GB549743A - Improvements in electric lighting fittings - Google Patents

Improvements in electric lighting fittings

Info

Publication number
GB549743A
GB549743A GB11032/41A GB1103241A GB549743A GB 549743 A GB549743 A GB 549743A GB 11032/41 A GB11032/41 A GB 11032/41A GB 1103241 A GB1103241 A GB 1103241A GB 549743 A GB549743 A GB 549743A
Authority
GB
United Kingdom
Prior art keywords
casings
reflector
fitted
section
electric light
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
GB11032/41A
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.)
FRANK WIDNALL
British Thomson Houston Co Ltd
Original Assignee
FRANK WIDNALL
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 FRANK WIDNALL, British Thomson Houston Co Ltd filed Critical FRANK WIDNALL
Priority to GB11032/41A priority Critical patent/GB549743A/en
Publication of GB549743A publication Critical patent/GB549743A/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
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/009—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps the support means engaging the vessel of the source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V27/00—Cable-stowing arrangements structurally associated with lighting devices, e.g. reels 
    • F21V27/02—Cable inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/02—Cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Abstract

549,743. Electric light fittings. BRITISH THOMSON-HOUSTON CO., Ltd., and WIDNALL, F. Aug. 29, 1941, No.11032. [Class 75 (iv)] In an electric light fitting for use in an atmosphere containing explosive dust the ends of the tubular light source 10 project through gaskets 11 into dust and explosion proof casings 1. The casings are fitted with nipples 7 to receive the conduit through which flexible conductors 8 are led to the lamp 10. The bases of the casings are fitted with removable covers 5. The casings may be of simular cross-section to the reflector 2 the lower part of which is covered by a wire screen 12 or closed by toughened glass or transparent methyl-methacrylate resin. In another construction tubular end casings of smaller cross section than the reflector are connected by metal straps to a framework supporting the reflector.
GB11032/41A 1941-08-29 1941-08-29 Improvements in electric lighting fittings Expired GB549743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11032/41A GB549743A (en) 1941-08-29 1941-08-29 Improvements in electric lighting fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11032/41A GB549743A (en) 1941-08-29 1941-08-29 Improvements in electric lighting fittings

Publications (1)

Publication Number Publication Date
GB549743A true GB549743A (en) 1942-12-04

Family

ID=9978796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11032/41A Expired GB549743A (en) 1941-08-29 1941-08-29 Improvements in electric lighting fittings

Country Status (1)

Country Link
GB (1) GB549743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644027A (en) * 1949-09-06 1953-06-30 Columbia Electric And Mfg Comp Outdoor fixture for tubular lights
US2683257A (en) * 1950-01-09 1954-07-06 Gasser-Steiner Ernst Holder for fluorescent tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644027A (en) * 1949-09-06 1953-06-30 Columbia Electric And Mfg Comp Outdoor fixture for tubular lights
US2683257A (en) * 1950-01-09 1954-07-06 Gasser-Steiner Ernst Holder for fluorescent tubes

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