Marson, Percival · London, New York [etc.] Sir I. Pitman & Sons · leaf 69
vered Pot Type). furnace is that, during the reversing in the direction ofthe fire gases, the greatest heat is suddenly brought tobear on the cooler pots, resulting in short life for thepots. The temperature of the incoming air is not soconstant as ^vith the recuperative type of furnace;however,… … 54 GLASS The Hermansen furnace, like the Siemens furnace, isproducer gas-fired. The gas producer is built withinthe body of the furnace, (P) below the glass house floor.On either side of this gas producer the recuperators aresituated. These are constructed by an arrangement offire-clay tubes,…
Glass manufacture
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