Society of Glass Technology · [Sheffield] · leaf 644
ndricalbody portion and a top, 20,which is flat on its underside and rounded on its upper side. Thetop is pierced with a central aperture, 21, of a diameter less thanthat of the cylinder to be drawn. Lugs, 24, assist in centring thefloater relatively to the shield. In use, the floater is drawn… … Fig. 174. 368. An Improved Glass-drawing Ring. J. Durieux,New Eagle, Pa. (U.S.A. Pat.,No. 1367027, February 1st, 1921.Filed July 15th, 1919, No. 310961).—In order to exclude stones andother foreign substances from thearea of metal from which drawingtakes place, a floating ring is madewith inner and…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
