Mechanical Contracting & Plumbing January-December 1908 . The \yater heaterhas an electric switch attachment thatturns on both the electric current andthe flow of water at the same time. Theone constructed for the bath is connect-ed to a switch conveniently located andthe flow of water regulated by the ordinary faucet. CIRCULATION OF COOLED DRINK-ING WATER. The supply of ice cold drinking waterto every guest room in the New South-ern Hotel of Chicago will be done econ-omically by means of continuous circula-tion and iced water through supplypipes. The water is filtered and cooled,tlien circula
Mechanical Contracting & Plumbing January-December 1908 . The \yater heaterhas an electric switch attachment thatturns on both the electric current andthe flow of water at the same time. Theone constructed for the bath is connect-ed to a switch conveniently located andthe flow of water regulated by the ordinary faucet. CIRCULATION OF COOLED DRINK-ING WATER. The supply of ice cold drinking waterto every guest room in the New South-ern Hotel of Chicago will be done econ-omically by means of continuous circula-tion and iced water through supplypipes. The water is filtered and cooled,tlien circulated by means of rotarypump. The supply pips runs directlyback of the faucets, so that in drawingthe water, not a thimbleful is wastedbefore the coldest water is force needed is not great, becausethe i-eturn flow is by gravity. PLUMBER AND STEAMFITTER October 1, 1908 Casting Pipe in Permanent Molds It has long been the dream of everytoundryman whose trade requires alarge number of duplicate castings tomake these eastings in molds that would. Setting Core. eally opposite points, are arranged twohydraulic cylinders, whinh slide in wayssimilar to a planing taSle, tne pistonswithin the cylinder being held station-ary and the cylinder being moved backand forth by the operation of a four-way valve controlling the admission ofwater alternately to each end of thecylinders. The stroke of the cylindersis of such length as to be slightly morethan the spacing of the molds carried on the table. Projecting from the topof the cylinders is an inclined plane sur-face designed to lift the pins in thetrucks when the cylinders move in a cycle of the cylinders intermittentlymoves the table ahead a distance equal tothe spacing of the molds. The tablemakes one complete revolution every 71/2minutes, producing 30 pipes in thattime or 240 pipes an hour.
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