Society of Glass Technology · [Sheffield] · leaf 671
engagedby hooks, 24, on cables, 25, which are drawn upwards by a motorKf, ™ Ttor ls Sltua;ted in a cage, 13, which runs on overheadrails, lb. In use, a cylinder is drawn until a latch, 20, engages 188 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. a notch, 19, in the rod, 11. The cylinder is then… … Fig. 153. sides which are adjustable like the slats of a Venetian blind. Bythis means, the circulation of air along the cylinder can be regu-lated A protecting cover, 33, of refractory material, and fattedwith gas burners, 35, is arranged so that it can be swung over thepot when required. *** Dt…
Glass
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