Society of Glass Technology · [Sheffield] · leaf 471
Accordingto the invention, the charge during extrusion is surrounded bya tubular member or bo$ to prevent chilling, the box being mov-able downwards to permit shears to operate close to the orifice.The apparatus is operated by pneumatic power, the timingof the various movements being controlled by… … Fig. 31. MACHINERY FOR THE WORKING OP GLASS. 41
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
