Nikola Tesla U.S. Patent 1,061,206 - Turbine Patent Wrapper Page 37

JUJUJUE LUDULLULLYLUJ] The 100 HP turbine at the Edison plant, as shown in photographss E and F hereto annexed was used to drive an alternating current genertor through reducing gears, and was equipped with all devices for measuring steam consumption, the pressures af the different points in the path of the steam, and the electrical work done by the generator was accurately indicated by a wattmeter. In many of these instances I have recorded myself the pressures and temperatures of the steam, the speed of the turbine and the electrical performance of the generator, and I have found the turbine to be more ecconomical in steam consumption than any other as given by the guarantee of steam conThe tests have shown sumption of well known manufacturers. that thermo dynamic work is being performed by the steam on its free spiral path through the torotor, a unique feature of these turbines constructed by Mr. Tesla. red No. The 100 HP Tesla turbine at the Edison plant, above referto, is shown in the accompanying photograph E of drawing 147, and photograph F. The rotor, as shown in the longitudinal section of the said drawing is composed of plane disks The sectional riveted together with intertices between them. view in drawing No.147 shows the central openings of the disks which the steam leaves the rotor after having traversed it its free spiral path. As seen in section at C D the steam entering tangentially from above leaves the rotor at both ends, passing into the exhaust chamber. by in The following table gives the results of tests made by lir. Tesla and my self to show the performance of this turbine: -536 901