C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/9.1
C03B 37/02 (2006.01) C03B 5/20 (2006.01) C03B 37/08 (2006.01)
Patent
CA 1054372
ABSTRACT In the production of glass fibres by the use of a multi- tipped bushing arranged beneath an opening in the floor of a fore- hearth along which the molten glass flows, an apertured cover plate is disposed across the opening at or near its bottom and carries an upwardly extending duct connecting the aperture in the cover plate with a position in the fore hearth above the floor and below the normal surface level of the glass, so that molten glass is supplied to the bushing from this position, where the glass is uninfluenced by cooling effects, and on its way thence to the bushing the glass can only contact the surface of the duct which is kept hot by the molten glass in the floor opening outside the duct. The risk of devitrified glass reaching the bushing and causing breakages is thereby much reduced.
225733
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