. A manual of practical hygiene. s heavy enough to open the valve, while a small leak in the bottomallows the valve to raise it again after the tank is empty. All of these contrivances are subject to failure from wear of movingparts except Fields siphon, which it is hoped may be perfected stillfurther. Fig. 110 shows the two tanks and the Field siphon as modifiedby the writer, the changes being at least a partial remedy for the imper-fections complained of. If the siphon were to be applied as the outlet of the same tank whichreceives the sewage for maceration, etc., it would often become choke
. A manual of practical hygiene. s heavy enough to open the valve, while a small leak in the bottomallows the valve to raise it again after the tank is empty. All of these contrivances are subject to failure from wear of movingparts except Fields siphon, which it is hoped may be perfected stillfurther. Fig. 110 shows the two tanks and the Field siphon as modifiedby the writer, the changes being at least a partial remedy for the imper-fections complained of. If the siphon were to be applied as the outlet of the same tank whichreceives the sewage for maceration, etc., it would often become choked bysolid matter. It is therefore best to provide a second tank between thisand the siphon. The first is called the settling basin and the latter theflush tank on Fig. 110, for the last is alternately filled and emptied,while the first remains always full. Siphons are often constructed inside of the flush tank, but it is betterto make them accessible at all times by placing them outside, as hereshown. EEMOVAL OF HOUSE-WASTE. 487. Fig. 111.—A, Section across BranchSection lengthwise of Branch. B, A two-inch siphon is as large as can be surely set in action by thedrainage of a single house. The surest method of starting such a siphon would undoubtedly be toprovide a copper float in the tank with an ordinary brass cock, such as is used on water-supply pipesfor the automatic tilling ofhouse tanks; but the floatmust be adjusted so thatthe cock should be openedinstead of closed, when thesewage rises to the over-flow line of the this cock with purewater under pressure fromsome outside source by asmall pipe, and let the dis-charge be delivered by atight connection throughthe arch of the siphon, insuch a way that it wouldfall free of the sides of thetube into the cup or basinwhere the siphon is madeto discharge. A very smallstream of water, thus ap-plied, would start the siphon with certainty, and with scarcea moments delay, if its discharging end is so placed as tobe se
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Keywords: ., bookcentury1800, bookdecade1880, booksubjecthygiene, bookyear1883
