QUIET "SHHICAGO..."

IN 1961 THE CHICAGO TRANSIT AUTHORITY (CTA) PURCHASED TWO SMALL RAIL GRINDERS TO REMOVE IRREGULARITIES (CORRUGATIONS) FROM STEEL RAILS SO AS TO REDUCE THE HIGH-FREQUENCY FLUTTERING NOISE THAT IS PRODUCED BY TRAINS PASSING OVER A CORRUGATED RAIL. THE GRINDERS WERE PUSHED OR PULLED IN TANDEM BY MOTORIZED WORK CARS, BUT BECAUSE OF THEIR SIZE AND LIGHT WEIGHT COULD BE OPERATED ONLY AT A RESTRICTED SPEED WHILE MAKING REPEATED PASSES OVER A SHORT STRETCH OF TRACK. THE OPERATION COULD BE PERFORMED DURING MIDNIGHT HOURS ONLY. A NEW RAIL SMOOTHER HAS NOW BEEN INSTALLED THAT CAN BE OPERATED BETWEEN REGULARLY SCHEDULED RUNS; ITS FIRST OPERATIONAL TEST WAS ON THE SKOKIE SWIFT LINE OF CTA. NO SPECIAL CREW IS REQUIRED.

  • Publication Date: 0

Media Info

  • Features: Photos;
  • Pagination: p. 24
  • Serial:
    • Metropolitan
    • Volume: 68
    • Issue Number: 4
    • Publisher: Bobit Publishing Company

Subject/Index Terms

Filing Info

  • Accession Number: 00242380
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 7 1973 12:00AM