. Railway master mechanic . ,an inch and a half or two inchesthick, is wound, and secured byan outer layer of cloth,around which several turns of stringare tightly wound. The empty pailis made to weigh some exact numberof pounds by placing one or two nutsor other bits of iron in it. Tenpounds of water are next weighed into it, and theweight on the steelyards is then pushed along onepound. Steam is then blown into the pail until thesteelyards once more balance. In this way we know,with considerable precision, just when one pound ofsteam has been added to the water. The tempera-ture of the water
. Railway master mechanic . ,an inch and a half or two inchesthick, is wound, and secured byan outer layer of cloth,around which several turns of stringare tightly wound. The empty pailis made to weigh some exact numberof pounds by placing one or two nutsor other bits of iron in it. Tenpounds of water are next weighed into it, and theweight on the steelyards is then pushed along onepound. Steam is then blown into the pail until thesteelyards once more balance. In this way we know,with considerable precision, just when one pound ofsteam has been added to the water. The tempera-ture of the water in the pail is taken both im-mediately before and immediately after the steamhas been passed into it, care being taker, especiallyin measuring the higher temperature, to stir thewater well with the thermometer, and to leave thethermometer in it long enough for the quicksilverto reach the same temperature as the water in whichit is plunged. The rise in temperature so obtainedgives us a means of determining the percentage of. BGILEB FOR THE EBIE TEN WH££L£E8. Our readers will be interested in the descriptionand illustration which we are enabled to give of theboiler of the excellent ten-wheelers recently built bythe Baldwin Locomotive Works for the New York,Lake Erie & Western Railway. The boiler constitutes one of the especial features ofthese engines. The great length of the fire-box in pro-portion to the barrel is particularly noticeable. As ex-perience indicates that fire-box heating surface isconsiderably more efficient than that in the tubes,we regard this as a good feature and attribute to itthe free steaming for which these engines have es-tablished a reputation. The depth of the leg is opento criticism; the 15t in. might advantageously havebeen increased, more especially as hard coal is burnedand no brick arch is used. The arrangement of theplates forming the fire-box shell is one which is be-ing much used at present, and forms a simple andworkmanlike method of constr
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
