Society of Glass Technology · [Sheffield] · leaf 745
eam, andhence its cross-section, can beregulated by the burners, 5. H. G. C. 367. Machine for Fire polishing Tumblers and otherGlass Articles. H. H. Pitt (U.S.A. Pat., June 24th, 1919,No. 1307453. Filed August 7th, 1917, No. 184954).—A machinefor fire-polishing tumblers constructed according to… … Fig. 240.
Glass
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