GB695081A - Improvements in electric incandescent lamps - Google Patents

Improvements in electric incandescent lamps

Info

Publication number
GB695081A
GB695081A GB24448/51A GB2444851A GB695081A GB 695081 A GB695081 A GB 695081A GB 24448/51 A GB24448/51 A GB 24448/51A GB 2444851 A GB2444851 A GB 2444851A GB 695081 A GB695081 A GB 695081A
Authority
GB
United Kingdom
Prior art keywords
collodion
colouring
silicone resin
bulb
getter
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
GB24448/51A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB695081A publication Critical patent/GB695081A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01K1/325—Reflecting coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/183—Composition or manufacture of getters
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
    • H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/22—Exhausting, degassing, filling, or cleaning vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Cookers (AREA)
  • Discharge Lamp (AREA)

Abstract

695,081. Electric incandescent lamps. EGYESULT IZZOLAMPA ES VILLAMOSSAGI, R. T. Oct. 19, 1951 [April 26, 1951], No. 24448/51. Class 39(ii) Electric incandescent lamps are provided with an internal coloured coating comprising at least one inorganic colouring substance capable of acting as a getter, the inorganic colouring substance being in the form of granules the size of which is of the order of 0.1 to 10 microns. Preferable examples of such substances are:-titanium white. iron oxide black, cadmium selenide and the like. More. than one colouring substance may be employed, at least one of which acts also as a getter material, a preferable example comprising silicic acid together with a colouring material acting as a getter. In an example the colouring material ground to granules, preferably of about 0.3-3 microns in size, is mixed with collodion, or a synthetic resin. or collodion and one or more synthetic resins such as a polyvinyl or silicone resin in a solvent. Thus, titanium white is ground to granules of 2-2.5 microns and dispersed in collodion dissolved in butyl acetate. The dispersion is poured into a lamp bulb and, spread over the inner surface, e.g. by shaking the bulb or stirring the liquid to produce a uniform coating. After pouring out the excess liquid the bulb is heated to a temperature of about 150-160‹C to evaporate the butyl acetate, and finally heated to about 450‹C to decompose and burn the collodion. In a further example cadmium selenide is used as the colouring matter and getter material, and a mixture of collodion and a silicone resin as a binding agent. After heating the I coating to remove the solvent it is heated to 480‹C to convert the main part of the silicone resin to silica. In a further embodiment of the invention the binding agent consists only of silicone resin dissolved, for example, in toluene. One or more additional getters, e.g. phosphorus or the like, may be arranged in known manner inside the bulb. Krypton or xenon, or a mixture of those two gases, may be used as the filling gas.
GB24448/51A 1951-04-26 1951-10-19 Improvements in electric incandescent lamps Expired GB695081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU306186X 1951-04-26

Publications (1)

Publication Number Publication Date
GB695081A true GB695081A (en) 1953-08-05

Family

ID=10978737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24448/51A Expired GB695081A (en) 1951-04-26 1951-10-19 Improvements in electric incandescent lamps

Country Status (5)

Country Link
AT (1) AT189282B (en)
CH (1) CH306186A (en)
DE (1) DE977222C (en)
GB (1) GB695081A (en)
NL (1) NL165970B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320460A (en) * 1964-01-02 1967-05-16 Sylvania Electric Prod Electric lamp coating comprising agglomerates of silica coated with a pigment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081709A (en) * 1975-11-20 1978-03-28 General Electric Company Electrostatic coating of silica powders on incandescent bulbs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE715921C (en) * 1935-05-29 1942-01-09 Philips Patentverwaltung Process for the production of fluorescent screens
GB532783A (en) * 1938-09-29 1941-01-30 Westinghouse Electric Int Co Improved method of coating the interior surface of the envelopes of electric lamps
US2290186A (en) * 1940-09-06 1942-07-21 Hygrade Sylvania Corp Luminescent coating for electric lamps
US2545896A (en) * 1947-02-15 1951-03-20 Gen Electric Electric lamp, light diffusing coating therefor and method of manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320460A (en) * 1964-01-02 1967-05-16 Sylvania Electric Prod Electric lamp coating comprising agglomerates of silica coated with a pigment

Also Published As

Publication number Publication date
CH306186A (en) 1955-03-31
DE977222C (en) 1965-06-24
NL165970B (en)
AT189282B (en) 1957-03-11

Similar Documents

Publication Publication Date Title
GB974880A (en) A process for the production of mixed granulates from carbon black and light coloured, wet precipitated fillers
GB695081A (en) Improvements in electric incandescent lamps
GB1340351A (en) Method for the preparation of fusible charge batches
US1659158A (en) Apparatus for dispersing irritants
GB524854A (en) Improvements in and relating to fluorescent substances
KR840000958A (en) Plastic member for SOHO room
US2791114A (en) Flash lamp and ignition means therefor
SU58817A1 (en) Method of deposition of mineral phosphors on the inner walls of electric lamps
KR920012395A (en) Method of producing pigmented phosphor
GB993085A (en) Moisture indicator for photoflash lamps
US3365323A (en) Stabilized red pigment filter coating in a fluorescent lamp
US1454842A (en) Glass tile for covering walls
JPS5243437A (en) Electrophotographic light sensitive material
SU132748A1 (en) Method of producing putty
SU1705249A1 (en) Cover composition for pipe electric heater hermetic sealing
KR960022324A (en) Method for producing liquid far infrared ceramic radiator and composition thereof
US2529245A (en) Insecticide diffuser
SE8400941L (en) SET UP AND DEVICE FOR BURNING THE FUEL
JPS535088A (en) Pigment-coated fluorescent substance and production thereof
GB731414A (en) Improvements in or relating to electric incandescent lamps
RU2092509C1 (en) Aluminium paste
JPS5644038A (en) Adsorbent
USRE9935E (en) Paul jablochkoff
KR100381260B1 (en) A method of manufacturing the charcoal pack-crystal applicable to ion generation
ES8105766A1 (en) Procedure for obtaining a luminous and relief paint (Machine-translation by Google Translate, not legally binding)