US1724377A - Discharge tube - Google Patents
Discharge tube Download PDFInfo
- Publication number
- US1724377A US1724377A US15047A US1504725A US1724377A US 1724377 A US1724377 A US 1724377A US 15047 A US15047 A US 15047A US 1504725 A US1504725 A US 1504725A US 1724377 A US1724377 A US 1724377A
- Authority
- US
- United States
- Prior art keywords
- electrode
- envelope
- walls
- glass
- contact
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/385—Exhausting vessels
Definitions
- My invention relates to space-ourrent discharge devices and it has part1cular relation to the evacuation and the treatment of the electrodes of such devices.
- control electrodes perature of the control electrodes to a sufficiently high temperature, on account of the proximity of the glass walls.
- One object of my invention is to provide a vacuum tube of the above-described character wherein the control electrode is held in a position out of contact with the walls dur-' ing the heat treatment incident to the evacuation of the tube and is subsequently disposed adjacent to the walls for the normal operation of the tube.
- Another object of my invention is to provide a new method of treating tubes of the above-described character, by evacuating the same while the grid or the control electrode is out of contact with the surrounding walls and subsequently positioning the control grid adjacent to the glass wall as required for normal operation.
- Figure 1 is an elevational view of a mercury arc rectifier embodying my invention and illustrating trol electrodes during evacuation,.and
- F1 2 1 s a similar view illustrating the. recti er with the control electrode in the normal operating position.
- a mercury arc rectifier comprises a glass envelope 1 having a mercury cathode 2 at the bottom port1on thereof.
- Two tubular anode arms 3 extend laterally from the envelope and carry anodes 4 at their upper ends. -At a point somewhat below the anode 4, each tubular arm 3 is provided with a conical enlargement 5 adapted to receive a similarly shaped grid or control electrode 6.
- the grid In the normal operating position shown in Fig. 2, the grid is in direct contact with the glass walls of the conically shaped enlargement 5 and it entirely intercepts the discharge path between the anode and cathode.
- the control electrode 6 may be suspended from the anode. 4 by means of thin wires 8, as shown in Fig. 1. In that position, the control electrode may be heated, either inductively or in any other suitable manner, while theltube is being exhausted to remove thegases expelled from vthe control electrode during the heating process.”
- s1nce 1t may be employed in many other applications wherein it is desired toplace an electrode of an evacuated discharge device indifferent positions-during several stages of the treatment or of the operation of the same.
- a discharge tube comprising a glass envelope, a metallic electrode of relatively large mass inclosedwithin said envelope, 3. terminal conductor sealed into said envelope and connected to said electrode, said electrode being positioned adjacent to the glass walls of said envelope during normal operation, and fusible means for holding said electrode out of immediate contact with said glass prior to normal operation during the heat treatment and evacuation of the same.
- a discharge tube comprising a glass envelope, a metallic electrode of relatively large mass inclosed within said envelope, a terminal conductor sealed into said envelope and connected to said electrode, said terminal conductor including a resilient member tending to position said electrode adjacent to the glass within said envelope for normal operation, and means for holding said electrode out of immediate contact with said glass prior to normal operation.
- a discharge device comprising a glass envelope, an electrode member movably disposed within said envelope, said envelope comprising a supporting member adapted to engage said electrode member and to support the same during normal operation, and
- a resilient member adapted to maintain said electrode member in contact with saidsupporting member.
- a discharge device comprising a glass envelope having a tubular member, an electrode member movably disposed within said tubular member, said tubular member commovable from a position out of contact with the walls of said tubular member to a position wherein its outer surface is in contact with said walls.
- a aseous discharge device comprising a cathode, an anode, an enclosing glass envelope having a tubular member of substantially conical shape constituting the discharge path between said anode and said cathode, a tubular control electrode mounted in said tubular member and therein movable from a position out of contact with the Walls of said tubular member to a position wherein its outer surface is in contact with said walls, and a resilient member for forcing said control electrode into the last named position.
- a mercury-vapor discharge device comprising a glass envelope having a chamber containing a mercury cathode, a tubular arm upwardly extendingfrom said chamber, an anode mounted in the upper portion of said arm, said arm having a conically shaped portion constituting the discharge path between said cathode and said anode, a tubular control electrode of conical shape adapted to fit into, and contact with, the walls of the conical portion of said arm, and means for holding said control electrode in a position out of contact with said walls during the evacuation and for positioning said control electrode in contact with said walls during normal operation of said discharge device.
- a space-current discharge device comprising an envelope, a plurality of electrodes therein, said electrodes including terminal connections, one of said electrodes being movable, and destructible means within said envelope for supporting said movable electrode in an abnormal position, said supporting means being destructible without causing substantial injury to any of the other parts of the device.
- a discharge tube comprising a glass means for yieldably mounting said conical electrode including a destructible member, said electrode being biased by said mounting means to tend to move axially with respect 5 to said conical wall portion to assume a po-" sition in contact with said conical wall portion upon the destruction of said destructible member, said destructible member being destructible without causing substantial injury to any of the other parts of the device.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15047A US1724377A (en) | 1925-03-12 | 1925-03-12 | Discharge tube |
| DES70672D DE435475C (de) | 1925-03-12 | 1925-07-08 | Vakuumapparat |
| GB6900/26A GB249143A (en) | 1925-03-12 | 1926-03-12 | Improvements in vacuum electric tube devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15047A US1724377A (en) | 1925-03-12 | 1925-03-12 | Discharge tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1724377A true US1724377A (en) | 1929-08-13 |
Family
ID=21769249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15047A Expired - Lifetime US1724377A (en) | 1925-03-12 | 1925-03-12 | Discharge tube |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1724377A (de) |
| DE (1) | DE435475C (de) |
| GB (1) | GB249143A (de) |
-
1925
- 1925-03-12 US US15047A patent/US1724377A/en not_active Expired - Lifetime
- 1925-07-08 DE DES70672D patent/DE435475C/de not_active Expired
-
1926
- 1926-03-12 GB GB6900/26A patent/GB249143A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE435475C (de) | 1926-10-13 |
| GB249143A (en) | 1926-08-12 |
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