Society of Glass Technology · [Sheffield] · leaf 517
time, by theaction of inclined portions,6, of an interrupted flangedring, 5, attached to it, whichride over rollers, 7, mountedon fixed supports. The divi-sion wall, 2, is thus liftedout of one cross-trough andlowered into the other.Spring devices are providedto take the shock when thechamber, 1,… … FUELS, REFHACTORIES, AND FURNACES. 139
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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