. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DESIGN OF ILLINOIS CENTRAL BOX CAREND POST. ing through the nozzles that they wouldbecome gummed in four or five hun-dred miles running. Cleaning wouldnot be done till choking of the exhaustwas too evident to be overlooked;meanwhile the sharp exhaust had beenfor many miles tearing the fire andwasting coal. Remonstrances would be made byroundhouse foremen a,nd master me-chanics, but nothing would cure thegrease waste but a strictly enforced re-duction of the supply. January, 1908. RAILWAY AND
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DESIGN OF ILLINOIS CENTRAL BOX CAREND POST. ing through the nozzles that they wouldbecome gummed in four or five hun-dred miles running. Cleaning wouldnot be done till choking of the exhaustwas too evident to be overlooked;meanwhile the sharp exhaust had beenfor many miles tearing the fire andwasting coal. Remonstrances would be made byroundhouse foremen a,nd master me-chanics, but nothing would cure thegrease waste but a strictly enforced re-duction of the supply. January, 1908. RAILWAY AND LOCOMOTIVE ENGINEERING 21 Correspondence School The Automatic W. !• K01 u 1 cpntroller described in the De-cember issue was of the hand or man-ually operated type, that is, the motor-man governed the rate of applicationof the electric power to the» could advance the controller han-dle to the various notches as quicklyor as slowly as lie desired, provided the. THE AUTOMATIC CONTROL. circuit breaker did not open or thefuse blow out. The automatic type ofcontroller, however, supplies the powerto the motors in successive steps inthe same manner as the hand controldoes, but in the automatic type thetime allowed for each step or the rateof application of power is governed,•not by the motorman, but by a deviceknown as the limit switch. This de-vice gives a uniform rate of accelera-tion and prevents the application ofpower in excess of a predeterminedrate. In order to produce a uniform rateof increase in speed, or in other words,to secure a uniform rate of accelera-tion, the electric power must be appliedgradually step by step to the steps must be taken at such reg-ular intervals of time as will give thebest rate of acceleration. By this wemean a rate of acceleration which willbe economical of both current andequipment and at the same time meetthe needs of the train schedule and af-ford comfort to the passengers. Xotwo motormen can
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
