GB224163A - Process for the manufacture of articles of various shapes in silica glass - Google Patents

Process for the manufacture of articles of various shapes in silica glass

Info

Publication number
GB224163A
GB224163A GB11039/24A GB1103924A GB224163A GB 224163 A GB224163 A GB 224163A GB 11039/24 A GB11039/24 A GB 11039/24A GB 1103924 A GB1103924 A GB 1103924A GB 224163 A GB224163 A GB 224163A
Authority
GB
United Kingdom
Prior art keywords
silica
mould
articles
container
various shapes
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
GB11039/24A
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 GB224163A publication Critical patent/GB224163A/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
    • C03B5/021—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by induction heating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Glass Compositions (AREA)

Abstract

224,163. Quartz et Silice. Nov. 2, 1923, [Convention date]. Forming silica-glass articles.-A method of forming articles of fused silica, or of glass hav. ing a high silica content, consists in melting the silica in actual contact with a mould, of refractory and conducting material, which is raised to a high temperature by the induction of highfrequency electric currents. Fig. 4 shows in section a device for making insulators. A charge b of sand, rock crystal, or other suitable material, is placed in a mould a<3> of graphite having a graphite core a<8>. The mould is placed in a container c of insulating material, such as porcelain, micanite, or silica, and is packed around with charcoal, lamp black, or other suitable heat insulator f. A copper or aluminium tube d through which water is circulated, is coiled around the outer surface of the container c, and this tube is traversed by an alternating current of high frequency, say 40000 per second, produced by known means such as an arc or spark generator, high frequency alternator, or thermionic valves. The heat generated in the mould by induction fuses the charge of sand. Articles of various shapes can be produced and can be pressed or blown. Small lenses for optical purposes can be made in a crucible a<4>, Fig. 5, fitted with a plunger a<5> both provided with moulding spaces for shaping a piece of silica g. The container c is provided with a tightly-fitting cover to enable fusion to be carried out in vacuo or in an atmosphere of any suitable gas.
GB11039/24A 1923-11-02 1924-05-05 Process for the manufacture of articles of various shapes in silica glass Expired GB224163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR490963X 1923-11-02

Publications (1)

Publication Number Publication Date
GB224163A true GB224163A (en) 1924-11-06

Family

ID=8904405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11039/24A Expired GB224163A (en) 1923-11-02 1924-05-05 Process for the manufacture of articles of various shapes in silica glass

Country Status (3)

Country Link
DE (1) DE490963C (en)
FR (1) FR585213A (en)
GB (1) GB224163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995025416A1 (en) * 1994-03-16 1995-09-21 Larkden Pty. Limited Apparatus for eddy current heating, heat storage, electricity generation, and lens moulding process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100133C (en) * 1954-06-30

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995025416A1 (en) * 1994-03-16 1995-09-21 Larkden Pty. Limited Apparatus for eddy current heating, heat storage, electricity generation, and lens moulding process
US5994681A (en) * 1994-03-16 1999-11-30 Larkden Pty. Limited Apparatus for eddy current heating a body of graphite

Also Published As

Publication number Publication date
FR585213A (en) 1925-02-23
DE490963C (en) 1930-02-08

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