GB877242A - A method of and apparatus for the manufacture of curved and tempered glass sheets - Google Patents

A method of and apparatus for the manufacture of curved and tempered glass sheets

Info

Publication number
GB877242A
GB877242A GB17561/58A GB1756158A GB877242A GB 877242 A GB877242 A GB 877242A GB 17561/58 A GB17561/58 A GB 17561/58A GB 1756158 A GB1756158 A GB 1756158A GB 877242 A GB877242 A GB 877242A
Authority
GB
United Kingdom
Prior art keywords
screen
sheet
strips
glass sheets
glass
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
GB17561/58A
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain 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 Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of GB877242A publication Critical patent/GB877242A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/025—Re-forming glass sheets by bending by gravity
    • C03B23/0258—Gravity bending involving applying local or additional heating, cooling or insulating means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

877,242. Bending and tempering glass sheets. COMPAGNIE DE ST-GOBAIN. June 2, 1958 [May 31, 1957(2); Oct. 31, 1957], No. 17561/58. Class 56. In the bending and subsequent tempering of glass sheets, e.g. for. vehicle windscreens, a fragmentation barrier of untempered or only slightly tempered glass is formed by means of a temporary screen over a portion of one face and another temporary screen over a registering portion of the other face, but at least one of these screens is arranged to become effective only after the sheet has become bent. In the form shown the screen 8 is carried bv the skeleton concave mould 2 on to which the sheet 1 sinks on heating and this is the screen that becomes operative after the other, 9, which is in contact with the sheet all the time and moves with it. The screens may comprise strips, e.g. of foil which may be temporarily adhered to the glass and the strips need not extend fully to the edges of the sheet. The top screen may comprise two narrow strips spaced apart somewhat, the width of the strips plus the space then being equal to that of the under screen. Alternatively the barrier may comprise an annulus separating central and surrounding tempered zones. Specification 818,377 is referred to.
GB17561/58A 1957-05-31 1958-06-02 A method of and apparatus for the manufacture of curved and tempered glass sheets Expired GB877242A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR739851A FR1175857A (en) 1957-05-31 1957-05-31 Method and device for the manufacture of curved and tempered glass sheets
FR739852A FR1179368A (en) 1957-05-31 1957-05-31 Improvement in the manufacture of tempered glass sheets
FR750671A FR72435E (en) 1957-05-31 1957-10-31 Method and device for the manufacture of curved and tempered glass sheets

Publications (1)

Publication Number Publication Date
GB877242A true GB877242A (en) 1961-09-13

Family

ID=27245105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17561/58A Expired GB877242A (en) 1957-05-31 1958-06-02 A method of and apparatus for the manufacture of curved and tempered glass sheets

Country Status (5)

Country Link
BE (1) BE568142A (en)
DE (1) DE1114009B (en)
FR (3) FR1179368A (en)
GB (1) GB877242A (en)
NL (1) NL6510180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072490A (en) * 1976-11-08 1978-02-07 Corning Glass Works Apparatus and process for producing a gradient photochromic ophthalmic lens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100407C (en) * 1954-10-25
BE544819A (en) * 1955-02-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072490A (en) * 1976-11-08 1978-02-07 Corning Glass Works Apparatus and process for producing a gradient photochromic ophthalmic lens

Also Published As

Publication number Publication date
BE568142A (en) 1958-11-29
NL6510180A (en) 1965-10-25
FR1179368A (en) 1959-05-22
FR1175857A (en) 1959-04-02
FR72435E (en) 1960-04-13
DE1114009B (en) 1961-09-21

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