Society of Glass Technology · [Sheffield] · leaf 660
ooled internally and is fitted with a suctiondevice for intermittently retarding the flow of metal through anorifice in the forehearth. The metal passes from the furnace, 21,through a channel, 20, to the plunger, 23, the flow of metal beingregulated by a gate, 22, and its temperature being… … 34 36 35 Fig. 136. with a central depending tongue, 28. Thus, when the gate is raisedto the position shown in Fig. 136, the metal flows around the tongueand along the side portions of the spout. It is stated that theretardation of the central and hotter portion of the stream of metalmaintains a…
Glass
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