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 sheetsInfo
- 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
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.
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) | FR1175857A (en) |
GB (1) | GB877242A (en) |
NL (1) | NL6510180A (en) |
Cited By (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL100407C (en) * | 1954-10-25 | |||
BE544819A (en) * | 1955-02-14 |
-
1957
- 1957-05-31 FR FR739851A patent/FR1175857A/en not_active Expired
- 1957-05-31 FR FR739852A patent/FR1179368A/en not_active Expired
- 1957-10-31 FR FR750671A patent/FR72435E/en not_active Expired
-
1958
- 1958-05-29 DE DES58413A patent/DE1114009B/en active Pending
- 1958-05-29 BE BE568142D patent/BE568142A/fr unknown
- 1958-06-02 GB GB17561/58A patent/GB877242A/en not_active Expired
-
1965
- 1965-08-05 NL NL6510180A patent/NL6510180A/xx unknown
Cited By (1)
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 |
---|---|
FR72435E (en) | 1960-04-13 |
FR1179368A (en) | 1959-05-22 |
BE568142A (en) | 1958-11-29 |
FR1175857A (en) | 1959-04-02 |
NL6510180A (en) | 1965-10-25 |
DE1114009B (en) | 1961-09-21 |
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