Nippon Sheet Glass Company, Limited

Kouichi Sakaguchi

Hiroyuki Tanaka

Yukihito Nagashima

Shigeki Nakagaki

Takashi Sunada

Seiichiro Manabe

Yoshiyuki Inaka

A vertical glass melting furnace of the type having an inlet for raw materials at the top thereof, an outlet for molten glass at the bottom thereof, and a tabular electric resistance heating element for melting which is immersed at some level in molten glass, has at least one opening, and covers almost entirely the cross-section of the furnace at that level, the vertical glass melting furnace comprising a stirrer which extends from above the furnace and passes through the batch layer and the tabular heating element so that the stirrer brings about forced circulation for homogenization of the molten glass which has passed through the tabular heating element and stays in the region below the tabular heating element.

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Osaka, Japan

Kouichi Sakaguchi