Society of Glass Technology · [Sheffield] · leaf 731
394. An Automatic Feeding Device. C. H. Rankin, Wells-burg, West Virginia, U.S.A. (Brit. Pat., No. 198952, September 28th,1922).—In a device for feeding molten glass towards and througha discharge orifice, the flow of glass is effected and controlled by arotary archimedean screw dipping into or… … Fig. 173. An archimedean screw, d, extends into the cup, b, and by its rotation assists or retards the extrusion of themetal through the bush, c. The screwis supported in bearings, /, carried bya bracket, g, which can be movedto raise or lower the screw to regu-late the discharge. An…
Glass
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