Method and apparatus for the production of glass fibres
OwnerJohn H. Willisinventor
Life of this patent
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Abstract
Apparatus for producing glass fibres by flowing a plurality of streams of molten glass through an electrically-heated bushing comprising a metal plate having a plurality of orifices therein, together with means for flowing an electric current through said plate to heat it, and the bushing is provided with at least two spaced apart electrical terminals at each end thereof, together with adjustable connector means for each of said terminals, whereby in use, the current flowing through each of said terminals is independently adjustable.
Claims5
In an apparatus for producing glass fibres by flowing a plurality of streams of molten glass through an electrically-heated bushing comprising a metal plate with a plurality of orifices therein, together with means for flowing an electric current through said plate to heat it, the improvement wherein the bushing is provided with at least two electrical terminals spaced apart widthwise of the bushing at each end thereof, together with individually adjustable connector means for each of said terminals, whereby in use the current flowing through each of said terminals is independently adjustable.
In a process for the production of glass fibres by flowing molten glass through orifices in an electrically heated bushing, the improvement which comprises heating said bushing by passing an electric current through it by means of at least two (spaced-apart) terminals spaced apart widthwise of the bushing at each end thereof, and independently adjusting the current flowing through each of said terminals, whereby the current distribution in the bushing and the heating effect thereof is adjusted so that said bushing yields glass fibres of substantially uniform diameter.
Dependencies are inferred from the claim text.