Keely
Keely pursued the line of "invention" instead of "discovery" from 1872, and his thoughts were thus concentrated until 1882. Engine after engine was scrapped as old metal, in his failures to construct one that would keep up the rotary motion of the ether that was necessary to hold it in any structure. Explosion after explosion occurred, sometimes harmless, at other times laying him up for weeks. He spent two more years endeavoring to devise an automatic control to enable the machine for liberating the energy to be handled by an operator and in 1884 he stated he was commencing to make real progress. [Snell Manuscript - The Book, page 2]