GB287522A - Improvement in the manufacture of transparent fused pure silica - Google Patents

Improvement in the manufacture of transparent fused pure silica

Info

Publication number
GB287522A
GB287522A GB7570/28A GB757028A GB287522A GB 287522 A GB287522 A GB 287522A GB 7570/28 A GB7570/28 A GB 7570/28A GB 757028 A GB757028 A GB 757028A GB 287522 A GB287522 A GB 287522A
Authority
GB
United Kingdom
Prior art keywords
improvement
manufacture
transparent fused
pure silica
fused 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
GB7570/28A
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 GB287522A publication Critical patent/GB287522A/en
Expired legal-status Critical Current

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
    • C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
    • C03B5/033—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by using resistance heaters above or in the glass bath, i.e. by indirect resistance heating
    • C03B5/0334—Pot furnaces; Core furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/09—Other methods of shaping glass by fusing powdered glass in a shaping mould

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Silicon Compounds (AREA)

Abstract

287,522. Quartz et Silice. March 23, 1927, [Convention date]. Drawings to Specification. Fused silica.-A method of making transparent fused silica. using quartzites of the kind referred to in Specification 190,477, consists in melting as large blocks as possible of the quartzite without deformation by packing the blocks into an electric resistance furnace with a filling of pure sand. After fusion, the cooled ingot is cut up by any suitable means and the flawless portions are separated and used for optical purposes. Other portions, which may not be optically homogeneous, are brought into shape or again treated by the methods described in Specifications 224,164.; 242,214, [Mass 60, Grinding or abrading &c.]; 270,692 and 283,174.
GB7570/28A 1927-03-23 1928-03-12 Improvement in the manufacture of transparent fused pure silica Expired GB287522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR287522X 1927-03-23

Publications (1)

Publication Number Publication Date
GB287522A true GB287522A (en) 1928-07-05

Family

ID=8887397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7570/28A Expired GB287522A (en) 1927-03-23 1928-03-12 Improvement in the manufacture of transparent fused pure silica

Country Status (2)

Country Link
US (1) US1755953A (en)
GB (1) GB287522A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921518A (en) * 1988-12-23 1990-05-01 Corning Incorporated Method of making short fiber reinforced glass and glass-ceramic matrix composites

Also Published As

Publication number Publication date
US1755953A (en) 1930-04-22

Similar Documents

Publication Publication Date Title
GB447821A (en) Process of manufacture of multi-cellular glass
GB287522A (en) Improvement in the manufacture of transparent fused pure silica
US1980401A (en) Method of fusing bifocal buttons
US1450711A (en) Process of making a fused bifocal
GB338457A (en) Improvement in the working of fused pure silica or other vitreous material which is fusible with difficulty
GB855395A (en) Production of multifocal lens blanks
GB427129A (en) Improvements relating to centrifugal casting of fusible materials
GB512622A (en) Improvements in the manufacture of vitreous silica and other refractory vitreous siliceous materials
GB872965A (en) Method of making bifocal lenses
FR865278A (en) Process and furnace for melting glass
GB454071A (en) Method of manufacturing articles from refractory or sinterable materials
GB282733A (en)
GB283148A (en) Improvements in the manufacture of fused silica
GB436430A (en) Improvements in and relating to the manufacture of abrasive wheels
GB378844A (en) Process for the production of lead glasses, glaze frits and the like
GB279799A (en) Anti-dazzle lens and its methods of manufacture
CA287745A (en) Method of charging molten glass into moulds
JPS5616139A (en) Production of quartz plate for photomask
GB518652A (en) Improved method and apparatus for forming sealed hollow articles of glass
GB275141A (en) New process for the manufacture of artistic glass objects
GB667883A (en) Improved method of manufacturing internal screw-threads and other regular and irregular shapes
GB507823A (en) Method for the production of silicate melts opacified with zirconium oxide
AU958427A (en) An improved method of and apparatus for charging molten glass into moulds
GB363610A (en) Process for the manufacture and production of rings, or other hollow bodies, of fused quartz
GB308568A (en)