GB739427A - Curved glazing sheets and processes and apparatus for their manufacture - Google Patents

Curved glazing sheets and processes and apparatus for their manufacture

Info

Publication number
GB739427A
GB739427A GB3947/54A GB394754A GB739427A GB 739427 A GB739427 A GB 739427A GB 3947/54 A GB3947/54 A GB 3947/54A GB 394754 A GB394754 A GB 394754A GB 739427 A GB739427 A GB 739427A
Authority
GB
United Kingdom
Prior art keywords
tempered
sheet
curved
cooling
masks
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
GB3947/54A
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.)
MANUFACTURES DES GIACES ET PRO
Original Assignee
MANUFACTURES DES GIACES ET PRO
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 MANUFACTURES DES GIACES ET PRO filed Critical MANUFACTURES DES GIACES ET PRO
Publication of GB739427A publication Critical patent/GB739427A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/052—Tempering or quenching glass products using gas for flat or bent glass sheets being in a vertical position
    • 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
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C03B23/031—Re-forming glass sheets by bending by press-bending between shaping moulds the glass sheets being in a vertical position
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
    • C03B27/0442—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position for bent glass sheets
    • C03B27/0445—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position for bent glass sheets the quench unit being adapted to the bend of the sheet

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

739,427. Tempering glass sheets. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY & CIREY. Feb. 10, 1954 [Feb. 12, 1953], No. 3947/54. Drawings to Specification. Class 56. In the manufacture of tempered curved glass sheets having one or more portions less tempered or not tempered at all, in particular for vehicle windscreens, the flat glass sheet is uniformly heated over its whole area to the softening temperature and is then curved, e.g. by sagging on to an appropriately shaped former or by engagement between concave and convex shaping members. The parts to be less or not tempered are then masked on both faces by removable screens while the sheet retains all or part of the heat received for the curving and the remainder is then tempered by adjusting the heating and/or cooling so that the masked parts are at a temperature not greater than that of the surrounding zone when the latter congeals during the cooling. Two main forms of apparatus are described. In one, after the glass has been curved without the masks, it is cooled (e.g. by exposure to air) substantially to congealing point, the masks are then applied, the sheet reheated, and then subjected to rapid cooling to temper the non-masked portion. In the other, after the sheet has been curved without the masks, cooling screens are placed over the parts to be less or untempered and the temperature of the remaining portion of the sheet is maintained until after the screened portions have cooled sufficiently whereupon the unscreened portion is tempered by rapid cooling. In both forms the screens may be left in masking position during the final rapid cooling. In the first form, after the sheet has been curved and the masks applied, before the assembly is passed to the rapid cooler it may again pass through the shaping members, or between auxiliary shaping members, to correct any irregularities in the shape that may have occurred during the end portion of the heating. Specification 704,312 is referred to.
GB3947/54A 1953-02-12 1954-02-10 Curved glazing sheets and processes and apparatus for their manufacture Expired GB739427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR961752X 1953-02-12

Publications (1)

Publication Number Publication Date
GB739427A true GB739427A (en) 1955-10-26

Family

ID=9499463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3947/54A Expired GB739427A (en) 1953-02-12 1954-02-10 Curved glazing sheets and processes and apparatus for their manufacture

Country Status (6)

Country Link
BE (1) BE526447A (en)
CH (1) CH315265A (en)
DE (1) DE961752C (en)
FR (1) FR1074870A (en)
GB (1) GB739427A (en)
NL (1) NL185035C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172921A (en) 1974-05-17 1979-10-30 Jenaer Glaswerk Schott & Gen. Fireproof glass
US4323385A (en) * 1980-07-21 1982-04-06 Ppg Industries, Inc. Nozzle arrangement for glass sheet tempering apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160262A1 (en) * 1971-11-16 1973-06-29 Loing Verreries Glass bowl making - comprises forming and quenching stages
FR2178750B1 (en) * 1972-04-05 1974-08-02 Saint Gobain Pont A Mousson

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE626606C (en) * 1933-11-25 1936-02-28 Saint Gobain Method and device for the production of curved glass panels
BE420910A (en) * 1936-07-25
DE808880C (en) * 1946-11-26 1951-07-19 Saint Gobain Device for bending glass panes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172921A (en) 1974-05-17 1979-10-30 Jenaer Glaswerk Schott & Gen. Fireproof glass
US4323385A (en) * 1980-07-21 1982-04-06 Ppg Industries, Inc. Nozzle arrangement for glass sheet tempering apparatus

Also Published As

Publication number Publication date
BE526447A (en)
CH315265A (en) 1956-08-15
DE961752C (en) 1957-04-11
FR1074870A (en) 1954-10-11
NL185035C (en)

Similar Documents

Publication Publication Date Title
GB468944A (en) Improvements in and relating to tempered glass
US2897632A (en) Method of producing pattern-cut bent glass sheets
US3522029A (en) Method of reshaping glass sheets by differential cooling
US2244715A (en) Tempered glass and process for manufacture of the same
US3586492A (en) Glass sheet support for a press shaping apparatus
GB739427A (en) Curved glazing sheets and processes and apparatus for their manufacture
MX3420E (en) IMPROVED PROCEDURE FOR PRODUCING ORIENTED GRAIN SILICON STEEL
US2311846A (en) Tempering glass
US3776709A (en) Method of toughening glass sheets
US2093040A (en) Hardened glass and method of making the same
US3174840A (en) Apparatus and process for differential tempering of glass
FI73656C (en) Procedure for differential curing of glass sheets, in particular vehicle windows.
US3262768A (en) Method for bending and tempering glass sheets
US2235969A (en) Apparatus for the manufacture of bent tempered sheets of glass
US2674067A (en) Process for shaping glass articles
US3387963A (en) Annealing lehr for glass sheets with reradiating side wall plates
US3081209A (en) Tempered glass sheet or plate
US3374077A (en) Method of press bending glass sheets between cold opposed shaping molds
GB467607A (en) Tempered glass and process for manufacturing the same
US4043784A (en) Shaping glass sheets
US2409864A (en) Gauge
US3827872A (en) Glass tempering method
US2151983A (en) Method of and apparatus for decorating and annealing glassware
US2906652A (en) Method of making bright-finished steel strip
US2271373A (en) Method of tempering glass