Nikola Tesla U.S. Patent 1,061,206 - Turbine Patent Wrapper Page 12

876 0,4 Erased per @ 9076 in the propelled machine a great torque is always desirable, this calling for an increased number of disks and smaller distance or separation, while in the propelling machine, for numerous economic reasons, the rotary effort should be the smallest and the speed the greatest practicable. Hany other considerations, which will naturally suggest themselves, may affect the design and construction, but the preceding is thought to contain all necessary information in this regard. Referring now to Figs. 3 and 4 illustrative of the manner in which the invention is, or may be, applied to the thermodynamic conversion of energy where it finds its greatest practical value, the runner, as in the previous figures, is composed of disks 13 with openings 14 and spokes 15 which latter, in this case, may be straight. The disks are keyed to and held in position on a shaft 16, mounted to turn freely in suitable bearings, not shown, and are separated by washers 17 conforming in shape with the spokes and firmly united thereto by bolts 18. For the sake of clearness but a few disks, with comparatively wide intervening spaces, are indicated. The runner is mounted in a casing comprising two end castings 19 with outlets 20 and stuffing boxes 21, and a central ring 22 which is bored out to a circle of a diameter slightly larger than that of the disks, and has flanged extensions 23 and inlets 24 into which finished ports or nozzles 25 are inserted. Circular grooves 26 and labyrinth packing 27 are provided on the sides of the runner. Supply pipes 28, with