GB193413A - Improvements in or relating to electric lamps - Google Patents

Improvements in or relating to electric lamps

Info

Publication number
GB193413A
GB193413A GB4606/23A GB460623A GB193413A GB 193413 A GB193413 A GB 193413A GB 4606/23 A GB4606/23 A GB 4606/23A GB 460623 A GB460623 A GB 460623A GB 193413 A GB193413 A GB 193413A
Authority
GB
United Kingdom
Prior art keywords
holder
bulb
caps
leading
parts
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
GB4606/23A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB193413A publication Critical patent/GB193413A/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
    • H01R33/97—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held
    • H01R33/971—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held for screw type coupling devices

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

193,413. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Feb. 17, 1922, [Convention date]. Holders; caps.-To render electric lamp bulbs useless alter being removed from a holder, they are provided with caps comprising two parts 2, 3. loosely screwed together, one part being rigidly connected to the bulb and each part. being connected to one of the leading-in wires 14, 15. If the bulb is removed from the holder, the part 2 of the cap remains in the holder and the leading-in wire 14 is broken. Stops 9, 10 prevent the parts 2, 3 from being screwed tightly together. Vibration of the bulb in the holder is prevented by a helical spring 6 loosely wound on a core 7 and inserted into a groove in the holder so as to bear against the cap.
GB4606/23A 1922-02-17 1923-02-16 Improvements in or relating to electric lamps Expired GB193413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL193413X 1922-02-17

Publications (1)

Publication Number Publication Date
GB193413A true GB193413A (en) 1923-08-16

Family

ID=19777996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4606/23A Expired GB193413A (en) 1922-02-17 1923-02-16 Improvements in or relating to electric lamps

Country Status (1)

Country Link
GB (1) GB193413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1023075C2 (en) * 2003-04-01 2004-10-04 Tno Electrical economy lamp has security casing foX26-A02r prevention of theft within lamp foot, provided with counter hooks extending outwards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1023075C2 (en) * 2003-04-01 2004-10-04 Tno Electrical economy lamp has security casing foX26-A02r prevention of theft within lamp foot, provided with counter hooks extending outwards

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