GB822984A - Method and apparatus for bending glass sheets - Google Patents

Method and apparatus for bending glass sheets

Info

Publication number
GB822984A
GB822984A GB18517/57A GB1851757A GB822984A GB 822984 A GB822984 A GB 822984A GB 18517/57 A GB18517/57 A GB 18517/57A GB 1851757 A GB1851757 A GB 1851757A GB 822984 A GB822984 A GB 822984A
Authority
GB
United Kingdom
Prior art keywords
bending
june
engagement
glass sheets
mould frame
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
GB18517/57A
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 GB822984A publication Critical patent/GB822984A/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
    • C03B23/027—Re-forming glass sheets by bending by gravity with moulds having at least two upward pivotable mould sections
    • 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

Abstract

822,984. Bending glass sheets. PITTSBURGH PLATE GLASS CO. June 12, 1957 [June 15, 1956; June 28, 1956], No. 18517/57. Class 56. In the bending of glass sheets to non-uniform curvatures including an area left substantially flat (particularly as in the central portion of a wrap-around windshield) the amount of heat on the part to be left flat is reduced by providing a heat-absorber member beneath such part and movable round thereto so that at times in the bending cycle it may be closely adjacent the part and at other times remote therefrom. Two forms are described. In Fig 5, the absorber comprises plates 61 or screens or expanded metal laminae mounted by parallel linkage 62 on the mould frame F and moved vertically by the engagement of followers 70 on cranked levers 66 pivoted at 67 on the mould frame with cam tracks 58, 59, 58<SP>1</SP> in the preheat, bending, and annealing zones 55, 56, 57 of the lehr 53, the abosrber being nearest to the undersurface of the central part G of the sheet when it is in the bending zone. In Fig. 11 chilling bars 110 are carried by links 112 pivoted within the mould frame 101 and are raised and lowered by the engagement of a follower 115 on the bar support with a cam 114 on a shaft 117 carried by and projecting beyond the mould carrier and having a pair of radial arms at one end for engagement with fixed stops projecting from the side of the lehr into the path of travel of the arms.
GB18517/57A 1956-06-28 1957-06-12 Method and apparatus for bending glass sheets Expired GB822984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA280656X 1956-06-28

Publications (1)

Publication Number Publication Date
GB822984A true GB822984A (en) 1959-11-04

Family

ID=25682877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18517/57A Expired GB822984A (en) 1956-06-28 1957-06-12 Method and apparatus for bending glass sheets

Country Status (3)

Country Link
CH (1) CH345982A (en)
DE (1) DE1112258B (en)
GB (1) GB822984A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645621A (en) * 1995-06-07 1997-07-08 Pilkington Glass Limited Apparatus for and method of bending glass sheets
CN109041574A (en) * 2017-04-10 2018-12-18 法国圣戈班玻璃厂 For making the curved gravity bending moulds with curved bearing surface of glass disc

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111925105B (en) * 2020-09-03 2021-02-26 海安明光光学玻璃科技有限公司 Hot bending glass manufacturing machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527159A (en) * 1953-03-12
US2876595A (en) * 1954-06-21 1959-03-10 Pittsburgh Plate Glass Co Glass bending molds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645621A (en) * 1995-06-07 1997-07-08 Pilkington Glass Limited Apparatus for and method of bending glass sheets
CN109041574A (en) * 2017-04-10 2018-12-18 法国圣戈班玻璃厂 For making the curved gravity bending moulds with curved bearing surface of glass disc
CN109041574B (en) * 2017-04-10 2021-12-28 法国圣戈班玻璃厂 Gravity bending mould with curved bearing surface for bending glass discs
US11299416B2 (en) 2017-04-10 2022-04-12 Saint-Gobain Glass France Gravity bending mould for bending glass panes with curved support surface

Also Published As

Publication number Publication date
CH345982A (en) 1960-04-30
DE1112258B (en) 1961-08-03

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