GB453268A - Improvements in or relating to portable electric lamps - Google Patents
Improvements in or relating to portable electric lampsInfo
- Publication number
- GB453268A GB453268A GB1170836A GB1170836A GB453268A GB 453268 A GB453268 A GB 453268A GB 1170836 A GB1170836 A GB 1170836A GB 1170836 A GB1170836 A GB 1170836A GB 453268 A GB453268 A GB 453268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fingers
- reflector
- bulb
- depressions
- engage
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
453,268. Two-part couplings. MAURICE, W., Park Grange, and WOLF SAFETY LAMP (HIRING) CO., Ltd., Saxon Road, both in Sheffield. April 24, 1936, No. 11708. [Class 38 (i)] [See also Group XI] In a portable electric lamp, spring finger contacts g extend through slots h in a reflector i and carry a tubular bulb e, the fingers g being insulated against accidental contact with the reflector at the sides and back as at m, but only partially at the front, as at m<1>, so that the fingers will engage the reflector when a bulb is not in position. By this means a short circuit fuses a cartridge on the battery and, should the front glass be broken, the risk of igniting fire-damp is eliminated. Also, external sparking is prevented as the fingers cannot touch metal on any of the other three sides of either slot. The insulation m, m<1> may be secured to the fingers by moulding or riveting. The conical ends of the contact caps f of the bulb engage in any one of a number of pairs of depressions j formed in the fingers, the caps preferably being fitted with small pins l adapted to enter small apertures k in the depressions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1170836A GB453268A (en) | 1936-04-24 | 1936-04-24 | Improvements in or relating to portable electric lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1170836A GB453268A (en) | 1936-04-24 | 1936-04-24 | Improvements in or relating to portable electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB453268A true GB453268A (en) | 1936-09-08 |
Family
ID=9991223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1170836A Expired GB453268A (en) | 1936-04-24 | 1936-04-24 | Improvements in or relating to portable electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB453268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321615A (en) * | 1965-02-23 | 1967-05-23 | Hilzen Hy | Electrical lighting apparatus |
-
1936
- 1936-04-24 GB GB1170836A patent/GB453268A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321615A (en) * | 1965-02-23 | 1967-05-23 | Hilzen Hy | Electrical lighting apparatus |
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