Nikola Tesla U.S. Patent 511,916 - Electric Generator Patent Wrapper Page 35

42 tating system of inertia. "I produce such current by imparting to the bobbins a reciprocating movement etc." and further, "To produce this reciprocating movement of the currents (evidently meaning bobbins), I employ a steam cylinder A, the piston rod of which carries directly et c." A steam cylinder and pist on alone would not accomplish the result, and it is obvious that these forme d only parts of an engine of which the steam chest shown formed also a part. But the presence of a steam chest in connection with the devices shown implies almost certainly the other appurtenances of an ordinary engine including governor and fly wheel. Moreover, had he had in mind any other fom of engine than the one previously referred to as that for producing a rotary movement of the bobbins, he would most certainly have called a tt en tion to this fact. We do not think, therefore that in attributing to the Jablochkoff engine the properties of an ordinary steam engine such as is employed to convert reciprocating in rotary motion we assumed too much. But there are other equally strong reasons for rejecting the Jablochkoff patent as an anticipation of the Applicant's combination is one of great va lue and importance. We do not understand at least, that any question has been raised as to this claim, and to defeat the claims on a prior publication it is necessary invention. -4