Society of Glass Technology · [Sheffield] · leaf 659
substantially regular.The material, 3, which may beglass or qviartz, is liquefied in acrucible, 2, and a tube of suit-able material is dipped into theliquid and drawn upwardsthrovigh a heat-resisting die, 5,a blower, 11, supplying air tothe central tube in order tomaintain the diameter… … Fig. 173. MACHINERY IOR THE WORKING OF GLASS. 281 coating of tungsten may also be applied to the lower side of thedie, 5. G. D. 361. Paste Mould Machine. F. W. Stewart (U.S.A. Pat.No. 1294319, February llth, 1919. Filed October 27th, 1915.No. 58218).—Relates to a pastemould machine, that is, a…
Glass
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