Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . and the pressure developed in the space G forces the waterout through the delivery pipe where it attains a force that is afactor of the height of the original fall. The air in the chamber G, is subject to the same conditions WATER SUPPLY 157 of loss as that of the pressure tank, and to be assured of a supply-to give pressure to the water, some air must be carried into thechamber with the water. For this purpose the valve F pro-vided. After the chamber is partially filled, there occ
Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances . and the pressure developed in the space G forces the waterout through the delivery pipe where it attains a force that is afactor of the height of the original fall. The air in the chamber G, is subject to the same conditions WATER SUPPLY 157 of loss as that of the pressure tank, and to be assured of a supply-to give pressure to the water, some air must be carried into thechamber with the water. For this purpose the valve F pro-vided. After the chamber is partially filled, there occurs a re-action in the flow of water at each closure of the valve, whichcauses a little air to be drawn in through the valve F with eachimpulse. This air bubbles up through the water and entersthe chamber where it assures an elastic cushion for closing thevalve E, The flow of water from the supply pipe is regulated at fl by anut on the stem of the impetus valve which permits its the valve slightly causes a less supply of water to bedelivered; opening the valve wider gives a greater Fig. —Sectional view of a double-acting hydraulic ram. The Double-acting Hydraulic Ram.—The diagram of Fig. 142illustrates the working principle of the double-acting hydraulicram mentioned above; where the water from a muddy stream isused to drive the ram and that from a separate source, as a springis delivered. The construction of the double-acting ram is similar to thesingle-acting ram, but a separate pipe aS discharges spring waterdirectly below the valve which acts just asthough it had enteredat the drive pipe. The ram in this case is receiving water fromthe drive pipe D, which operates the valve and furnishes powerfor elevating the spring water. The spring water enters theram through the pipe aS, to keep the space T filled, directly underthe valve. The water which enters the air chamber is, therefore,only that from the spring. A standpipe is arranged as shown
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkmcgrawhillb
