STATIONARY ENGINES . 209 inch on the surface of the steam piston . These engines are worked at a fair duty , performing about 27,000,000 Ibs . lifted 1 foot high per minute , with a consumption of 1 cwt . of the small slack in the neighbourhood ; with Newcastle or Welsh small coal they would… … and it had to be discontinued ; Fig . 132 . — Plan of Pumps . lancewood , box , and beech have also been tried , but no wood answers so well as holly , which is now used for this dass of valve . The area of the suction valve is 325 square inches , being about two and a half times the area of the…
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