GB801325A - Contact or runway light - Google Patents
Contact or runway lightInfo
- Publication number
- GB801325A GB801325A GB1060156A GB1060156A GB801325A GB 801325 A GB801325 A GB 801325A GB 1060156 A GB1060156 A GB 1060156A GB 1060156 A GB1060156 A GB 1060156A GB 801325 A GB801325 A GB 801325A
- Authority
- GB
- United Kingdom
- Prior art keywords
- actuator
- light
- lens
- lamp
- filament
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/18—Visual or acoustic landing aids
- B64F1/20—Arrangement of optical beacons
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
801,325. Air-port runway marker lights: supporting lamps. McGRAW ELECTRIC CO. April 6, 1956, No. 10601/56. Classes 75(3) and 75(4) In a marker light for an airport runway including a filament light source, means for controlling the current through the filament and a lens having a focusing portion for projecting a light signal in a predetermined direction relative to the geometrical axis of the lens, in order to restore along the centre line of the runway a path, for a pilot, of equal brightness destroyed by variations in atmospheric conditions produced e.g. by fog and necessitating an increased intensity of the light source, the light source and the lens are arranged for relative movement transversely of said geometrical axis for projecting the light signal in a predetermined direction with respect to the runway at a predetermined light intensity of the source under the control of means responsive to variation in filament current. Preferably the light source is movable tranversely of the said geometrical axis under the control directly of the filament current as by a bi-metallic actuator heated by the filament current, Figs. 1-3, or a current proportional thereto flowing either through the ohmic resistance of the actuator or through a heating coil, Fig. 6 (not shown), or by the heat energy radiated by the source, Fig. 5 (not shown), or by an actuator such as a bellows-chamber filled with a thermally expansible fluid heated by the filament current, Fig. 7 (not shown), or a current proportional thereto or by an electromagnetic actuator such as a rotary solenoid or a D'Arsonval moving coil ammeter type of instrument. Figs. 8 and 9 (not shown). As shown in Figs. 1 and 3, a cast housing 1 supported by a vertical support 2 projecting from a base 3 carries the lens structure 5 comprising a bull's eye portion surrounded by inner and outer reflecting prisms 6, 7 and is provided with a door 8, Fig. 3, pivoted at one side on trunnions 9 and secured at the opposite side by a latching clamp 10. The housing is positioned on a slip-fitter 11 to permit levelling the projector with reference to the runway and/or remaining projectors of a selected series as by the screws 12, 13 operating with relation to the fulcrum 14. The lamp 25 is mounted in a U-shaped cradle 26, Fig. 1, pivotally supported from trunnions 22, 23 of a frame having a base 20 supported by nut and stud assemblies 24 for adjusting the mechanism vertically relative to the lens 5. A helically wound bimetal strip actuator 35 with the highexpansion metal on the outside has one end secured to a pivot pin 36 projecting from the limb 27 of the cradle 26 and extending through an opening in trunnion 22. The other end of the actuator 35 is fastened to the free inner end of a spirallyformed bimetallic compensator 37, with the high-expansion metal on the inside of the spiral which compensates for variations in ambient temperatures by reindexing the stable end of the actuator 35. The other end of the compensator 37 is secured to an insulating member 38 projecting from the base 20. The actuator 35 is connected electrically in series with the lamp filament to give a functional relationship between movement of the lamp with respect to the lens and the current supplied to the lamp. Upper reflectors 42, 43 having a generally concave cross-section direct light upwardly from the lamp to the lens 5 and a lower reflector 44 collects light rays which would otherwise fall on the control mechanism and reflects that light towards the lenses on either side of the lamp. A reflector 45 reflects light away from the door 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1060156A GB801325A (en) | 1956-04-06 | 1956-04-06 | Contact or runway light |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1060156A GB801325A (en) | 1956-04-06 | 1956-04-06 | Contact or runway light |
Publications (1)
Publication Number | Publication Date |
---|---|
GB801325A true GB801325A (en) | 1958-09-10 |
Family
ID=9970852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1060156A Expired GB801325A (en) | 1956-04-06 | 1956-04-06 | Contact or runway light |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB801325A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005091382A1 (en) * | 2004-03-18 | 2005-09-29 | Siemens Aktiengesellschaft | Light source for an image-generating unit |
-
1956
- 1956-04-06 GB GB1060156A patent/GB801325A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005091382A1 (en) * | 2004-03-18 | 2005-09-29 | Siemens Aktiengesellschaft | Light source for an image-generating unit |
US7465064B2 (en) | 2004-03-18 | 2008-12-16 | Siemens Aktiengesellschaft | Light source for an image-generating unit |
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