lifting jack

1 definition found

lifting jack - Collaborative International Dictionary of English v.0.48 :

  Lifting \Lift"ing\, a.
     Used in, or for, or by, lifting.
     [1913 Webster]
  
     Lifting bridge, a lift bridge.
  
     Lifting jack. See 2d Jack, 5.
  
     Lifting machine. See Health lift, under Health.
  
     Lifting pump. (Mach.)
     (a) A kind of pump having a bucket, or valved piston, instead
         of a solid piston, for drawing water and lifting it to a
         high level.
     (b) A pump which lifts the water only to the top of the pump,
         or delivers it through a spout; a lift pump.
  
     Lifting rod, a vertical rod lifted by a rock shaft, and
        imparting motion to a puppet valve; -- used in the engines
        of river steamboats.
  
     Lifting sail (Naut.), one which tends to lift a vessel's
        bow out of water, as jibs and square foresails.
        [1913 Webster]