Society of Glass Technology · [Sheffield] · leaf 553
ng device consisting oftwo light frames, 17 and 18, with lightcurved legs, 19 and 20, resting on a micadisc, 21. The light, curved legs give aflexible contact or yielding support to thetapered ends of the containers. The secondreceptacle, 7, is placed in position and sealedin at the neck, 4. A… … LAMP-WORKED AND GENERAL SCIENTIFIC APPARATUS 123 220. Large Vacuum Vessels. Isola Ges. fur Warme undKalte Isolierung, Berlin (German Pat., No. 310897, Class 32.Eng. Pat., No. 137541, January 9th, 1920. Inter. Con. October14th, 1915).—A process for the production of larger and corre-spondingly…
Glass
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