Society of Glass Technology · [Sheffield] · leaf 647
temporarily shutting down a tank furnace fitted with a 246 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. flow feeder, it is generally necessary to plug up the flow tube andchill the glass round the plug. When resuming work, the remeltingof this glass is a difficult and prolonged operation. The… … Fig. 162. tank and the discharge chamber. A groove, 21, is cut in thisblock, so that in the position shown in Fig. 162 the glass flowsinto the underside of the block and out at the top of the grooveinto the discharge chamber. When it is desired to stop the feederworking, the block, 20, is turned…
Glass
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