Nikola Tesla U.S. Patent 1,061,142 - Fluid Propulsion Patent Wrapper Page 9

) T 1 T T ( forces opposing molecular separation. As an inevitable consequence a certain amount of the fluid is dragged along by the moving body. Conversely, if the body be placed in a fluid 1 in motion, for the same reasons, it is impelled in the direction of movement. These effects, in themselves, are of daily observation, effects, but I believe that I am the first to apply them in a practical and economical manner to fluid propulsion. The nature of my discovery and the principles of construction of the apparatus which I have designed for carrying it out, I shall now proceed to describe by reference to the accompanying drawings which illustrate an operative and efficient embodiment of the same. Fig. 1 is a partial end view, and Fig. 2 a vertical cross section of a pump or compressor, while Figs. 3 and 4 represent, respectively, in corresponding views, a rotary engine or turbine, both machines being constructed and adapted to be operated in accordance with my invention. Figs. 1 and 2 show a runner composed of a plurality of flat rigid disks 1 of suitable diameter, keyed to a shaft 2 and held in position by a threaded nut 3, a shoulder 4 and washers 5 of the requisite thickness. Each disk has a number of central openings 6, the solid portions between which form spokes 7 preferably curved, as shown, for the purpose of reducing the loss of energy due to the impact of the fluid. This runner is mounted in a two-part volute casing 8 having stuffing boxes 9 and inlets 10 leading to its central portion. In addition a gradually widening and rounding outlet 11 is provided formed with a flange for connection to a pipe as usual. The casing 8 rests upon a base 12 shown only in part -3This page retyped from microfilm for better readability - Ed. 809