GB873422A - Improvements in or relating to portable electric lamps - Google Patents
Improvements in or relating to portable electric lampsInfo
- Publication number
- GB873422A GB873422A GB536760A GB536760A GB873422A GB 873422 A GB873422 A GB 873422A GB 536760 A GB536760 A GB 536760A GB 536760 A GB536760 A GB 536760A GB 873422 A GB873422 A GB 873422A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- filament
- lamp
- circuit
- electric
- 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
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
Abstract
873,422. Miners' electric lamps. KOEHLER MANUFACTURING CO. Feb. 15, 1960, No. 5367/60. Class 75(4). In a miner's electric lamp of the type having a headpiece containing a tubular lamp socket, a reflector slidably mounted thereon by means of a hub portion having a toothed rack so that the reflector can be moved for focusing by an external operating means, the operating means is also coupled to a rotatable switch member for closing the circuit to the lamp filament from an electric conductor means connected to a source of electric current. The lamp may have two filaments which are alternatively connected in different positions of the switch member. The headpiece may be attached e.g. to the miner's cap and the battery secured e.g. around his waist. In the form shown, the bulb 20, Fig. 2, has filaments 20a, 20b connected respectively to contacts 22, 24 and is mounted in a sleeve on which slides a tubular member 30 carrying the reflector 26. A rack 34 on the member 30 engages a pinion 36 on a shaft 38 connected to an external operating knob so that the reflector can be moved to bring either filament into focus. The contacts 22, 24, Fig. 4, have elongated ends which co-operate with an arm 42 mounted on the shaft 38 to close the circuit of the appropriate filament according to the position of the reflector, the elongated ends allowing a period of travel of the reftector while the filament is in circuit so that the spread of the light beam can be varied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB536760A GB873422A (en) | 1960-02-15 | 1960-02-15 | Improvements in or relating to portable electric lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB536760A GB873422A (en) | 1960-02-15 | 1960-02-15 | Improvements in or relating to portable electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB873422A true GB873422A (en) | 1961-07-26 |
Family
ID=9794771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB536760A Expired GB873422A (en) | 1960-02-15 | 1960-02-15 | Improvements in or relating to portable electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB873422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2336629A1 (en) * | 1975-12-22 | 1977-07-22 | Oldham Et Son Ltd | PORTABLE ELECTRIC LAMP WITH SPOTLIGHT AND DIFFUSED LIGHT, ESPECIALLY FOR MINORS |
| US4533984A (en) * | 1982-09-07 | 1985-08-06 | Gatton James W | Variable-width-beam light apparatus |
-
1960
- 1960-02-15 GB GB536760A patent/GB873422A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2336629A1 (en) * | 1975-12-22 | 1977-07-22 | Oldham Et Son Ltd | PORTABLE ELECTRIC LAMP WITH SPOTLIGHT AND DIFFUSED LIGHT, ESPECIALLY FOR MINORS |
| US4533984A (en) * | 1982-09-07 | 1985-08-06 | Gatton James W | Variable-width-beam light apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2726321A (en) | Flashlights | |
| GB873422A (en) | Improvements in or relating to portable electric lamps | |
| US2915744A (en) | Flashlights | |
| US3003057A (en) | Portable electric lanterns or torches and switching devices therefor | |
| GB898236A (en) | Electric pointer | |
| GB884212A (en) | Improvements in or relating to electric torches | |
| US2080583A (en) | Flashlight | |
| GB794452A (en) | Improvements in or relating to flashlights | |
| GB1048528A (en) | Lantern | |
| GB819915A (en) | An electric torch | |
| ES103588U (en) | Flashing light device with flashlight (Machine-translation by Google Translate, not legally binding) | |
| GB1069475A (en) | Interior automobile light fitting | |
| GB536423A (en) | Improvements in walking sticks and the like | |
| ES208180U (en) | Table lamp (Machine-translation by Google Translate, not legally binding) | |
| GB893344A (en) | Improvements in or relating to electric torches | |
| GB881170A (en) | Improvements in or relating to battery-operated signalling lamps | |
| GB854077A (en) | Improvements in or relating to portable electric lanterns or torches and to switching devices therefor | |
| GB1091861A (en) | Portable electric torch | |
| ES104704U (en) | Luminous fist for umbrellas and similar (Machine-translation by Google Translate, not legally binding) | |
| GB551042A (en) | Improvements relating to electric signalling lamps | |
| ES234786U (en) | Simplified lantern. (Machine-translation by Google Translate, not legally binding) | |
| ES99563U (en) | Improved signaling lantern (Machine-translation by Google Translate, not legally binding) | |
| GB868504A (en) | Improvements in or relating to electric torches | |
| GB401953A (en) | Improvements in electric torches | |
| GB830221A (en) | Improvements in or relating to electric torches |