US1666010A - Valve for wireless telegraphy or telephony - Google Patents
Valve for wireless telegraphy or telephony Download PDFInfo
- Publication number
- US1666010A US1666010A US43259A US4325925A US1666010A US 1666010 A US1666010 A US 1666010A US 43259 A US43259 A US 43259A US 4325925 A US4325925 A US 4325925A US 1666010 A US1666010 A US 1666010A
- Authority
- US
- United States
- Prior art keywords
- cathode
- valve
- filament
- telephony
- wireless telegraphy
- 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
- 238000010438 heat treatment Methods 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000013543 active substance Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 102100035683 Axin-2 Human genes 0.000 description 1
- 101700047552 Axin-2 Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical class [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- DNNLEMIRRGUGOZ-UHFFFAOYSA-N oxygen(2-);thorium(4+) Chemical class [O-2].[O-2].[Th+4] DNNLEMIRRGUGOZ-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910003452 thorium oxide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Definitions
- My invention relates to a valve of the kind used in wireless telegraphy or telepl 1ony, specially constructed with the ob ect of utilizing alternating current from the town su ply to heat the cathode.
- the single filament generally used in triode valves is substituted according to my invention by a tubular cathode the heating of which is ensured by the action of a central auxiliary filament branched upon the alternating current from the town supply.
- a central auxiliary filament branched upon the alternating current from the town supply.
- the latter is mounted and supported upon a tubular part of refractory and insulating material.
- the cathode is moreover specially constructed with the object of ensuring a regular transmission.
- the invention has further for its object a special mode of supporting the auxiliary filament and the tube carrying the cathode.
- the appended drawing shows by way of example two difierent modes of construction of a valve made according to the present invention.
- Fig. 1 is a diagram showing the general disposition.
- Fig. 2 shows separately the special supporting device for" the auxiliary filament and the cathode tube.
- the valve consists of a tubular cathode it carried upon a part also of tubular shape I) made of a refractory insulating and homogenous material such for instance as quartz.
- the cathode a which is designed for the sending off of electrons is constituted by a tube made of a metal such as tungsten or molybdenum acting as carrier for a layer of active substances capable of emitting at moderate temperatures or in the body of which the active substances are incorporated or mixed.
- the oxides or oxide mixtures studied by Wehnelt such for instance as calcium, barium, strontium or thorium oxides, etc., may be employed advantageously to constitute the active substances.
- the cathode is connected to the plate and grid circuits by the lead 0.
- the cathode formed in this manner is. heated by a straight or helical auxiliary filament 0?, as shown, the emissive power of which in addition to that of the cathode will bring the latter to a degree of heat suflicient to produce an abundant emission of free electrons.
- the filament d will be branched on an alternating current, such for instance as the circuit of the town sup-. ply, by means of leads 0 and 0
- the insulating cathode support I) is kept centered around the auxiliary filament d by means of tubular parts f and f of nickel for instance secured by pinching upon the leads e and 6 these tubular parts serving thus to retain both ends of the auxiliary filament d in position.
- This arrangement has also for its object. to enclose the central auxiliary filament in order to avoid a prejudicial emission of electrons b the latter.
- the valve is completed in t e usual manner by a grid 9 and a plate It connected with their respective circuits by the leads i and j.
- auxiliary heating filament d secured to the leads 6, e is wound helically-for part of its length only and in the middle in order to allow of heating the middle part of the quartz tube without putting the admissions of current in the interior of said tube.
- the latter is carried by means of supporting sleeves k, k which are fixed by soldering to the current admissions and contribute to the cooling of the extremities of the quartz tube.
- the sleeves k are made of a refractory metal such for instance as molybdenum.
- the cathode being formed by a rigid undeformable part it will be possible to bring the grid and plate nearer together without any risk of producing a short circuit caused by electrostatic attraction.
- a valve for wireless telegraphy and telephony comprising a metallic tubular cathode coated with electron emitting metallic oxides, an auxiliary heating filament in said cathode, conductors for supplying alternating current supporting the filament, a quartz tube between the filament and cathode, supporting the latter and projecting beyond the ends thereof, and collars at both ends of the quartz tube supporting the same and the said conductors.
- a valve for wireless telegraphy and telephony comprising a grid, a plate, a tubu- UED lar cathode coated with electron emittin said filament and "su porting the same, nickel oxides, an electrically non-conductin an; collars supporting t e ends of said tube and heat transmittingtube longer than. sai cathelectrically connected to said conductors and 10 ode supporting t e latter and pro'eeting been ported thereby.
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Solid Thermionic Cathode (AREA)
- Cold Cathode And The Manufacture (AREA)
- Electron Sources, Ion Sources (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Discharge Lamp (AREA)
Description
April 10, 1928.
Filed July 13, 1925 Patented Apr. 10, 1928.
UNITED STATES PATENT OFFICE.
JACQUES ANTOINE MARIE HAWADIER, or PARIS, rRANcE.
Application filed July 13, 1925, Serial No. 43,259, and in France August 2, 1924.
My invention relates to a valve of the kind used in wireless telegraphy or telepl 1ony, specially constructed with the ob ect of utilizing alternating current from the town su ply to heat the cathode.
ith this object in view the single filament generally used in triode valves is substituted according to my invention by a tubular cathode the heating of which is ensured by the action of a central auxiliary filament branched upon the alternating current from the town supply. In order to avoid all contact of this auxiliary filament with the tubular sending cathode, the latter is mounted and supported upon a tubular part of refractory and insulating material. The cathode is moreover specially constructed with the object of ensuring a regular transmission.
The invention has further for its object a special mode of supporting the auxiliary filament and the tube carrying the cathode.
The appended drawing shows by way of example two difierent modes of construction of a valve made according to the present invention.
Fig. 1 is a diagram showing the general disposition.
Fig. 2 shows separately the special supporting device for" the auxiliary filament and the cathode tube.
As will be seen the valve consists of a tubular cathode it carried upon a part also of tubular shape I) made of a refractory insulating and homogenous material such for instance as quartz. The cathode a which is designed for the sending off of electrons is constituted by a tube made of a metal such as tungsten or molybdenum acting as carrier for a layer of active substances capable of emitting at moderate temperatures or in the body of which the active substances are incorporated or mixed. The oxides or oxide mixtures studied by Wehnelt such for instance as calcium, barium, strontium or thorium oxides, etc., may be employed advantageously to constitute the active substances. The cathode is connected to the plate and grid circuits by the lead 0.
. The cathode formed in this manner is. heated by a straight or helical auxiliary filament 0?, as shown, the emissive power of which in addition to that of the cathode will bring the latter to a degree of heat suflicient to produce an abundant emission of free electrons. The filament d will be branched on an alternating current, such for instance as the circuit of the town sup-. ply, by means of leads 0 and 0 The insulating cathode support I) is kept centered around the auxiliary filament d by means of tubular parts f and f of nickel for instance secured by pinching upon the leads e and 6 these tubular parts serving thus to retain both ends of the auxiliary filament d in position. This arrangement has also for its object. to enclose the central auxiliary filament in order to avoid a prejudicial emission of electrons b the latter.
The valve is completed in t e usual manner by a grid 9 and a plate It connected with their respective circuits by the leads i and j.
In the mode of execution shown in Fig. 2 the cathode is placed horizontally. The auxiliary heating filament d secured to the leads 6, e is wound helically-for part of its length only and in the middle in order to allow of heating the middle part of the quartz tube without putting the admissions of current in the interior of said tube. The latter is carried by means of supporting sleeves k, k which are fixed by soldering to the current admissions and contribute to the cooling of the extremities of the quartz tube. The sleeves k are made of a refractory metal such for instance as molybdenum.
The cathode being formed by a rigid undeformable part it will be possible to bring the grid and plate nearer together without any risk of producing a short circuit caused by electrostatic attraction.
In the course of manufacture the occluded gases are completely evacuated from the difierent parts of the valve and newssary care should be taken during the pumping in order to avoid any formation of gas which might be prejudicial to-the working of the valve. 1
I claim:
1. A valve for wireless telegraphy and telephony, comprising a metallic tubular cathode coated with electron emitting metallic oxides, an auxiliary heating filament in said cathode, conductors for supplying alternating current supporting the filament, a quartz tube between the filament and cathode, supporting the latter and projecting beyond the ends thereof, and collars at both ends of the quartz tube supporting the same and the said conductors. I
2. A valve for wireless telegraphy and telephony comprising a grid, a plate, a tubu- UED lar cathode coated with electron emittin said filament and "su porting the same, nickel oxides, an electrically non-conductin an; collars supporting t e ends of said tube and heat transmittingtube longer than. sai cathelectrically connected to said conductors and 10 ode supporting t e latter and pro'eeting been ported thereby.-
' I yond its ends, a. spiral heating ament in n testimonyfthat I elairn the foregoing as said tube solely in the middle part thereof, my invention; I have signed my name. alternating current supply conductors forv JACQUES AN'l'lJlNE MARIE'HAWADIER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR597125T | 1924-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1666010A true US1666010A (en) | 1928-04-10 |
Family
ID=8968056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US43259A Expired - Lifetime US1666010A (en) | 1924-08-02 | 1925-07-13 | Valve for wireless telegraphy or telephony |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1666010A (en) |
| FR (1) | FR597125A (en) |
| GB (1) | GB237919A (en) |
| NL (1) | NL16615C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046444A (en) * | 1959-04-28 | 1962-07-24 | Raytheon Co | Magnetrons |
| US3197667A (en) * | 1959-10-02 | 1965-07-27 | Philips Corp | Indirectly heated cathode of small filament current power |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE738989C (en) * | 1933-10-31 | 1943-09-08 | Opta Radio Ag | Indirectly heated cathode for amplifier tubes made by the metal vapor process |
-
0
- NL NL16615D patent/NL16615C/xx active
-
1924
- 1924-08-02 FR FR597125D patent/FR597125A/en not_active Expired
-
1925
- 1925-07-13 US US43259A patent/US1666010A/en not_active Expired - Lifetime
- 1925-07-31 GB GB19440/25A patent/GB237919A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046444A (en) * | 1959-04-28 | 1962-07-24 | Raytheon Co | Magnetrons |
| US3197667A (en) * | 1959-10-02 | 1965-07-27 | Philips Corp | Indirectly heated cathode of small filament current power |
Also Published As
| Publication number | Publication date |
|---|---|
| NL16615C (en) | |
| GB237919A (en) | 1926-06-03 |
| FR597125A (en) | 1925-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB521850A (en) | Improvements in and relating to thermionic electrodes for electric discharge devices | |
| US2201720A (en) | Thermionic cathode structure | |
| US1666010A (en) | Valve for wireless telegraphy or telephony | |
| US2135941A (en) | Electrode structure | |
| US2044369A (en) | Electron discharge device | |
| US2301670A (en) | Low tension lamp tube | |
| US2513933A (en) | Cold cathode magnetron | |
| USRE15278E (en) | Electron-discharge apparatus | |
| USRE18628E (en) | Signments | |
| US1929931A (en) | Cathode for electron discharge devices | |
| US2273450A (en) | High pressure metal vapor lamp | |
| US2000695A (en) | Hot cathode electron discharge tube | |
| US1917991A (en) | Vacuum tube filament structure | |
| US2409771A (en) | Electrical discharge device | |
| US1650232A (en) | Thermionic tube | |
| US1929369A (en) | Electrical discharge device | |
| US2201880A (en) | Electron discharge device | |
| US1459412A (en) | Thermionic translating device | |
| US1852739A (en) | Incandescent cathode | |
| US2000938A (en) | Electron discharge device | |
| US2007933A (en) | Lamp construction | |
| US1211091A (en) | Cathode-ray device. | |
| US1991197A (en) | Electron discharge device | |
| US1273630A (en) | Electron-discharge apparatus. | |
| US1875002A (en) | Discharge tube with glow cathode |