Society of Glass Technology · [Sheffield] · leaf 438
r cone 36 was melted down in one hour, the furnace using156 cubic feet of towns gas. The maximum temperature attainedwas 3400° F., being within 200° F. of the theoretical maximum.The advantages claimed for the furnace included simplicity, lowfuel consumption, ease of observation and measuring… … Fig. 12. 1st, 1921. Filed May 6th, 1920, No. 379203).—The inventionconsists of a tank furnace particularly intended for working inconjunction with a flow-feed, andis of the type in which the airsupply is preheated by passingthrough a recuperator. As shownin longitudinal section in Fig. 13,the air…
Glass
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