GB860879A - Improvements relating to the manufacture of thermionic valve grids - Google Patents

Improvements relating to the manufacture of thermionic valve grids

Info

Publication number
GB860879A
GB860879A GB157458A GB157458A GB860879A GB 860879 A GB860879 A GB 860879A GB 157458 A GB157458 A GB 157458A GB 157458 A GB157458 A GB 157458A GB 860879 A GB860879 A GB 860879A
Authority
GB
United Kingdom
Prior art keywords
grid
wire
manufacture
thermionic valve
improvements relating
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
GB157458A
Inventor
Clayton Arbuthnot Lane
Reginald John
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.)
Siemens Edison Swan Ltd
Original Assignee
Siemens Edison Swan 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 Siemens Edison Swan Ltd filed Critical Siemens Edison Swan Ltd
Priority to GB157458A priority Critical patent/GB860879A/en
Publication of GB860879A publication Critical patent/GB860879A/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
    • H01J2893/0025—Manufacture by winding wire upon a support

Abstract

860,879. Thermionic valves. SIEMENS EDISON SWAN Ltd. Jan. 14, 1959 [Jan. 16, 1958], No. 1574/58. Class 39(1). [Also in Group XXII] A method of forming a grid for a thermionic valve comprises placing a helically wound grid wire 1 around two spaced apart support -wires 2, 3 and a mandrel 7 having fins 13, 14 extending between the two wires and then pressing a forming tool 8, 9 round the wire grid to make the grid wire follow the outline at least of the fins. Instead of being circular in section the central part of the grid may be of rectangular or diamond shaped section.
GB157458A 1958-01-16 1958-01-16 Improvements relating to the manufacture of thermionic valve grids Expired GB860879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB157458A GB860879A (en) 1958-01-16 1958-01-16 Improvements relating to the manufacture of thermionic valve grids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB157458A GB860879A (en) 1958-01-16 1958-01-16 Improvements relating to the manufacture of thermionic valve grids

Publications (1)

Publication Number Publication Date
GB860879A true GB860879A (en) 1961-02-15

Family

ID=9724323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB157458A Expired GB860879A (en) 1958-01-16 1958-01-16 Improvements relating to the manufacture of thermionic valve grids

Country Status (1)

Country Link
GB (1) GB860879A (en)

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