BUS VOOR HET VORMEN VAN GLASVEZELS.

摘要

N-1-17865M/77 The orifice plate in the bottom of a bushing is uniformly inwardly curved in a concave manner, whereby its resistance to outward deformation or sagging under the weight of molten glass in the bushing and the tension of glass filaments withdrawn therethrough is greatly increased. The plate may be rectangular or circular, i.e. arch-shaped or domed, and may be further strengthened by reinforcing bars secured to the interior side walls of the bushing and to the crown portion of the plate.