The processes involving the working of viscous hot glass-the only topic of this book-are basically different from those customary in other technologies. The strong temperature dependence of the working properties of glass, particulary of its viscosity, require the exact .co ordination of cooling and forming. For this reason the temperature conditions in the forming parts of the machine and the timing of the process are of prime importance. This particularity of glass as a material as well as the diversity in type and quality of glass products explain the specificity of glass machines in the...