也就在1712年，一个叫做纽可门的五金商人鼓捣出了实实在在、安全好用，而且非常皮实耐用的蒸汽机，那也就是大名鼎鼎的纽可门蒸汽机。纽可门本业经营的是各种金属工具，矿山可是他的大主顾，他经常上矿山去实地考察，看看他们需要什么样工具。所以他对矿山的需求非常了解。用马的畜力来提水，太贵了，不合算。纽可门蒸汽机的特点是结合了帕平的活塞和萨维利的气缸。纽可门蒸汽机的特点是结实耐用，很多纽可门机到现在还能使用呢，这都已经300年过去了。而且对加工要求并不太高。蒸汽压力也不太大，因此非常安全。那么这个纽可门是怎么做到的呢？其实也不难，纽可门机的外形基本上就是一个大号的烧瓶。肚子是个圆球，里面装了大量的水，上面是直溜溜的脖子，其实就是气缸，里面有个活塞。管道阀门那是少不了的啦。蒸汽进入上边的气缸，活塞被顶出去了，然后下边的蒸汽阀门关闭，往气缸里喷冷水，蒸汽冷却下来，压力降低乃至变成负压，把活塞吸回来。这时候，阀门打开再次吹进蒸汽。一直循环往复下去。活塞带动杠杆，杠杆带动抽水装置。蒸汽机只负责输出动力。不负责具体干什么，提水也行，舂米也行，打铁也行……
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