Society of Glass Technology · [Sheffield] · leaf 560
volution. The fire-polishingis effected by gas burners ar-ranged in a semicircular casing, 68,with a projecting hood, 73, fined 53with fireclay or other refractorymaterial. The burners are ar-ranged to heat the fireclay and alsothe sides of the ware. The heightof the frame, 52, is adjustableby… … 160 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. to move vertically in a fixed sleeve, 37, and is raised or loweredby rotating the screw, 16, by means of a handle, 24, and actuating-gear, 26. An electric motor, 40, actuates the spindle, 43, throughgearing, 38, 39, and a pinion, 50, on the spindle…
Glass
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