Mr. Miller having expended a large fortune on these experiments, found it, no doubt, inconvenient to continue them, or having other projects in view, gave orders to dismantle the vessel in which his last experiment had been made, and laid her up with her engines at Bence Haven, at that time his property. More than ten years elapsed before Mr. Symington found another patron, indeed, it was not till 1801, that Thomas first Lord Dundas, employed him to fit up a steam-boat for the Forth and Clyde Canal Company, in which he was a large shareholder. Having availed himself of the many improvements made by Watt and others, Symington patented his new engine on the 14th of March of that year,[60] and fitting it on board the Charlotte Dundas, named after his lordship’s daughter, produced, in the opinion of most writers who have carefully and impartially inquired into this interesting subject, “the first practical steam-boat.”[61] Mr. Woodcroft has furnished a sectional drawing of this vessel of which the following is a copy on a reduced scale;[62] it resembled in many respects the description of vessel suggested by Jonathan Hulls, but not till now practically applied.
In March 1802, the Charlotte Dundas made her trial trip on the Forth and Clyde Canal. Embarking at Lock 20 a party of gentlemen, including Lord Dundas, and taking in tow two vessels or barges of 70 tons burden, she accomplished the trip to Port Dundas, Glasgow, a distance of 19½ miles, in six hours, or at the rate of 3¼ miles per hour, although it blew so strong a gale right ahead during the whole day that no other vessel on the canal attempted to move to windward.[63] Lord Dundas entertaining a very favourable opinion of the experiment, recommended the adoption of Symington’s steam-boat in a letter of introduction to the Duke of Bridgewater, who gave him an order to construct eight vessels similar to the Charlotte Dundas to ply on his canal.
Elated by his success, Symington returned to Scotland to make arrangements for carrying out the orders of his Grace with the hope of realizing the advantages his ingenuity and perseverance so well merited; but he was disappointed in his hopes, the Duke of Bridgewater died before the details of the agreement had been definitely arranged, and the Committee who had charge of the affairs of the canal after his death, came to the conclusion that it would not be advisable to use steamboats on it for fear of injury to its banks. We may presume that the Forth and Clyde Canal Company arrived at somewhat similar conclusions, for the Charlotte Dundas does not appear to have been again used.
Here it may be desirable to add that the Charlotte Dundas had an engine with the steam acting on each side of the piston (Watt’s patented invention) working a connecting rod and crank (Pickard’s patented invention)[64] together with the union of the crank to the axis of Miller’s improved paddle-wheel, thus combining for the first time the essential characteristics of the existing marine engines: nevertheless, she was laid up in a creek of the canal near to Bramford Drawbridge, where she remained for many years exposed to public view, as a curiosity—doubtless, also, as a warning to speculators![65]
Symington’s limited means were now nearly exhausted, and the little that remained was expended in defending himself from attacks made on him by the relations of Mr. Taylor for having patented, as they alleged, the inventions of that gentleman. But the contentions of rival parties, inter se, rarely deserve commemoration except for the elucidation of the truth. It is, however, to be regretted that each of those persons who respectively contributed to the maturity of this invention, did not reap more material advantages from it in return for the time and labour they bestowed in perfecting a machine which has done so much for the benefit of mankind.
In 1797, an experiment in canal steam navigation, copied no doubt from Symington’s original boat, was made in the neighbourhood of Liverpool, which is alluded to as follows in the Monthly Magazine for July of that year:—“Lately, at Newton Common in Lancashire, a vessel, heavy laden with copper slag, passed along the Sankey Canal without the aid of haulers or rowers, the oars performing eighteen strokes a minute by the application of steam only! After a course of 10 miles the vessel returned the same evening by the same means to St. Helens whence she had set out.”
While these experiments were being made with success in Great Britain, and especially in Scotland, there were not wanting claimants—some of them of somewhat earlier date—to this great invention in other and distant parts of the world. To that of Gauthier we have already referred. In 1776, a countryman of his, Guyon de la Plombiere, suggested the use of a steam-engine for propelling a vessel;[66] and, in that year, the Marquis de Jouffroy states he used, besides the one already mentioned, a steam boat (40 feet long and 16 feet wide) on the Doubs, with propellers moved by a chain from a single cylinder and counterpoise, which opened and closed like louvre boards;[67] applying, in 1780, an engine to his boat with a duck-foot propeller, two cylinders, inclined at an angle, and turned by a chain round a barrel.[68]
In 1782, Dixblancs sent to the Conservatoires des Arts et Metiers a model of a steamboat moved by a chain of floats carried on wheels at its sides turned by a horizontal cylinder;[69] and in 1796, it is stated that one Seraffino Serrati, an Italian, had some time previously placed a steam-boat on the Arno, near Florence.[70]
Rumsey and Fitch.