US1854988A - Electric lamp bulb - Google Patents
Electric lamp bulb Download PDFInfo
- Publication number
- US1854988A US1854988A US328762A US32876228A US1854988A US 1854988 A US1854988 A US 1854988A US 328762 A US328762 A US 328762A US 32876228 A US32876228 A US 32876228A US 1854988 A US1854988 A US 1854988A
- Authority
- US
- United States
- Prior art keywords
- lamp bulb
- electric lamp
- glass
- bulb
- fused
- 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 - Lifetime
Links
- 239000011521 glass Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- HUTDDBSSHVOYJR-UHFFFAOYSA-H bis[(2-oxo-1,3,2$l^{5},4$l^{2}-dioxaphosphaplumbetan-2-yl)oxy]lead Chemical compound [Pb+2].[Pb+2].[Pb+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O HUTDDBSSHVOYJR-UHFFFAOYSA-H 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- ZPPSOOVFTBGHBI-UHFFFAOYSA-N lead(2+);oxido(oxo)borane Chemical compound [Pb+2].[O-]B=O.[O-]B=O ZPPSOOVFTBGHBI-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Definitions
- Our invention relates to illuminating glassware and more particularly to bulbs and other enclosures for electric lamps. Still more specifically, our invention relates to inside frosted bulbs for electric lamps. According to our invention the inside surface of the bulb or other glass enclosure is covered with minute pieces of glass or other vitreous material which is united to the glass by means of a binder. According to the preferred form of our invention the binder which is used is a comparatively low fusing material which when fused becomes nearly transparent.
- the bulb 1 has a coating 2 on the inner surface thereof.
- This coating is made by mixing minutely ground pieces of glass with a binding agent which is insoluble in water but which has a comparatively lOW fusing point and which becomes nearly transparent when melted.
- binding materials are lead borate or borosilicate, and lead or sodium phosphate.
- nitrocellulose, starch, glue or rosin it is desirable to add nitrocellulose, starch, glue or rosin. The mixture is coated evenly on the inner surface of the bulb and dried. It is then heated to fuse the binding material, care being taken not to heat it high enough to soften the glass. The nitrocellulose, starch, glue or rosin will be driven off. The binding material becomes almost transparent and therefore the absorption is low While the diffusion is very good.
- An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a material of lower melting point fused to said surface.
- An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a material of lower melting point fused to said surface, said materialbeing such that when fused it is substantially transparent.
- An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a lead salt fused to said surface.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
April 19, 1932. uw ET AL 1,854,988
' ELECTRIC LAMP BULB Filed Dec. 27, 1928 .7322 VENT DR 5. KZTE' U2 :7 Fur/r5, YZ'UEHIR U EHJH 21 151-112;, 3U7 Mm THEIR. A: TOR max.
Patented Apr. 19, 1932 UNITED STATES PATENT OFFICE IKITSUZO FUWA AND YUICHIRO SHIRAISHI, OF TOKYO, JAPAN, ASSIGNORS TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK ELECTRIC LAMP BULB Application filed December 27, 1928, Serial No. 328,762, and in Japan July 14, 1928.
Our invention relates to illuminating glassware and more particularly to bulbs and other enclosures for electric lamps. Still more specifically, our invention relates to inside frosted bulbs for electric lamps. According to our invention the inside surface of the bulb or other glass enclosure is covered with minute pieces of glass or other vitreous material which is united to the glass by means of a binder. According to the preferred form of our invention the binder which is used is a comparatively low fusing material which when fused becomes nearly transparent.
In the drawing the figure shown is an elevation partially broken away of an incandescent lamp bulb made according to our invention.
As shown in the drawing, the bulb 1 has a coating 2 on the inner surface thereof. This coating is made by mixing minutely ground pieces of glass with a binding agent which is insoluble in water but which has a comparatively lOW fusing point and which becomes nearly transparent when melted. Examples of such binding materials are lead borate or borosilicate, and lead or sodium phosphate. In some cases it is desirable to add nitrocellulose, starch, glue or rosin. The mixture is coated evenly on the inner surface of the bulb and dried. It is then heated to fuse the binding material, care being taken not to heat it high enough to soften the glass. The nitrocellulose, starch, glue or rosin will be driven off. The binding material becomes almost transparent and therefore the absorption is low While the diffusion is very good.
What We claim as new and desire to secure by Letters Patent of the United States, is:
1. An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a material of lower melting point fused to said surface..
2. An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a material of lower melting point fused to said surface, said materialbeing such that when fused it is substantially transparent.
3. An electric lamp bulb having a surface thereof covered with a mixture of minute pieces of glass and a lead salt fused to said surface.
In witness whereof, we have hereunto set our hands this 5th day of December, 1928. KITSUZO FUWA. YUICHIRO SHIRAISHI.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1854988X | 1928-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1854988A true US1854988A (en) | 1932-04-19 |
Family
ID=16171813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US328762A Expired - Lifetime US1854988A (en) | 1928-07-14 | 1928-12-27 | Electric lamp bulb |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1854988A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2545896A (en) * | 1947-02-15 | 1951-03-20 | Gen Electric | Electric lamp, light diffusing coating therefor and method of manufacture |
| US2810660A (en) * | 1954-02-01 | 1957-10-22 | Westinghouse Electric Corp | Diffusing reflecting coating and method of preparing same |
| US2946911A (en) * | 1957-11-01 | 1960-07-26 | Gen Electric | Coated electric lamp |
| US3279941A (en) * | 1963-02-14 | 1966-10-18 | Corning Glass Works | Method of forming a moisture-collecting coating of porous glass |
| US4459506A (en) * | 1982-11-08 | 1984-07-10 | Premier Industrial Corporation | Incandescent illuminating device with antifragility coating |
-
1928
- 1928-12-27 US US328762A patent/US1854988A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2545896A (en) * | 1947-02-15 | 1951-03-20 | Gen Electric | Electric lamp, light diffusing coating therefor and method of manufacture |
| US2810660A (en) * | 1954-02-01 | 1957-10-22 | Westinghouse Electric Corp | Diffusing reflecting coating and method of preparing same |
| US2946911A (en) * | 1957-11-01 | 1960-07-26 | Gen Electric | Coated electric lamp |
| US3279941A (en) * | 1963-02-14 | 1966-10-18 | Corning Glass Works | Method of forming a moisture-collecting coating of porous glass |
| US4459506A (en) * | 1982-11-08 | 1984-07-10 | Premier Industrial Corporation | Incandescent illuminating device with antifragility coating |
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