Society of Glass Technology · [Sheffield] · leaf 610
sh Thomson-Houston Co., Ltd., London, and the General Electric Co.,Schenectady, New York, U.S.A. (Brit. Pat., No. 193581, December19th, 1921).—In the manufacture of glass receptacles such as X-raybulbs having windows differing in thickness, composition, or otherrespects from the main receptacle,… … then fused. The parts arc previously fitted by grinding, etc. Theapparatus comprises a rotatableoven, 5, fitted with a removablecover, 8. The receptacle, shownas an X-ray bulb, which is madeof lead glass, previously heatedat about 450°, is placed in theoven, the arms, 10, 11, beinglocked by spring…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
