Odometers for Rail Application.

摘要

Available mileage counters were evaluated,anticipating the possibility of using mileage intervals,rather than elapsed time,for freight car inspection. Simple,reliable and reasonably low costing devices were required. Only two unpowered mileage counting odometers were uncovered,one built in the U.S.,the other in Switzerland. The Swiss device is not currently available in this country. The American built device was tested in eccentric rotation and for accuracy at both low and average freight car speeds. It was concluded that the American unit could serve satisfactorily in freight service,without modification,at what would appear to be acceptable cost levels.