John Fitch (inventor)
The first successful trial run of his steamboat "Perseverance" was made on the Delaware River on August 22, 1787, in the presence of delegates from the Constitutional Convention. It was propelled by a bank of oars on either side of the boat. During the next few years, Fitch and Voigt worked to develop better designs, and in June 1790 launched a boat powered by a steam engine driving several stern-mounted oars. These oars paddled in a manner similar to the motion of a swimming duck's feet. With this boat, he carried up to 30 paying passengers on numerous round-trip voyages between Philadelphia and Burlington, New Jersey during the summer of 1790. Estimates of miles traveled that summer range from 1,300 to 3,000, and Fitch claimed that the boat often went for 500 miles without mechanical problems. Estimated speeds were of a minimum 6 miles per hour under unfavorable conditions, to a maximum of 7 or 8 miles per hour.
Fitch was granted a U.S. patent on August 26, 1791, after a battle with James Rumsey, who had also invented a steam-powered boat. The newly created federal Patent Commission did not award the broad monopoly patent that Fitch had asked for, but rather a patent of the modern kind, for the new design of Fitch's steamboat. It also awarded steam-engine-related patents dated that same day to Rumsey, Nathan Read, and John Stevens. The loss of a monopoly due to these same-day patent awards led many of Fitch's investors to leave his company. While his boats were mechanically successful, Fitch no longer had the financial resources to carry on.
Steamboat
A steamboat was described and patented by English physician John Allen in 1729. In 1736, Jonathan Hulls was granted a patent in England for a Newcomen engine-powered steamboat (using a pulley instead of a beam, and a pawl and ratchet to obtain rotary motion), but it was the improvement in steam engines by James Watt that made the concept feasible. William Henry of Lancaster, Pennsylvania, having learned of Watt's engine on a visit to England, made his own engine. In 1763 he put it in a boat. The boat sank, and while Henry made an improved model, he did not appear to have much success, though he may have inspired others.
The first steam-powered ship "Pyroscaphe" was a paddle steamer powered by a Newcomen steam engine; it was built in France in 1783 by Marquis Claude de Jouffroy and his colleagues as an improvement of an earlier attempt, the 1776 "Palmipède". At its first demonstration on 15 July 1783, "Pyroscaphe" travelled upstream on the river Saône for some fifteen minutes before the engine failed. Presumably this was easily repaired as the boat is said to have made several such journeys. Following this, De Jouffroy attempted to get the government interested in his work, but for political reasons was instructed that he would have to build another version on the Seine in Paris. De Jouffroy did not have the funds for this, and, following the events of the French revolution, work on the project was discontinued after he left the country.