. Railway mechanical engineer . ost recent six-volt turbo generator forcab lighting is less than 50 lb. of steam per hour, and the costof installation is slightly in favor of the six-volt outfit. The portable trouble lamp was hung convenient to tlie cn-ginemans head and by it he read his train orders, imtil itbecame evident that the portable light was also convenientaround automobiles, of w-hich our enginemen seem to havemany. In fact, the practical results indicate that they foundthe trouble lamps more useful in the automobiles than in theengine, with the result that the trouble lamp is now b
. Railway mechanical engineer . ost recent six-volt turbo generator forcab lighting is less than 50 lb. of steam per hour, and the costof installation is slightly in favor of the six-volt outfit. The portable trouble lamp was hung convenient to tlie cn-ginemans head and by it he read his train orders, imtil itbecame evident that the portable light was also convenientaround automobiles, of w-hich our enginemen seem to havemany. In fact, the practical results indicate that they foundthe trouble lamps more useful in the automobiles than in theengine, with the result that the trouble lamp is now being re-placed with a fixed lamp over the enginemans head with aswitch convenient to his head. For the reason that these installations were somewhat rushed,owing to legal requirements, there was not sufficient time todevelop a suitable electric generator, and it was necessary touse a battery, with stationary charging stations at the locomo-tive turning points, where the locomotives leave their exhausted Strifch forPorfabk Lighf. Flush Sivfch Porfabfe lampDetailUnilet_ General Arrangement of Six-Volt Electric Headlight Installation, Southern Pacific the rear. Lamps for six-volt circuits, especially in the sizesused for headlight purposes (108 watts) have filaments verystrong and heavy, consequently they can be wound into an ex-ceedingly small cylinder not more than Yt, in. in diameter by ^in. long. This can be placed very accurately in the focus of thereflector, and the result is a concentrated beam of light of verygreat penetration, the beam candle-power measuring 1,046,000, while the mean spherical candle-power of the lamp it-self is only 140. On the other hand, if a wide beam of less poweris needed, as for example on crooked track in the mountains, anadjustment of the focus brings about this result. There is no batteries and take full batteries, just as they take their suppliesof sand, lubricant and water. American Steel to Great Britain.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
