Society of Glass Technology · [Sheffield] · leaf 705
oject from the side of the tank, 2, and serve for theadmission of the air supply. The hot gases leave the tank byflues, 4, which lead into flues, 3, connected with the stack, 8, byway of lower flues, 7. The flues, 3, surround the air flues, 11, sothat the heat of the burnt gases is used to heat the… … Fia. 197. CHEMICAL ANALYSIS. 305 15th, 1922. Filed August 12th, 1921, No. 491701).—The inventionconsists of a muffle flattening oven which is fitted with means toenable the temperature of its different parts to be regulated tosecure the desired heat distribution. The flattening stones, 5,are…
Glass
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