law: Factories Act, 1948 
  25. Self-acting machines 
  No traversing part of a self-acting machine in any factory and
  
  no material carried thereon shall, if the space over which it runs is a space
  
  over which any person is liable to pass, whether in the course of his
  
  employment or otherwise, be allowed to run on its outward or inward traverse
  
  within a distance of 46[forty-five centimeters] from any fixed
  
  structure which is not part of the machine:
  PROVIDED  that the Chief Inspector may permit the
  
  continued use of a machine installed before the commencement of this Act which
  
  does not comply with the requirements of this section on such conditions for
  
  ensuring safety as he may think fit to impose.