| 摘要 |
Improvements in the object of Patent No. 8602377, for: "Procedure for the manufacture of mouth moulds for the manufacture of hollow glass containers". The procedure with the improvements of the present addition certificate consists in melting a half bushing 5 of an alloy which contains Cr and/or Ni; in placing said half bushing 5 inside a core box 6 which forms one half of the mouth mould 7 of the container, with the bushing occupying the axially outermost and radially internal zone of said mould 7; in casting a molten bronze alloy in the core box, with the half bushing being joined to the rest of the mould 7 when the molten bronze alloy solidifies, forming a single piece; and in machining the half bushing 5 to the desired dimensions. The use of a bronze instead of iron alloy allows the production rate and also the life of the mould to be increased. <IMAGE>
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