Abstract: An invalid lift and transfer device has two rigid cantilever frames, a first of which is caster supported for rolling along the ground and a second of which is supported on the first frame for vertical movement, which movement is actuated by a jack engaged therebetween. A patient sling is suspended between opposite sides of the second frame. The frames, in aggregate, define between them a space which at a rear end is open laterally and vertically sufficiently to accept a wheelchair, bed, toilet or other patient support and which at the forward end is open up to a height sufficient to permit the leg and foot supports of the wheelchair, with the patient's legs and feet thereon, to project therethrough forwardly of the frames.