Society of Glass Technology · [Sheffield] · leaf 672
\s / / / / / / s / , .s / Fig. 154. from the heat radiated from the hot metal below the drawing-slot. G. D. 268. Drawing Glass Cylinders. Octave C. Natalis (U.S.A.Pat., January 1st, 1918, No. 1251561. Filed February 28th, … Fia. 155. 1917, No. 151474).—In order to overcome variations in the thick-ness of a cylinder as it is being drawn, means are provided for 190 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. directing either a hot or a cold blast on the cylinder, the tempera-ture of which may be varied at different…
Glass
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