Society of Glass Technology · [Sheffield] · leaf 746
nto a cistern, C, containingthe abrading mixture, and thendeposits this on the wheel ortable. The rod, N, is recipro-cated by means of a crank pinon a disk, L, which is rotatedthrough worm gearing, 7, by ashaft, D; the shaft, D, alsocarries a stirrer, F, which keepsthe abrading material wellmixed.… … Fig. 242. 264 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. 369. Bevelling Lenses, etc. H. J. Birchall, Erdington(Brit. Pat. No. 135354. January 2nd, 1919, No. 30).—In agrinding machine for double bevelling the edges of eyeglass lenses,etc., in which two grinding-wheels are employed, one for…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
