GB684031A - Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices - Google Patents

Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices

Info

Publication number
GB684031A
GB684031A GB3238049A GB3238049A GB684031A GB 684031 A GB684031 A GB 684031A GB 3238049 A GB3238049 A GB 3238049A GB 3238049 A GB3238049 A GB 3238049A GB 684031 A GB684031 A GB 684031A
Authority
GB
United Kingdom
Prior art keywords
quartz
electrode
electric lamps
foil
structures
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
GB3238049A
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.)
HARRY WYNDHAM LISTER CUMMING
Siemens Electric Lamps and Supplies Ltd
Original Assignee
HARRY WYNDHAM LISTER CUMMING
Siemens Electric Lamps and Supplies 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 HARRY WYNDHAM LISTER CUMMING, Siemens Electric Lamps and Supplies Ltd filed Critical HARRY WYNDHAM LISTER CUMMING
Priority to GB3238049A priority Critical patent/GB684031A/en
Publication of GB684031A publication Critical patent/GB684031A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

684.031. Leading-in conductors. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and CUMMING, H. W. L. Dec. 18, 1950 [Dec. 16, 1949], No. 32380/49. Class 39(ii) [Also in Group XL(a)] In a quartz incandescent lamp, the filament 12 is electrically. connected through two steel members 9, 10 to the respective layers 13, 14 of molybdenum foil forming the lead-in conductors. These members 9, 10, which may be of mild steel, but preferably of stainless or silver steel are of semi-circular section and separated by a quartz part 11. They abut against the inner quartz member 4, round which is wrapped the two electrically separated layers of foil 13, 14 which ultimately connect to external terminals. The quartz envelope 1 is fused on to the foil-surrounded quartz part 4 to form the hermetic seal. Fig. 2 (not shown) is a modified form having a single lead-in path to one electrode of a discharge lamp.
GB3238049A 1949-12-16 1949-12-16 Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices Expired GB684031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3238049A GB684031A (en) 1949-12-16 1949-12-16 Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3238049A GB684031A (en) 1949-12-16 1949-12-16 Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices

Publications (1)

Publication Number Publication Date
GB684031A true GB684031A (en) 1952-12-10

Family

ID=10337705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3238049A Expired GB684031A (en) 1949-12-16 1949-12-16 Improvements relating to the electrode and current leading-in structures of electric lamps and kindred devices

Country Status (1)

Country Link
GB (1) GB684031A (en)

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