Society of Glass Technology · [Sheffield] · leaf 594
series ofrecesses, 21, to receive thebulbs, and is rotated bygearing so as to carry thempast a carborundum wheel,16, which forms a nick inthe neck. A spring-arm, 23, normally holds the bulb in therecess, but is raised by cams, 25 and 26, at the receiving anddelivering positions. A second…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
