Society of Glass Technology · [Sheffield] · leaf 706
Fig. 184. only as a mould cover until springs, 27, are compressed, when an MACHINERY FOR THE WORKING OF GLASS. 2l>3 … Fig. 185. is admitted to the parison mould. In use, metal is dropped intothe parison mould, and the handle, 26, drawn down to cover themoulds. Continued movementof the handle compresses thesprings, 27, and admits com-pressed air into the moulds, soas to force the metal into thering moulds. The…
Glass
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