US1780033A - Vacuum tube - Google Patents

Vacuum tube Download PDF

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Publication number
US1780033A
US1780033A US174863A US17486327A US1780033A US 1780033 A US1780033 A US 1780033A US 174863 A US174863 A US 174863A US 17486327 A US17486327 A US 17486327A US 1780033 A US1780033 A US 1780033A
Authority
US
United States
Prior art keywords
wires
filament
plate
supporting
wire
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
Application number
US174863A
Other languages
English (en)
Inventor
Henry J Nolte
Walter I Relyea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL23834D priority Critical patent/NL23834C/xx
Priority to BE349521D priority patent/BE349521A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US174863A priority patent/US1780033A/en
Priority to GB7384/28A priority patent/GB287055A/en
Application granted granted Critical
Publication of US1780033A publication Critical patent/US1780033A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7129—Laterally spaced rods

Definitions

  • the present invention relates to vacuum.
  • Fig. 1 is an elevation partly broken away of a w; J61 cooled electron discharge device which embodies the features of our invention;
  • Fig. 2 is a cross section and elevation partly broken away of the lower portions of the electrodes;
  • Figs. 3 and 4 are detail views of the upper and lower portions respectively of the filamentary electrode;.
  • Fig. 5 is an elevation of a portion of the grid or control electrode; Fig. 6 shows a detail of the grid construction; while Figs. 7 and 8 show an elevation and cross section'respectively of the lower portion of the grid structure.
  • a power,.electron' discharge device I which has a rating of about 100 kw. It comprises an anode 1 made from seamless drawn copper tubing and an upper glass portion?r joined to the anode in any suitable manner and provided with a reentrant portion I 3-.
  • the reentrant portion 3 is surrounded by a.
  • Grid 5 comprises four supporting wires 6 of refractory metal supporting a coiled wire I on the supporting wires 6 at the opposite ends thereof.
  • braces 11 engage wires 6.
  • the slit portions can be coiled sufficiently tight around the wires 6' to avoid the use of a weld. If it is desired to weld the braces to the supporting wires, however, the welds may be made at the ends of the slit portions rather than at the junction of the braces with the wire 6. Since these welds are removed from. the junction of the brace and supporting wire relative movement between the supporting wires 6 will not cause the braces to become loosened.
  • a pair of spaced collars 12 and 13 are mounted adjacent one end of the grid supporting wires 6 and secured thereto by braces 14 and 15.
  • the collars engage an elongated clear quartz rod 16 having cut-away or grooved portions to provide suitable bearings for the collars.
  • the collars which may be detachably secured to the quartz stem by means ofsuitable screw threaded bolts 17 and 18, serve to clamp the insulating rod rigidly in position.
  • the lower end of rod 16 is provided with a thin metal or other suitable plate 19 which acts as a guide and spaces the grid from the anode 1.
  • Collar 13 is spaced about groove and about the spring fingers to main tain them in position on the insulating rod.
  • the upper end of spring 20 is connected to a perforated, hexagonal plate 2i through which the wires comprising the filament 21 may be threaded.
  • the filamentary electrode is supplied with current through a pair of copper conductors 25 connected with refractory leading-in wires 26 and 27.
  • the lower end of each leading-in Wire is provided with three Z shaped members or extensions 28 which are secured in any suitable manner to the leading-in wires and mounted so that the lower ends of the extensions on each leading-in wire are-spaced apart 120.
  • the ends of members 28 on one leadingin wire are disposed in alternate relation with the Z shaped extensions 28 on the other leading-in ,-wire so that the wires which are connected to the ends of the Z shaped members are arranged substantially in a circle and the adjacent or successive wires in the circle will be positive and negative respectively when current is supplied to the leading-in wires from the conductors 25.
  • Each of the Wires comprisingthe filament is threaded through openings in plate 24.
  • a series of U shaped members 29 are inserted through adjacent openings in the plate 24.
  • the filament extends along the outer periphery of the members 29 and are firmly secured thereto by thin wires 80.
  • the presence of members 29 prevents overheating of the plate 24 by the filament current and at the same time insures a definite lighted filament length and rovides a certain degree of rigidity to the lament.
  • the looped wires comprising the filament are circularly disposed in substantially parallel relation to one another and adjacent wires are connected to the positive and negative leading-in wires respectively. This arrangement is particularly advantageous as the magnetic fields produced by the current flowing through the filament wires do not tend to cause displacement or bowing of the filament wires.
  • Awire screen 31 indicated in dotted lines (Fig. 1) is mounted on the upper end of the grid supporting wires and serves to protect the upper glass portion 2 from positive ion and electron bombardment and, consequently, punctures during the operation of the tube.
  • an electron discharge device comprising an anode. a filamentary cathode and a control electrode, supporting means for the control electrode, an elongated insulator positioned longitudinally of the discharge device and secured to said means, said insulator having fiat bearing surfaces, a clamp on said surfaces and connected to said supporting means, and means for applying a tension to the filamentary cathode, said latter means comprising a spring connected to one end of said insulator.
  • an electron discharge device comprising an anode, a filamentary cathode and a control electrode, supporting means for the control electrode, an elongated insulator positioned longitudinally of the discharge device and provided with a groove, means mounted in said groove and connected to said supporting means, means comprising a spring connected to one end of the insulator for applying a tension to the filamentary cathode, and means on the opposite end of the insulator for spacing the insulator from the anode, the distance between said groove and the opposite ends of the insulator being proportional to the normal operating potential diflierence between the control electrode and cathode and between the control electrode and anode respectively.
  • an electron discharge device comprisingan anode and a control electrode, an insulator supported from said control electrode, a filamentary. electrode comprising a plurality of circumferentia-lly arranged looped wires substantially parallel throughout their entire length, means for applying a tension to said filamentary electrode, said means comprising a perforated metal plate, a plurality of U shaped members extending through said perforated plate and connected to said filament and a spring connected at one end to said plate and at the other end to said insulator.
  • a filamentary electrode comprising a plurality of substantially arallel'looped wires, the ends of said loops eing arranged in a. circle, a pair of leading-in wires connected to the ends of said looped conductors to supply current thereto, the adjacent wires of the filament being connected to different leading-in conductors, a perforated plate mounted on said filament Wires, and means for appying a tension to said plate.
  • a plate having a plurality of openings therein, a U shaped member mounted on said plate and having portions extending through said openings, and a filamentary electrode connected to the ends of said U shaped member.
  • An electrode comprising a plurality of supporting wires and a wire brace connecting said supporting wires, the opposite ends of said brace being slit toprovide relatively thin Wire portions; said portions at each end of the brace being wound in opposite directions around one of 'said supporting wires.

Landscapes

  • Discharge Lamp (AREA)
  • Electron Sources, Ion Sources (AREA)
US174863A 1927-03-12 1927-03-12 Vacuum tube Expired - Lifetime US1780033A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL23834D NL23834C (xx) 1927-03-12
BE349521D BE349521A (xx) 1927-03-12
US174863A US1780033A (en) 1927-03-12 1927-03-12 Vacuum tube
GB7384/28A GB287055A (en) 1927-03-12 1928-03-09 Improvements in electrode structures for electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174863A US1780033A (en) 1927-03-12 1927-03-12 Vacuum tube

Publications (1)

Publication Number Publication Date
US1780033A true US1780033A (en) 1930-10-28

Family

ID=22637838

Family Applications (1)

Application Number Title Priority Date Filing Date
US174863A Expired - Lifetime US1780033A (en) 1927-03-12 1927-03-12 Vacuum tube

Country Status (4)

Country Link
US (1) US1780033A (xx)
BE (1) BE349521A (xx)
GB (1) GB287055A (xx)
NL (1) NL23834C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041495A (en) * 1959-09-01 1962-06-26 Rca Corp Grid mounts for electron tubes
US3517249A (en) * 1966-12-29 1970-06-23 Nippon Electric Co Cage-like filament structure for electron discharge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041495A (en) * 1959-09-01 1962-06-26 Rca Corp Grid mounts for electron tubes
US3517249A (en) * 1966-12-29 1970-06-23 Nippon Electric Co Cage-like filament structure for electron discharge

Also Published As

Publication number Publication date
BE349521A (xx)
NL23834C (xx)
GB287055A (en) 1928-05-17

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