Society of Glass Technology · [Sheffield] · leaf 526
from theannular opening, A, impingesupon the interior of the cylin-der, 12, at a point where theglass is still soft. The tube,24, may be rocked by means ofa lever, 31, so as to move thediscs, 16, 20, bodily; and theupper disc, 20, may be rockedindependently by a lever, 37,so as to vary the width of… … 96 JOURNAL OF TTIE SOCIETY OV GLASS TECHNOLOGY 171. Drawing Lens-fronted Thermometer Tubing. A. J. H. Haddan, London (Corning GlassWorks, U.S.A.) (Brit. Pat. No.152567, March 2nd, 1920, No.0350).—The blanks from which lens-fronted thermometers are drawn areshaped in a mould having pivotedsides, 10,…
Glass
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