GLASS-MAKING BY ELECTRICITY.

Evening Star, Issue 11168, 17 February 1900, Page 3

GLASS-MAKING BY ELECTRICITY.

A French technical journal (says ■ Chambers s Journal ’) gives a description of an ??&,.• tnc furnace used by Kroll. of Colorin' in the manufacture of glass. Like oliar electric furnaces, tho beat is produced coffin the crucible by the arc generated JKv-een carbon electrodes. Many arc the iUßuilages claimed for the now process .over tm old. First, an economy of 60 per cenUTm fuel, ami the absence of any risk of oJn or cinders spoiling tie product; next, the required being kept; within tho containing vessel,'it is'So localised: that the workmeai are enabled to approachthe mass of molten glass Without danger of .- injury from the heat. It is soid, alBo ( that, a mass of “metal” requiring thirty licurtC, to melt it in.jtbe ordinary glass, furnace can,by employing electricity, be reduced-to! Uie\, plastic state in fifteen'minutes. .{Bmairpola or crucibles made of carbon, containing' oa«!h : • from 401b to 50tb of raw material, are found to be most convenient in working.. -.'Another . noteworthy advantage cornice ted withthe electric furnace is that work can be stopped or resumed very quickly, and without that loss which must attend the firing and) bankin.g-up of an ordinary furnace. . This means that wort, on Sundays or at night can be dispensed witit.