GB220747A - Improvements in electric tube devices having coiled filaments - Google Patents

Improvements in electric tube devices having coiled filaments

Info

Publication number
GB220747A
GB220747A GB15305/23A GB1530523A GB220747A GB 220747 A GB220747 A GB 220747A GB 15305/23 A GB15305/23 A GB 15305/23A GB 1530523 A GB1530523 A GB 1530523A GB 220747 A GB220747 A GB 220747A
Authority
GB
United Kingdom
Prior art keywords
helix
bent
filament
convolutions
support
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
GB15305/23A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB15305/23A priority Critical patent/GB220747A/en
Priority to DER61179D priority patent/DE441998C/en
Priority to US715655A priority patent/US1674520A/en
Priority to FR582663D priority patent/FR582663A/en
Publication of GB220747A publication Critical patent/GB220747A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Wire Processing (AREA)

Abstract

220,747. Robinson, E. Y. June 12, 1923. Filaments, attaching; filaments, supports for.- A coiled filament is supported at several points around one or more of its end convolutions, or continuously over a relatively large portion of those convolutions. As shown in Fig. 1, a support 2 of molybdenum or nickel, secured to a lead-in wire 3, has radial arms 4 bent around the end convolution, which may be bent slightly so as to lie in a plane at right angles to the axis of the helix 1. The support may be of thin material strengthened by a washer, and may be in the form of a triangular plate, the corners of which are bent around the filament. In a modification the support consists of three conically splayed strips. As shown in Fig. 4, a short tube 7, of a diameter equal to or slightly larger than the internal diameter of the helix 1, has a flange 8 retaining one or more of the end convolutions. Tongues may be provided on the flange and may be bent to secure the filament. The end convolutions may be of smaller pitch than the rest of the helix.
GB15305/23A 1923-06-12 1923-06-12 Improvements in electric tube devices having coiled filaments Expired GB220747A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB15305/23A GB220747A (en) 1923-06-12 1923-06-12 Improvements in electric tube devices having coiled filaments
DER61179D DE441998C (en) 1923-06-12 1924-05-22 Bracket for helically wound glow cathodes
US715655A US1674520A (en) 1923-06-12 1924-05-24 Electric tube device having coiled filaments
FR582663D FR582663A (en) 1923-06-12 1924-06-11 Electrical Spiral Filament Vacuum Tube Improvements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15305/23A GB220747A (en) 1923-06-12 1923-06-12 Improvements in electric tube devices having coiled filaments

Publications (1)

Publication Number Publication Date
GB220747A true GB220747A (en) 1924-08-28

Family

ID=10056713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15305/23A Expired GB220747A (en) 1923-06-12 1923-06-12 Improvements in electric tube devices having coiled filaments

Country Status (4)

Country Link
US (1) US1674520A (en)
DE (1) DE441998C (en)
FR (1) FR582663A (en)
GB (1) GB220747A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127788B2 (en) 2003-12-09 2006-10-31 Milton Wayne Tutt Conduit coupling system, tool and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE762676C (en) * 1936-12-01 1953-10-19 Siemens & Halske A G Method for manufacturing an electrode system
DE1233062B (en) * 1964-08-18 1967-01-26 Leybolds Nachfolger E Holder for a spiral-shaped glow cathode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127788B2 (en) 2003-12-09 2006-10-31 Milton Wayne Tutt Conduit coupling system, tool and method

Also Published As

Publication number Publication date
US1674520A (en) 1928-06-19
FR582663A (en) 1924-12-24
DE441998C (en) 1927-03-18

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