law: Factories Act, 1948 
  29. Lifting machines, chains, ropes and
  
  lifting tackles 
  
  (1) In any factory the following provisions shall be complied
  
  with in respect of every lifting machine (other than a hoist and lift) and
  
  every chain, rope and lifting tackle for the purpose of raising or lowering
  
  persons, goods or materials:
  (a) all parts, including the working gear,
  
  whether fixed or movable, of every lifting machine and every chain, rope or
  
  lifting tackle shall be- 
  ( i ) of good
  
  construction, sound material and adequate strength and free from defects;
  (ii) properly
  
  maintained; and
  (iii) thoroughly examined by a competent
  
  person at least once in every period of twelve months, or at such intervals as
  
  the Chief Inspector may specify in writing; and a register shall be kept
  
  containing the prescribed particulars of every such examination;
  (b) no lifting machine and no chain, rope or
  
  lifting tackle shall, except for the purpose of test, be loaded beyond the safe
  
  working load which shall be plainly marked thereon together with an
  
  identification mark and duly entered in the prescribed register; and where this
  
  is not practicable, a table showing the safe working loads of every kind and size
  
  of lifting machine or, chain, rope or lifting tackle in use shall be displayed
  
  in prominent positions on the premises;
  (c) while any person is employed or working on
  
  or near the wheel track of a traveling crane in any place where he would be
  
  liable to be struck by the crane, effective measures shall be taken to ensure
  
  that the crane does not approach within 49[six meters] of that
  
  place.
  (2) The State Government may make rules in respect of any
  
  lifting machine or any chain, rope or lifting tackle used in factories- 
  (a) prescribing further requirements to be
  
  complied with in addition to those set out in this section;
  (b) providing for exemption from compliance
  
  with all or any of the requirements of this section, where in its opinion, such
  
  compliance is unnecessary or impracticable.
  (3) For the purposes of this section a lifting machine or a
  
  chain, rope or lifting tackle shall be deemed to have been thoroughly examined
  
  if a visual examination supplemented, if necessary, by other means and by the
  
  dismantling of parts of the gear, has been carried out as carefully as the
  
  conditions permit in order to arrive at a reliable conclusion as to the safety
  
  of the parts examined.
   Explanation :  In this sections,
  (a) "lifting machine" means a crane, crab, winch,  teagle , pulley block, gin wheel, transporter or runway;
   50  [(b) "lifting tackle" means any chain, sling,
  
  rope sling, hook, shackle, swivel, coupling, socket, clamp, tray or similar
  
  appliance, whether fixed or movable, used in connection with the raising or lowering
  
  of persons, or loads by use of lifting machines.]