GB489255A - Improvements in or relating to electric lamps - Google Patents
Improvements in or relating to electric lampsInfo
- Publication number
- GB489255A GB489255A GB28734/37A GB2873437A GB489255A GB 489255 A GB489255 A GB 489255A GB 28734/37 A GB28734/37 A GB 28734/37A GB 2873437 A GB2873437 A GB 2873437A GB 489255 A GB489255 A GB 489255A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flexible
- wire
- cap
- insulated
- contact
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
489,255. Two -part couplings ; electric incandescent lamps. BIRDSEYE ELECTRIC CORPORATION. Oct. 21, 1937, No. 28734. Convention date, Nov. 2, 1936. [Class 38 (i)] [Also in Group XI] In order to enable an electric lamp to be given any desired angular adjustment with respect to the socket in which it is mounted, its metal cap or base is provided with a flexible corrugated intermediate portion 21 between the usual screw-threaded socket-engaging portion 20 and the sleeve portion 22 which is cemented to the glass neck of the bulb. A portion of the leading-in wire 14 between the pinch 12 and centre contact 25 of the cap is wound into the form of a loose helix or, spring to allow for extension when the base is flexed and, to prevent contact between the leading- in wire and the inner wall of the cap, the wire is insulated by beads or by a sleeve 24 of ceramic material, asbestos, glass, or the like. Contact may be further prevented by passing the insulated lead through an aperture in a fibre washer which is threaded upon the exhausting-tube 17 and acts as a spacer. The flexible bellows portion 21 may be formed of copper, and may be coated with insulating varnish; alternatively the flexible portion may comprise a helix of flexible non-resilient wire. In a further modification the flexible portion of the'cap is'insulated from the screwthreaded portion by a ring of fibre or the like to which they are both riveted independently.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US108786A US2067844A (en) | 1936-11-02 | 1936-11-02 | Adjustable electric lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB489255A true GB489255A (en) | 1938-07-22 |
Family
ID=22324032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28734/37A Expired GB489255A (en) | 1936-11-02 | 1937-10-21 | Improvements in or relating to electric lamps |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2067844A (en) |
| GB (1) | GB489255A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2901654A (en) * | 1955-03-16 | 1959-08-25 | Scarborough Associates Inc | Reflecting electric lamp |
| US3469140A (en) * | 1967-02-13 | 1969-09-23 | Westinghouse Electric Corp | Single-ended electric incandescent lamp with improved base and terminal structure,and method of assembly |
| JPH0216540Y2 (en) * | 1986-11-29 | 1990-05-08 | ||
| CA2684301A1 (en) * | 2009-11-03 | 2011-05-03 | Wayne Ernest Conrad | Led light bulb |
-
1936
- 1936-11-02 US US108786A patent/US2067844A/en not_active Expired - Lifetime
-
1937
- 1937-10-21 GB GB28734/37A patent/GB489255A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2067844A (en) | 1937-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB415308A (en) | Improvements in and relating to bases for electric incandescent lamps | |
| GB489255A (en) | Improvements in or relating to electric lamps | |
| GB655662A (en) | Improvements in and relating to electric lamps and to base structures therefor | |
| US1869998A (en) | Incandescent lamp | |
| US1998958A (en) | Connection for filament and lead wires | |
| GB751537A (en) | Improvements in or relating to electric incandescent lamps or discharge tubes | |
| GB429886A (en) | Improvements in and relating to electric lamps | |
| GB452191A (en) | Improvements in and relating to electric lamps | |
| US1644002A (en) | Means and method of exhausting electrical bulbs | |
| GB503462A (en) | Cap for electric incandescent lamps | |
| GB605649A (en) | Improvements in electric incandescent lamps | |
| GB678037A (en) | Improved mount structure for electric incandescent lamps | |
| GB506287A (en) | Improvements in and relating to electric discharge tubes | |
| GB191109815A (en) | Electric Incandescent Lamp. | |
| GB614814A (en) | Improvements in electric incandescent lamps | |
| GB191010874A (en) | Improvements in and relating to the Manufacture of Incandescent Electric Lamps. | |
| GB455842A (en) | Improvements in or relating to miner's electric lamp bulbs | |
| GB491073A (en) | Improvements in electric incandescent lamps | |
| GB429364A (en) | Improvements in or relating to electric lamps and the like | |
| GB443713A (en) | Improvements in electric incandescent lamps | |
| GB499120A (en) | Improvements in and relating to electric lamps | |
| GB432354A (en) | Improvements in or relating to incandescent electric lamps | |
| GB392126A (en) | Improvements in and relating to caps for electric incandescent lamps | |
| GB379090A (en) | Improvements in or relating to thermionic valve holders | |
| GB483629A (en) | Improvements in negative glow electric discharge lamps |