Figure 1 is a view of a machine by which I purpose to derive a disposable force or power from the action, weight or pressure of the atmosphere, through the medium of the column of water or other heavy liquid descending on one side of the enclosed vertical wheel, and from thence through the centrifugal wheel, being returned into the same reservoir from which the pressure of the atmosphere raises it to be again delivered on the top of the vertical wheel to supply the discharge on the descending side, arising from the centrifugal force communicated to it by the rotary velocity of the centrifugal wheel, and the pressure of the descending column overbalancing the reaction or resistance of the atmosphere at the discharging apertures of the centrifugal wheel. Thus a small quantity of water or other liquid (according to the size of the machine required) being continually returned onto the top of the vertical wheel by the pressure or action of the atmosphere, and acting by its unbalanced gravity or impetus in its descent, will produce a disposable force or power of any required magnitude, by increasing the size or number of the machines, provided the height the fluid is required to be raised is not quite so high as the column which the atmosphere, when lightest, will raise of that fluid, and allowing for the requisite velocity on the vertical wheel. In Fig. 1, A is the feeding pipe through which the fluid is raised by the pressure or action of the atmosphere on the fluid in the lowest reservoir in which the lower end of the pipe is immersed, closed by a cock, sliding plate, valve or shutter, to allow the machine to be filled at the commencement, and which may be under the surface of the fluid, also to keep it air-tight. The other end is inserted air-tight into the top reservoir, or by a curve, as shown by the dotted line _a_, joined to pipe C, and delivering upon the vertical wheel, without any top reservoir. In this case, if water is used, the highest part of the bend or curve inside should not exceed thirty feet above the level of the water in lowest reservoir. B is the top reservoir, the lowest internal part of which should never exceed twenty-nine or thirty feet above the water in lowest reservoir, but it will admit the top of the reservoir, if wished, to be rather higher than when the curved tube _a_ only is used. It must be quite air-tight, and supported as convenient. C is a pipe, joined air-tight to top reservoir, or forming part of A, _a_, C. C is a movable flap of strong leather, or other substance, which may be joined to the lowest part of C, where the water is delivered so high on the wheel and where floats with hinges are used on the wheel to prevent its going down on the ascending side; but not necessary when water is delivered lower on the wheel. D, D, D, D, is the fixed and immovable waterway, and the fixed case or cover (of