GB321553A - Improvements relating to electrode construction for electron discharge tubes - Google Patents

Improvements relating to electrode construction for electron discharge tubes

Info

Publication number
GB321553A
GB321553A GB3280228A GB3280228A GB321553A GB 321553 A GB321553 A GB 321553A GB 3280228 A GB3280228 A GB 3280228A GB 3280228 A GB3280228 A GB 3280228A GB 321553 A GB321553 A GB 321553A
Authority
GB
United Kingdom
Prior art keywords
grid
wire
struts
support
house
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
Application number
GB3280228A
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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
Application filed by Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB3280228A priority Critical patent/GB321553A/en
Publication of GB321553A publication Critical patent/GB321553A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture

Landscapes

  • Discharge Lamp (AREA)

Abstract

321,553. Mullard Radio Valve Co., Ltd., and Krol, B. Nov. 9, 1928. Vacuum tubes. - A grid for a discharge tube comprises a wire coil, a substantial part of which adjacent to a supporting wire has its turns flattened so that they lie approximately in one plane and constitute a row of struts between the support and the unflattened grid proper. In one construction, Fig. 3, a wire 10 is wound, elliptically, around supports 12, and is then pressed to shape by means of dies 14 and :a former 16. The grid may have struts extending only on one side thereof, or arranged in three planes at 120‹ to one another in conjunction with three support wires, and may house a filamentary or indirectly heated cathode, and may be enclosed in an anode conforming approximately to its shape. Spaced notches on the support may house the grid wire, the edges being subsequently burred over e.g. by means of a steel roller. Cooling may be effected by the insertion of thin nickel plates 26, Fig. 13, between the struts. The electrode structure may be mounted so that its axis is either parallel or at right angles to the axis of the pinch.
GB3280228A 1928-11-09 1928-11-09 Improvements relating to electrode construction for electron discharge tubes Expired GB321553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3280228A GB321553A (en) 1928-11-09 1928-11-09 Improvements relating to electrode construction for electron discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3280228A GB321553A (en) 1928-11-09 1928-11-09 Improvements relating to electrode construction for electron discharge tubes

Publications (1)

Publication Number Publication Date
GB321553A true GB321553A (en) 1929-11-14

Family

ID=10344202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3280228A Expired GB321553A (en) 1928-11-09 1928-11-09 Improvements relating to electrode construction for electron discharge tubes

Country Status (1)

Country Link
GB (1) GB321553A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794934A (en) * 1952-11-20 1957-06-04 Raytheon Mfg Co Grids and methods and apparatus for forming same
DE1039651B (en) * 1955-11-02 1958-09-25 Sylvania Electric Prod Machine for the production of grilles for electric discharge tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794934A (en) * 1952-11-20 1957-06-04 Raytheon Mfg Co Grids and methods and apparatus for forming same
DE1039651B (en) * 1955-11-02 1958-09-25 Sylvania Electric Prod Machine for the production of grilles for electric discharge tubes

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