GB765314A - Improvements in or relating to flash light lamps - Google Patents

Improvements in or relating to flash light lamps

Info

Publication number
GB765314A
GB765314A GB4153/55A GB415355A GB765314A GB 765314 A GB765314 A GB 765314A GB 4153/55 A GB4153/55 A GB 4153/55A GB 415355 A GB415355 A GB 415355A GB 765314 A GB765314 A GB 765314A
Authority
GB
United Kingdom
Prior art keywords
dispersion
bulb
softener
holder
diethylene glycol
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
GB4153/55A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB765314A publication Critical patent/GB765314A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Abstract

765,314. Photographic flash lamps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 11, 1955 [Feb. 13, 1954], No. 4153/55. Class 9 (2). A photographic flash lamp having a closed glass envelope containing actinically-burning material, ignition mechanism and a gas filling is given an external coating of a thermo-plastic synthetic resin of a thickness between 0.5 and 1.5 mms. The coating is formed by immersing the envelope in a dispersion of thermo-plastic synthetic resin particles in a softener or in a liquid containing a softener and subsequently solidifying the deposit on the envelope by heating. To form the layer in a single immersion, a dispersion is used having a viscosity between 250 and 1000 poises measured at 20‹C. The dispersion may consist of polyvinyl chloride particles in an organic liquid constituted by a softener and a hydrocarbon or hydrocarbon mixture having a boiling range between 200 and 245 ‹C. Suitable softeners given are tricresyl phosphate, dioctyl phthalate, dinonyl phthalate, diethylene glycol benzoate, diethylene glycol dibenzoate, diethylene glycol monomethyl ether phthalate, dioctyl sebacate and dioctyl adipate. In an example, a glass tube 1, Fig. 1, in mould 2 is heated, then blown to the shape shown in Fig. 5 as in Specification 546,189. After assembly of the lamp components and filling with oxygen under super atmospheric pressure the lamp is placed in a holder and immersed in a polyvinyl chloride dispersion at 10 cm./min. and lifted out at 2.5 cms./min. until the bulb is above the liquid. The rate of lift is then increased 40 times and subsequently the bulb still in the holder 4, Fig. 5, is inverted to distribute the liquid uniformly over the glass. The coated bulb is then placed in a furnace 10 at 215‹C. and rotated. After 3 minutes, the holder is removed from the furnace and the bulb allowed to cool. Organic tin compounds disclosed in U.S.A. Specification 2,618,625, may be added to the dispersion to prevent discolouration on heatings. Lamps which are to be used for the examination of internal organs may be given an internal coating with a high molecular weight polymer of an organo-silicon compound such as polyalkyl siloxanes.
GB4153/55A 1954-02-13 1955-02-11 Improvements in or relating to flash light lamps Expired GB765314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL765314X 1954-02-13

Publications (1)

Publication Number Publication Date
GB765314A true GB765314A (en) 1957-01-09

Family

ID=19827597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4153/55A Expired GB765314A (en) 1954-02-13 1955-02-11 Improvements in or relating to flash light lamps

Country Status (4)

Country Link
US (1) US2868670A (en)
DE (1) DE957273C (en)
FR (1) FR1134319A (en)
GB (1) GB765314A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210420A (en) * 1958-09-26 1960-03-08 Verriere De La Brie & Du Bugey Method and device for coating objects, in particular glass, by immersion in a liquid which sets when the temperature rises
US3341353A (en) * 1959-08-21 1967-09-12 Owens Illinois Inc Detearing method
DE1283421B (en) * 1960-03-14 1968-11-21 Wacker Chemie Gmbh Production of protective and insulating coatings on glass, ceramic and plastic vessels, pipes and devices
US3220952A (en) * 1962-06-28 1965-11-30 Eastman Kodak Co Spectral energy converting blue lacquer for photoflash lamps
DE1179459B (en) * 1962-11-09 1964-10-08 Patra Patent Treuhand Splinter protection for flashlight lamps
CA1081161A (en) * 1976-06-24 1980-07-08 Siegfried H. Schroeter Method for coating photoflash lamps
US4497756A (en) * 1981-10-05 1985-02-05 Gte Products Corporation Method of making a photoflash article using injection molding
US4506189A (en) * 1981-10-10 1985-03-19 Nolan James D Methods of and apparatus for coating the glass envelope and predetermined portions of the end caps of a fluorescent lamp
US4507332A (en) * 1982-08-02 1985-03-26 Nolan James D Methods for coating the glass envelope and predetermined portions of the end caps of a fluorescent lamp

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851509A (en) * 1929-10-28 1932-03-29 Crawford Mcgregor & Canby Co Method of coating articles with pyroxylin
US2114201A (en) * 1935-05-11 1938-04-12 Gen Electric Flash lamp
US2258708A (en) * 1940-01-02 1941-10-14 Du Pont Glass article
US2306563A (en) * 1940-02-26 1942-12-29 Gen Electric Flash lamp
US2333725A (en) * 1941-05-14 1943-11-09 Westinghouse Electric & Mfg Co Photoflash casing
GB560776A (en) * 1942-07-15 1944-04-20 Philips Nv Improvements in or relating to flashlight lamps
US2386672A (en) * 1943-12-11 1945-10-09 Wabash Appliance Corp Photoflash lamp
BE467151A (en) * 1944-06-27
US2664364A (en) * 1949-02-15 1953-12-29 Melvin A Thom Process for drying coated resistors
DE819772C (en) * 1949-03-05 1951-11-05 Philips Nv Flash lamp
DE880692C (en) * 1951-09-05 1953-06-22 Patra Patent Treuhand Flash lamp

Also Published As

Publication number Publication date
FR1134319A (en) 1957-04-10
US2868670A (en) 1959-01-13
DE957273C (en) 1957-01-31

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