GB560368A - Improvements in and relating to flash lamps - Google Patents

Improvements in and relating to flash lamps

Info

Publication number
GB560368A
GB560368A GB17867/42A GB1786742A GB560368A GB 560368 A GB560368 A GB 560368A GB 17867/42 A GB17867/42 A GB 17867/42A GB 1786742 A GB1786742 A GB 1786742A GB 560368 A GB560368 A GB 560368A
Authority
GB
United Kingdom
Prior art keywords
bulb
fulminating
wires
leading
filament
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
GB17867/42A
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 GB560368A publication Critical patent/GB560368A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
    • F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

560,368. Flash lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 16, 1942, No. 17867, Convention date, Dec. 23, 1941. [Class 9 (ii)] A flash lamp comprises a bulb 10, leading-in wires 16, a filament 17 in the bulb connecting the leading-in wires, and a bead 19, 20 of fulminating material mounted between the leading-in wires remote from a portion of the bulb and arranged to be ignited by the filament, the part of the fulminating material remote from the specified portion of the bulb being provided with a thick coating 22 of material such as cellulose-acetate so that the burning particles of the fulminating material are directed on to the remote portion of the bulb referred to, so lessening the risk of cracking of the bulb. The filament may be dipped in red phosphorus and the ends 21 of the fulminating material may enclose the upper ends of the leading-in wires. The arrangement may be used in a bulb open to the air, or enclosed to contain a gas under pressure, or in a bulb where the fulminating material is the sole source of actinic light, or where the fulminating- material acts in conjunction with metal ribbon or foil enclosed in the bulb. Specification 548,297 is referred to.
GB17867/42A 1941-12-23 1942-12-16 Improvements in and relating to flash lamps Expired GB560368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US560368XA 1941-12-23 1941-12-23

Publications (1)

Publication Number Publication Date
GB560368A true GB560368A (en) 1944-03-31

Family

ID=22001739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17867/42A Expired GB560368A (en) 1941-12-23 1942-12-16 Improvements in and relating to flash lamps

Country Status (1)

Country Link
GB (1) GB560368A (en)

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