Society of Glass Technology · [Sheffield] · leaf 569
Fig. 118. chambers at each side with a separate air-supply for each. Inthe tunnel kiln shown, gas from the channel, a, enters a combustion … Fig. 119. chamber, 1, outside the oven wall by a dampered opening, b. Airfor combustion is supplied by pipes, d, and the chambers, e, f, and FUELS, REFRACTORIES, AND FURNACES. 139 the flames pass into the second combustion chamber, 2, and thenceto burners or orifices, p, of varying sizes, opening…
Glass
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