Society of Glass Technology · [Sheffield] · leaf 657
mark caused byreturning the cut-off knife in position, as at present; (2) a verticallyrising blow mould; and (3) the use of compressed air for openingand closing the blow moulds. On each arm of the machine a bracket, K (Fig. 125), is securedbelow the blow mould, and this bracket carries two air… … Fig. 125. Fig. 127. D, from the rotating tank, F, the shears cut off the thread of metaland is then withdrawn. The bottom plate, Q, is then raised, andcloses the bottom of the parison mould, as shown in Fig. 127. Theplate, Q, remains in place when the parison mould is open, andthus prevents the…
Glass
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