US1640443A - Electrical discharge device - Google Patents
Electrical discharge device Download PDFInfo
- Publication number
- US1640443A US1640443A US157030A US15703026A US1640443A US 1640443 A US1640443 A US 1640443A US 157030 A US157030 A US 157030A US 15703026 A US15703026 A US 15703026A US 1640443 A US1640443 A US 1640443A
- Authority
- US
- United States
- Prior art keywords
- mercury
- envelope
- starting
- discharge device
- electrical discharge
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
Definitions
- the present invention relates to the class of electric discharge devices which operate b ionization of gas or vapor and in'whlch tile initially high electric resistance must be broken down, as for example, by an auxiliary discharge, before a discharge will operate between the main electrodes at the normal operating potential. It is the object of my invention to provide an improved starting arrangement.
- these difiiculties are overcome by roviding in the envelo a small receptac e or cup suitably positioned with respect to the starting circuit and in which suflicient and definite amount of mercury may be introduced to positively complete the startingcircult, By properly proportioning and positioning this receptacle, the amount of mercury thus introduced into the starting circuit can be (I restricted to an amount which will not unduly delay the starting of the arc.
- FIG. 1 is a side view 0 my improved device prior to starting the arc (the main envelope being shown in part broken away) view of the device after operation.
- the device comprises an envelope 1 consisting of glass quartz or other suitable material. Sealed in Fig. 1 terminate in electrodes 6, '7 consist- .sequently the starting of the main discharge andFig. 2 is a side therein are stems or wires 2,3 consisting of tungsten, molybdenum or .other suitable metal.
- the ends 4:, 5 of these stems which preferably are reduced in section as shown ing of tungsten or other suitable refractory material, these electrodes being separated by a gap havingqa length of 15 to 500 mils, depending on t e character ofthe device.
- the space within the envelope may be evacuated or charged with a suitable gas, such as nitrogen, hydrogen, a rare gas, such as argon, or a mixture of gases.
- a suitable gas such as nitrogen, hydrogen, a rare gas, such as argon, or a mixture of gases.
- a quantity 8 of mercury, or other suitable normally liquid, easily vaporizable material Depending from the conductors 4, 5 and joined thereto as by. fusion, are small spiral conductors 10, 11 which terminate in electrode-like enlargements or terminals 12, 13. These terminals 12, 13 project into a cup 14, which preferably consists of silica and which is aflixed to the envelope 1 at 15.
- the main electrodes 6, 7 may have a diameter of about 100 mils.
- the coils 10, 11 may consist of 18 mil wire wound on a 40 mil mandrel and may have 8 to 10 turns.
- a globule of mercur 16 is introduced into the cup 14 by sha ing or tilting the device. Thereby completing the starting circuit, current is caused to flow in the starting circuit evaporatinglsome of the mercury andagain breaking t e circuit and starting an arc which travels up the coils and establishes an are between the main electrodes.
- the resistance of the coils is chosen to be greater than the resistance of the main discharge path. Conis prompt and positive.
- An electric discharge device comprising an envelope, cooperating spaced electrodes therein, a starting circult therefor, a quantity of normally liquid vaporizable conducting material in said envelope, and a receptacle within said envelope located and shaped to contain a quantity of said vaporiz- I.
- An electric discharge device comprising an envelope, cooperating fixed electrodes therein constituted of substantially nonvaporizable material, a normally incomplete starting circuit therefor, a quantity of mercury in said envelope, and means in sa1d envelope facilitating the introduction into said starting circuit of a definite amount of mercury to complete said starting circuit.
- An electric discharge device comprising an elongated envelope, conducting stems sealed into one end of said envelope and extending to a region adjacent the opposite end PHILIP K. DEVERS.
Landscapes
- Discharge Lamp (AREA)
- Lasers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US157030A US1640443A (en) | 1926-12-27 | 1926-12-27 | Electrical discharge device |
GB34608/27A GB282754A (en) | 1926-12-27 | 1927-12-21 | Improvements in and relating to electric discharge devices |
FR646333D FR646333A (fr) | 1926-12-27 | 1927-12-24 | Perfectionnements aux dispositifs à décharge électrique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US157030A US1640443A (en) | 1926-12-27 | 1926-12-27 | Electrical discharge device |
Publications (1)
Publication Number | Publication Date |
---|---|
US1640443A true US1640443A (en) | 1927-08-30 |
Family
ID=22562086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US157030A Expired - Lifetime US1640443A (en) | 1926-12-27 | 1926-12-27 | Electrical discharge device |
Country Status (3)
Country | Link |
---|---|
US (1) | US1640443A (fr) |
FR (1) | FR646333A (fr) |
GB (1) | GB282754A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745935A (en) * | 1952-05-27 | 1956-05-15 | Air Reduction | Method for arc welding |
-
1926
- 1926-12-27 US US157030A patent/US1640443A/en not_active Expired - Lifetime
-
1927
- 1927-12-21 GB GB34608/27A patent/GB282754A/en not_active Expired
- 1927-12-24 FR FR646333D patent/FR646333A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745935A (en) * | 1952-05-27 | 1956-05-15 | Air Reduction | Method for arc welding |
Also Published As
Publication number | Publication date |
---|---|
FR646333A (fr) | 1928-11-09 |
GB282754A (en) | 1928-09-06 |
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