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In this Act, unless the context otherwise requires,— Defini- (a) "contract load" means the load specified in the tions. maker's specification of a lift or an escalator as being the maximum load which the lift or the escalator is capable of carrying; (b) "contract speed" means the speed specified in the maker's specification of a lift or an escalator as being the maximum speed which the lift or the escalator is capable of attaining in the up direction with contract load; (c) "counterweight" means the weight or series of weights to counterbalance the weight of a lift car and part of the load; (d) "escalator" means a moving inclined continuous stairway or runway used for raising and lower- ing passengers, which is worked by power; (e) "lift" means a hoisting and lowering mechanism equipped with a lift car which is designed to move in guides in a substantially vertical direction and is worked by power; (f) "lift car" includes the platform, car frame and the enclosure of a lift car; (g) "lift installation" used in relation to a lift includes the lift (that is to say the mechanism and the lift car), the lift well, the lift well enclosure and all ropes, cables, wires and plant directly con- nected with the operation of the lift; The West Bengal Lifts and Escalators Act, 1955. [West Ben. Act (Section 3.) (14 "lift well" means the unobstructed space provided for the movement of a lift car and any counter- weight and includes the pit and the space for top clearance for the lift car and the counterweight; (i) "lift well enclosure" includes any permanent substantial structure which separates a lift well either wholly or in part from its surroundings; (5) "pit" means the space in a lift well below the level of the lowest lift landing; (k) "pit depth" means the vertical distance between the level of the lowest lift landing and the bottom of pit; (1) "power" means energy generated by electricity, water, oil, gas, steam or any combination of them; (m) "prescribed" means prescribed by rules made under this Act; (n) "suspension ropes" means the ropes by which a lift car and counterweight are suspended; (o) "top clearance" means— (i) for a lift car,— the distance which the lift car floor can travel above the level of the highest lift landing without any part of the lift car or its attachments coming into contact with over- head structure or other obstruction, (ii) for counterweight,— the distance between any part of the counterweight assembly and the nearest part of the overhead structure or any other obstruction when the lift car floor is levelled with the lowest lift landing.