Ppg Industries, Inc.

Francis A Radecki

Ronald L Schwenninger

Henry C Goode

Gary N Hughes

Robert A Lawhon

Bert K Krushinski

In a float glass chamber, particularly in a region operating at higher than usual temperatures, integrity of the bottom structure is sustained by employing wedge shaped bottom blocks that are maintained in compression by externally applied mechanical forces. The arrangement permits the use of a bi-layer bottom construction with a high alumina upper course and a clay bottom course.

Compressed, wedged float glass bottom structure

In a method and apparatus for liquefying material such as glass batch, primary thermal protection for the vessel is provided by a lining of the batch material, with secondary protection being provided by a partial refractory lining on the interior of the vessel in regions where the primary protection is irregular.

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Ross Township, PA, United States of America

Francis A Radecki