GB635981A - Improvements in or relating to supporting means for electrically heated filaments - Google Patents

Improvements in or relating to supporting means for electrically heated filaments

Info

Publication number
GB635981A
GB635981A GB30742/46A GB3074246A GB635981A GB 635981 A GB635981 A GB 635981A GB 30742/46 A GB30742/46 A GB 30742/46A GB 3074246 A GB3074246 A GB 3074246A GB 635981 A GB635981 A GB 635981A
Authority
GB
United Kingdom
Prior art keywords
filaments
rods
sets
spreaders
supporting means
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
GB30742/46A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 NL74391D priority Critical patent/NL74391C/xx
Priority to FR957229D priority patent/FR957229A/fr
Priority to BE477333D priority patent/BE477333A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB30742/46A priority patent/GB635981A/en
Priority to ES0179745A priority patent/ES179745A1/en
Priority to US788785A priority patent/US2521714A/en
Publication of GB635981A publication Critical patent/GB635981A/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)
  • Discharge Lamp (AREA)

Abstract

635,981. Supports for electric incandescent lamp filaments. STANDARD TELEPHONES & CABLES, Ltd., and GOODCHILD, F. D. Oct. 16, 1946, No. 30742. [Class 39 (ii)] [Also in Group XL (a)] Supporting means for the filament structure of a high power electron discharge dedevice or incandescent lamp in which the filaments are arranged in two interspaced sets of three and are secured to spreaders 14, 15 at one end and to a common spreader 19 at the other end, comprises two sets of rods 71, 91 of unequal length secured at one end to the spreaders 14, 15, and at the other end to supports 6, 8 positioned in different planes, the disc support 8 being resilient to permit relative thermal movement of the sets of rods, and the sets of rods are fixed to two platforms 12, 13 which are insulatively locked together so as to prevent differential thermal expansion of the filaments and connectors below the platforms 12, 13. The rods are in two partsone part 7, 9 of copper and the other part 7,1 91, of molybdenum. The filaments 18 are carried from spreaders 14, 15, by anchors 16, 17. The upper end of the structure may provide co-axial cathode leads 1, 4 arranged as described in Specification 573,170, [Group XL]. The disc 8 may be slotted as shown so as to provide greater flexibility. The molybdenum members 19 may be secured together by the member 20 which slides in a collar (not shown) fixed by insulating means to grid support rods (not shown) so as to take up thermal expansion of the cathode structure as a whole. In operation the discharge device is mounted vertically so that the filaments 18 are held in tension under gravity. The Provisional Specification in addition refers to supporting means for a single filament.
GB30742/46A 1946-10-16 1946-10-16 Improvements in or relating to supporting means for electrically heated filaments Expired GB635981A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL74391D NL74391C (en) 1946-10-16
FR957229D FR957229A (en) 1946-10-16
BE477333D BE477333A (en) 1946-10-16
GB30742/46A GB635981A (en) 1946-10-16 1946-10-16 Improvements in or relating to supporting means for electrically heated filaments
ES0179745A ES179745A1 (en) 1946-10-16 1947-09-16 IMPROVEMENTS RELATED TO ELECTRONIC DISCHARGE DEVICES
US788785A US2521714A (en) 1946-10-16 1947-11-29 Filament support structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30742/46A GB635981A (en) 1946-10-16 1946-10-16 Improvements in or relating to supporting means for electrically heated filaments

Publications (1)

Publication Number Publication Date
GB635981A true GB635981A (en) 1950-04-19

Family

ID=10312422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30742/46A Expired GB635981A (en) 1946-10-16 1946-10-16 Improvements in or relating to supporting means for electrically heated filaments

Country Status (6)

Country Link
US (1) US2521714A (en)
BE (1) BE477333A (en)
ES (1) ES179745A1 (en)
FR (1) FR957229A (en)
GB (1) GB635981A (en)
NL (1) NL74391C (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965338A (en) * 1930-05-21 1934-07-03 Western Electric Co Thermionic discharge device
US2226680A (en) * 1939-05-09 1940-12-31 Fed Telegraph Co Vacuum tube cathode support
US2298608A (en) * 1939-11-07 1942-10-13 Sperry Gyroscope Co Inc Memory type recorder
US2317222A (en) * 1941-03-20 1943-04-20 Bell Telephone Labor Inc Electron discharge device
US2399004A (en) * 1943-02-12 1946-04-23 Gen Electric Electric discharge device and method of fabrication
US2419124A (en) * 1943-11-10 1947-04-15 Westinghouse Electric Corp Insulating means for metallic spacers in electron discharge devices
US2404042A (en) * 1944-10-12 1946-07-16 Westinghouse Electric Corp Electron discharge device

Also Published As

Publication number Publication date
BE477333A (en)
ES179745A1 (en) 1947-11-01
US2521714A (en) 1950-09-12
NL74391C (en)
FR957229A (en) 1950-02-17

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