Society of Glass Technology · [Sheffield] · leaf 602
m the disc, the spring, o1, is disconnectedfrom the frame, m, and the frame is lifted about its pivot, p2, torest on a stop, ps. The tools may both operate at the same time;or they may operate separately. According to the ProvisionalSpecification, the frame may be reciprocated radially of the… … Fig. 115. of glass blanks, L, on a spherically-surfaced runner, R, which isattached to the headstock of a lathe and rotated, the blanks beingbrought in succession beneath an oscillating tool, T; one curvatureof the lenses is determined by the distance of the centre of the 158 JOURNAL OF THE SOCIETY…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
