Libbey-owens-ford Co.

Richard R Snow

J Joseph Cheng

Geoffrey Evans

Harold B Milnes

Charles R Bamford

Combination tool

An infrared energy and ultraviolet radiation absorbing green-colored high total iron containing soda-lime-silica glass batch includes typical soda-lime-silica glass batch ingredients, an ultraviolet radiation absorbing quantity of a cerium containing compound, a high amount of total iron, and a surprisingly small amount of carbon which eliminates silica scum formation in the melt and silica inclusion faults in the finished glass.

Batch composition for making infrared and ultraviolet radiation

The superstructure of a float chamber containing a bath of molten metal and having a confined atmosphere is purged of metal condensates adhering thereto on controlled occasions to produce a glass ribbon substantially free of 'top speck' defects. Minute molten metal deposits condensing on the superstructure of the chamber are removed therefrom at brief and infrequent time intervals by introducing a fluxing agent such as a halogen or halide into the confined atmosphere causing the minute molten metal deposits to coalesce and drop from the superstructure onto the glass ribbon and/or the molten metal bath at the controlled occasions.

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Perrysburg, OH, United States of America

Richard R Snow