Society of Glass Technology · [Sheffield] · leaf 533
such as graphitewhich has been fired at a high temperature. H. G. C. 132. Process for Making Transparent Fused Silica. H. O. Barnard, and H. George, both in Paris, Assignors to Soc. Anon.Quartz et Sdlice, Paris (Brit. Pat., No. 190476, December 8th,1922. Convention date, December 16th, 1921. Not… … Fig. 66. GLASS : MANUFACTURE AND PROPERTIES. 89 compressing it into moulds of the desired shape at a pressure ofabout 200 kg. per square centimetre. The moulded mass is nextheated at about 150° to get rid of moisture, and is then fused inan electric furnace. Agglomeration of the raw material is…
Glass
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