Society of Glass Technology · [Sheffield] · leaf 718
MACHINERY FOR THE WORKING OF GLASS. 235 … Fig. 199. at the outer ends of the chuck barrels, 27, 37. By this means,a tube of glass mounted in the two chucks receives a posi-tive rotation, and is not subjected to any torsional strain.The two chucks are opened together by means of the two chains,53, attached to the two bell crank levers, 52.…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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