GB634326A - Improvements relating to the manufacture of glass envelopes for cathode ray tubes or the like - Google Patents
Improvements relating to the manufacture of glass envelopes for cathode ray tubes or the likeInfo
- Publication number
- GB634326A GB634326A GB17405/47A GB1740547A GB634326A GB 634326 A GB634326 A GB 634326A GB 17405/47 A GB17405/47 A GB 17405/47A GB 1740547 A GB1740547 A GB 1740547A GB 634326 A GB634326 A GB 634326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- tube
- envelope
- bulb
- glass
- 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
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
- C03B23/217—Uniting glass rods, glass tubes, or hollow glassware for the production of cathode ray tubes or similarly shaped tubes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/0073—Re-forming shaped glass by blowing
-
- 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
- H01J9/26—Sealing together parts of vessels
- H01J9/263—Sealing together parts of vessels specially adapted for cathode-ray tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
634,326. Glass manufacture. HOLMAN, H. E., and PEARCE, R. R. July 2, 1947, No. 17405. [Class 56] A glass window, such as a cathode-ray tube screen, is pressed to its predetermined shape after it has been fused into position in the surrounding part of an envelope. As shown, a flat glass end wall 1, with parallel highly polished surfaces, is fused to the glass bulb 2 of the tube which is then mounted vertically over a steel mould 4 having a cavity 5 of the required shape, an annular retaining sleeve 6 closely fitting the bulb 2, and a recess 7 for accurate location relative to the bulb support ; heat is applied to the wall 1, e.g. by radial gas burners, and to the mould 4, by further burners or in a furnace, and after the tube has been lowered on to the mould compressed air &c. is blown in through a tube 8 to press the wall 1 into contact with the cavity 5 ; the tube is removed from the mould after cooling. The accurate internal protrusions on a cathode-ray tube envelope as described in Specifications 507,840 and 575,027, [both in Group XL], may be used to locate the envelope on a hollow internal mandrel aligned with the mould 4 and through which the compressed air &c. is injected, a rubber gasket on the mandrel being pressed against the open end of the bulb 2 ; alternatively the envelope may have external locating surfaces, coaxial with the internal protrusions, by which it is clamped in alignment with the mould.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL72140D NL72140C (en) | 1947-07-02 | ||
| GB17405/47A GB634326A (en) | 1947-07-02 | 1947-07-02 | Improvements relating to the manufacture of glass envelopes for cathode ray tubes or the like |
| US35266A US2518690A (en) | 1947-07-02 | 1948-06-25 | Manufacture of envelopes having glass windows, such as the envelopes for cathode-raytubes or the like |
| FR968504D FR968504A (en) | 1947-07-02 | 1948-06-29 | Manufacturing process of glass window envelopes for cathode ray tubes, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB17405/47A GB634326A (en) | 1947-07-02 | 1947-07-02 | Improvements relating to the manufacture of glass envelopes for cathode ray tubes or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB634326A true GB634326A (en) | 1950-03-15 |
Family
ID=10094613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17405/47A Expired GB634326A (en) | 1947-07-02 | 1947-07-02 | Improvements relating to the manufacture of glass envelopes for cathode ray tubes or the like |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2518690A (en) |
| FR (1) | FR968504A (en) |
| GB (1) | GB634326A (en) |
| NL (1) | NL72140C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2697310A (en) * | 1949-12-15 | 1954-12-21 | Rca Corp | Method of making seals for composite cathode-ray tubes |
| US2970405A (en) * | 1957-02-18 | 1961-02-07 | Corning Glass Works | Glass forming |
| NL228634A (en) * | 1957-06-18 | |||
| US3114620A (en) * | 1961-08-14 | 1963-12-17 | Corning Glass Works | Pneumatic sheet molding apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1979573A (en) * | 1931-05-28 | 1934-11-06 | Clarence P Byrnes | Glass article |
| US2346470A (en) * | 1940-08-02 | 1944-04-11 | Nat Technical Lab | Method of making glass electrodes |
-
0
- NL NL72140D patent/NL72140C/xx active
-
1947
- 1947-07-02 GB GB17405/47A patent/GB634326A/en not_active Expired
-
1948
- 1948-06-25 US US35266A patent/US2518690A/en not_active Expired - Lifetime
- 1948-06-29 FR FR968504D patent/FR968504A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2518690A (en) | 1950-08-15 |
| FR968504A (en) | 1950-11-29 |
| NL72140C (en) |
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