Society of Glass Technology · [Sheffield] · leaf 728
, and these barshave serrated faces, 15, 18a, asshown. The faces of the barsare also fitted with strips, 16, 19, of German silver, or other suitable material, which is heatedelectrically. Thus the sheet, while gripped by the bars, is heatedalong a transverse line, where it is weakened by the… … Fig. 222.
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
