. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . s fromthe signal lamp and terminate in tworeflectors placed at an angle of 45° tothe direction of the rays from thelamp, and thus light is again reflectedparallel to the track, at a considerabledistance from the illuminating of these reflectors shows lightup and the other down the the semaphore arm is horizontal,an auxiliary spectacle carrying a green 114 RAILWAY AND LOCOMOTIVE ENGINEERING March, 1904. glass is interposed in front of the glassof the reflecting tube, and o
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . s fromthe signal lamp and terminate in tworeflectors placed at an angle of 45° tothe direction of the rays from thelamp, and thus light is again reflectedparallel to the track, at a considerabledistance from the illuminating of these reflectors shows lightup and the other down the the semaphore arm is horizontal,an auxiliary spectacle carrying a green 114 RAILWAY AND LOCOMOTIVE ENGINEERING March, 1904. glass is interposed in front of the glassof the reflecting tube, and on lookingback, after having passed the signal,the enginemen see a small green lightto the left of the larger signal light,and they are therefore made aware ofthe fact that the order board is stillagainst them or is not, as the case maybe. If the signal assumes the pro-ceed position, the spialler auxiliarylight of the back sight becomeswhite. Neither of the back sight lightsare shown through a lens. They aresmaller and are not intended to be seenas far away as the train order signallights, Jiailuai, 4 Li>CQm TRAIN ORDER SIGNAL WITH LAMPS IN-CASED IN METAL POST. On approaching one of these signalsthe enginemen see a bright red light forthe night stop signal, or a large, stronggreen light for the proceed sig-nal. They are also able to see theback sight signal which governs themovements of trains in the opposite di-rection. The advantage claimed forthis device is that as the day indica-tions are visible to the enginemen whohave passed the signal, so the nightsignals will also be visible in the sameway and that the men on the enginewill be able by actual sight to checkthe report of the conductor as to thecondition of the signal at night, when he goes forward to the engine with hisorders. The back sight, proceedcolor being white, and its stop indi-cation being green, it is obvious that ared light will never be presented ineither direction where it may be ig-nored. This i
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