GB810910A - Improvements in or relating to methods of frosting part of the inner wall of a hollow article made from hard glass - Google Patents
Improvements in or relating to methods of frosting part of the inner wall of a hollow article made from hard glassInfo
- Publication number
- GB810910A GB810910A GB18399/57A GB1839957A GB810910A GB 810910 A GB810910 A GB 810910A GB 18399/57 A GB18399/57 A GB 18399/57A GB 1839957 A GB1839957 A GB 1839957A GB 810910 A GB810910 A GB 810910A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall
- bulb
- frosted
- glass
- frosting
- 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
-
- 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
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
810,910. Electric lamp bulbs. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 11, 1957 [June 13, 1956], No. 18399/57. Drawings to Specification. Class 39(2) [Also in Group XVI] A method of frosting part of the inside of a hollow hard glass lamp bulb, comprises pouring into the bulb a frosting liquid at a temperature lower than that at which it can etch the glass, and heating from the outside that part of the wall of the bulb which is to be frosted to a temperature to enable the etching to take place. The glass has a co-efficient of linear expansion of from 35 to 55 x 10<SP>-7</SP> measured between 20‹ and 300‹ C. The liquid may be acid fluoride, the temperature at introduction 20‹ C., and the wall be heated to 70‹ or 80‹ C. The bulb may be partly inserted into a bath of hot liquid, or into a radiation furnace containing a plurality of electric thermal radiators, one wall of the furnace having an aperture which when the bulb is inserted corresponds to the boundary of the part to be frosted. The bulb may be provided with small frosted portions in the shape of letters, figures or other designs, by heating the wall with a heated stamp of the design shape, or by applying heat to a part of the wall covered with a mask having the design cut out thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL810910X | 1956-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810910A true GB810910A (en) | 1959-03-25 |
Family
ID=19838667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18399/57A Expired GB810910A (en) | 1956-06-13 | 1957-06-11 | Improvements in or relating to methods of frosting part of the inner wall of a hollow article made from hard glass |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1067990B (en) |
| GB (1) | GB810910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220202B (en) * | 1988-07-02 | 1992-04-08 | Emi Plc Thorn | Linear filament lamp and tubular quartz glassware used in the manufacture of a linear filament lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE891601C (en) * | 1944-01-13 | 1953-10-01 | Aeg | Process for marking hard glass bulbs, especially bulbs for electron beam tubes |
-
0
- DE DENDAT1067990D patent/DE1067990B/en active Pending
-
1957
- 1957-06-11 GB GB18399/57A patent/GB810910A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220202B (en) * | 1988-07-02 | 1992-04-08 | Emi Plc Thorn | Linear filament lamp and tubular quartz glassware used in the manufacture of a linear filament lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1067990B (en) | 1959-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1435132A (en) | Heat transfer device | |
| GB1116073A (en) | Method of separating glass frit sealed glass parts | |
| GB520624A (en) | Improvements in or relating to electric incandescent lamps or discharge tubes | |
| SE7709151L (en) | COOLABLE INFRARED RADIATION ELEMENT | |
| GB810910A (en) | Improvements in or relating to methods of frosting part of the inner wall of a hollow article made from hard glass | |
| US3183721A (en) | Process for forming a thermometer | |
| JPS6477889A (en) | Positive characteristic thermistor exothermic device | |
| JPS646343A (en) | Manufacture of fluorescent lamp | |
| JPS56120066A (en) | Fluorescent lamp | |
| CN218931948U (en) | Heating device for producing optical window sheet | |
| JPS57176661A (en) | Low-temperature fluorescent lamp | |
| JPS5678436A (en) | Device for bending glass bulb | |
| JPS5671269A (en) | Metallic vapor discharge lamp | |
| GB846027A (en) | Improvements in electric thermostats | |
| GB287453A (en) | Improvements in or relating to thermostatic switches | |
| GB450888A (en) | Improvements in or relating to temperature indicators | |
| JPS57176643A (en) | Heating chip-off furnace for cathode-ray tube manufacture | |
| JPS54118673A (en) | Low pressure mercury vapor discharge lamp | |
| JPS57176644A (en) | Manufacture of fluorescent lamp | |
| JPS56112039A (en) | Manufacture of fluorescent lamp | |
| JPS52111257A (en) | Heating system | |
| JPS5452883A (en) | Water-repellent-cement-fitted tubes and spheres | |
| JPS5530107A (en) | Explosion-proof braun tube and reinforcing method same | |
| JPS5684846A (en) | Manufacture and manufacturing device for bulb | |
| GB1080352A (en) | Improvements in or relating to electron discharge devices |