. Locomotive engineering : a practical journal of railway motive power and rolling stock . Inclined Bars or The Air Valvk. Massachussetts ; and the Black system, onthe Metropolitan Elevated roads in NewYork City. The Rowell-Potter system wasapplied to the Intramural Railway at theWorlds Fair, but was not a strictly niechan- the length of a block ; as it is now, severaltrains may be run between two stations,but no train can pass the signal and not bestopped, so long as a train is in the stationblock. The Rowell-Potter system makes anotable departure from the ordinary signalsystems, in
. Locomotive engineering : a practical journal of railway motive power and rolling stock . Inclined Bars or The Air Valvk. Massachussetts ; and the Black system, onthe Metropolitan Elevated roads in NewYork City. The Rowell-Potter system wasapplied to the Intramural Railway at theWorlds Fair, but was not a strictly niechan- the length of a block ; as it is now, severaltrains may be run between two stations,but no train can pass the signal and not bestopped, so long as a train is in the stationblock. The Rowell-Potter system makes anotable departure from the ordinary signalsystems, in that provision is made for stop-ping a train independenth- of the engineer,should he be negligent, or, from physicalcauses, be unable to obey the signal. Thesystem is not only automatic, but obedienceto the signal is made compulsory, and allchance of a mistake being made is elimi-nated. The principal parts of the system are :the inclined bars or trips, the safety stopand air valve for applying the air if a dan-ger signal is disregarded, and a latchingdevice for holding up a weight and allow-ing the signal to be
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
