GB769428A - Improvements relating to electrically heated glass furnaces - Google Patents
Improvements relating to electrically heated glass furnacesInfo
- Publication number
- GB769428A GB769428A GB2304053A GB2304053A GB769428A GB 769428 A GB769428 A GB 769428A GB 2304053 A GB2304053 A GB 2304053A GB 2304053 A GB2304053 A GB 2304053A GB 769428 A GB769428 A GB 769428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stem
- glass
- furnace
- sheath
- cooled
- 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
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
- C03B5/1672—Use of materials therefor
- C03B5/1675—Platinum group metals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/03—Electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Resistance Heating (AREA)
- Glass Melting And Manufacturing (AREA)
- Furnace Details (AREA)
Abstract
769.428. Electric glass furnaces with electrodes. HANN, D. G. Aug. 18, 1954 [Aug. 21, 1953], No. 23040/53. Class 39(3) In a glass melting furnace or a furnace in which glass is held in a molten state by passing current therethrough between immersed electrodes, the electrode 10 and its stem 11 are both of molybdenum or tungsten or other metal oxidizable at furnace temperature, and at least that part of the stem not immersed in glass 14 is sheathed in a tubular member 15 closed at its outer end 17 and made of platinum or other metal which does not oxidize at furnace temperature. The stem passes'through the top furnace wall to be supported by a clamp 18 on a bracket 19 and is in electrical contact with the sheath but is not welded or bonded thereto. The electrode is preferably not cooled at its outer end, but. if cooled, is not cooled so much as to freeze the glass around the stem. The sheath 15 may dip into the glass and may be a tight fit on the stem 11; or the stem may have an enlarged outer head with which the sheath is in close contact. The outer end of the aperture 12 in the wall may be sealed with clay, or may be enlarged to receive the clamp without the stem projecting externally. The electrode may comprise a single plate of molybdenum or several contiguous strips joined by strips at right angles. Current is supplied through a cable 21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2304053A GB769428A (en) | 1953-08-21 | 1953-08-21 | Improvements relating to electrically heated glass furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2304053A GB769428A (en) | 1953-08-21 | 1953-08-21 | Improvements relating to electrically heated glass furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB769428A true GB769428A (en) | 1957-03-06 |
Family
ID=10189129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2304053A Expired GB769428A (en) | 1953-08-21 | 1953-08-21 | Improvements relating to electrically heated glass furnaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB769428A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375314A (en) * | 1964-10-08 | 1968-03-26 | Boeing Co | Electrode for glass melting furnaces |
| US5125002A (en) * | 1991-01-07 | 1992-06-23 | Toledo Engineering Co., Inc. | Furnace electrode protector |
| CN113248117A (en) * | 2021-05-11 | 2021-08-13 | 重庆国际复合材料股份有限公司 | Sealing method for side-inserted electrode of glass fiber electric melting furnace |
-
1953
- 1953-08-21 GB GB2304053A patent/GB769428A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375314A (en) * | 1964-10-08 | 1968-03-26 | Boeing Co | Electrode for glass melting furnaces |
| US5125002A (en) * | 1991-01-07 | 1992-06-23 | Toledo Engineering Co., Inc. | Furnace electrode protector |
| CN113248117A (en) * | 2021-05-11 | 2021-08-13 | 重庆国际复合材料股份有限公司 | Sealing method for side-inserted electrode of glass fiber electric melting furnace |
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