[go: up one dir, main page]

GB834623A - Method of and apparatus for bending glass sheets - Google Patents

Method of and apparatus for bending glass sheets

Info

Publication number
GB834623A
GB834623A GB6032/58A GB603258A GB834623A GB 834623 A GB834623 A GB 834623A GB 6032/58 A GB6032/58 A GB 6032/58A GB 603258 A GB603258 A GB 603258A GB 834623 A GB834623 A GB 834623A
Authority
GB
United Kingdom
Prior art keywords
zone
bending
heaters
lehr
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
GB6032/58A
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of GB834623A publication Critical patent/GB834623A/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
    • C03B25/00—Annealing glass products
    • C03B25/04—Annealing glass products in a continuous way
    • C03B25/06—Annealing glass products in a continuous way with horizontal displacement of the glass products
    • C03B25/08—Annealing glass products in a continuous way with horizontal displacement of the glass products of glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
    • C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
    • C03B29/08—Glass sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

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

Abstract

834,623. Glass-bending lehrs. PITTSBURGH PLATE GLASS CO. Feb. 25, 1958 [Feb. 26, 1957], No. 6032/58. Class 51 (2). A sheet-glass-bending lehr comprises a preheating zone 16, a bending zone 18, a temperature neutralizing zone 19, an annealing zone 20 including a reheating section 21 and a cooling zone 22 terminating in an unloading station 23, a controllable fan 40 being provided near the end of the cooling zone to blow sufficient air into the reheating section 21 to keep the air in the bending zone 18 quiescent. Moulds M are conveyed through the lehr by rollers 10. Overhead heaters 24 and 34 are respectively provided in the preheating zone 16 and the reheating section 21, with overhead heaters 25 and additional suspended heaters 26 and 28 in the bending zone. Heaters 25, 26, 28 and 34 have individual electric control circuits there being no heaters in the temperature neutralizing zone 19. The cooling zone has a corrugated asbestos roof 36 mounted on inverted T-bars 38 the last two of which carry the fan housing 42 provided with dampers 52. Ducting 54, 55 extends through roof 36 to a narrow nozzle 56 terminating in a slot 58 extending over the width of the lehr.
GB6032/58A 1957-02-26 1958-02-25 Method of and apparatus for bending glass sheets Expired GB834623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US834623XA 1957-02-26 1957-02-26

Publications (1)

Publication Number Publication Date
GB834623A true GB834623A (en) 1960-05-11

Family

ID=22178505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6032/58A Expired GB834623A (en) 1957-02-26 1958-02-25 Method of and apparatus for bending glass sheets

Country Status (4)

Country Link
BE (1) BE565137A (en)
DE (1) DE1082014B (en)
FR (1) FR1191877A (en)
GB (1) GB834623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889547A (en) * 1987-11-20 1989-12-26 Saint-Gobain Vitrage "Les Miroirs" Apparatus for thermal bending of glass sheets

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915493C (en) * 1949-02-01 1954-07-22 Iaofuia Ofenbau Union G M B H Continuous cooling furnace
DE925722C (en) * 1951-03-09 1955-03-28 Siemens Ag Continuous furnace for the heat treatment of workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889547A (en) * 1987-11-20 1989-12-26 Saint-Gobain Vitrage "Les Miroirs" Apparatus for thermal bending of glass sheets

Also Published As

Publication number Publication date
FR1191877A (en) 1959-10-22
DE1082014B (en) 1960-05-19
BE565137A (en) 1900-01-01

Similar Documents

Publication Publication Date Title
GB1021843A (en) Method and apparatus for heating sheets of heat-softenable material, such as glass
ES438603A1 (en) Method of and apparatus for bending and tempering thin glass sheets
ES8607885A1 (en) Method and apparatus for bending glass sheets into a horizontal position.
TW376378B (en) Method and apparatus of bending and tempering a thin glass sheet
US2188401A (en) Apparatus for tempering glass
GB1104449A (en) Improvements relating to the tempering of glass articles
ES449076A1 (en) Apparatus for press bending relatively thin glass sheets
ATE41407T1 (en) DEVICE FOR BENDING GLASS PANES.
GB997919A (en) Method of conveying a glass sheet
US3293021A (en) Method of heating glass sheets
GB834623A (en) Method of and apparatus for bending glass sheets
GB1029972A (en) Method of bending glass sheets
US3298810A (en) Method and apparatus for bending and tempering glass sheets
ES298701A1 (en) Methods of heat treating and gas pressure supporting glass in sheet form
GB1133615A (en) Improvements in or relating to methods of toughening glass in sheet form
GB1050388A (en)
US3387963A (en) Annealing lehr for glass sheets with reradiating side wall plates
GB1071555A (en) Method of and apparatus for bending and tempering glass sheets
US3123344A (en) Glass bending furnaces
GB691468A (en) Glass bending methods and furnaces
US3862828A (en) Controlling glass sheet furnace & temperatures
GB937003A (en) Method and apparatus for reducing breakage of glass sheet during bending
GB344027A (en) An improved process for tempering glass
GB1391586A (en) Method of tempering sheet glass
GB509775A (en) Improvements in process and apparatus for bending and tempering glass sheets