GB591648A - Improvements in the manufacture of stems for electron discharge devices and the like - Google Patents
Improvements in the manufacture of stems for electron discharge devices and the likeInfo
- Publication number
- GB591648A GB591648A GB1222245A GB1222245A GB591648A GB 591648 A GB591648 A GB 591648A GB 1222245 A GB1222245 A GB 1222245A GB 1222245 A GB1222245 A GB 1222245A GB 591648 A GB591648 A GB 591648A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- die
- sheet
- stems
- manufacture
- 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
- 239000011521 glass Substances 0.000 abstract 9
- 238000000465 moulding Methods 0.000 abstract 2
- 238000007664 blowing Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000000875 corresponding Effects 0.000 abstract 1
- 210000001699 lower leg Anatomy 0.000 abstract 1
Classifications
-
- 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
- H01J9/32—Sealing leading-in conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
Abstract
591,648. Glass manufacture. STANDARD TELEPHONES & CABLES, Ltd., and MOSCRIP, W. R. May 15, 1945, No. 12222. [Class 56] Glass stems or bases for electron discharge devices and the like are made by softening a thin sheet of glass by heat and blowing the softened glass by gas pressure into contact with a mould adapted tu form the external surface of said stem or base. As shown in Fig. 2, a thin sheet of glass 8 is supported in a frame 9 and 10 above a moulding die 2, having a central ejecting tool 3, both of which are formed with conical depressions 4 and 5 for producing corresponding perforated protuberances 6 in the base 7, onto which conductors or glass tubes may afterwards be sealed. The glass sheet is heated by a burner 19, which is then swung away and the upper part of the moulding device, Fig. 1, comprising a hollow cylindrical sleeve 12, adapted to fit over the edge of the die 2 and having a cutting edge 13, clamp ring 14 and shank 15 with central channel 17, is brought down, so that lugs 11 and 18 contact and force the sheet onto the die where it is held by the clamping ring 14. The cutting edge 13 sheers off excess glass against the outer periphery of the die and air is blown through the channel 17 and hole 16 to force the glass into the mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0177874A ES177874A1 (en) | 1945-05-15 | 1947-05-03 | IMPROVEMENTS IN STEM MANUFACTURING PROCEDURES FOR ELECTRONIC DISCHARGE AND SIMILAR DEVICES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB591648A true GB591648A (en) | 1947-08-25 |
Family
ID=1716374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1222245A Expired GB591648A (en) | 1945-05-15 | 1945-05-15 | Improvements in the manufacture of stems for electron discharge devices and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB591648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891055A (en) * | 1987-11-06 | 1990-01-02 | Nippon Sheet Glass Co., Ltd. | Method of forming glass product having smooth surface |
| US5092804A (en) * | 1990-07-31 | 1992-03-03 | Gte Products Corporation | Method to press and shear heavy wall metal halide lamps |
-
1945
- 1945-05-15 GB GB1222245A patent/GB591648A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891055A (en) * | 1987-11-06 | 1990-01-02 | Nippon Sheet Glass Co., Ltd. | Method of forming glass product having smooth surface |
| US5092804A (en) * | 1990-07-31 | 1992-03-03 | Gte Products Corporation | Method to press and shear heavy wall metal halide lamps |
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