. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . g over this beingrare. The speaker said he had seen therecord of shocks run close up to 300,000lbs. Apart from the severe jerk shocksreaching up to and over 100,000 lbs., thereare a continuous succession of serges orimpulses transmitted through the draw-rigging of trains in service ranging lbs., interspersed with occasionalshocks above this and under lbs. Buffing shocks run from lbs. upto an unknown quantity. Dynamometerrecords show blows going over A few
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . g over this beingrare. The speaker said he had seen therecord of shocks run close up to 300,000lbs. Apart from the severe jerk shocksreaching up to and over 100,000 lbs., thereare a continuous succession of serges orimpulses transmitted through the draw-rigging of trains in service ranging lbs., interspersed with occasionalshocks above this and under lbs. Buffing shocks run from lbs. upto an unknown quantity. Dynamometerrecords show blows going over A few figures made by anyone asto the blow struck by a 50-ton car, evenat moderate speeds, will convince himthat the blow can never be fully loaded 50-ton car moving at 4 miles cr 20 cars moving at this speed. Theyall go beyond any reasonable chanbeing fully cushioned. Cars are, of course, not perfectly rigidwhen struck, but yield more or less asthey are coupled to others, and as thebrakes may be set or not and as the fram-ing may be more or less elastic thedraw gear cushion may thus become. OF THE FERRY SLIPS AT CAMDEN. practically effective. The force of theblow is often mitigated by the nature ofthe load, which may shift a little, and sohelp in reducing the punishment. Proba-bly the worst battering ram moved on arailroad is a full oil tank car, but per-haps a dead locomotive may be must give up all ideas of entirelycushioning the butting shocks. A well made steel coupler of reasonableweight will stand more than the M. C. of lfes. without frac- 232 RAILWAY AND LOCOMOTIVE ENGINEERING June, 1908. ture or diiti rtion. It will also standanything in the way of jerk shocks that isu uli while providing for, say 180,000The coupler head is not a> well de-signed to stand buffing shocks, especiallywh< 11 , as it is to stand pulling The horn was added to th( M C B coupler to prevent it beingdriven 111 between the draw timbers whenbuffing shocks
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
