Archibald C. Ketchum, of New York City, has invented a new railroad car wheel, by which all parts of the wheel, which are sub-jected to friction upon their becoming worn, can be takei out and ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

“Preliminary findings show one set of train wheels (one truck) lost contact with the rail. Rail Operations is currently working to re-rail the car and move it to the rail yard,” MARTA ...