Nikola Tesla U.S. Patent 1,061,206 - Turbine Patent Wrapper Page 46

910 10 16, end held in position thereon by a threaded nut 11, a shoulder 12, and intermediate washere 17. The diets have openings 14 adjacent to the shaft and spokes 15, which may be substantielly straight. For the sake of clearness, but a few disks, with comparatively wide intervening spaces, are illustrated. The runner is mounted in a casing comprising two end castings 19, which contain the bearings for the shaft 16, indicated but not shown in detail; stuffing boxes 21 and outlets 20. The end castings are united by a central ring 22, which ie bored out to a circle of a elightly larger diameter then that of the disks, and hes flanged extensions 23, and inlets 24, into which finished porte or nozzles 25 are inserted. Circular grooves 26 and labyrinth packing 27 are provided on the sides of the runner. Supply pipes 28, with valves 29, are connected to the flenged extensions of the central ring, one of the valves being normally closed. For a more ready and complete understanding of the principle of operation it is of advantage to consider first the actions that take place when the device is used for the propulsion of fluids for which purpose let it be assumed that power is applied to the shaft and the runner set in rotation say in a clockwise direction. Neglecting, for the moment, those features of construction that make for or against the efficiency of the device as a pump, as distinguished from a motor, a fluid, by reason of its properties of adherence and viscosity, upon entering through the inlets 20, and coming in contact with the disks 13, is taken hold of by the latter and subjected to two forces, one acting tangentially in the direc-29089 کرسی T