Society of Glass Technology · [Sheffield] · leaf 475
lishis preserved. G. D. 79. Drawing- Glass Cylinders. H. K. Hitchcock, Pitts-burgh, Pa., assignor to the Pittsburgh Plate Glass Co. (U.S.A.Pat., No. 1398019, November 22nd, 1921. Filed December 28th,1918, No. 268715).—A cold bait, for drawing glass cylinders without 71 JOURNAL OF THE SOCIETY OF… … member 3 and adapted to engage the flange of glass when it islowered, and means by which the second member is lowered auto-matically when the bait is dipped into the metal and raised offthe flange when the bait is lifted. G. D. 80. Drawing- Sheet Glass. T. S. Owens, Toledo, 0. (U.S.A.Pat,, No.…
Glass
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