US1658653A - Vacuum tube - Google Patents

Vacuum tube Download PDF

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Publication number
US1658653A
US1658653A US185548A US18554827A US1658653A US 1658653 A US1658653 A US 1658653A US 185548 A US185548 A US 185548A US 18554827 A US18554827 A US 18554827A US 1658653 A US1658653 A US 1658653A
Authority
US
United States
Prior art keywords
insulator
wire
filament
plate
vacuum tube
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
US185548A
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English (en)
Inventor
Renner Michael
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 BE350525D priority Critical patent/BE350525A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US185548A priority patent/US1658653A/en
Application granted granted Critical
Publication of US1658653A publication Critical patent/US1658653A/en
Priority to FR652567D priority patent/FR652567A/fr
Priority to GB11455/28A priority patent/GB289056A/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

Definitions

  • the present invention relates to vacuum tubes and more particularly to suspenslon means 'for supporting the cathode element in such tubes.
  • One of the objects of the inven- 6 tion is to provide a resilient cathode support which is so mounted in the vacuum tube that lateral movement of the cathode is prevented.
  • a suspension element for the filament which comprises a w1reextending through a rigidly supported insulator, one end of the suspension element being provided with a hook adapted to engage the filament, and the other end of the suspension means being engaged by a spring supported on the insulator.
  • the opening 1n the nsulator has to be made quite large to provide for free movement of the suspension means under all conditions and especially when the filament is heated.
  • Making the opening 1n the insulator sufliciently large to provide for free movement of the suspension means permits the suspension means to pivot about the opening in the insulator and thereby allow suflicient lateral movement of the filament to short circuit the filament on the grid.
  • Fig- 1 shows a front elevation artlybroken away of a vacuum tube embo ying the teatures of m invention while F1gs. 2.
  • Fig- 3 are respectively a perspectivedetailed view an opening adapted ,to slid- 40 ably engage the upper end of the suspension and a cross sectional detailed view of the means for supporting the filamentary cathode, Fig. 3 being on a somewhat enlarged scale.
  • I have indicated at 1 a vacuum tube of well known construction in which the anode 2 is supported on a split metal collar 3 mounted at one end of the tube while the filamentary cathode and grid are supported from the opposite end of the tube.
  • An insulator 4 is mounted on. the collar 3 and is provided with openings 5 adapted to accommodate rods 6 which serve as a support for the grid or control electrode. Engagement of the rods 6 in these openings prevents lateral movement between the anode and control electrode.
  • a second insulator 7 is mounted on rods 6 and held in position by small metal beads or other suitable means. Insulator 7 is provided with a plurality of open ngs 8 adapted to slidably accommodate suspension wires 9 each of which has a hook 10 at its lower end adapted to engage a filamentary cathode 11.
  • metal plate 12 having a downwardly extending flange 13 is rigidly secured to wire 9 by means of a perforated plate 14 which is v welded to wire 9 and plate 12.
  • a second metal plate 15 restson insulator 7 and fits loosely on wire 9.
  • Plate 15 is provided with r an upwardly extending flange 16 as clearly indicated in Fig. 3.
  • a cylindrical spring 17 is mounted betwe'en'plates 12 and 15 and is normally held compressed by the tension of the filament 11. The flanged plate 15 prevents lateral movement of spring 17 and holds it in central position with respect to wire 9.
  • a third insulator 18 mounted on rod 6 and disposedbetween insulators 4 and 7 is normally spaced from'the latter by a plurality of metal collars or sleeves 19 mounted on rod 6.
  • Metal beads 20 serve to maintain insulator 18 in spaced relation with insulator 4.
  • Insulator 18 is provided-with a plurality of openings 21 in alignment with openings 8 in insulator 7 and adapted to accommodate wires 9.
  • the spacing collars 19 are of such alength' that the maximum upward movement ofthe plate 12 due to expansion of the filament when heated, will carry the plate to a point just short of insulator 18.
  • the distance between insulators 4 and 7' is sufiicient to permit maximum upward movement of wire 9 sulator 4.
  • Spring 17 on account of its cylindrical shape and the bearings provided by the plates 12 and 13 causes movement of the wire 9 in a substantially vertical direction and thereby tends to prevent binding of Wire 9 in the openings 8 and 21. However, if there is any tendency for lateral movement of the lower end of wire 9, such movement is effectively prevented by the engagement of the upper end of this wire with the sides of the opening 21 in insulator 18.
  • a rigidly mounted insulator provided with an opening, a wire extending therethrough, said wire having means at its lower end adapted to engage a filamentary electrode, flexible means engaging said wire whereby a. tension may be applied to 'the filament, and means slidably engaging the upper end of said wire and adapted to limit lateral movement of said filamentary electrode.
  • a pair of rigidly mounted insulators spaced apart from one another and provided with aligned openings, 0. wire extending through said without causing contact of wire 9 with in-v openings, a wire extending through openings and adapted to engage the cathode openings and adapted to engage a filamentary electrode, and'a spring mounted between said insulators and connected to said wire.
  • a pair of rigidly mounted insulators spaced apart from one another and provided with aligneg element of the discharge device, a plate rigidly connected to said wire, and a spring mounted between said plate and one of said insulators.
  • a rigidly mounted insulator having an opening extending therethrough, a plate having an opening in alignment with the opening in the insulator, said plate having an upwardly extending flange, a wire extending through said openings, said wire having a hook at its lower end adapted to engage a filament, a plate having a downwardly extending flange rigidly secured to said wire adjacent the upper end thereof, and a substantially cylindrical spring mounted between said plates and adapted to apply tension to the filament.

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Lasers (AREA)
  • Particle Accelerators (AREA)
US185548A 1927-04-21 1927-04-21 Vacuum tube Expired - Lifetime US1658653A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE350525D BE350525A (enrdf_load_html_response) 1927-04-21
US185548A US1658653A (en) 1927-04-21 1927-04-21 Vacuum tube
FR652567D FR652567A (fr) 1927-04-21 1928-04-06 Perfectionnements aux tubes à vide et aux moyens de maintenir leurs électrodes en position
GB11455/28A GB289056A (en) 1927-04-21 1928-04-18 Improvements relating to vacuum tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US185548A US1658653A (en) 1927-04-21 1927-04-21 Vacuum tube

Publications (1)

Publication Number Publication Date
US1658653A true US1658653A (en) 1928-02-07

Family

ID=22681459

Family Applications (1)

Application Number Title Priority Date Filing Date
US185548A Expired - Lifetime US1658653A (en) 1927-04-21 1927-04-21 Vacuum tube

Country Status (4)

Country Link
US (1) US1658653A (enrdf_load_html_response)
BE (1) BE350525A (enrdf_load_html_response)
FR (1) FR652567A (enrdf_load_html_response)
GB (1) GB289056A (enrdf_load_html_response)

Also Published As

Publication number Publication date
BE350525A (enrdf_load_html_response)
FR652567A (fr) 1929-03-11
GB289056A (en) 1928-10-25

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