Society of Glass Technology · [Sheffield] · leaf 660
ticle is turned in the mould whilebeing blown. The turning of thehandle, 41, also admits air to acylinder, 49, and raises a spray pipe,64, within the second mould, as shown. As the spray pipe reaches its position, a valve trigger,61, engages a fixed stop and admits water, which is si)rayed overthe… … M^iyiBlS Fifi. 174. 362. Grinding and Polishing Lenses. W. J. Druifp andAnglo-American Optical Co. (Brit. Pat. No. 123270, July30th, 1918, No. 12423).—Apparatus for grinding and polishinglensee comprises a table or support, 11 (Fig. 175), for fhe lenses. 282 JOURNAL OP THE SOCIETY OP GLASS…
Glass
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