US3492109A - Glass-engaging edge roll - Google Patents

Glass-engaging edge roll Download PDF

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Publication number
US3492109A
US3492109A US659252A US3492109DA US3492109A US 3492109 A US3492109 A US 3492109A US 659252 A US659252 A US 659252A US 3492109D A US3492109D A US 3492109DA US 3492109 A US3492109 A US 3492109A
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US
United States
Prior art keywords
ferrule
roll
glass
barrel
bath
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 - Lifetime
Application number
US659252A
Other languages
English (en)
Inventor
Albert Sidney Robinson
Frederick William Silverwood
Jack Lawrenson
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.)
Pilkington Group Ltd
Original Assignee
Pilkington Brothers Ltd
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 Pilkington Brothers Ltd filed Critical Pilkington Brothers Ltd
Application granted granted Critical
Publication of US3492109A publication Critical patent/US3492109A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B18/00—Shaping glass in contact with the surface of a liquid
    • C03B18/02—Forming sheets
    • C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
    • C03B18/06—Changing or regulating the dimensions of the molten glass ribbon using mechanical means, e.g. restrictor bars, edge rollers

Definitions

  • An edge roll for engaging a margin of a ribbon of glass advancing along a bath of molten metal has a barrel of heat-resistant metal carrying a high melting point ferrule held on the barrel by a key which fits into overlying keyway parts in the ferrule and barrel and which is held in position by a protective retaining piece.
  • This invention relates to edge rolls for engaging a margin of a ribbon of glass as it is advanced along a bath of molten metal.
  • the invention relates to edge rolls for use in apparatus for manufacturing flat glass in ribbon form as described and claimed in United States Patent No. 3,222,154.
  • an edge roll for engaging a margin of a ribbon of glass as it is advanced along a bath of molten metal comprises a barrel of heat-resistant metal adapted to project through the side of the bath and carrying at one end a ferrule of high melting point material for engaging the glass.
  • the barrel is of heat-resistant steel.
  • the roll barrel is a rod shaped member, and the other end of the roll barrel is adapted for connection to driving means.
  • the roll barrel may be formed with a central bore so that a cooling fluid can be circulated through the roll barrel.
  • the ferrule is made of a material which is not wetted by molten glass.
  • the ferrule may be made of carbon, preferably in the form of graphite.
  • the ferrule may be made of spheroidal graphite cast iron with a surface coating of tungsten carbide, or titanium carbide.
  • the ferrule may be made of spheroidal graphite cast iron with a layer of chromium diffused into the outer surface of the cast iron.
  • the roll barrel is preferably cooled, for example by circulating water through the central bore of the roll barrel.
  • the ferrule is formed with an internal keyway which includes a longitudinally extending part overlying the keyway in the roll barrel and an annular internal groove in which a T-shaped retaining piece fits, which retaining piece is fixed to the roll barrel to hold in position a key engaging in said longitudinally extending keyways.
  • the key and retaining piece are made of spheroidal graphite cast iron.
  • the invention also comprehends apparatus for use in the manufacture of flat glass in ribbon form comprising in combination a tank structure containing a bath of molten metal, and edge rolls projecting inwardly through the tank structure to engage the margins of a ribbon of glass as it is advanced along the bath.
  • FIGURE 1 is a view partly in section of an example of an edge roll according to the invention showing a ferrule keyed and fixed to a rod shaped roll barrel,
  • FIGURE 2 is a section on line IIII of FIGURE 1, and
  • FIGURES 3 and 4 illustrate a T-shaped retaining piece which is employed as a part of an edge roll according to the invention.
  • an edge roll for engaging a margin of a ribbon of glass as it is advanced along a bath of molten metal comprises a main body of heat resistant metal, preferably heat-resistant steel one end of which. is adapted to project through the side of a tank structure which contains the bath of molten metal, for example a tank structure of the kind described and claimed in United States Patent No. 3,222,154.
  • the rod-shaped main body or barrel of the edge roll consists of a cylindrical part 1 which projects through the side wall of a tank structure, and a cylindrical part 2 of lesser diameter, the end of which is threaded, as indicated at 3, so that the other end of the roll barrel can be connected to driving means for driving the roller at a predetermined speed commensurate with the speed of advance of the ribbon of glass along the bath of molten metal.
  • the part 2 is separated from the part 1 by a shoul der 4 machined on the roll barrel.
  • the end of the roll barrel which projects into the tank structure is machined to form a part 5 of lesser diameter than the part 1, and a bore 6 is drilled through the roll barrel from the driven end 3 to within a short distance of the end of the roll barrel part 5 so that a cooling fluid, for example water can be circulated through the roll barrel if necessary.
  • a cooling fluid for example water
  • a longitudinally extending keyway 7 is formed in the barrel part 5, extending along the whole length of that part.
  • the keyway 7 is of rectangular form as indicated in FIGURE 2.
  • a ferrule 8 is carried on the roll barrel part 5.
  • the ferrule 8 is preferably made of a material which is not wetted by molten glass, for example carbon in the form of graphite, but other non-wettable materials may be used, for example boron nitride.
  • the outer surface of the outer end of the ferrule 8 is shaped conically, as indicated at 9, and the ferrule 8 is slid over the barrel part 5, as shown in FIGURE 1.
  • An internal keyway including a longitudinally extending part 10 of rectangular cross-section is formed in the inner surface of the ferrule 8, and this keyway part 10 overlies the keyway 7 when the ferrule 8 is in position on the roll barrel.
  • a key 11 in the form of a bar of rectangular cross-section fits in the cavity formed by the overlying keyways 7 and 10. The key 11 is not as long as the cavity 7, 10.
  • the ferrule is formed, near its open end, with an annular internal groove 12 which communicates with the keyway part 10.
  • a T-shaped retaining piece which is shown in detail in FIGURES 3 and 4, completes the fixing of the ferrule to the barrel.
  • the retaining piece consists of a stem 13 which fits into the end of the keyways 7 and 10 and an integral head 14 which is curved so as to fit into the annular groove 12, as shown in FIG- URE 1.
  • the head 14 abuts against the key 11 to hold it in position and the end of the stem 13 which projects outwardly from the ferrule is fixed to the roll barrel by a grub screw 15.
  • the stem 13 may be welded to the roll barrel.
  • the means fixing the ferrule to the roll barrel is not exposed to attack by the molten metal of the bath, and an edge roll constructed according to the invention has a long life under the arduous conditions of operation when immersed in a molten metal bath.
  • An edge roll for engaging a margin of a ribbon of glass as it is advanced along a bath of molten metal comprising a barrel of heat-resistant metal adapted to project through the side of the bath and carrying at one end a ferrule of high melting point material for engaging the glass, said one end of the roll barrel being formed with a longitudinally extending keyway and the ferrule being formed with an internal keyway which includes a longitudinally extending part overlying the keyway in the roll barrel and an annular transverse groove, and further comprising a key in the form of a longitudinally extending bar which engages in both said keyways and secures the ferrule to the roll barrel along the length of the ferrule, and a T-shaped retaining piece the leg of which fits into the end of the keyways and the-head of Which fits into said annular internal groove and which is fixed to the roll barrel to hold the key in position and protect the key from the environment of use of the edge roll.
  • ferrule is constituted of material selected from the group of materials consisting of carbon, spheroidal graphite cast iron with a surface coating of tungsten carbide, spheroidal graphite cast iron with a surface coating of titanium car bide, and spheroidal graphite cast iron with an outer diffused layer of chromium.
  • Apparatus for use in the manufacture of flat glass in ribbon form comprising in combination a tank structure containing a bath of molten metal, and edge rolls according to claim 1, projecting inwardly through the tank structure to engage the margins of a ribbon of glass as it is advanced along the bath.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US659252A 1963-02-25 1967-06-20 Glass-engaging edge roll Expired - Lifetime US3492109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7547/63A GB1078271A (en) 1963-02-25 1963-02-25 Improvements in or relating to apparatus for the manufacture of flat glass

Publications (1)

Publication Number Publication Date
US3492109A true US3492109A (en) 1970-01-27

Family

ID=9835227

Family Applications (1)

Application Number Title Priority Date Filing Date
US659252A Expired - Lifetime US3492109A (en) 1963-02-25 1967-06-20 Glass-engaging edge roll

Country Status (6)

Country Link
US (1) US3492109A (xx)
CH (1) CH422238A (xx)
DE (1) DE1471963B2 (xx)
ES (1) ES296655A1 (xx)
GB (1) GB1078271A (xx)
LU (1) LU45520A1 (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709673A (en) * 1970-11-25 1973-01-09 Ppg Industries Inc Edge-roll machine in float glass apparatus
US3853525A (en) * 1973-08-02 1974-12-10 H Gorman Glass sheet conveying and supporting rolls, and apparatus employing such rolls
US4260404A (en) * 1979-05-09 1981-04-07 Ppg Industries, Inc. Method for reducing roll marking of glass sheets
US4274857A (en) * 1979-11-02 1981-06-23 Ppg Industries, Inc. Treating covers for press bending molds, and method of press bending glass sheets
US6357262B1 (en) * 1999-04-26 2002-03-19 Tamglass Ltd. Oy Apparatus and method for reducing scratching when bending glass sheets

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216815A (en) * 1960-11-10 1965-11-09 Babcock & Wilcox Co Tapping nozzle for molten refractories
US3220813A (en) * 1961-03-13 1965-11-30 Saint Gobain Method and apparatus for removing impurities in manufacture of glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216815A (en) * 1960-11-10 1965-11-09 Babcock & Wilcox Co Tapping nozzle for molten refractories
US3220813A (en) * 1961-03-13 1965-11-30 Saint Gobain Method and apparatus for removing impurities in manufacture of glass

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709673A (en) * 1970-11-25 1973-01-09 Ppg Industries Inc Edge-roll machine in float glass apparatus
US3853525A (en) * 1973-08-02 1974-12-10 H Gorman Glass sheet conveying and supporting rolls, and apparatus employing such rolls
US4260404A (en) * 1979-05-09 1981-04-07 Ppg Industries, Inc. Method for reducing roll marking of glass sheets
US4274857A (en) * 1979-11-02 1981-06-23 Ppg Industries, Inc. Treating covers for press bending molds, and method of press bending glass sheets
US6357262B1 (en) * 1999-04-26 2002-03-19 Tamglass Ltd. Oy Apparatus and method for reducing scratching when bending glass sheets

Also Published As

Publication number Publication date
GB1078271A (en) 1967-08-09
DE1471963A1 (de) 1969-03-13
DE1471963B2 (de) 1970-07-30
CH422238A (de) 1966-10-15
ES296655A1 (es) 1964-07-01
LU45520A1 (xx) 1965-08-25

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