Society of Glass Technology · [Sheffield] · leaf 599
Fig. 102. … 162. Gathering by Suction. Emile Roirant (U.S.A. Pat.,July 29th, 1919, No. 1311249. Filed November 14th, 1918, No.262591).—In gathering metalby suction, the introduction ofthe lower portion of the mould .into the metal has the effectof chilling the metal, so thatafter several successive gather-ings…
Glass
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