a to impart reciprocating, rather than oscillatory motion to the contact. In a modified arrangement, Fig. 14, the pair of contact plates and their co-operating moving contact are replaced by an assembly of cooperating contacts 93-95 which are moved bodily by the dimmer over a programme plate comprising surfaces 97, 98 at different levels are connected by an inclined surface 96. An insulating pin 90 carried by contact 93 bears on the surfaces and when on the inclined surface causes this contact to be clear of both the other contacts so that neither clutch winding is then energized and movement of the dimmer is arrested. A complete control apparatus utilizing this form of programme plate and including automatic means for laterally moving the programme plates in accordance with a pre-set lighting plot is described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB14226/47A GB661083A (en) | 1947-05-28 | 1947-05-28 | Improvements in electric lighting control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB14226/47A GB661083A (en) | 1947-05-28 | 1947-05-28 | Improvements in electric lighting control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB661083A true GB661083A (en) | 1951-11-14 |
Family
ID=10037326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14226/47A Expired GB661083A (en) | 1947-05-28 | 1947-05-28 | Improvements in electric lighting control apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB661083A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7659674B2 (en) | 1997-08-26 | 2010-02-09 | Philips Solid-State Lighting Solutions, Inc. | Wireless lighting control methods and apparatus |
US7959320B2 (en) | 1999-11-18 | 2011-06-14 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for generating and modulating white light illumination conditions |
-
1947
- 1947-05-28 GB GB14226/47A patent/GB661083A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7659674B2 (en) | 1997-08-26 | 2010-02-09 | Philips Solid-State Lighting Solutions, Inc. | Wireless lighting control methods and apparatus |
US7959320B2 (en) | 1999-11-18 | 2011-06-14 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for generating and modulating white light illumination conditions |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2276930A (en) | Oven heating system | |
US2201118A (en) | Transmission of power | |
GB661083A (en) | Improvements in electric lighting control apparatus | |
US1575010A (en) | Limit switch | |
US1522988A (en) | Time switch | |
US2517079A (en) | Control mechanism | |
US2872535A (en) | Circuit regulating and control mechanism | |
US2103334A (en) | Means for dimming radio lights | |
GB357439A (en) | Improvements in and relating to electric time switches particularly for x-ray apparatus | |
US2136322A (en) | Fire protecting device with film projectors in cinemas | |
US1932040A (en) | Method of and apparatus for controlling electrical devices | |
US1953435A (en) | Radio device for operating radio receiving sets | |
JPS5735224A (en) | Control apparatus for heat-cooking appliance | |
US3025446A (en) | Controlling motor for mechanical setting of regulating members in regulating systems | |
ES2064028T3 (en) | CONTROL DEVICE FOR A MICROWAVE OVEN. | |
US2802144A (en) | Apparatus and method for controlling camera keylights | |
US1981707A (en) | Thermostatic control system | |
US2114068A (en) | Automatic electrical radio broadcast and wave selector | |
US2729752A (en) | Illumination control | |
US2753968A (en) | Rotating remote control devices | |
US3491861A (en) | Control circuit for clutch and motor | |
US1559389A (en) | Apparatus for controlling electric circuits | |
GB492314A (en) | Means for controlling electric motor or other electric circuits | |
US1533283A (en) | Automatic thermal control system | |
GB822036A (en) | An arrangement for adjustment of stage lighting |