GB309305A - Improvements in electric miners' lamps and the like - Google Patents
Improvements in electric miners' lamps and the likeInfo
- Publication number
- GB309305A GB309305A GB10141/28A GB1014128A GB309305A GB 309305 A GB309305 A GB 309305A GB 10141/28 A GB10141/28 A GB 10141/28A GB 1014128 A GB1014128 A GB 1014128A GB 309305 A GB309305 A GB 309305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- contact
- battery
- resistance
- arm
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
-
- 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
- F21V15/00—Protecting lighting devices from damage
- F21V15/02—Cages
-
- 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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
309,305. Leitner, H. April 4, 1928. Battery lamps.-In a miners' lamp an oilimmersed switch is used to prevent sparking at the contacts and is adapted to insert a resistance in the battery circuit in order to give a dim light of long duration. A cylindrical casing 1 is provided with a square recess and resilient buffers 7 for a battery 2, a cap 3 having locking mechanism 5, and an oil-tight container 8 for the switch mechanism. The battery poles 10 are connected respectively to a terminal 17 and a lamp contact through spring blades 9 housed in recesses 9<1> of the casing. A resistance 11 is supported between brackets 12 which are connected to contacts 13, 14. A contact-arm 16 pivoted at 17 enables the lamp 15 to be connected directly to the battery through the contact 13 or optionally to insert in series therewith the resistance 11 through the contact 14 or to switch the lamp off, as shown in Fig. 5. The contact-arm 16 is controlled externally by means of an arm 19 and attached spindle 20 passing through a stuffing box 21. An additional lamp or a secondary filament in the main lamp may be used as a resistance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10141/28A GB309305A (en) | 1928-04-04 | 1928-04-04 | Improvements in electric miners' lamps and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10141/28A GB309305A (en) | 1928-04-04 | 1928-04-04 | Improvements in electric miners' lamps and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB309305A true GB309305A (en) | 1929-04-11 |
Family
ID=9962252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10141/28A Expired GB309305A (en) | 1928-04-04 | 1928-04-04 | Improvements in electric miners' lamps and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB309305A (en) |
-
1928
- 1928-04-04 GB GB10141/28A patent/GB309305A/en not_active Expired
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