Society of Glass Technology · [Sheffield] · leaf 530
nsion and the cylinder, 14. The extension is preferably builtof firebrick, and is held in place by upper and lower plates, 8, 9,and an end-plate, 10, wbich are held together by stay-bolts, 11, andsupported by suitable braces, 13. A renewable fireclay dish, 16,with a central aperture is fitted to… … Fig. 85. 210. Grinding and Polishing Glass. Pilkington Bros.and F. E. Slocombe (Brit. Pat. No. 120594, October 10th, 1917,No. 14682).—Apparatus for grinding or polishing plate glass com-prises two discs mounted on two horizontal shafts, which are outof line Init approximately parallel, one at least…
Glass
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