Nikola Tesla U.S. Patent 1,061,142 - Fluid Propulsion Patent Wrapper Page 57

J J T T T J J J 6¹ €2 .... Div. 9, Room 142, In the matter of the application of Nikola Tesla, Serial No. 523,832, filed October 21st, 1909. Subject: Fluid Propulsion, IN THE UNITED STATES PATENT OFFICE Hon. Commissioner of Patents, Sir:- follows:- Paper ke U.S.PATENT LEFICE In the matter of the above named application we hereby amend, in view of office letter of December 19th, 1912, as New York, December 30th, 1912. On page 7 of the specification, after line 8, insert: I do not claim in this application the method herein described of imparting energy to a fluid, having made that discovery the subject of a copending application Serial No. 735,914. -1Cancel claim 1 (formerly claim 5) and substitute the refor the following: 1. A machine for propelling or imparting energy to fluids comprising in combination a plurality of spaced disks rotably mounted and having plane surfaces, an enclosing casing, ports of inlet at the central portion of said casing and through which the fluid is adapted to be introduced to the axial portions of the disks, and ports of outlet at the peripheral portion of the casing through which the fluid, when the machine is driven by power, is adapted to be expelled, as set forth. We make this amendment in order to more clearly define 857