Society of Glass Technology · [Sheffield] · leaf 521
hearsis blown back into the hole,13, by a blast of hot air from an annular orifice, 51. Theair for this blast is heated bypassage through a pipe, 48,coiled in the asbestos lag-ging, L. The blast pressure isarranged to diminish grad-ually during each application. An oil spray is provided to… … ?^K> %. dm, A9ci- \ fl v
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
