Society of Glass Technology · [Sheffield] · leaf 596
allowing it to cool in an annealing kiln. The furnace, 18(Figs. 97 and 98), is very like a lehr. It is gas heated and hasin its heating chamber an upper and a lower track formed byrails, 42. A plate of glass, after being raised to 500° F., is placedin a perforated carrier, 60, which is put into the… … 5LjX
Glass
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