Rotary forehearth

Details Rotary forehearth Rotary forehearth

1980-12-30

1982-06-29

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 101, 65346, C03B 37025

Patent

active

043370730

ABSTRACT:
A rotary forehearth for use particularly in formation of glass fiber filaments through bushings is disclosed. A stator portion of the forehearth carries the bushings and a rotor portion of the forehearth receives molten glass from a suitable supply source, mixing the glass to homogenize it and distribute it at a uniform temperature, and disperses the uniform temperature molten glass to the bushings. The rotary forehearth is heated by suitable assemblies which maintain all portions of the forehearth at a uniform teperature. A uniform heating of the rotary forehearth and a uniform mixing and temperature of the molten glass is provided with a single controller. The bushings are uniformly heated and are supplied with molten glass at a nearly constant viscosity to facilitate the formation of glass fiber filaments having substantially less variation in diameter than heretofore possible.

REFERENCES:
patent: 2460547 (1949-02-01), Stevens
patent: 3265477 (1966-08-01), McCoppin
patent: 3285720 (1966-11-01), Drummond
patent: 4203746 (1980-05-01), Battigelli et al.
patent: 4203747 (1980-05-01), Fezenko

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