ven on a straight line. There are two kinds of slipping to which carwheels may be subjected. One is the skiddingaction due to the locking of the wheels by the brake-shoes. The other form occurs when the drivingwheels of electric motor cars, for instance, are turnedfaster than the corresponding rate… … ARRANGEMENT OF APPARATUS TO TEST THE FRICTIONAL RESISTANCE OFCAR WHEELS TO SKIDDING. The apparatus was designed to produce, as nearlyas possible, the actual conditions of track work. Two pieces of steel rails of 75 lbs. section, one ofwhich had been worn smooth in service, the other apiece of new…
Railroad cars
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