GB346739A - Improvements relating to miner's lamps - Google Patents
Improvements relating to miner's lampsInfo
- Publication number
- GB346739A GB346739A GB31036/29A GB3103629A GB346739A GB 346739 A GB346739 A GB 346739A GB 31036/29 A GB31036/29 A GB 31036/29A GB 3103629 A GB3103629 A GB 3103629A GB 346739 A GB346739 A GB 346739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- membrane
- lamps
- bell
- bulb
- liquid
- 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
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- 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
- 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
- F21V25/06—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken feeding a quenching fluid to the light source
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
346,739. Miners' electric lamps. DALOZ, J. G., 49, Rue du 22 Septembre, Courbevoie, Seine, France. Oct. 12, 1929, No. 31036. Convention date, Nov. 8, 1928. Void [Published under Sect. 91 of the Acts]. Addition to 316,281, [Class 39 (ii), Electric lamps, Incandescent]. [Class 39 (ii).] Battery lamps; bulbs.-In miners' lamps according to the parent Specification, the bell is filled with liquid which is prevented from contacting with conducting parts so as to avoid electrolytic deterioration of the elastic membrane. The bulb g may have a rim g<2> over which the edge f<2> of the membrane f engages, or this edge may engage over a glass or other insulating ring placed over the bulb before the bulb is introduced into the socket. In assembling the lamp, sufficient liquid is introduced into the bell, with the membrane f projecting therefrom, to fill the bell when the membrane is pushed into the position shown, the liquid pressure thus keeping the circuit closed at j<2> against the action of the spring k.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE346739X | 1928-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB346739A true GB346739A (en) | 1931-04-15 |
Family
ID=3868128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31036/29A Expired GB346739A (en) | 1928-11-08 | 1929-10-12 | Improvements relating to miner's lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB346739A (en) |
-
1929
- 1929-10-12 GB GB31036/29A patent/GB346739A/en not_active Expired
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