Society of Glass Technology · [Sheffield] · leaf 557
bedin the specification. G. D. 175. New Method for Making Plate Glass. W. H. Powell(U.S.A. Pat., No. 1381591, June 14th, 1921. Filed December12th, 1919, No. 344365).—The invention consists in making plateglass by casting the plate, converting the cast plate, heating therough surface thus exposed in… … Fig. 116. After withdrawal, it is allowed to stand until the contained glass, A,has set into a plate which will, of course, have a polished surface.When the glass has sufficiently set, the ladle is inverted to depositthe plate on the top of an iron box, 5, the top, 8, being perforated.The box is…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
