Society of Glass Technology · [Sheffield] · leaf 503
gh a numberof passages, i (Fig. 51), beneath thebath, b, to a cross-passage, j, whence itis conveyed by vertical passages, k, to achamber, g, in the crown and passesby ports, n, to the furnace. Gas isdelivered from a passage, e, throughports, /, alternating with the ports, n.The waste gases pass… … Fig. 51. 142. Removal of Scum in
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
