Society of Glass Technology · [Sheffield] · leaf 477
w trough - shapedupper part, 16, of a funnel,the lower part, 14, ofwhich is formed with adownwardly enlargedchannel, 17. The funnelis supported in the bottomof a chamber, 5, which isinserted in the upper partof the tank, 1. Whendrawing is taking place,the lower part of thefunnel is immersed in… … Fig. 50. MACHINERY FOR THE WORKING OF GLASS. 77 an extent that a meniscus forms in the part, 16. Hot gases fromconduits, 3, circulate round the upper part of the funnel and underthe chamber, 5. The chamber, 5, or part of it, is mounted so thatit can be raised to lift the funnel clear of the glass…
Glass
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