Society of Glass Technology · [Sheffield] · leaf 210
ering. The primary impeller or paddle (B) works in the viscous glassimmediately behind the spout and describes a path (indicated bydotted lines) which is approximately a parallelogram, with fourstrokes to the cycle, downward, forward, upward, backward. Atthe downward and forward stroke of each… … Fig. 7.—Diagram of Forehearth. In order that the quantity of glass urged over the dam may beregulated while the feeder is in operation, the paddle is providedwith three means of adjustment affecting the length of paddlestroke, depth the paddle dips into the glass, and the distance atwhich the…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
