GB693285A - Improvements relating to the manufacture of optical windows for the envelopes of electron discharge devices especially cathode ray tubes - Google Patents
Improvements relating to the manufacture of optical windows for the envelopes of electron discharge devices especially cathode ray tubesInfo
- Publication number
- GB693285A GB693285A GB524850A GB524850A GB693285A GB 693285 A GB693285 A GB 693285A GB 524850 A GB524850 A GB 524850A GB 524850 A GB524850 A GB 524850A GB 693285 A GB693285 A GB 693285A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode ray
- envelopes
- manufacture
- disc
- ray tubes
- 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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/244—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for cathode ray tubes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
693,285. Bending glass. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 28, 1951 [March 2, 1950], No. 5248/50. Class 56. [Also in Group XL (a)] A method of manufacturing an optical window for a cathode ray tube, wherein there is provided a glass disc which may be in the form of a meniscus, comprises supporting the central part of the disc between holding members and heating the part of the disc projecting from the holding members and shaping it, by spading or rolling it over, to form a flange surrounding the central portion. The disc may be optically worked before the above process is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB524850A GB693285A (en) | 1950-03-02 | 1950-03-02 | Improvements relating to the manufacture of optical windows for the envelopes of electron discharge devices especially cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB524850A GB693285A (en) | 1950-03-02 | 1950-03-02 | Improvements relating to the manufacture of optical windows for the envelopes of electron discharge devices especially cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693285A true GB693285A (en) | 1953-06-24 |
Family
ID=9792511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB524850A Expired GB693285A (en) | 1950-03-02 | 1950-03-02 | Improvements relating to the manufacture of optical windows for the envelopes of electron discharge devices especially cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB693285A (en) |
-
1950
- 1950-03-02 GB GB524850A patent/GB693285A/en not_active Expired
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