GB797430A - A ship's lantern - Google Patents
A ship's lanternInfo
- Publication number
- GB797430A GB797430A GB8523/55A GB852355A GB797430A GB 797430 A GB797430 A GB 797430A GB 8523/55 A GB8523/55 A GB 8523/55A GB 852355 A GB852355 A GB 852355A GB 797430 A GB797430 A GB 797430A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- lever
- platform
- bulb
- plug
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
797,430. Ships' lanterns. CARLANDER, J., and ELDOY, S. March 23, 1955 [March 24, 1954], No. 8523/55. Class 75(4) In a ship's lantern having a reserve bulb adapted to be energized when a main bulb fails and in which both bulbs are mounted on a spring actuated platform 4 held in a normal position with the main bulb at the axis of the lantern by a releasable locking device and adapted to be moved by the spring, when the locking device is released, to replace the main bulb by the reserve bulb, the releasable locking device is actuated by a plug 16 containing a heating coil and a metal which melts when the coil is energized by an electric current. The main bulb is disposed in a holder 5 and the reserve bulb in a holder 6. The platform 4 is mounted on the upper end of a shaft 2 rotatably mounted on a base plate 1. The spring for rotating the platform is contained in a box 3 secured to the shaft 2. The releasable locking device comprises a lever 11 urged by a weak spring 12 and having a shoulder 13 which in the normal position of the bulbs engages a pin 14 on the spring box 3. The free end of the lever 11 abuts an end of a rod 17 extending from the plug 16 and when the coil in the plug is energized by operation of a remote switch and the metal in the plug melts the rod is moved by a spring to disengage the lever 11 from the pin 14. The platform then rotates under the action of its spring until arrested by a shoulder on the platform abutting a member extending upwardly from the base plate. During rotation of the platform a cam on the shaft 2 operates a switch to energize the reserve bulb and de-energize the main bulb, and a second pin 20 on the spring box engages a second lever 19 connected by a link 18 to the first lever 11 and moves the first lever and the spring urged rod 17 back to their initial positions. The final position of the second pin 20 is a small distance beyond the axial plane at right angles to the second lever- 19. When the heating coil in the plug 16 is de-energized the metal therein solidifies to hold the rod in initial position. The platform is returned manually to initial position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO797430X | 1954-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB797430A true GB797430A (en) | 1958-07-02 |
Family
ID=19907073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8523/55A Expired GB797430A (en) | 1954-03-24 | 1955-03-23 | A ship's lantern |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB797430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3529147A (en) * | 1968-03-07 | 1970-09-15 | Bell & Howell Co | Lamp turret assembly with energizing and aligning device |
| FR2592705A1 (en) * | 1986-01-03 | 1987-07-10 | Gisman | Signalling device with a spare lamp, in particular for maritime beacons |
-
1955
- 1955-03-23 GB GB8523/55A patent/GB797430A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3529147A (en) * | 1968-03-07 | 1970-09-15 | Bell & Howell Co | Lamp turret assembly with energizing and aligning device |
| FR2592705A1 (en) * | 1986-01-03 | 1987-07-10 | Gisman | Signalling device with a spare lamp, in particular for maritime beacons |
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