Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . n a certain weight of glass, a, Fig. 2171, has been collected or gathered from the pots on the «idof the tube b, it is fashioned into a peculiar form, as shown in the figure, on a solid plate of cast-ironc, called a marver. Previous to the operation of marvering, the workman cools the iron pipe,which has become heated by being exposed in the melting-furnace. The marver c is placed on rollersfor the convenience of moving it from place to place as required. When the mass of glass has as-
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . n a certain weight of glass, a, Fig. 2171, has been collected or gathered from the pots on the «idof the tube b, it is fashioned into a peculiar form, as shown in the figure, on a solid plate of cast-ironc, called a marver. Previous to the operation of marvering, the workman cools the iron pipe,which has become heated by being exposed in the melting-furnace. The marver c is placed on rollersfor the convenience of moving it from place to place as required. When the mass of glass has as-sumed the proper form, a boy blows through the iron tube, while the workman continues to roll theball upon the marver. During the previous operation of marvering, the mass of glass is fashionedso as to give the outer extremity a conical form, the extreme end of which becomes the outer axis ofthe globe during the operation of blowing. This outer axis is called the bullion, and during the ex-panding of the globe the workman rollslhis bullion along a straight-edge. The piece of glass, after —<o.
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
