Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
193 words
Apparatus for manufacturing glass filaments comprising means for holding a body of molten glass to be formed into said filaments, said means having an inner rectangularly-shaped bushing plate for supporting said body, a plurality of tubes extending below said inner plate each communicating with said holding means through an orifice in said inner plate whereby molten glass may flow out of said holding means, an outer rectangularly-shaped bushing plate spaced from said innder bushing plate spaced from said inner bushing plate, the space between said outer bushing plate and said inner bushing plate being filled with air and enclosed, said outer bushing plate being provided with a plurality of equally spaced apertures corresponding in number and arrangement to the said orifices also equally spaced, to receive the lower ends of said tubes, said lower ends being disposed without extending downward below said outer bushing plate, said outer plate being made of electricallyconductive material providing electrical resistive heating zones therein, and means for supplying an electric current to said outer plate and a third plate located between and parallel to the inner and outer plates in heat conductive relation to the tubes extending therethrough.
Claim 2
Dependent Claim
193 words
Apparatus for manufacturing glass filaments comprising means for holding a body of molten glass to be formed into said filaments, said means having an inner rectangularly-shaped bushing plate for supporting said body, a plurality of tubes extending below said inner plate each communicating with said holding means through an orifice in said inner plate whereby molten glass may flow out of said holding means, an outer rectangularly-shaped bushing plate spaced from said innder bushing plate spaced from said inner bushing plate, the space between said outer bushing plate and said inner bushing plate being filled with air and enclosed, said outer bushing plate being provided with a plurality of equally spaced apertures corresponding in number and arrangement to the said orifices also equally spaced, to receive the lower ends of said tubes, said lower ends being disposed without extending downward below said outer bushing plate, said outer plate being made of electricallyconductive material providing electrical resistive heating zones therein, and means for supplying an electric current to said outer plate and a third plate located between and parallel to the inner and outer plates in heat conductive relation to the tubes extending therethrough.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1 in which means for cooling molten glass flowing from at least some of the tubes are provided below the bottom plate.
Claim 4
Dependent Claim
14 words
Apparatus according to claim 2 in which the cooling means include a liquid coolant.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 1 in which the heating zones are provided with separate controls.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 1 in which portions of the outer plate extend outwardly of the glass holding means and are bent downwardly to deflect air currents around the lower ends of the tubes.