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GB420783A - Improvements in and relating to electric lamps and the like - Google Patents

Improvements in and relating to electric lamps and the like

Info

Publication number
GB420783A
GB420783A GB11319/34A GB1131934A GB420783A GB 420783 A GB420783 A GB 420783A GB 11319/34 A GB11319/34 A GB 11319/34A GB 1131934 A GB1131934 A GB 1131934A GB 420783 A GB420783 A GB 420783A
Authority
GB
United Kingdom
Prior art keywords
relating
electric lamps
per cent
sulphur
caps
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
GB11319/34A
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 GB420783A publication Critical patent/GB420783A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap

Abstract

Caps for electric incandescent lamps and the like are made of an alloy consisting of 67,5-71,5 per cent of iron, 26-30 per cent of chromium, with small proportions of manganese, nickel, silicon, carbon, sulphur, and phosphorus.
GB11319/34A 1933-04-15 1934-04-14 Improvements in and relating to electric lamps and the like Expired GB420783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US666334A US1988290A (en) 1933-04-15 1933-04-15 Incandescent lamp and similar device

Publications (1)

Publication Number Publication Date
GB420783A true GB420783A (en) 1934-12-07

Family

ID=24673762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11319/34A Expired GB420783A (en) 1933-04-15 1934-04-14 Improvements in and relating to electric lamps and the like

Country Status (5)

Country Link
US (1) US1988290A (en)
BE (1) BE402627A (en)
DE (1) DE627962C (en)
FR (1) FR771643A (en)
GB (1) GB420783A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751305C (en) * 1938-08-14 1953-02-23 Telefunken Gmbh Power feed through for electric light bulbs and discharge vessels
DE1030455B (en) * 1951-05-25 1958-05-22 British Thomson Houston Co Ltd Electric light bulb for headlights
US3020437A (en) * 1959-02-09 1962-02-06 John J Horan Elastic lamps, principles, constructions, mountings and methods
GB943534A (en) * 1959-06-29 1963-12-04 Hunting Eng Ltd Improvements relating to electric lamp bulbs
NL257189A (en) * 1960-10-24
CA2147517C (en) * 1994-04-25 2006-03-21 Walter Newman Lampholder with mogul base

Also Published As

Publication number Publication date
US1988290A (en) 1935-01-15
BE402627A (en)
FR771643A (en) 1934-10-13
DE627962C (en) 1936-03-26

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