GB355555A - Improvements in forehearths for glass melting furnaces - Google Patents

Improvements in forehearths for glass melting furnaces

Info

Publication number
GB355555A
GB355555A GB2902130A GB2902130A GB355555A GB 355555 A GB355555 A GB 355555A GB 2902130 A GB2902130 A GB 2902130A GB 2902130 A GB2902130 A GB 2902130A GB 355555 A GB355555 A GB 355555A
Authority
GB
United Kingdom
Prior art keywords
channel
glass
forehearth
chamber
shutters
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
GB2902130A
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.)
Hartford Empire Co
Original Assignee
Hartford Empire 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 Hartford Empire Co filed Critical Hartford Empire Co
Priority to GB2902130A priority Critical patent/GB355555A/en
Publication of GB355555A publication Critical patent/GB355555A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/02Forehearths, i.e. feeder channels
    • C03B7/06Means for thermal conditioning or controlling the temperature of the glass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

355,555. Glass manufacture. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Hartford-Empire Co. ; 333, Homestead Avenue, Hartford, Connecticut, U.S.A.) Sept.27,1930, No. 29021. [Class 56.] Delivering molten metal.-The molten glass in the channel of the forehearth of a glass melting furnace is maintained at substantially uniform fluidity by providing a central longitudinal opening in its roof to permit radiation of heat from the centre of the channel and long narrow flames directed downwardly on to the glass adjacent the side walls of the channel. In the construction shown in Figs. 1 and 2 the upper forehearth structure above the channel 1 includes transverse refractory walls 16, 52 and a middle refractory partition 15 dividing the structure in a rear chamber 24 and a front chamber 49. The chamber 24 is bridged by pairs of hinged refractory shutters carried by holders 32 supported by fulcrum rods 35. Each pair of shutters 25 may be rocked independently of the other pairs to vary the heat radiation by chains 38, 39 attached to wheels 40 rotated by handles 42. When closed a space 36 between the ends of the shutters permits the escape of hot gases. Firing chamber 26 extending along the side walls 18 of the chamber 24 are fitted with burners 47, the flames from which pass through slots 21a in supporting blocks 21 and are deflected by lips 18a on the walls 18 on to the side portions of the glass in the channel. The front chamber 49 is provided with two side combustion chambers 51 each having its rear wall composed of refractory blocks, to which is secured a plate 66 carrying a gaseous or liquid fuel burner provided with two series of annular air ports. The delivery end of the forehearth comprises a feed bowl 7 insulated by granular material 9 and fitted with a reciprocating member surrounded by an adjustable rotating tube 13. The front of the forehearth is provided with stacks 81, 82 fitted with adjustable dampers 83, 89. The temperature of the glass may be indicated and controlled by thermo couples 90. Fig. 6 shows another construction of forehearth in which hinged shutters 102 .. 105 pivoted on spindles 106 over openings above the longitudinal channel 100 are opened in turn by the engagement of blocks 119 .. 122 on a slidable rack bar 112 with rocker arms 108 .. 111 on the spindles 106. The rack-bar 112 is operated through reduction gearing by a reversible electric motor 118 controlled by a thermo-couple 130. The fore-hearth may be used with either a feeder or suction gathering machine.
GB2902130A 1930-09-27 1930-09-27 Improvements in forehearths for glass melting furnaces Expired GB355555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2902130A GB355555A (en) 1930-09-27 1930-09-27 Improvements in forehearths for glass melting furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2902130A GB355555A (en) 1930-09-27 1930-09-27 Improvements in forehearths for glass melting furnaces

Publications (1)

Publication Number Publication Date
GB355555A true GB355555A (en) 1931-08-27

Family

ID=10284973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2902130A Expired GB355555A (en) 1930-09-27 1930-09-27 Improvements in forehearths for glass melting furnaces

Country Status (1)

Country Link
GB (1) GB355555A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145427A2 (en) * 1983-12-07 1985-06-19 Emhart Industries, Inc. Glass forehearth
EP0484162A2 (en) * 1990-10-31 1992-05-06 Clive Ward Method and apparatus for conveying molten glass
CN108383379A (en) * 2016-05-19 2018-08-10 林友富 A kind of production method of improved high pressure resistant borosilicate tube
CN115124221A (en) * 2022-07-04 2022-09-30 凤阳凯盛硅材料有限公司 Method for replacing flow regulating flashboard for glass production and auxiliary device thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145427A2 (en) * 1983-12-07 1985-06-19 Emhart Industries, Inc. Glass forehearth
EP0145427A3 (en) * 1983-12-07 1985-07-10 Emhart Industries, Inc. Glass forehearth
EP0275345A1 (en) * 1983-12-07 1988-07-27 Emhart Industries, Inc. Glass forehearth
EP0484162A2 (en) * 1990-10-31 1992-05-06 Clive Ward Method and apparatus for conveying molten glass
EP0484162A3 (en) * 1990-10-31 1993-01-13 Clive Ward Method and apparatus for conveying molten glass
CN108383379A (en) * 2016-05-19 2018-08-10 林友富 A kind of production method of improved high pressure resistant borosilicate tube
CN108383379B (en) * 2016-05-19 2020-09-01 林友富 Improved manufacturing method of high-pressure-resistant borosilicate tube
CN115124221A (en) * 2022-07-04 2022-09-30 凤阳凯盛硅材料有限公司 Method for replacing flow regulating flashboard for glass production and auxiliary device thereof

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