Society of Glass Technology · [Sheffield] · leaf 649
159, which in turn support tiles, 22, the legs of the T-shapedtiles, 21, being straddled by the flanges of channelled tiles, 23The whole forms a composite arched roof for the muffle, the jointsof which are gas-tight. The spaces, 29, between the channelledtiles, 23, form secondary combustion… … Fig. 159.
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
