Society of Glass Technology · [Sheffield] · leaf 643
ntroller comprises a roller, C, with one or more arms, C1,to retain the pans, T, in the furnace, and a spring or lever-operated 198 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. catch, C2. The opening of one door of the furnace may be arrangedto open or close the other door and also to operate the…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
