Society of Glass Technology · [Sheffield] · leaf 512
R THE WORKING OF GLASS. 81 by a piston, 50, so as to bring the blowhead into position for com-pressing the charge in the parison mould. The neck rod, 54, israised by a piston, 55, and then lowered to admit air for the pre-liminary blowing in the parison mould. When the parison mouldhas been opened,… … Fig. 60. rack mechanism, 78, so as to swing the blank down into the finish-ing mould, 65, which is then closed and the blowing completed by ahead, 98. The finishing-mould, 65, is next opened and the cylinder,G, is raised slightly by a piston, 88, so as to lift the blank clear of thefinishing mould…
Glass
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