GB257590A - - Google Patents
Info
- Publication number
- GB257590A GB257590A GB19907/26A GB1990726A GB257590A GB 257590 A GB257590 A GB 257590A GB 19907/26 A GB19907/26 A GB 19907/26A GB 1990726 A GB1990726 A GB 1990726A GB 257590 A GB257590 A GB 257590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stretched
- weight
- sheet
- glass
- bar
- 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
- C03B23/037—Re-forming glass sheets by drawing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/051—Re-forming tubes or rods by gravity, e.g. sagging
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Fiber Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
257,590. Soc. Anon. des Manufactures des Glaces et Produits Chimiques de St. Gobain, Chauny, et Cirey. Aug. 27, 1925, [Convention date]. Flattening. - A method of flattening curved sheets or cylinders of glass consists in heating the glass to a suitable temperature and stretching it until it is flat. The curved sheet A, Fig. 3, which may be supported either vertically or horizontally, is secured at one end to a bar b while the other end is attached to a weight f. When the glass is brought to a suitable temperature, the sheet open!s out and is stretched into a flat form by the weight f. A cylinder may be stretched by suspending it from a bar k, Fig. 6, and suspending weights from another bar k<1>. The curved ends of the stretched cylinder can then be cut away leaving two flat sheets D, D<1>. The Specification, as open to inspection under Sect. 91 (3) (a), describes also a method of stretching a sheet by its own weight, and also by pressing it between vertical slabs or by passing it between rollers. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR257590T | 1925-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB257590A true GB257590A (en) | 1927-03-24 |
Family
ID=31897690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19907/26A Expired GB257590A (en) | 1925-08-27 | 1926-08-12 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB257590A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0607433A1 (en) * | 1992-07-31 | 1994-07-27 | Shin-Etsu Quartz Products Co., Ltd. | Quartz glass plate large in size and high in purity, and method and device for making said plate |
WO2000055100A1 (en) * | 1999-03-12 | 2000-09-21 | Corning Incorporated | Projection lithography photomask substrate and method of making |
US6242136B1 (en) | 1999-02-12 | 2001-06-05 | Corning Incorporated | Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass |
US6265115B1 (en) | 1999-03-15 | 2001-07-24 | Corning Incorporated | Projection lithography photomask blanks, preforms and methods of making |
US6682859B2 (en) | 1999-02-12 | 2004-01-27 | Corning Incorporated | Vacuum ultraviolet trasmitting silicon oxyfluoride lithography glass |
US6783898B2 (en) | 1999-02-12 | 2004-08-31 | Corning Incorporated | Projection lithography photomask blanks, preforms and method of making |
WO2008035067A1 (en) * | 2006-09-22 | 2008-03-27 | University Of Southampton | Method of fabricating a planar substrate having optical waveguides |
-
1926
- 1926-08-12 GB GB19907/26A patent/GB257590A/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0607433A1 (en) * | 1992-07-31 | 1994-07-27 | Shin-Etsu Quartz Products Co., Ltd. | Quartz glass plate large in size and high in purity, and method and device for making said plate |
EP0607433A4 (en) * | 1992-07-31 | 1995-03-01 | Shinetsu Quartz Prod | Quartz glass plate large in size and high in purity, and method and device for making said plate. |
US6492072B2 (en) | 1999-02-12 | 2002-12-10 | Corning Incorporated | Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass |
US6242136B1 (en) | 1999-02-12 | 2001-06-05 | Corning Incorporated | Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass |
US6682859B2 (en) | 1999-02-12 | 2004-01-27 | Corning Incorporated | Vacuum ultraviolet trasmitting silicon oxyfluoride lithography glass |
US6689516B2 (en) | 1999-02-12 | 2004-02-10 | Corning Incorporated | Projection lithography photomasks and method of making |
US6783898B2 (en) | 1999-02-12 | 2004-08-31 | Corning Incorporated | Projection lithography photomask blanks, preforms and method of making |
US6848277B2 (en) | 1999-02-12 | 2005-02-01 | George Edward Berkey | Projection lithography photomasks and method of making |
US6319634B1 (en) | 1999-03-12 | 2001-11-20 | Corning Incorporated | Projection lithography photomasks and methods of making |
WO2000055100A1 (en) * | 1999-03-12 | 2000-09-21 | Corning Incorporated | Projection lithography photomask substrate and method of making |
US6265115B1 (en) | 1999-03-15 | 2001-07-24 | Corning Incorporated | Projection lithography photomask blanks, preforms and methods of making |
WO2008035067A1 (en) * | 2006-09-22 | 2008-03-27 | University Of Southampton | Method of fabricating a planar substrate having optical waveguides |
US8218933B2 (en) | 2006-09-22 | 2012-07-10 | University Of Southampton | Method of fabricating a planar substrate having optical waveguides |
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