Device for the continuous manufacture of elongated bodies starting from unmolten solid starting material
AssigneeU.S. Philips Corporation
InventorWilhelmus C. P. M. Meerman
Life of this patent
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Abstract
A device for continuously making elongated bodies, particularly rods of glass or optical fibers, includes a melting tube for containing molten material and surrounded by a cooling jacket. Within the cooling jacket exists a high frequency electromagnetic coil for heating and melting the starting material in the melting tube. A plurality of metal wires extending parallel to the axis of the melting tube and being grounded as well as a tube of insulating material are located between the wall of the melting tube and the coil. The melt traverses a heating zone and a refining zone so that a solid elongated body is withdrawn from the bottom of the melting tube.
Claims5
A device for continuous manufacture of elongated bodies comprising:
- a vertically arranged tube for containing melted starting material,
- a cooling jacket surrounding a heating zone of said tube,
- a coil of metal tape around said heating zone within said cooling jacket, said coil generating a high-frequency electromagnetic field during operation,
- a plurality of metal wires extending parallel to the axis of said tube, said wires being located between said coil and said tube,
- a quartz tube located between said metal wires and said coil, and
- means for flowing coolant through said cooling jacket around said coil and said metal wires.
Dependencies are inferred from the claim text.