GB381550A - Improvements in and relating to the manufacture of grid electrodes for electric discharge devices - Google Patents

Improvements in and relating to the manufacture of grid electrodes for electric discharge devices

Info

Publication number
GB381550A
GB381550A GB18897/31A GB1889731A GB381550A GB 381550 A GB381550 A GB 381550A GB 18897/31 A GB18897/31 A GB 18897/31A GB 1889731 A GB1889731 A GB 1889731A GB 381550 A GB381550 A GB 381550A
Authority
GB
United Kingdom
Prior art keywords
holes
thickness
sheet
inch
rolled
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
GB18897/31A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB381550A publication Critical patent/GB381550A/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
    • H01J2893/0024—Planar grids
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/496—Multiperforated metal article making
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut

Landscapes

  • Punching Or Piercing (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Discharge Lamp (AREA)

Abstract

381,550. Discharge devices. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Murphy, G. F. ; 2722, Campbell Avenue, Schenectady, New York, U.S.A.) June 30, 1931, No. 18897. Convention date, July 1, 1930. [Class 39 (i).] Grid material is made by forming holes in sheet metal which is then rolled to produce the final dimensions. An arc discharge tube comprises a cathode 5 coated with barium nitrate and indirectly heated by a filament 7, an anode 14, and a grid G, a drop of mercury or an inert gas being admitted into the casing 1 after evacuation. Holes are punched in a sheet of metal, which may be of a nickel-chromium alloy and of thickness about 0À01 inch, the holes formed being about 0À025 inch in diameter. The sheet so formed is rolled by rolls 28, Fig. 9, in one direction to reduce the thickness of the sheet and render the holes elliptical, and may then be rolled transversely further to reduce the size of the holes and the thickness of the plate. By using square punches, diamond-shaped holes may be produced by a first rolling. The final thickness of the material may be 0À005 inch.
GB18897/31A 1930-07-01 1931-06-30 Improvements in and relating to the manufacture of grid electrodes for electric discharge devices Expired GB381550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US465163A US1919984A (en) 1930-07-01 1930-07-01 Method of making grid structures

Publications (1)

Publication Number Publication Date
GB381550A true GB381550A (en) 1932-09-30

Family

ID=23846724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18897/31A Expired GB381550A (en) 1930-07-01 1931-06-30 Improvements in and relating to the manufacture of grid electrodes for electric discharge devices

Country Status (2)

Country Link
US (1) US1919984A (en)
GB (1) GB381550A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE847629C (en) * 1933-02-22 1952-08-25 Baker & Co Electron tubes with perforated sheet metal electrode and electrodes for it

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492665A (en) * 1945-03-29 1949-12-27 Sylvania Electric Prod Thyratron tube
US2507709A (en) * 1946-09-26 1950-05-16 Bell Telephone Labor Inc Grid electrode and method of manufacture
NL68076C (en) * 1947-03-15
US2592549A (en) * 1949-08-03 1952-04-15 Bell Telephone Labor Inc Anode structure for electron discharge devices
NL112717C (en) * 1959-01-22
US3095637A (en) * 1959-01-26 1963-07-02 Lau Blower Co Method of making blower blade sheet
US3135586A (en) * 1961-01-23 1964-06-02 Smith H Brown Perforation method and apparatus
US6860012B2 (en) * 2003-02-10 2005-03-01 Chien Tan Lee Method for forming elastic ventilation cushion
NZ618096A (en) * 2011-05-30 2016-06-24 Ind Galvanizers Corp Pty Ltd Roadside barrier post attachment
US11408291B2 (en) * 2018-07-27 2022-08-09 Raytheon Technologies Corporation Airfoil conformable membrane erosion coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE847629C (en) * 1933-02-22 1952-08-25 Baker & Co Electron tubes with perforated sheet metal electrode and electrodes for it

Also Published As

Publication number Publication date
US1919984A (en) 1933-07-25

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