Van Nostrand's eclectic engineering magazine . acast-iron cylinder or float, D, that stands inthe reservoir, E, of slightly larger the side of the entrance-door of thebuilding is placed another cistern, G, ofcast iron, closed at top, and communicating 18 VAN NOSTRANDS ENGINEERING MAGAZINE. by a pipe, E E, with the vertical pipe, H,which is in connection with the outlet pipe,and passes up the slope of the embank-ment, to carry away any air that may ac-cumulate in the main. The cistern, G, isconnected with the reservoir, E, by a pipe,K, which supplies water to float the cyl-inder, D.
Van Nostrand's eclectic engineering magazine . acast-iron cylinder or float, D, that stands inthe reservoir, E, of slightly larger the side of the entrance-door of thebuilding is placed another cistern, G, ofcast iron, closed at top, and communicating 18 VAN NOSTRANDS ENGINEERING MAGAZINE. by a pipe, E E, with the vertical pipe, H,which is in connection with the outlet pipe,and passes up the slope of the embank-ment, to carry away any air that may ac-cumulate in the main. The cistern, G, isconnected with the reservoir, E, by a pipe,K, which supplies water to float the cyl-inder, D. Now, it is evident that the dis-charge from the reservoir will be regulated by the position of the lever, B, and thisHgain will be controlled by the height ofthe float, D. To regulate this height thesupply from the cistern, G, must be self-adjusting, or be regulated by the amountof water flowing away. The float, N, hasattached to it a spindle, on which are fixedtwo double-beat valves that work in thevertical part of the pipe, K, one of which. admits water from the cistern, G, into thecylinder, E, and the other allows the waterto escape from the reservoir, E. Now, ifthe surface of the water upon which thefloat, N, rests should rise above the properlevel, the float forces up the spindle, closingthe supply valve from the cistern, and atthe same time opening the lower the supply is cut off and the escapeopened, enabling the float, D, to fall. Thesubsidence of the float closes more or lessthe flap valve, and checks the discharge, inconsequence of which the surface of thewater tails, and with it the float, N, whichconsequently opens the supply valve, andagain admits water into the cistern, an almost perfect equality betweenthe consumption and the supply of water ispreserved. It would appear that the sameeflect could be produced by connecting thelever directly with a float on the surface ofthe water, but such an arrangement wouldonly apply when the pressure against
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Keywords: ., bookcentury1800, bookdecade1860, bookpubl, booksubjectengineering
