Charles F. Ritchel's Flying-Machine was demonstrated in public during May and June of 1878. The gas bag was of rubberized fabric and the framework was constructed of brass tubing. The hand-cranked "Ritchel Flying-Machine" was first flown in public by Mabel Harrington, although Mark Quinlan appears to have made most of the public demonstration flights, including two which lasted over an hour each. The innovative "Ritchel Flying-Machine" was flown in Connecticut, Pennsylvania and Massachusetts, and made the first outdoor, public, powered flight in the U.S., as well as the first outdoor, public, powered circular flight in the U.S. Charles F. Ritchel built and sold five of his "Flying-Machines."
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