Society of Glass Technology · [Sheffield] · leaf 643
heets and particularlyto processes in which thetendency of the sheet tobecome narrower is over-come by having pockets ofcooler metal from whichthe edges of the sheet aredrawn. The inventor over-comes the narrowing ten-dency by forming depres-sions, 8, in this cooler metalFig. 173. on both sides of… … 366. Device for Severing Glass. H. F. Hitner, Wilkinsburg,Pa., Assignor to The Pittsburgh Plate Glass Co. (U.S.A. Pat.,No. 1373728, April 5th, 1921. Filed February 5th, 1920,No. 356396).—This invention relates to devices for severing orcracking glass by the application of heat along the desired…
Glass
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