GB478368A - Improvements in or relating to the manufacture of electric discharge devices - Google Patents
Improvements in or relating to the manufacture of electric discharge devicesInfo
- Publication number
- GB478368A GB478368A GB20178/36A GB2017836A GB478368A GB 478368 A GB478368 A GB 478368A GB 20178/36 A GB20178/36 A GB 20178/36A GB 2017836 A GB2017836 A GB 2017836A GB 478368 A GB478368 A GB 478368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- arm
- electrodes
- face
- manufacture
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
478,368. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., and RYDE, J. W. (Patent-Treuhand Ges. f³r Electrische Gl³hlampen) July 21, 1936, Nos. 20178/36 and 13132/37. [Class 39 (i)] In the manufacture of discharge devices of the kind in which the distance between the electrodes has to be adj u s t e d accurately, such as the high pressure lamp shown, a leading-in conductor 2 carrying an electrode 1 is provided with an arm 4 ending in a face 5 spaced at the desired inter-electrode distance from the electrode 1, and during sealing the other electrode 1<1> is kept in contact with face 5, the arm being finally removed from the neighbourhood of the electrodes. The electrode 1 may be sealed in the quartz envelope 7 before or after the electrode 1<1>. The arm may be of glass sealed to the bead 3, when it may be broken off by a wire 11 passing through the exhaust tube. If the arm is of metal it may merely be bent aside and may then act at a starting electrode. Absolute contact of the face 5 and electrode 11 is not necessary, as greater accuracy may be obtainable by leaving a gap so that light can just be seen between them. A dome 13 collects matter evaporated from the electrodes.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP71723D DE646241C (en) | 1935-08-29 | 1935-08-29 | Electric mercury vapor discharge lamp with a noble gas base filling, the operating vapor pressure of which is more than 20 atmospheres |
| DE2135734X | 1936-09-15 | ||
| GB2605836A GB476833A (en) | 1936-09-25 | 1936-09-25 | Improvements in or relating to high-pressure metal-vapour electric discharge lamps |
| DE2135661X | 1937-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB478368A true GB478368A (en) | 1938-01-18 |
Family
ID=32045958
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24877/35A Expired GB456608A (en) | 1935-08-29 | 1935-09-06 | Improvements in or relating to electric discharge devices |
| GB2045/36A Expired GB468643A (en) | 1935-08-29 | 1936-01-22 | Improvements in or relating to extra-high-pressure metal vapour electric discharge devices |
| GB20178/36A Expired GB478368A (en) | 1935-08-29 | 1936-07-21 | Improvements in or relating to the manufacture of electric discharge devices |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24877/35A Expired GB456608A (en) | 1935-08-29 | 1935-09-06 | Improvements in or relating to electric discharge devices |
| GB2045/36A Expired GB468643A (en) | 1935-08-29 | 1936-01-22 | Improvements in or relating to extra-high-pressure metal vapour electric discharge devices |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US2103041A (en) |
| DE (1) | DE646241C (en) |
| FR (2) | FR810098A (en) |
| GB (3) | GB456608A (en) |
| NL (1) | NL48532C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875687C (en) * | 1938-10-05 | 1953-05-04 | Electricitaets Ges Sanitas M B | Arrangement for operating a high-pressure mercury vapor lamp with a basic gas filling, non-activated incandescent cathodes heated by the discharge and an elongated arc |
| US2567491A (en) * | 1943-12-29 | 1951-09-11 | Mitchell John Wesley | Luminous discharge tube |
| US2545884A (en) * | 1946-01-18 | 1951-03-20 | Gen Electric | High-pressure mercury vapor electric discharge lamp |
| US2518944A (en) * | 1948-02-13 | 1950-08-15 | Gen Electric | Electric discharge device seal |
| US2716713A (en) * | 1950-03-22 | 1955-08-30 | Gen Electric | Cold electrode pulse lamp structure |
| US2707247A (en) * | 1951-06-05 | 1955-04-26 | Hanovia Chemical & Mfg Co | Vapor electric discharge lamp |
| GB835183A (en) * | 1957-05-07 | 1960-05-18 | Philips Electrical Ind Ltd | Improvements in or relating to low-pressure mercury vapour discharge tubes |
| US2939985A (en) * | 1957-10-09 | 1960-06-07 | Philips Corp | Low-pressure mercury vapour discharge tube |
| US3219870A (en) * | 1963-06-14 | 1965-11-23 | Gen Electric | High pressure discharge lamps seal and base |
| US3293493A (en) * | 1963-09-25 | 1966-12-20 | Gen Electric | Light source for color synthesis |
| US4202999A (en) * | 1978-04-11 | 1980-05-13 | General Electric Company | Fused silica lamp envelope and seal |
| DE2833896A1 (en) * | 1978-08-02 | 1980-02-21 | Patra Patent Treuhand | MELTING DOWN FOR ELECTRIC LAMPS |
| GB2105904B (en) * | 1981-09-04 | 1985-10-23 | Emi Plc Thorn | High pressure discharge lamps |
| US5312472A (en) * | 1992-09-23 | 1994-05-17 | Spectra-Physics Lasers, Inc. | Method for manufacturing resonant cavity for laser |
-
1935
- 1935-08-29 DE DEP71723D patent/DE646241C/en not_active Expired
- 1935-09-06 GB GB24877/35A patent/GB456608A/en not_active Expired
-
1936
- 1936-01-22 GB GB2045/36A patent/GB468643A/en not_active Expired
- 1936-07-21 GB GB20178/36A patent/GB478368A/en not_active Expired
- 1936-08-06 FR FR810098D patent/FR810098A/en not_active Expired
- 1936-08-10 NL NL78875A patent/NL48532C/xx active
- 1936-08-21 US US97278A patent/US2103041A/en not_active Expired - Lifetime
-
1937
- 1937-01-11 US US120066A patent/US2135661A/en not_active Expired - Lifetime
- 1937-09-13 US US163700A patent/US2135734A/en not_active Expired - Lifetime
- 1937-09-15 FR FR48790D patent/FR48790E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE646241C (en) | 1937-06-14 |
| FR48790E (en) | 1938-06-23 |
| US2135734A (en) | 1938-11-08 |
| US2135661A (en) | 1938-11-08 |
| NL48532C (en) | 1940-06-15 |
| GB468643A (en) | 1937-07-09 |
| US2103041A (en) | 1937-12-21 |
| GB456608A (en) | 1936-11-12 |
| FR810098A (en) | 1937-03-15 |
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