. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . HG. E. TRACK CIRCUIT BREAKERIn lower position. Circuit closed. gy sandwiches and hard-boiled eggs,are equally anxious to get home. In-digestion and cramp colic are quitecommon complaints now, and each mannow carries his own specific for his in-dividual ailment. The sandwiches andhard-boiled eggs are technically knownas sinkers and rocks. At the begin-ning of the tests, there were no surplussandwiches and eggs in the lunchbasket. Now, there are sinkers androcks to spare. Happily, there is anen
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . HG. E. TRACK CIRCUIT BREAKERIn lower position. Circuit closed. gy sandwiches and hard-boiled eggs,are equally anxious to get home. In-digestion and cramp colic are quitecommon complaints now, and each mannow carries his own specific for his in-dividual ailment. The sandwiches andhard-boiled eggs are technically knownas sinkers and rocks. At the begin-ning of the tests, there were no surplussandwiches and eggs in the lunchbasket. Now, there are sinkers androcks to spare. Happily, there is anend to this, also. Finally, the end of the tests ap-proaches and is welcomed by all, fromthe breaker boys up. The train crewis most vehement in its expression ofdislike of air-brake tests. It can nowget back to civilization and its families,and resume its more congenial engine and cars are stripped oftheirapecial apparatus, the track circuittaken up, and the cabin dismantled ofits mechanism. If the tests are com-petitive between rival brake companies,there will be victors and vanquished. FIG. C. THE CIRCIIT BREAKER IN THE TRACK CIRCUIT. In the upper closed position ready to be knocked down by the wiper. Ill the departing. The data collectedwill soon be tabulated and otherwiseprepared for general distribution, andthe railway and mechanical public willpossess another valuable addition toair-brake history. The investigator will learn the veryinteresting fact that just thirty years January, 1904. RAILWAY AND LOCOMOTIVE ENGINEERING 39 ago, tlie newspapers were licraldiiig theextraordinary achievement of the airbrake in bringing to a stop a passengertrain weighing three hundred thousandpounds, from a speed of fifty miles perhour in 1,950 feet. He will also learnthat in tests of the past year, a passen-ger train of 700,000 lbs. weight wasstopped from a speed of fifty miles perhour in a little over 600 ft.; that is,more than double the amount of des-tructive energy was arrest
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