GB338457A - Improvement in the working of fused pure silica or other vitreous material which is fusible with difficulty - Google Patents

Improvement in the working of fused pure silica or other vitreous material which is fusible with difficulty

Info

Publication number
GB338457A
GB338457A GB4888/30A GB488830A GB338457A GB 338457 A GB338457 A GB 338457A GB 4888/30 A GB4888/30 A GB 4888/30A GB 488830 A GB488830 A GB 488830A GB 338457 A GB338457 A GB 338457A
Authority
GB
United Kingdom
Prior art keywords
fusible
difficulty
improvement
working
silica
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
Application number
GB4888/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Quartz SAS
Original Assignee
Quartz and Silice SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quartz and Silice SA filed Critical Quartz and Silice SA
Publication of GB338457A publication Critical patent/GB338457A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
    • C03B19/025—Other methods of shaping glass by casting molten glass, e.g. injection moulding by injection moulding, e.g. extrusion

Abstract

338,457. Quartz et Silice. April 17, 1929, [Convention date]. Fused silica.-Relates to a method of moulding articles from fused silica, or other refractory vitreous material, and fining the material at the same time that it is brought to the required shape. According to the invention, a silica blank is heated to a very high temperature as described in Specification 283,174, the incandescent material is placed in a cylinder 1 between pistons 2, and it is then pressed so that it is driven outwards at a high speed through orifices 4 into cavities 5 formed in a mould body 6. The soundest portion of the silica blank is forced into the cavities 5, and the part that remains between the pistons retains the bubbles or flaws which existed in the blank.
GB4888/30A 1929-04-17 1930-02-13 Improvement in the working of fused pure silica or other vitreous material which is fusible with difficulty Expired GB338457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR527047X 1929-04-17

Publications (1)

Publication Number Publication Date
GB338457A true GB338457A (en) 1930-11-20

Family

ID=8921132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4888/30A Expired GB338457A (en) 1929-04-17 1930-02-13 Improvement in the working of fused pure silica or other vitreous material which is fusible with difficulty

Country Status (3)

Country Link
DE (1) DE527047C (en)
FR (1) FR688911A (en)
GB (1) GB338457A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747638C (en) * 1941-02-13 1944-10-09 Process for the production of spherical overpressure discharge lamps made of quartz glass

Also Published As

Publication number Publication date
DE527047C (en) 1931-06-13
FR688911A (en) 1930-08-30

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