Society of Glass Technology · [Sheffield] · leaf 649
ng frame is angularly adjustable, in order to grind the twosides of a V-shaped edge, about an axis which is always tangential 218 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. to the grinding-wheel. The lens-carrying frame, 28, is pivotallymounted on a spindle, 13, journalled in a frame, 7, which is… … Fig. 182. the projection, 9, and driven, through worm gearing and a belt,by the spindle, 4, of the grinding-wheel, 2. The lens, 38, is mountedbetween discs, 26, 27, carried by spindles, 24, 25, rotatably mountedin the frame, 28, and driven, at the same speed, through gearing,20 . . . 23, by the…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-415-184.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-877-400.webp)
