GB695081A - Improvements in electric incandescent lamps - Google Patents
Improvements in electric incandescent lampsInfo
- 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
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.
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)
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)
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)
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 |
-
0
- NL NL7011617.A patent/NL165970B/en unknown
-
1951
- 1951-10-16 AT AT189282D patent/AT189282B/en active
- 1951-10-19 GB GB24448/51A patent/GB695081A/en not_active Expired
- 1951-11-01 DE DEE4538A patent/DE977222C/en not_active Expired
- 1951-11-10 CH CH306186D patent/CH306186A/en unknown
Cited By (1)
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 |
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