Mobile installation for cleaning ballast and subsequently tamping a corrected track

Abstract From the Canadian patent

A mobile installation for cleaning the ballast supporting a track and subsequently leveling the track and tamping ballast under the ties of the leveled track comprises a ballast cleaning machine movable in an operating direction along the track and a track leveling, lining and tamping machine following the ballast cleaning machine in the operating direction, the track leveling, lining and tamping machine. The latter machine comprises a self-propelled machine frame two, undercarriages supporting the frame for movement in the operating direction along the track, the undercarriages being sufficiently spaced apart in this direction to permit lifting and lateral movement of the track …