OSCILLATING ENGINES.

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a certain space in excess of the outline of thecondenser itself; hut if a horizontal action ismaintained, the pumps and their appendagescan be located under the base of the condenserif required.

For the purpose of practical illustration,

Fig,

draws from the condenser the condensed orfresh water for the supply of the boilers, andthat the other pump draws from the condenserthe sea or condensing water which it dischargesoverboard. This illustration shows the planhalf in section half complete. The elevations

45 .

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ID

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MESSES. DAY AND CO’S OSCILLATING ENGINES AND SURFACE CONDENSERS.

the arrangement represented by Fig. 45 isinserted above, being a patented disposition ofdetail by Messrs. Day and Co., of Southampton,in 1863, especially referring to the employ-ment of the ordinary suction air pumps ofmarine engines, for the purpose of surfacecondensation, in such manner that one pump

are shown also complete and in section: theinternal portion relating to the pumps only.The plan represents the condensers beyondeach steam cylinder, near the sides of the hull,the pumps being centrally situated as for theinjection system. The steam, it will be seen,enters the cylinders through the inner trun-

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