GB436167A - Improvements in electric lighting fittings - Google Patents

Improvements in electric lighting fittings

Info

Publication number
GB436167A
GB436167A GB1261434A GB1261434A GB436167A GB 436167 A GB436167 A GB 436167A GB 1261434 A GB1261434 A GB 1261434A GB 1261434 A GB1261434 A GB 1261434A GB 436167 A GB436167 A GB 436167A
Authority
GB
United Kingdom
Prior art keywords
lamp
contact
contacts
power
bell
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
GB1261434A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1261434A priority Critical patent/GB436167A/en
Publication of GB436167A publication Critical patent/GB436167A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

436,167. Electric - lamp holders. GENERAL ELECTRIC CO., Ltd., and RICHARDS, S. W., Magnet House, Kingsway, London. April 26, 1934, No. 12614. [Class 39 (ii)] [See also Group XXXVI] A fitting for connecting two lengths of supply cable and for supporting a lamp connected to the supply, comprises a pair of double-ended socket contacts 8 for the power line, and a third double-ended socket contact 10 for a pilot line controlling a remote switch. The plug member 23 attached to each cable end 28 carries corresponding pin contacts 25, the pin for the pilot line being longer than the pins for the power lines and the socket 10 of the pilot line being short so as to break contact with its pin before contact is broken between the longer power sockets 8 and their pins 25. Breaking of the pilot circuit opens the remote switch so that the power couplings are not live when their contacts separate. A lamp-holder body 13 is fixed in a recess 11 in the insulating body 7 of the coupling by screws 14 that enter central blocks 9 integral with the power sockets 8 and form the lamp-holder contacts. The lamp 16 is held against these screws 14 by a spring ring 15. The screw ring 19 that secures a glass bell 17 over the lamp may grip the bell against a fixed ring 20 as shown, or against a spring- mounted platform that carries the lampholder 12 so that if the bell is removed the springs press the holder downwards, severing contact between its terminals and the contact studs then provided on the body 7.
GB1261434A 1934-04-26 1934-04-26 Improvements in electric lighting fittings Expired GB436167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1261434A GB436167A (en) 1934-04-26 1934-04-26 Improvements in electric lighting fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1261434A GB436167A (en) 1934-04-26 1934-04-26 Improvements in electric lighting fittings

Publications (1)

Publication Number Publication Date
GB436167A true GB436167A (en) 1935-10-07

Family

ID=10007898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1261434A Expired GB436167A (en) 1934-04-26 1934-04-26 Improvements in electric lighting fittings

Country Status (1)

Country Link
GB (1) GB436167A (en)

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