Society of Glass Technology · [Sheffield] · leaf 501
oul,Paris (Brit. Pat., No. 169136, November 19th, 1920).—Relatesto drawing films of silica, alumina, or like refractory substance 100 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. having a thickness of the order of OOOl mm. and a width of about6 cm. Such films are stated to be strong and flexible.… … Fig. 80. Fig. 81. on a drum, n, and draw up a film, /, from a bath, a, of themolten material. The drawing may be started by a cross wire, I1.The wires may be cut away from the film when it is subsequentlyunwound from the drum, or they may be severed from it as it iswound on to the drum. H. G. C.…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
