Society of Glass Technology · [Sheffield] · leaf 564
ever 31.In operation, the tables, etc., are rotated slowly or intermitting]y,and stop, or slow down, when an article comes opposite the take-out aperture. Each article is carried round once by the tables,rotating meanwhile with its platform and being operated on bythe jets as these are raised and… … 861 & Fig. 12G. edges of elliptical lenses comprises means by which the lens isrotated in contact with a grindstone at such a varying angularvelocity that all parts of its peripheryshall be completed at practically the sametime. A grindstone, 10, supplied withwater from a reservoir, 5, is…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
