Society of Glass Technology · [Sheffield] · leaf 527
CHNOLOGY 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, the inclination of which canbe varied… … 172. Drawing Glass Cylinders. E. C. R. Marks, London(Universal Glass Co., U.S.A.) (Brit. Pat. No. 151361, June 23rd,1919, No. 15764).—Relates to a bait, for drawing glass cylinders,having movable portions to allow for the contraction of the glassand to release the finished cylinder. The bait is…
Glass
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