From Kook Science
Edmund Miles was an inventor at Harrisburg, Pennsylvania who claimed in October 1919 to have devised a method of perpetual motion that utilised liquid air, relying on what he referred to as the "magnetic power of oxygen," his discovery constituting a "new law in chemistry." The claims seem to have received little attention outside of the local papers, and even that minor interest seems to have quickly faded.
- "Produces Engine Which Runs Without Power - PERPETUAL MOTION SOLVED AT LAST - Power Can Be Furnished For Every Cause Without Cost, Declares Inventor, Who Has Made Working Model", Harrisburg Telegraph (Harrisburg, PA): 1, 17, 9 Oct. 1919, https://www.newspapers.com/newspage/40667579
- "Secret of 'Perpetual Motion' Up For Sale - Harrisburg Inventor Hunting Man With Million Before Disclosing Device", Pittsburgh Post-Gazette (Pittsburgh, PA): 7, 10 Oct. 1919, https://www.newspapers.com/newspage/85670107
- "NEW PRINCIPLE IS FOUND FOR MAKING WHEELS TURNS - Newport Inventor Discovers That Machine Runs Forever With Brakes on, and Stops With Brakes Released", Harrisburg Telegraph (Harrisburg, PA): 1, 11 Oct. 1919, https://www.newspapers.com/newspage/171861171
- "Lack of Million Dollars Will Not Keep Wonderful Machine Off Market", Harrisburg Telegraph (Harrisburg, PA): 9, 15 Oct. 1919, https://www.newspapers.com/newspage/40668585