452 FEDEEAIi BEPOBTEB. �cylinders and pistons and the attendant machinery in patent No. 132,111, and not one embodying any invention claimed in patent No. 132,111. �• The specification of patent Noj 172,896 says: "In the drawings, A representa the outer casing or çylinder, provided with the inlets, a a'. On each side of the casing, A, is secured a suitable frame-work ,to sustain the puUeys, 1 1 and 2 2. From this frame-work rise the vertical guides, B B, for the cross-head, G. Within the çylinder. A, works the hollow pis- ton, D, the upper portion of which is connected by suitable means to the cross-head, C. Again, within the hollow piston, �D, is a stationary hollow çylinder, E, secured to the bottom of çylinder A. Thus the piston, D, moves and operates between the interior of the çylinder A and the exterior of the çylinder �E, for purposes hereinafter explained. Again, within the çylin- der E is fixed to operate the piston, F, having a hollow pis- ton rod, /, reaching nearly to the top of the ej'linder E. Again, within the hollow piston-rod or çylinder,/, is singly fitted and operated the piston, G. This hollow rod or cylin- inder, /, is provided with a valve, g, at its bottom for a pur- pose hereinafter explained. Attached to the piston, G, is the piston-rod, I, the opposite or upper end of which is connected with the cross-head, C, by any suitable means. Through the base of the casing or çylinder, A, I arrange the inlet openings, a a', for the passage of the water from the Connecting pipes. The opening, a, entera, the çylinder. A, immediately under the piston, D, and supplies the water for raising that pis- ton. The opening, a', enters the çylinder, A', immediately under the piston, F, and supplies the water for raising that piston, The pipes conducting the water to the openings, a and a', may be supplied with discharge cocks of any of the well-known styles. �"The operation of my device is as foUows: The elevator being ready to ascend, water is admitted through the open- ing, a, and the pressure raises the piston, D, and with it the piston-rod, I, both being connected with the cross-head, C; the resuit will be the equal aseent of the pistons, D and G. ����
