Society of Glass Technology · [Sheffield] · leaf 557
thecondensed liquid to flow back intothe flask without the latter beingcaught in a column and held in thetube by the escaping steam. Thetwo small holes in the stem of the Twithin the bulb allow condensedwater to return to the flask as fastas formed. The arms of the T pre-vent any bubbles of liquid… … 104. 236. Blowpipe Burners. J. Keith and G. Keith (Brit.Pat. No. 117101, May 29th, 1917, No. 7661).—In a method ofproducing a high-temperature flame, more particularly for glassworking, the combustible mixture is preheated whilst flowingthrough a straight passage with asmooth surface and of such…
Glass
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