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GB582547A - Improvements in and relating to electric lamp signalling units - Google Patents

Improvements in and relating to electric lamp signalling units

Info

Publication number
GB582547A
GB582547A GB8703/44A GB870344A GB582547A GB 582547 A GB582547 A GB 582547A GB 8703/44 A GB8703/44 A GB 8703/44A GB 870344 A GB870344 A GB 870344A GB 582547 A GB582547 A GB 582547A
Authority
GB
United Kingdom
Prior art keywords
relating
battery
lamp
electric lamp
signalling units
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
GB8703/44A
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 GB582547A publication Critical patent/GB582547A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

582,547. Battery lamps. BRITISH THOMSONHOUSTON CO., Ltd. May 8, 1944, No. 8703. Convention date, May 11, 1943. [Classes 39 (ii) and 75 (iv)] A signal light comprises a lamp 10, having a thermostatic element 29 inside the bulb which breaks the circuit when the filament 25 lights up, mounted in a transparent watertight casing 22. When attached conductors are plugged into a battery the lamp flashes continuously for the life of the battery. The lamp casing is provided with a dome fastener 20 for attachment to the user.
GB8703/44A 1943-05-11 1944-05-08 Improvements in and relating to electric lamp signalling units Expired GB582547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US582547XA 1943-05-11 1943-05-11

Publications (1)

Publication Number Publication Date
GB582547A true GB582547A (en) 1946-11-20

Family

ID=22015645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8703/44A Expired GB582547A (en) 1943-05-11 1944-05-08 Improvements in and relating to electric lamp signalling units

Country Status (1)

Country Link
GB (1) GB582547A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354576A (en) * 1999-09-21 2001-03-28 Graeme Quantrill Warning light attached to the head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354576A (en) * 1999-09-21 2001-03-28 Graeme Quantrill Warning light attached to the head

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