Society of Glass Technology · [Sheffield] · leaf 538
Fig. 91. … ?m m^^A Fig. 92. Fig. 93. chambers, 6, and the burning gases then pass longitudinally alongthe furnace chamber into the working chamber, 11, which theyleave immediately through ports, 8, directed rearwardly and trans-versely of the inlet ports. The air is supplied in excess, and owingto this and to…
Glass
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