Society of Glass Technology · [Sheffield] · leaf 627
h the pipe is within a chamber, 16,preferably lined with heat-insulating material, 17, and providedwith burners, 18, by which it may be heated. Near one end thepipe carries a sprocket wheel, 20, driven by a chain, 21. An 226 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. inclined trough, 30, is… … Fig. 146. its rotation, it is evident that broken bulbs which cannot rotatemay be separated from the others by mounting the heating tubeat an angle to the horizontal and feeding the bulbs into the lowerends. By this means, only complete bulbs will climb up theincline and the defective ones will…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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