A device has been provided for moving and maneuvering a cart or a skid carrying thereon a load which is desired to be moved. This device comprises a means for propelling manually the device independently of the cart or, when engaged to the cart, propelling it under power, means for engaging and disengaging the cart, and means for holding the cart in an engaged position for maneuvering of the cart and moving it in a desired direction. Further, the device comprises a plate having affixed thereto four wheels and an idle or secondary wheel which idle wheel may be used to disengage two of the wheels from the surface, i.e. floor, over which the cart and the device is being moved. The means for engaging and disengaging the cart are activated merely by appropriate lowering and raising of a handle through a single arc, whereby a number of cooperating cams, cam slides, latches, springs, etc. provide for easy, maintenance-free operation of the device.