Society of Glass Technology · [Sheffield] · leaf 596
are aseries of steep-pitched threads, 9,which engage the glass. Thecylinders, 7, are pressed togetherand are driven by suitable means.The rollers are rotated at such a speed that the threads will sweepacross the somewhat plastic surface of the sheet at a faster speedthan the sheet is being drawn.…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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