GB303114A - Improvements in and relating to incandescent electric lamps and mountings therefor - Google Patents

Improvements in and relating to incandescent electric lamps and mountings therefor

Info

Publication number
GB303114A
GB303114A GB38195/28A GB3819528A GB303114A GB 303114 A GB303114 A GB 303114A GB 38195/28 A GB38195/28 A GB 38195/28A GB 3819528 A GB3819528 A GB 3819528A GB 303114 A GB303114 A GB 303114A
Authority
GB
United Kingdom
Prior art keywords
filament
bulb
relating
main filaments
electric lamps
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
GB38195/28A
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 GB303114A publication Critical patent/GB303114A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/46—Two-pole devices for bayonet type base
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/003—Compounds containing elements of Groups 4 or 14 of the Periodic Table without C-Metal linkages
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

303,114. British Thomson-Houston Co., Ltd., (Assignees of Ceader, J. D., and Severin, C.). Dec. 28, 1927, [Convention date]. Multiple-filament lamps ; caps; holders.-To ensure that a multiple-filament bulb for vehicle headlights &c. shall be mounted in only one position with respect to the reflector, the bayonet pins 23, 24 of the bulb cap are located at different distances from the end of the cap and the bayonet slots 26, 27 of the holder are of different lengths to receive the pins. The lamps described comprise two main filaments 13, 14 and a lowpower filament 15 to give a parking light. In the form shown in Fig. 1, the filament 14 is placed on the axis of the bulb and the filament 15 is at right-angles to the main filaments, and in the form shown in Fig. 3, the main filaments are placed on opposite sides of the axis and the filament 15 is inclined to them.
GB38195/28A 1927-12-28 1928-12-27 Improvements in and relating to incandescent electric lamps and mountings therefor Expired GB303114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US243107A US1788231A (en) 1927-12-28 1927-12-28 Incandescent lamp and mounting therefor

Publications (1)

Publication Number Publication Date
GB303114A true GB303114A (en) 1930-01-02

Family

ID=22917375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38195/28A Expired GB303114A (en) 1927-12-28 1928-12-27 Improvements in and relating to incandescent electric lamps and mountings therefor

Country Status (5)

Country Link
US (1) US1788231A (en)
DE (1) DE477580C (en)
FR (1) FR666477A (en)
GB (1) GB303114A (en)
NL (2) NL24671C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963536C (en) * 1953-02-10 1957-05-09 Dr Julius Karl Patten Multi-filament motor vehicle headlight bulb which emits light exclusively to the lower half-shell of a parabolic headlight reflector
US2885589A (en) * 1956-08-08 1959-05-05 Tung Sol Electric Inc Multi-voltage lamp
GB1391704A (en) * 1972-04-14 1975-04-23 Thorn Electrical Ind Ltd Lamp pinch seals

Also Published As

Publication number Publication date
NL24671C (en) 1900-01-01
FR666477A (en) 1929-10-02
DE477580C (en) 1929-06-11
NL44107C (en) 1900-01-01
US1788231A (en) 1931-01-06

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