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Q. Will you give an example of a paddle oscillating engine? A. I will take as an example the oscillating engines constructed by Messrs. Ravenhill & Salked, for the Holyhead Packets. There are two cylinders in this vessel, and one air pump, which lies in an inclined position, and is worked by a crank in the shaft which stretches between the cylinders, and which is called the intermediate shaft.
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