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1916-2016

Some Experiments on Glass for Lamp-working Purposes

Some Experiments on Glass for Lamp-working Purposes

T266-T274 (9 pages)

THE problem of discovering a really suitable glass for lamp-working purposes was one that was urged on us soon after the research work of this Department began in 1916. In March, 1919, a bulletin was issued from the Department to certain manufacturers interested in lamp-working glass, containing the results of analyses made by us of a number of foreign glasses of good repute. The amount of the tubing available in each case was so small as to provide little more than enough for chemical analyses, but certainly insufficient to make a test of the lamp-working properties. Accordingly, it became desirable to reproduce, as nearly as possible, samples by making meltings on a sufficiently large scale for the production of specimens which could be worked up in the lamp into a variety of articles so that a thorough test could be performed.

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