. Railway mechanical engineer . ear has been inserted, all thereactions being transmitted through it to the dynamometer. Thewhole draft rigging is carried on ball bearings in order to pre-vent undue friction. If the dynamometer is not in service,the draft rigging is locked by means of a heavy pin, connectingit directly with the car underframe. SPEED INDICATORS The Amsler tachometer, already in use on some of the Euro-pean dynamometer cars, has been brought to such perfectionthat it indicates the speed almost instantaneously as a functionof the distance covered, differing in fractions of a seco
. Railway mechanical engineer . ear has been inserted, all thereactions being transmitted through it to the dynamometer. Thewhole draft rigging is carried on ball bearings in order to pre-vent undue friction. If the dynamometer is not in service,the draft rigging is locked by means of a heavy pin, connectingit directly with the car underframe. SPEED INDICATORS The Amsler tachometer, already in use on some of the Euro-pean dynamometer cars, has been brought to such perfectionthat it indicates the speed almost instantaneously as a functionof the distance covered, differing in fractions of a second only. current electric motor, while the other has a speed proportionalto that of the train. The angle between the axis of the discrotating at constant speed and the axis of rotation of thesphere thus varies with changes in the speed of the train, thetangent of this angle being proportional to the speed of thetrain. Two small rollers held in a frame receive their move-ment from the sphere. They are so located that they always. Ttie Dynamometer, Stiowing the Intercepting Valve and One of theCheck Valves of the Equalizing Device have their path along its equatorial line, following it with changesin the position of its axis of rotation. Suitable gearing transmitsthe movement of this frame to a dial, permitting the readingof the speed in kilometers per hour, while a recording penmarks a curve on the paper. Another speed recorder is installed on the measuring table forthe purpose of indicating the speed as a function of the special diagram strip for this purpose moves during stops. 610 R.\IL\VAY AGE GAZETTE, MECHANICAL EDITION Vol. 89, No. 12 registering the minutes and seconds thus consumed. The rec-ords on this paper are not traced but punctured and registrationis made every three seconds giving the average speed of thetwo preceding seconds. This speed recorder works satisfactorilyand was years ago adopted as standard equipment for all theroad engines of the Swiss Feder
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
