The Practical mechanic's journal . em with an iron fork, andputs them into the superior oven, marked d (fig. 1), to anneal them. Ifhe does not take especial care, he will break the glass, instead of anneal-ing them, this ware being extremely brittle. So also in the manufacture of crown or window glass, Blancourts ac-count of the practices two hundred years ago sounds so strangely familiarto a modern glassmaker, as to \-endcr it a difficult matter to believe thatit is not a quaintly told description of the modem process. We subjointhe description referred to, and this will end our borrowings fr
The Practical mechanic's journal . em with an iron fork, andputs them into the superior oven, marked d (fig. 1), to anneal them. Ifhe does not take especial care, he will break the glass, instead of anneal-ing them, this ware being extremely brittle. So also in the manufacture of crown or window glass, Blancourts ac-count of the practices two hundred years ago sounds so strangely familiarto a modern glassmaker, as to \-endcr it a difficult matter to believe thatit is not a quaintly told description of the modem process. We subjointhe description referred to, and this will end our borrowings from the Art of Glass, a book we would strongly recommend all glassmakers,who are interested in the history of their beautiful art, to read :— This work passes through three hands—the first through the hands ofgentlemen apprentices, who gather the matter with their hollow ironthat is in the pots in the little working holes, when it is fit to be used orworked, and that till three heats; then he puts it on a marble. Then a Fig.
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Keywords: ., bookcentury1800, bookdecade1840, bookidpra, booksubjecttechnology
