Nikola Tesla U.S. Patent 514,169 - Reciprocating Engine Patent Wrapper Page 5

50 1 Cancelld an 13,93 ? B as noperature. shum & described, Sir:- Hon. Cormis si oner of Patents, follows: Room 243 In the Hatter of the App li cat ion of Nikola Tesla, No. 483,563, Filed Aug. 19, 1893, Reciprocating Engines. insert - New York, October 28th, 1893. In the above application we now amend as Two Cancel the last three lines of Claim 3 and "adapted to control the reciprocation of the pist on so as to maintain isochronous vibrations, as set forth". We request that the draftsman insert the letter R in the drawings to indicate the pawl connected with the piston rod of the engine, and the letter R' to indicate the pivotal point of said pawl. On page 9, in the 5th line from the bottom of the page, after the word "mechanism" insert the pawl R is pivoted at R' and its bifurcated end engages with the teeth of the ratchet wheel alternately on opposite sides of the same, one end of the pawl at each half oscillat ion acting to propel the wheel forward through the space of one tooth when it is engaged and locked by the other end on the last half of the oscillation which brings the first end into position to engage with another tooth. ) It is objected that the term "spring" is not pro