Society of Glass Technology · [Sheffield] · leaf 516
, 8 (Fig. 65), beneath thehearth, and with an air-heatingchamber, 9, below, from whichair passes through vertical pas-sages, 6, to a gas- and air-mix-ing chamber, 3, arranged be-tween the gas-producer, 5, andthe furnace chamber. Thegases from the mixing chamberpass downward to the furnacechamber.… … 138 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. No. 17843).—Gas- and air-reversing valves for regenerative furnacesare constructed with a cylindrical chamber or bell, 1 (Fig. 6G),having a diametral divisioji wall, L\ which is seated in an annular
Glass
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