http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-222119-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d647e846645953f86e9ba89e7f5ead3d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B23-0476 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B23-047 |
| filingDate | 1924-09-12^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1925-01-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-222119-A |
| titleOfInvention | Improvements in and relating to methods of and apparatus for working quartz |
| abstract | 222,119. British Thomson-Houston Co., Ltd., (Assignees of Berry, E. R., and Devers, P. K.). Sept. 20, 1923, [Convention date]. Forming silica-glass articles. - A method of forming tubing of fused silica consists in heating the end of a rod of silica until it is plastic, mechanically perforating a portion of the plastic rod along its longitudinal axis, and then applying gaseous pressure internally to expand the rod to tubular form. A machine for carrying out the process comprises a number of burners 13 mounted on an horizontal disc 16 which is rotated in contact with' a table 9 by means of a motor 11. The flames from the burners form a heating zone into which a. rod 12 of quartz is fed. A vertical tube 54 is secured to the machine base 8, and another tube 53 slides within this tube and can be moved up and down by a handle 75. The tube 53 is closed at its base and is connected by a flexible pipe 44 with a source of air pressure. A rod 46 passing through the tube 53 carries at its upper end a spur or forming-tool 45 which can be moved to and from the heating zone by means of a lever 47. At the commencement of operations, the end of the quartz rod 12 is heated until it is plastic and is fused on to a tube 42 of quartz which surrounds the spur 45 and passes down within the tube 53. The spur 45 is then forced upwards into the plastic end of the quartz rod to perforate it, and air admitted to the tube 53 passes into the cavity formed by the spur and expands the end of the rod into a tube. The size and shape of the quartz tube is controlled by a mould 56 consisting of two sections pivoted to the top of the tube 54 and opened and closed by a lever 68. When a length of the tube is thus formed, the mould is opened and the quartz rod and tube are lowered by means of the handle 75. The succeeding section of the rod is then heated and expanded in the mould as before. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-744973-C |
| priorityDate | 1923-09-20^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID457707758 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID24261 |
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