Nikola Tesla U.S. Patent 514,169 - Reciprocating Engine Patent Wrapper Page 21

66 with the piston, a jacket forming a chamber around the around air con since air spring through which the steam or compressed gas is it would be impossible 1. develop a teen in wat no pout. forming ce chanter Zinctemal Cochrane Et al v Deiner Et al CO 1877-242 passed on its way to the cylinder, as and for the purpose. in regard 4 in te would be practiveaily is in sonce the action of the paston depends only on the presses Fun Faral set forth. 5. The method of producing isochronous movement herein described, which consists in reciprocating a pist on by steam or gas under pressure and controlling the rate or period of reciprocation by the vibration of a spring, as set fort h. 6. The method of operat ing a reciprocat ing engine which consists in reciprocating a pist an, maintaining by the movements of the piston, the vibration of an air spring and applying the heat gerated by the compression of the spring to the steam or gas driving the piston. Nr. Rola Tesla Welners: Parker W. Page. R.F. Eay lord Orig Spec 3,000 Parts of original margin notes not legible - Ed.] -11