Nikola Tesla U.S. Patent 1,061,206 - Turbine Patent Wrapper Page 21

V mounted on a shaft and open at or near the same, an inclosing casing with a peripheral inlet or inlets, in the plane of the disks, and an outlet or outlets in its central portion, as described. 3.8.17 9085 A rotary engine adapted to be propelled by adhesive and viscous action of a continuously expanding fluid comprising in combination a casing forming a chamber, an inlet or inlets tangential to the periphery of the same, and an outlet or outlets in its central portion, with a rotor composed of spaced disks mounted on a shaft, and open at or near the same, as described. 4.9.18. A machine adapted to be propelled by fluid, consisting in the combination of a plurality of disks mounted on a shaft and open at or near the same, and an enclosing casing with ports or passages of inlet and outlet at the peripheral and central portions, respectively, the disks being spaced to form passages through which the luid may flow, under the combined influence of radial and tangential forces, in a natural spiral path from the periphery towards the axis of the disks, and impart its energy of movement to the same by its adhesive and viscous action thereon, as set forth. 5.10.19. A machine adapted to be propelled by a fluid comprising in combination a plurality of spaced disks rotably mounted and having plane surfaces, an enclosing casing and ports or. passages of inlet and outlet adjacent to the periphery and center of the disks, respectively, as set forth. 620 A machine adapted to be propelled by a fluid comprising in combination a runner composed of a plurality of -17885