GB598505A - Method and apparatus for forming glass optical devices - Google Patents
Method and apparatus for forming glass optical devicesInfo
- Publication number
- GB598505A GB598505A GB28867/45A GB2886745A GB598505A GB 598505 A GB598505 A GB 598505A GB 28867/45 A GB28867/45 A GB 28867/45A GB 2886745 A GB2886745 A GB 2886745A GB 598505 A GB598505 A GB 598505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blank
- mould
- film
- glass
- contact
- 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)
Abstract
598,505. Glass, working by acids. FARNSWORTH TELEVISION & RADIO CORPORATION. Oct. 31, 1945, No. 28867. Convention date, Jan. 27. [Class 124] In a method of forming glass lenses and like optical devices, a film of one ingredient of a glass attacking composition is formed on a glass blank and a film of another ingredient of the composition is formed on the surface of a mould which is a negative of the device to be produced, the blank and mould being then brought into contact to produce a glass attacking film on the high points of the blank. As shown, a glass blank 1, which may be roughly ground to the form required, held in a cooled support 9 has a film of sulphuric acid formed on it by a perforated pipe 62, and a mould 12 coated with platinum has a film of sodium fluoride deposited on it. The mould is brought into contact with the blank by a reciprocating movement and hydrofiuoric acid, which dissolves a small quantity of the glass, is formed at the points of contact. After the separation of mould from blank, the surfaces of both are cleaned by a blast of steam through the perforated pipes 71 and 75 and the process repeated until the blank assumes the form of the mould. The sequence of operations may be controlled by an electric motor 50 driving cams 54, 55 and 80. The sulphuric acid film may be formed on the mould and the sodium fluoride film on the blank.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US598505XA | 1945-01-27 | 1945-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB598505A true GB598505A (en) | 1948-02-19 |
Family
ID=22025682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28867/45A Expired GB598505A (en) | 1945-01-27 | 1945-10-31 | Method and apparatus for forming glass optical devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB598505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468970A1 (en) * | 2003-04-16 | 2004-10-20 | Shin-Etsu Chemical Co., Ltd. | Method for fabricating a glass rod |
-
1945
- 1945-10-31 GB GB28867/45A patent/GB598505A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1468970A1 (en) * | 2003-04-16 | 2004-10-20 | Shin-Etsu Chemical Co., Ltd. | Method for fabricating a glass rod |
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