GB437326A - Improvements in electric discharge tubes - Google Patents
Improvements in electric discharge tubesInfo
- Publication number
- GB437326A GB437326A GB773/35A GB77335A GB437326A GB 437326 A GB437326 A GB 437326A GB 773/35 A GB773/35 A GB 773/35A GB 77335 A GB77335 A GB 77335A GB 437326 A GB437326 A GB 437326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cap
- glass
- proportions
- electric discharge
- asbestos
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
- B24B9/102—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass for travelling sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
An electric discharge tube producing a high temperature in the region of its contactmaking cap has the cap formed of a dispersion of glass in porous, heat-proof, insulating material such as asbestos-cement, gypsum or brick chamotte. The percentage of glass may be 20-55. Asbestos powder, Portland cement, talc and borate glass may be mixed together in the proportions 30, 80, 70 and 15 and the mixture moistened, cold-moulded to form the cap, dried and sintered at 1000 DEG C. To avoid the risk of moisture being taken up by the cap at its cool part near the electric contacts, the cap so formed is soaked in an alcoholic solution or aqueous dispersion of phenolformaldehyde condensation product and slowly heated to 180 DEG C. and cooled. The borate glass contains SiO2, B2O3, Al2O3, Na2O and CaO in the proportions 9, 50, 15, 16 and 10 and may be replaced by other low melting-point glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL437326X | 1934-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB437326A true GB437326A (en) | 1935-10-28 |
Family
ID=19786210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB773/35A Expired GB437326A (en) | 1934-03-05 | 1935-01-09 | Improvements in electric discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE407959A (en) |
| FR (1) | FR785842A (en) |
| GB (1) | GB437326A (en) |
| NL (1) | NL39999C (en) |
-
0
- BE BE407959D patent/BE407959A/xx unknown
- NL NL39999D patent/NL39999C/xx active
-
1935
- 1935-01-09 GB GB773/35A patent/GB437326A/en not_active Expired
- 1935-02-19 FR FR785842D patent/FR785842A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE407959A (en) | |
| FR785842A (en) | 1935-08-20 |
| NL39999C (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB965760A (en) | Lithium aluminium silicateí¬or lithium silicate and aluminaí¬containing ceramic material and the method of making it | |
| GB955818A (en) | Barium ceramic material and the method of making the same | |
| US2056930A (en) | Glass | |
| GB1059956A (en) | Ceramic articles and methods of making | |
| GB437326A (en) | Improvements in electric discharge tubes | |
| US2937100A (en) | Glass compositions and glass-to-metal seals | |
| ES374160A1 (en) | Ceramic whiteware compositions comprising a borate flux | |
| US2924636A (en) | Glass component for electrical apparatus | |
| GB579515A (en) | Improvements in or relating to vacuum tight seals | |
| NO150510C (en) | LEADING ADDITION TO USE IN THE GLASS INDUSTRY AND CERAMIC INDUSTRY AND PROCEDURES OF PRODUCING THEREOF | |
| GB618367A (en) | Cementing together the surfaces of shaped carbon bodies | |
| GB444532A (en) | Improvements in methods of making ceramic bodies | |
| SU351796A1 (en) | ||
| RU2016425C1 (en) | Heat resistant electroinsulating material | |
| GB253184A (en) | Improvements in the manufacture of pottery or the like | |
| GB486444A (en) | Improvements in vitreous bodies | |
| SU400542A1 (en) | VPTB | |
| SU50549A1 (en) | Method of making micalex | |
| SU975620A1 (en) | Low melting glass | |
| SU557061A1 (en) | Soldering glass | |
| SU259335A1 (en) | SUSTAINABLE TO THE ACTION OF CESIUM VAPOR | |
| SU546578A1 (en) | Glass | |
| SU626052A1 (en) | Frosted glass | |
| SU1143701A1 (en) | Glass | |
| GB424442A (en) | Improvements in and relating to the preparation of fused glass-ceramic joints |