Society of Glass Technology · [Sheffield] · leaf 519
, 16, so as to close thethreaded ends of the levers, 14. The crosshead then strikes a stop21, on the mandrel and thus withdraws the plunger, 12, from themould. An annular air-jripe, E, perforated on its inner side suppliesair jets to cool the plunger, 12. In use, the mould is closed, theplunger… … Fig. 71. Fig. 1-2. it is blown and has its neck inserted, while still hot, into the mouldas shown. A charge of metal is then dropped into the mouldcavity and the plunger-mechanism is moved into the position shownin full lines, the moulds being locked by means of cams and aweight, D4. The…
Glass
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