GB484587A - Improvements in or relating to the manufacture of optical glass - Google Patents
Improvements in or relating to the manufacture of optical glassInfo
- Publication number
- GB484587A GB484587A GB30311/36A GB3031136A GB484587A GB 484587 A GB484587 A GB 484587A GB 30311/36 A GB30311/36 A GB 30311/36A GB 3031136 A GB3031136 A GB 3031136A GB 484587 A GB484587 A GB 484587A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- pot
- block
- temperature
- nov
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000005304 optical glass Substances 0.000 title abstract 2
- 239000011521 glass Substances 0.000 abstract 9
- 238000000137 annealing Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 206010040925 Skin striae Diseases 0.000 abstract 1
- 230000001788 irregular Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
- C03B25/02—Annealing glass products in a discontinuous way
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
484,587. Glass manufacture. SENDLINGER OPTISCHE GLASWERKE GES. Nov. 6, 1936, No. 30311. Convention date, Nov. 7, 1935. [Class 56] Relates to a method of obtaining the contents of a pot of optical glass in the form of a large block instead of irregular pieces. According to the invention, the pot of homogenized glass, after removal from the furnace, has the bottom and sides cooled rapidly while the cooling of the surface of the glass is retarded in such a manner that solidification of the glass takes place from the sides and bottom of the pot. This is effected by placing a heating-plate, or a pre-heated insulating plate over the surface of the glass. When the temperature of the side and bottom layers of glass has reached the lower annealing temperature, the hotter middle portion is allowed to cool and the whole pot is then placed in an electricallyheated chamber and kept at the lower annealing temperature until the temperature within the block of glass is equalized. After further cooling, the block of glass is divided into pieces of definite size free from striae by any suitable means, such as by passing slowly through the glass a platinum wire heated to incandescence.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE484587X | 1935-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484587A true GB484587A (en) | 1938-05-06 |
Family
ID=6543146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30311/36A Expired GB484587A (en) | 1935-11-07 | 1936-11-06 | Improvements in or relating to the manufacture of optical glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB484587A (en) |
-
1936
- 1936-11-06 GB GB30311/36A patent/GB484587A/en not_active Expired
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