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

Subject/Index Terms

Filing Info

  • Accession Number: 00050895
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 15 1982 12:00AM