Society of Glass Technology · [Sheffield] · leaf 453
g. The glory-hole is heated by gas burners, the air supply of whichis preheated by circulating through a recuperator, 81, surroundingthe flue, 82. An inspection window is provided to enable theoperator to watch the parison, and counterweighted doors areprovided to close the inlet and exit of the… … Fia.21. MACHINERY FOR THE WORKING OF GLASS. 53 114, and is closed and locked by a lever, 98. The mould is rotatedor oscillated during blowing by a handle, 113, and the push at the bottom of the bottle is formed by the mould bottom of conicalshape, which is raised by a handle, 108. After the mould…
Glass
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