GB313727A - Improvements in or relating to electric discharge devices for producing ultra violetradiation - Google Patents
Improvements in or relating to electric discharge devices for producing ultra violetradiationInfo
- Publication number
- GB313727A GB313727A GB1498128A GB1498128A GB313727A GB 313727 A GB313727 A GB 313727A GB 1498128 A GB1498128 A GB 1498128A GB 1498128 A GB1498128 A GB 1498128A GB 313727 A GB313727 A GB 313727A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- electrode
- mercury
- discharge
- electrodes
- 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
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
313,727. Freedman, P. May 22, 1928. Low - pressure metallic - vapour apparatus; vacuum tubes.-In discharge lamps for producing ultra-violet radiation and either of the kind having a mercury or other vaporizable electrode or in which the discharge passes through permanent gases only, the leads to the several electrodes are brought through one common stem in which the leading-in wires are sealed. The lamp shown in Fig. 1 has two mercury electrodes 10, 11, the leads being brought through a single stem 7. The lead to the electrode 11 is insulated from the mercury pool 10 by a glass tube 12 integral with the stem, and from the arc discharge by a chain of interfitting conical beads 13 of porcelain &c. Fig. 3 shows a lamp as described in Specification 313,726 with a modified starting- device, the auxiliary electrode of which consists of a metal chain or flexible conductor 32 kept in a fixed position with respect to the mercury pool by means of an insulating float 33. The lamp shown in Fig. 4 is started by an auxiliary discharge between pointed wires 44, 45 which is caused by resistances 46, 47 to be short-circuited when the main arc strikes. Fig. 5 shows a lamp similar to that shown in Fig. 1, but having a solid electrode at the sealed end. A similar lamp is described (Fig. 6, not shown) with solid electrodes at both ends. Some of the conductors or resistances may be operated at a high temperature as described in Specification 313,726.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1498128A GB313727A (en) | 1928-05-22 | 1928-05-22 | Improvements in or relating to electric discharge devices for producing ultra violetradiation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1498128A GB313727A (en) | 1928-05-22 | 1928-05-22 | Improvements in or relating to electric discharge devices for producing ultra violetradiation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB313727A true GB313727A (en) | 1929-06-20 |
Family
ID=10050952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1498128A Expired GB313727A (en) | 1928-05-22 | 1928-05-22 | Improvements in or relating to electric discharge devices for producing ultra violetradiation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB313727A (en) |
-
1928
- 1928-05-22 GB GB1498128A patent/GB313727A/en not_active Expired
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