Society of Glass Technology · [Sheffield] · leaf 656
inter-mit-tingly rotating frame,15, carrying twelvechucks, 13, whichhold lengths of glasstubing, 20, and rotateon their own axes.The frame, 15, haltstwelve times duringeach revolution foran operation to beperformed on each ofthe glass tubes, and,as a complete bulb isproduced by six ope-rations, two… … Fig. 175. 156 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. required height and the chuck is opened so as to drop the bulbon to the gauge, 23. The chuck is then closed, the gauge, 23, lowered, and the bulb moved to station,B, where the complete bulb is cut offby a flame, 51, and the tube, 20,…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
