. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. theexhaust steam enters at B and is liquefied by cont<ict ^rith the exteriorsurfaces of the tubes ; the injection water is adniitte() at the openi^ passes through the foot valves L L L and is driven through the de-livery valves S The wat«r of condensation parses through the delivery▼alvee N, 0, P. and is driven through the delivery valves I
. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. theexhaust steam enters at B and is liquefied by cont<ict ^rith the exteriorsurfaces of the tubes ; the injection water is adniitte() at the openi^ passes through the foot valves L L L and is driven through the de-livery valves S The wat«r of condensation parses through the delivery▼alvee N, 0, P. and is driven through the delivery valves I and MACHINISTS AND engineers DEPARTMENT. 373 Vie ontboard J, into a cistern from which the boilers are suppliedby the feed pumps with their water. The apertures D F, are theends of a pipe conn&jting the fresh and salt water cisterns, so thatany shortajje in the feed water may be furnished from tlie lattercistern. H represents tlie end of a pipe thio gh which the auxiliarypump draws water, and A is an air chamber for the salt watercistern. The jet condenser is the lightest, simplest and cheapest ofthe two. only it has the fault of supplying salt water to the boilei-a, aatliecondn:fd steam and the sea water jet intermingle; on the con-. taary the surface roiidemer preserves the water of condensation Mthat It may be used m the boilers many times in succession, and in4^ W\y !^P*2. ** freshness, disppnsing with the necessity of tK?fi fT,\^ 1, ^ P^^ *^® ^•^^e- of salt deposits onthe plates of the boilers. Care should be used to keep the st^m andexhaust valves-steam ti-ht in order to prevent the leakage of steaminto the condenser while the engine is at rest, thereby heating thelormer to such an extent that the injection water cannot find admit-vince owing to the pressure. In such cases the trouble may be recti-fied by anplymg cold water to the exterior of the condenser, or bvKartmg the engine and moving it a few strokes. TTie piston of the marine engine possesses tlie usual form
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
