Society of Glass Technology · [Sheffield] · leaf 584
eextended in the form of across. These arms carry rollers, 17, at their outer ends which make contact with the corners of theglass tube and ensure that it is drawn in with a rectangular section. G. D. 267. Machine for Making Vacuum Flasks. E. P. Lindahl,Cincinnati, Ohio, Assignor to The Icy-Hot… … Fig. 128. 154 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY.
Glass
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