Society of Glass Technology · [Sheffield] · leaf 534
n discs may be movmted on the shaft andon the spindle; the intermediate wheel then stands vertically, andis moved towards and from the centre of the shaft by a yoke actu-ated by a screw, and the disc on the ^indle is pressed down by aspring, the drive being stopped when desired by lifting the disc… … FiG. 92. 156 JOrRNAL OF THE SOCIETY OF GLASS TECHNOLOGY. able-throw crank-piii in tlie disc y at the top oT tlie central siialt.Tlie frames may be turned nj) on tlie rods to allow of access to thetools. The outer ends of the arms are supported l)y vertical bladesprings, 8, or they may work through…
Glass
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