Society of Glass Technology · [Sheffield] · leaf 534
ctrically or by a gas burner.It was best to use a cable wire of the woven type, as this was flexible,retained more heat than a chain, and allowed closer contact withthe glass, thus rendering cracking off relatively easy. S. E. 186. Method and Apparatus for Cutting and SeveringGlass. F. J. Rippl… … Fig. 95. articles such as small electric lamp bulbs from the glass tube fromwhich they have been blown. It wasfound that by imparting to the severingdevices at the moment of engagementwith the glass a vibrating cutting move-ment, sticking of the knives was avoidedand clean cuts were produced.…
Glass
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