Society of Glass Technology · [Sheffield] · leaf 594
veryApparatus. J. D. Roots,London (Brit. Pat., No.155922, October 3rd,1919).—In apparatus fordelivering uniform chargesof molten glass from atank furnace of the typein which a plunger is re-ciprocated above the dis-charge hole, the plunger,C, is of hollow cylindricalform. The air is initiallydrawn…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
